JP2010033361A - Method for calculating evacuation start time of person staying in building, method for evaluating evacuation safety performance of the building upon fire breaking, and calculation program and calculation system for executing these calculating method or evaluating method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To evaluate the evacuation safety performance of a building when the fire breaks out on the basis of an evacuation start time by simply and exactly calculating the evacuation start time of an evacuating person staying in an annexed room having an entrance only to a reference room where the fire breaks out when the fire breaks out in the reference room having the entrance in an evacuation space. <P>SOLUTION: The method for calculating a time when the evacuating person staying in the annexed room having the entrance only to the reference room where the fire breaks out when the fire breaks out in the reference room having the entrance to the evacuation space for evacuating from the room in the building calculates an evacuation start time on the basis of a time required by the time a notifying person staying in the reference room perceives the fire in the reference room and a time which the notifying person needs to reach the annexed room from the reference room when the inside of the reference room is provided with a path through which persons come into and go out of the annexed room. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for calculating the time until a occupant in a building starts evacuation when a fire occurs in the building, and the evacuation of the building when a fire occurs in the building. The present invention relates to a method for evaluating safety performance. Moreover, it is related with the calculation program and calculation system which perform these calculation methods or evaluation methods.

  In general, when designing a building, the designer examines the evacuation safety performance of the building, i.e., examines whether the occupants in the building can safely evacuate from the building. This examination is made by comparing the evacuation completion time, which is the time required for evacuation, with the evacuation limit time until the evacuation is impossible after a fire occurs in the building room. Here, the evacuation completion time is obtained from the sum of the evacuation start time, the walking time, and the door passage time. In addition, the evacuation limit time is the time when smoke generated by a fire falls to a height that hinders safe evacuation, floor area, entrainment factor, ceiling height of the reference room, fire growth rate, smoke layer density Based on the above. Then, it is determined that the room is safe only when the evacuation completion time is shorter than the evacuation limit time. Otherwise, the redesign of the room is repeated until the above condition is satisfied.

Currently, for example, Patent Literature 1 and Non-Patent Literature 1 are presented as methods for calculating the evacuation completion time.
JP 2007-334683 A 2000 Ministry of Construction Notification No. 1441

  By the way, there are buildings in which the room is subdivided by partition walls. For example, a room (hereinafter referred to as “accessory room”) may be provided behind a room (hereinafter referred to as “reference room”) having an entrance and exit in a corridor (hereinafter referred to as “evacuation space”) that can be evacuated outdoors. In this case, since the attached room does not have a direct entrance to and from the evacuation space, the evacuation must be evacuated to the evacuation space through the reference room.

In both Patent Document 1 and Non-Patent Document 1, the evacuation start time t _start [s] is set for each of the reference rooms, including the case where an occupant in an attached room that cannot evacuate without passing through the reference room where the fire occurred is evacuated. The calculation is made by Equation 1 using the floor area A _f [m ² ] and the total floor area A _a [m ² ] of all the attached rooms having the entrance and exit from the reference room.

However, a person in the attached room as described above may not be able to understand the state of the reference room depending on the arrangement of the partition walls. In such a case, it is considered that it may take more time for the fire to be detected than the person in the reference room. That is, was calculated evacuation start time t _start [s] by equation 1, the evacuation start time of the occupants of the accessory compartment t _start [s] is underestimated (actually than can be evacuated quickly also evaluated) There is a risk.

Further, when the evacuation start time t _start [s] is underestimated, there is a risk that the evacuation completion time calculated based on the evacuation start time t _start [s] is also underestimated. If so, there is a risk that the evacuation safety performance of the building will be overestimated (evaluated as safer than actual).

  The present invention has been made in view of such conventional problems, and when a fire occurs in a reference room having an entrance / exit in an evacuation space, only the reference room where the fire has occurred resides in an attached room having an entrance / exit. A method for calculating the evacuation start time of an evacuee simply and accurately, a method for evaluating the evacuation safety performance of the building at the time of a fire based on the evacuation start time, and a calculation method or an evaluation method thereof are executed. The purpose is to provide a calculation program and a calculation system.

According to the first aspect of the present invention, when a fire occurs in a reference room having an entrance in an evacuation space for evacuating from a room in a building, the auxiliary room has an entrance only in the reference room where the fire has occurred. A method for calculating the time for evacuees in a room to start evacuation,
When the reference room is provided with a passage portion used for traffic of people entering and leaving the attached room,
Evacuation starts based on the time required for the contact person in the reference room to notice the fire in the reference room and the time required for the contact person to reach the attached room from the reference room An evacuation start time calculation method characterized by calculating time.
According to the first aspect of the present invention, the evacuation start time can be easily and accurately calculated in consideration of the status of the refugees in the attached room and the partition in the building space.

Invention of Claim 2 is the evacuation start time calculation method of Claim 1, Comprising:
The time t _notice [s] required for the contact person in the reference room to _notice the fire in the reference room is the difference between the floor area A _f [m ² ] of the reference room and the reference room. The evacuation start time calculation method is characterized by calculating the following equation using the total floor area A _a [m ² ] of all attached rooms having entrances and exits.

According to the invention described in claim 2, in this calculation method, the evacuation start time can be calculated immediately by substituting specific specific numerical values for the input parameters A _f and A _a. it can. Therefore, the evacuation start time t _start [s] can be easily obtained even if the person is not a professional.

Invention of Claim 3 is the evacuation start time calculation method of Claim 1,
The time t _notice [s] required for the contact person in the reference room to _notice the fire in the reference room is the difference between the floor area A _f [m ² ] of the reference room and the reference room. Total floor area A _a [m ² ] of all the attached rooms having entrances and exits, C _m [kg / kJ ^1/3 · m ^5/3 · s ^2/3 ], and ceiling height H of the reference room _f [m], fire growth rate α [kW / s ² ], smoke layer density ρ _s [kg / m ³ ], and smoke layer thickness Z _s [m] that can detect fire, An evacuation start time calculation method characterized by calculating by an equation.

According to the invention described in claim 3, as long as appropriate specific numerical values are substituted for the input parameters A _f , A _a , H _f , α, ρ _s , C _m , and Z _s , Evacuation start time can be calculated immediately. Therefore, the evacuation start time t _start [s] can be easily obtained even if the person is not a professional.

Invention of Claim 4 is the evacuation start time calculation method in any one of Claims 1-3, Comprising:
The time t _inform [s] required for the contact person to reach the attached room from the reference room is the walking distance l _inform [m] from which the contact person in the reference room reaches the attached room, The evacuation start time calculation method is characterized in that the following equation is calculated by using the walking speed v _inform [m / s] of the contact person.

According to the invention described in claim 4, in the attached room such as the walking distance l _inform [m] until the contact person in the reference room reaches the attached room and the walking speed v _inform [m / s] of the contact person. Since it has the input parameter which concerns on the condition of the refugee who is in the room, the evacuation start time can be calculated easily and accurately in consideration of the partition in the building space.

Invention of Claim 5 is the evacuation start time calculation method of Claim 4, Comprising:
The walking distance l _inform [m] is a evacuation start time calculating method, characterized in that it is a distance from a boundary between a portion of the reference room that is not a passage part and the passage part to the entrance / exit of the auxiliary room.
According to the fifth aspect of the present invention, it is possible to easily and accurately calculate the evacuation start time when a person who is closest to the attached room among the persons who are present in the reference room is in contact.

In the invention according to claim 6, when a fire occurs in a reference room having an entrance in an evacuation space for evacuating from a room in a building, the auxiliary room has an entrance only in the reference room where the fire has occurred. A method for calculating the time for evacuees in a room to start evacuation,
A fire detector for detecting a fire in the reference room when the reference room has a passage portion used for traffic of people entering and exiting the attached room, and broadcasting in the attached room And a fire detection broadcast system comprising a receiver that causes the broadcaster to broadcast about the possibility of a fire when the fire detector senses the occurrence of a fire,
The time t _detect [s] required from the occurrence of a fire until the fire detector is activated, and the refugee reaches from each part of the attached room to the boundary between the non-passage part of the reference room and the passage part. The evacuation start time t _start [s] is calculated by the following formula using the walking distance l _check [m] up to and the walking speed v _check [m / s] of the refugee. This is a time calculation method.

According to invention of Claim 6, about the case where the said building has a fire detection broadcast system, evacuation start time can be calculated easily. Therefore, it is possible to obtain the evacuation start time t _start [s] simply and accurately even if it is not a professional job. In addition, the equation 17 is present in the attached room such as the walking distance l _check [m] until the evacuee in the attached room reaches the main part of the reference room and the walking speed v _check [m / s] of the evacuee. Since it has input parameters related to the status of the evacuees to be evacuated, the evacuation start time can be accurately calculated in consideration of the partition in the building space.

The invention according to claim 7 is the evacuation start time calculation method according to claim 6,
In the reference room, the fire detection broadcasting system is located at a position farther from the fire source than the first fire detector and the first fire detector, and the first fire detector and a warning range. Have different second fire detectors,
And the time _t detect1 [s] required until the the fire first fire detector is activated, further using the time _t alarm2 _[s] required until the the fire second fire detector is activated Thus, the evacuation start time calculation method is characterized in that the evacuation start time t _start [s] is calculated by the following equation.

According to the seventh aspect of the present invention, the evacuation start time can be easily and accurately calculated when the reference room has a fire detection broadcasting system including a plurality of fire detectors. Therefore, the evacuation start time t _start [s] can be easily obtained even if the person is not a professional. Also, in the same formula, the evacuee in the attached room is in the attached room such as the walking distance l _check [m] to the main part of the reference room and the evacuee walking speed v _check [m / s]. Since it has input parameters related to the status of the evacuees to be evacuated, the evacuation start time can be accurately calculated in consideration of the partition in the building space.

The invention according to claim 8 is an auxiliary room having an entrance / exit only in the reference room where the fire has occurred when a fire occurs in a reference room having an entrance / exit in an evacuation space for evacuating from a room in a building. A method for evaluating the evacuation safety performance of a refugee in a room using the evacuation start time calculation method according to any one of claims 1 to 7,
Obtaining a walking time t _travel [s] required for the evacuee to move from the position at the start of evacuation to the reference room entrance;
Obtaining a door passage time t _queue [s] required for the evacuees to pass through the door of the reference room entrance;
Calculating an evacuation completion time t _escape based on the calculated evacuation start time t _start [s], the acquired walking time t _travel, and the acquired door passage time t _queue [s];
Obtaining the evacuation limit time t _limit [s] required for the smoke layer in the reference room to reach a state that hinders evacuation from the occurrence of a fire;
If the calculated evacuation completion time t _escape [s] is greater than the acquired evacuation limit time t _limit [s], it is determined that the building is not safe, and the calculated evacuation completion time t _escape [s]. Determining that the building is safe if is less than or equal to the acquired evacuation limit time t _limit [s];
It is the building evacuation safety performance evaluation method characterized by including.

According to the eighth aspect of the present invention, depending on whether or not an evacuee in an attached room having an entrance to only the reference room where the fire occurred can safely evacuate to the evacuation space. Evacuation safety performance can be evaluated. That is, the evacuation completion time t _escape [s] required for the evacuees to complete the evacuation from the fire to the evacuation space, and the evacuation limit time t from the occurrence of the fire until the smoke layer in the reference room has an obstacle to evacuation Safety performance can be evaluated by comparing the magnitude relationship with _limit [s].

According to the ninth aspect of the present invention, when a fire occurs in a reference room having an entrance in an evacuation space for evacuating from a room in a building, the auxiliary room has an entrance only in the reference room where the fire has occurred. A method for evaluating the evacuation safety performance of a refugee in a room using the evacuation start time calculation method according to any one of claims 1 to 7,
Obtaining a walking time t _travel [s] required for the evacuee to move from the position at the start of evacuation to the reference room entrance;
Obtaining a door passage time t _queue [s] required for the evacuees to pass through the door of the reference room entrance;
Based on the calculated evacuation start time t _start [s], the acquired walking time t _travel [s], and the acquired door passage time t _queue [s], the evacuation completion time t _escape [s] A step of calculating
Calculating a smoke layer lower end height Z _escape [m] at the time of completion of evacuation in the reference room based on the calculated evacuation completion time t _escape [s];
Obtaining a smoke layer lower limit height H _limit [m] that hinders evacuation from the reference room;
If the calculated smoke layer lower end height Z _escape [m] at the time of evacuation completion is less than the acquired smoke layer lower limit height H _limit [m], the building is determined to be unsafe, A step of determining that the building is safe if the calculated smoke layer lower end height Z _escape [m] at the time of completion of evacuation is equal to or greater than the acquired smoke layer lower limit height H _limit [m]; ,
It is the building evacuation safety performance evaluation method characterized by including.

According to the ninth aspect of the present invention, depending on whether or not an evacuee occupying an attached room having an entrance / exit only in the reference room where the fire occurred can safely evacuate to the evacuation space Evacuation safety performance can be evaluated. That is, the smoke layer lower end height Z _s [m] of the reference room at the time when the refugee completes evacuation to the evacuation space, and the limit smoke layer height H _limit that is the upper limit of the smoke layer lower end height that can be evacuated Safety performance can be evaluated by comparing the magnitude relationship with [m].

The invention described in claim 10 is a program that executes the calculation method according to any one of claims 1 to 7 or the evaluation method according to claim 8 or 9.
According to the invention described in claim 10, the calculation method and the evaluation method can be executed by a data processing device such as a computer. In addition, the program can be distributed using an electric communication line such as the Internet, so that the applicant can easily use the calculation method and the evaluation method.

In the invention described in claim 11, when a fire occurs in a reference room having an entrance in an evacuation space for evacuating from a room in a building, the auxiliary room has an entrance only in the reference room where the fire has occurred. A calculation system for calculating the time when an evacuee in a room starts evacuation,
It has a numerical operation processing unit that performs numerical calculations,
The numerical operation processing unit
When the reference room has a passage portion used for traffic of people entering and exiting the attached room,
An evacuation start time calculation system that calculates an evacuation start time based on the calculation method according to claim 1.
According to the eleventh aspect of the present invention, it is possible to easily and accurately calculate the evacuation start time in consideration of the status of evacuees in the attached room and the partition in the building space.

The method for calculating the evacuation start time of a room occupant in the building according to the present invention, the evaluation method for the evacuation safety performance of the building in the event of a fire, the calculation program and the calculation system for executing these calculation methods or evaluation methods, etc. According to the present invention, when a fire occurs in a reference room having an entrance / exit in the evacuation space, an evacuation start time t of an refugee who does not have an entrance / exit in the evacuation space but is in an attached room having an entrance / exit in the reference room. _{The start} [s] can be calculated easily and accurately, and the evacuation safety performance can be accurately evaluated.

=== First Embodiment ===
The method for calculating the evacuation start time at the time of fire in the building according to the first embodiment is, for example, the evacuation safety performance at the time of fire of the building at the design stage of the building, or at the plan change or usage change stage of the existing building. Used when evaluating.

  FIG. 1 is a floor plan of a building to be used for the calculation method of the first embodiment. As shown in FIG. 1, the present embodiment includes a reference room 10 having an entrance in an evacuation space such as a corridor, and an auxiliary room 20 having an entrance in the evacuation space but having no entrance in the evacuation space. Further, the reference room 10 is specialized for a building having a passage portion 14 used for traffic of people entering and leaving the auxiliary room 20. In other words, when a fire occurs in the reference room 10, people in the attached room 20 (hereinafter referred to as "evacuee 30") who cannot escape without passing through the reference room 10 where the fire occurred evacuate from the fire. Is calculated while taking into account the arrangement of the partition walls. In other words, in the first embodiment, when the contact person 40 in the reference room 10 notices the occurrence of a fire, the contact person goes through the passage portion 14 to the attached room 20 to evacuate to the refugee 30, thereby The evacuees 30 consider the case of starting evacuation.

To evaluate evacuation safety, the evacuation start time t _start [s] from when the evacuee starts evacuation until the evacuee starts evacuation and the evacuation completion until the evacuee completes evacuation from the fire to the evacuation space The time t _escape [s] and the evacuation limit time t _limit [s] from the occurrence of a fire to the state where the smoke layer in the reference room has an obstacle to evacuation are required. The evacuation start time t _start [s] necessary for sex evaluation is calculated.

The evacuation start time t _start [s] is specifically expressed as in Equation 2.
A _f : Floor area of the reference room [m ² ]
A _a : Total floor area [m ² ] of all attached rooms having entrances and exits from the reference room
H _f : Standard room ceiling height [m]
α: Fire growth rate [kW / s ² ]
ρ _s : smoke layer density [kg / m ³ ]
C _m : Smoke generation coefficient related to smoke generation [kg / kJ ^1/3 / m ^5/3 / s ^2/3 ]
Z _s : thickness of smoke layer that can detect fire [m]
l _inform : Walking distance [m] from the person in the reference room to the attached room
v _inform : walking speed of contact person [m / s]

Then, if a specific numerical value is substituted for these input parameters A _f , A _a , H _f , α, ρ _s , C _m , Z _s , l _inform , and v _inform , a fire will occur in the reference room The time t _start [s] from the time until the occupant in the attached room starts evacuation can be easily and accurately obtained. The method for deriving Equation 2 will be described later.

Hereinafter, the parameters α, ρ _s , C _m , Z _s , l _inform , and v _inform will be described.

(1) Fire growth rate α
When evaluating evacuation safety performance in a fire space such as a living room, a fire source Q _f (heating rate) [kW] that increases in proportion to the square of time t [s] as shown in the following equation 3 is assumed. Is common.
Here, the proportionality constant α [kW / s ² ] in the above equation 3 is the fire growth rate α. This fire growth rate α is calculated from, for example, the result of an assumed combustion test of combustible materials, or calculated by the following equation 4 based on the Evacuation Safety Verification Act (Ministry of Construction Notification No. 1441 in 2000) The
Α _f is a fire growth rate [kW / s ² ] due to combustion of the combustible material stored in the fire space, and is set according to the combustible material such as furniture in the fire space. On the other hand, α _m is a fire growth rate [kW / s ² ] due to combustion of the interior material of the fire space, and is set in consideration of the non-combustibility of the finishing material constituting the wall and ceiling of the fire space. The relationship between these fire space conditions and the specific values of the fire growth rate α _f , α _m is described in contrast to the Ministry of Construction Notification No. 1441 in 2000 and is set with reference to this. can do.

(2) Smoke generation coefficient C _m
The smoke generation coefficient C _m is a coefficient when the surrounding air is entrained and expanded when a hot air stream containing combustion gas or soot generated from a fire rises. As the value, for example, 0.08 or 0.076, as shown as a constant in “Yoshiyoshi Tanaka, Revised Edition, Introduction to Building Fire Safety Engineering, Nippon Building Center, 2002, p22-23”. [Kg / kJ ^1/3 / m ^5/3 / s ^2/3 ] is used. If it is desired to increase the safety, a numerical value larger than the above numerical value may be used.

(3) Smoke density ρ _s
If the density ρ _{s of the} smoke layer is set to 1.0 [kg / m ³ ], for example, a calculation result on the safe side can be obtained. Therefore, it may be calculated as 1.0 [kg / m ³ ].

(4) Smoke layer thickness Z _s that can detect fire
The thickness of the smoke layer (height from the ceiling in the reference room to the bottom of the smoke layer) that enables a person in the reference room to recognize the occurrence of a fire when a fire occurs in the reference room. It can be calculated as a thickness corresponding to 10% of the ceiling height.

(5) Walking distance from the person in the reference room to the attached room l _inform
In order for a person in the reference room (hereinafter referred to as “Contact 40”) to notify the person in the attached room connected to the reference room of the occurrence of a fire in the reference room The distance to walk. If the person in the reference room who is closest to the attached room is to contact, the part of the reference room 10 that is not the passage part 14 (hereinafter referred to as “reference room main part 18”). And the distance from the boundary between the passage part (hereinafter referred to as “passage part boundary 16”) and the entrance / exit 22 of the attached room.

  Further, if it is not determined that the person who is in the reference room 10 contacts the attached room 20, the distance from the center of the reference room main part 18 to the attached room entrance 22 is set. . If it is assumed that the safest side is assumed, the distance from the end of the reference chamber main portion 18 farthest from the auxiliary room entrance 22 to the auxiliary room entrance 22 is set.

(6) Contact person's walking speed v _inform
The speed when the contact person walks to the entrance / exit of the attached room is generally 1.0 to 1.3 [m / s]. In order to obtain the calculation result on the safe side, 1.0 [m / s] You can calculate.

Based on the above parameters, the time t _notice [s] required from the occurrence of fire until the contact notices the fire t _notice [s], that is, the time t _smoke [in which the smoke layer thickness of the reference room becomes the thickness necessary for fire _notice ] s] is calculated by, for example, the following simple formula 5 for calculating the lower end height of the smoke layer described in “Yoshiyoshi Tanaka, Revised version, Introduction to Architectural Fire Safety Engineering, Nippon Building Center, 2002, p232-234”. The

On the other hand, according to the Evacuation Safety Verification Act stipulated in the Ministry of Construction Notification No. 1441 in 2000, the time t _notice [s] required from the occurrence of a fire until the contact person notices the fire is calculated by the following formula 6. Is done.

Here, a larger value is adopted among the time t _notice [s] required from the occurrence of the fire calculated by the formulas 5 and 6 until the contact person notices the fire. In other words, in order to obtain a result on the safe side when it is considered that a time longer than the time calculated by the verification method according to Equation 5 is required while satisfying the minimum, which is the verification method defined by law. The value of Equation 5, which is a large value, is adopted. That is, the time t _notice [s] required from the occurrence of a fire until the contact person notices the fire is obtained by the following equation (7).

Furthermore, in order to inform the evacuees in the attached room that a fire has occurred, the contact person walks to the attached room. The time t _inform [s] required for this transmission is obtained by the following equation 8.

If the communication time t _inform [s] obtained in Equation 8 is added to the time t _notice [s] required for the contact person to _{notice the} fire from the occurrence of the fire obtained in Equation 7, the above equation 2 is obtained. The evacuation start time t _start [s] of the evacuated refugee is obtained.

If the input parameters H _f , α, ρ _s , C _m , and Z _s cannot be obtained, the following equation 9 may be used. The evacuation start time t _start [s] can be obtained more simply.

  As mentioned above, although the calculation method of the evacuation start time concerning 1st Embodiment has been demonstrated, here, the effect of this calculation method is demonstrated.

First, in this calculation method, the specific numerical values corresponding to the input parameters A _f , A _a , H _f , α, ρ _s , C _m , Z _s , l _inform , and v _{inform in} the above-described Equation 2 are used. As long as is substituted, the evacuation start time can be calculated immediately. Therefore, the evacuation start time t _start [s] can be easily obtained even if the person is not a professional. In addition, Formula 2 is for evacuation in the attached room such as the walking distance l _inform [m] until the contact person in the reference room reaches the attached room and the walking speed v _inform [m / s] of the contact person. Therefore, the evacuation start time can be calculated easily and accurately in consideration of the partition in the building space.

By the way, the calculation method of the evacuation start time t _start [s] according to the above-described formula 2 can be easily executed using a general data processing apparatus (corresponding to a calculation system) represented by a personal computer. For example, the data processing device includes a central processing unit (CPU: equivalent to a numerical operation processing unit), a data recording device such as a hard disk device, an output device such as a monitor, an input device such as a keyboard, and a CD-ROM drive device. It is possible to use a personal computer having a normal configuration equipped with a data reading device.

The data recording apparatus stores in advance a calculation program for calculating the above-described equation 2, and the CPU reads and executes the calculation program. That is, the specific numerical values input by the input device are substituted into input parameters A _f , A _a , H _f , α, ρ _s , C _m , Z _s , l _inform , and v _inform in Equation 2. The evacuation start time t _start [s] is calculated, and the evacuation start time t _start [s], which is the calculation result, is displayed on the monitor.

  Here, general-purpose spreadsheet software such as “Microsoft Excel” (trademark) of US Microsoft Corporation can be used as the arithmetic program. For example, when the “Microsoft Excel” is started, a worksheet composed of a large number of cells arranged vertically and horizontally is displayed on the monitor, and the designer can change the formula 2 into a predetermined cell (reference source cell). input. At this time, the input parameters constituting the expression 2 are associated with a reference destination cell for inputting a specific numerical value of the input parameter so that the input parameter can be calculated in the predetermined cell (reference source cell). . Therefore, if a specific numerical value is input to the reference cell, Equation 2 is automatically calculated based on this specific numerical value, and the smoke layer lower end height Z as the calculation result is written in each reference source cell. The monitor is displayed.

  Such a calculation program may be recorded in advance in a data recording device, or a calculation program recorded in a data recording medium such as a CD-ROM may be read by the data reading device. good. Furthermore, the personal computer may be connected to a telecommunication line such as the Internet and downloaded from a server computer connected to this line.

=== Evacuation Safety Performance Evaluation Method 1 Using the Calculation Method of the First Embodiment 1 ===
FIG. 2 is a flowchart of an evaluation method for evacuation safety performance when a building fire occurs using the calculation method of the first embodiment. This evaluation is performed at the design stage of a building, a plan change or a use change of an existing building.

In this evaluation method, the evacuation safety performance is evaluated based on whether or not an evacuee who resides in an attached room having an entrance / exit only in the reference room where the fire has occurred can safely evacuate to the evacuation space. That is, the evacuation completion time t _escape [s] required for the evacuees to complete the evacuation from the fire to the evacuation space, and the evacuation limit time t from the occurrence of the fire until the smoke layer in the reference room has an obstacle to evacuation Safety performance can be evaluated by comparing the magnitude relationship with _limit [s].

  Hereinafter, a specific procedure of this evacuation safety performance evaluation method will be described with reference to FIG.

First, in step S202, calculation conditions are acquired from a design drawing or the like of a building. That is, the floor area A _f [m ² ] of the reference room (fire space), the total floor area A _a [m ² ] of all the attached rooms having the entrance to the reference room, and the entrainment coefficient C _m [kg / kJ ^1/3 · m ^5/3 · s ^2/3 ], the ceiling height H _f [m] of the reference room, the fire growth rate α [kW / s ² ], and the smoke layer density ρ _s [kg / m ³ ] and the smoke layer thickness Z _s [m] at which a fire can be detected. As for the entrainment factor C _m , 0.08 or 0.076 [kg / kJ ^1/3 / m ^5/3 / s ^2/3 ] may be registered in Equation 2 as a predetermined constant in advance. good.

In step S204, the evacuation start time t _start [s] is calculated using the calculation method of the first embodiment.

In step S206, the evacuation completion time t _escape [s] is calculated. The evacuation completion time t _escape [s] is the time [s] required for the evacuee to complete evacuation to the evacuation space from the occurrence of the fire. The evacuation person is evacuated at the evacuation start time t _start [s] calculated in step S204. By adding the walking time t _travel [s] required for the person to move from the position at the start of evacuation to the reference room entrance and the time t _queue [s] required for the refugee to pass through the door of the reference room entrance Calculated.

Here, since the evacuees are notified of the occurrence of the fire by the contact person, the location where the evacuees were at the start of the evacuation is the attached room. Therefore, the walking time t _travel [s] is calculated using the distance l _travel [m] from each part of the attached room where the refugee was present to the reference room entrance and the walking speed v _travel [m / s] of the refugee. It is obtained using Equation 10.

In addition, since people who want to evacuate from the reference room are concentrated on the door of the reference room entrance and exit, it takes time to pass through the door. The door passage time t _queue [s] is calculated in consideration of the floor area and the entrance / exit width of the reference room, etc. [Non-Patent Document 1] Method defined in the Ministry of Construction Notification No. 1441 in 2000 However, it may be calculated using the following equation 11.
A: Total floor area [m ² ] in the reference room and all attached rooms connected to it.
A _{co (eff)} : Effective staying area [m ² ] of evacuation space (shared corridor)
a _n: necessary residence area ^{[m 2} / person]
B _eff : Effective entrance / exit width [m]
B _neck : Width of exit to stairs or room [m]
p: Density of people in each part of the rental room [person / m ² ]

Then, these input parameters _{A, A co (eff),} a n, B eff, B neck, the p, if only assigning the concrete numerical values applicable, required for evacuees to pass through the door of the reference chamber The time t _queue [s] can be easily obtained.

The evacuation completion time t _escape [s] is calculated by substituting the walking time t _travel [s] and the door passage time t _queue [s] obtained by the above expressions 10 and 11 into the following expression 12.
t _escape = t _start + t _travel + t _queue (12)

In step S208, the evacuation limit time t _limit [s] from the occurrence of a fire until the smoke layer in the reference room reaches a state where there is an obstacle to evacuation is acquired. The evacuation limit time t _limit [s] is, for example, a simple prediction formula for the lower height of the smoke layer described in “Yoshiyoshi Tanaka, Revised Edition, Introduction to Building Fire Safety Engineering, Japan Building Center, 2002, p232-234” (below It can be calculated using equation (13).
A _f : Floor area of the reference room [m ² ]
C _m : Entrainment coefficient [kg / kJ ^1/3 .m ^5/3 .s ^2/3 ]
H _f : height of ceiling of standard room [m]
α: Fire growth rate [kW / s ² ]
ρ _s : smoke layer density (= 1.0) [kg / m ³ ]
Z _s : thickness of smoke layer that can detect fire [m]

In step S210, compares the calculated been evacuated completion time t _escape [s] and evacuation limit time t _limit [s], is less than the evacuation completion time t _escape [s] evacuation time limit t _limit [s] The building is determined to be safe and the evacuation safety evaluation is terminated. On the other hand, if the evacuation completion time t _escape [s] is equal to or longer than the evacuation limit time t _limit [s], it is determined that the building is not safe, the design of the building is reviewed (S212), and the process goes to step S202. Returning, step S202 to step S210 described above are repeated under new calculation conditions based on the revised design.

As described above, according to this evaluation method 1, depending on whether or not an evacuee who resides in an attached room having an entrance to only the reference room where the fire occurred can safely evacuate to the evacuation space. The evacuation safety performance of objects can be evaluated. That is, the evacuation completion time t _escape [s] required for the evacuees to complete the evacuation from the fire to the evacuation space, and the evacuation limit time t from the occurrence of the fire until the smoke layer in the reference room has an obstacle to evacuation Safety performance can be evaluated by comparing the magnitude relationship with _limit [s].

=== Evaluation Method 2 for Evacuation Safety Performance Using the Calculation Method of the First Embodiment 2 ===
FIG. 3 is another flowchart of the evaluation method of the evacuation safety performance when a building fire occurs using the calculation method of the first embodiment. Similar to the above-described evaluation, this evaluation is also performed at the design stage of the building, the plan change or the application change of the existing building. That is, the smoke layer lower end height Z _s [m] of the reference room at the time when the refugee completes evacuation to the evacuation space, and the limit smoke layer height H _limit that is the upper limit of the smoke layer lower end height that can be evacuated Safety performance is evaluated by comparing the magnitude relationship with [m].

  Hereinafter, a specific procedure of this evacuation safety performance evaluation method will be described with reference to FIG.

First, acquisition of the design conditions of the building in step S302, calculation of the evacuation start time t _start [s] in step S304, and calculation of the evacuation completion time t _escape [s] in step S306 are the same as steps S202, S204, and S206 described above. Do the same.

In step S308, the smoke layer lower end height Z _escape [m] at the time of completion of evacuation is calculated. The smoke layer lower end height Z _escape [m] at the time of evacuation completion is, for example, the smoke layer lower end height described in “Takayoshi Tanaka, Revised Edition, Introduction to Building Fire Safety Engineering, Japan Building Center, 2002, p232-234”. It can calculate using the following simple prediction formula (the following formula 14).
A _f : Floor area of the reference room [m ² ]
C _m: entrainment coefficient (= 0.08) [kg / kJ 1/3 .m 5/3 .s 2/3]
H _f : height of ceiling of standard room [m]
α: Fire growth rate [kW / s ² ]
t _escape : Evacuation completion time [s]
ρ _s : smoke layer density (= 1.0) [kg / m ³ ]

In step S310, the limit smoke layer height H _limit [m] for evacuation safety is acquired. Generally, the limit smoke layer height H _limit [m] is 1.8 m.

In step S312, the smoke layer lower end height Z _escape [m] at the time of evacuation completion is compared with the acquired limit smoke layer height H _limit [m], and the smoke layer lower end height Z _escape [ If m] exceeds the limit smoke layer height H _limit [m], it is determined that the building is safe, and the evacuation safety evaluation is terminated. On the other hand, if the smoke layer lower end height Z _escape [m] is equal to or lower than the limit smoke layer height H _limit [m] when the evacuation is completed, it is determined that the building is not safe, and the design of the building is reviewed (S314). After that, the process returns to step S302, and the above-described steps S302 to S312 are repeated under new calculation conditions based on the revised design.

As described above, even in this evaluation method 2, depending on whether or not an evacuee who resides in an attached room having an entrance / exit only in the reference room where the fire occurred can safely evacuate to the evacuation space Evacuation safety performance can be evaluated. That is, the smoke layer lower end height Z _s [m] of the reference room at the time when the refugee completes evacuation to the evacuation space, and the limit smoke layer height H _limit that is the upper limit of the smoke layer lower end height that can be evacuated Safety performance can be evaluated by comparing the magnitude relationship with [m].

  In the evaluation method 1, the evaluation was made based on the elapsed time from the occurrence of the fire, and in the evaluation method 2, the evaluation was made based on the height of the smoke layer in the reference room. In fact, the same evaluation is performed. FIG. 4 is a diagram showing the relationship between the smoke layer height in the reference room and the elapsed time from the occurrence of the fire, with the smoke layer height on the vertical axis and the time on the horizontal axis. As shown in the figure, the difference between the evaluation method 1 and the evaluation method 2 is whether the vertical axis (smoke layer height) is a reference or the horizontal axis (elapsed time) is a reference.

=== Second Embodiment ===
The evacuation start time calculation method at the time of fire in the building according to the second embodiment is the same as in the first embodiment, for example, at the design stage of the building, or at the plan change or usage change stage of the existing building. Used when evaluating evacuation safety performance in case of fire.

  The second embodiment is specialized for a building that includes a reference room 10, an attached room 20, and a passage 14 in the reference room 10, and further includes a fire detection broadcasting system 100. The fire detection broadcasting system 100 includes a fire detector 120 that detects the occurrence of a fire in the reference room 10, a broadcaster 130 that broadcasts in the attached room 20, and a broadcaster that detects the occurrence of a fire. It is a broadcasting system 100 having a receiver 110 that causes 130 to broadcast about the possibility of fire. That is, when a fire occurs in the reference room 10, the time until the refugee 40 starts evacuation from the occurrence of the fire is calculated in consideration of the layout of the partition walls and the broadcast by the fire detection broadcasting system 100 It is.

  FIG. 5 is a diagram showing a procedure for evacuating the refugee 40 in the ancillary room 20 of the building in which the fire detection broadcasting system 100 is provided. As shown in the figure, in a building where the fire detection broadcasting system 100 is installed, when the fire detector 120 detects the occurrence of a fire, the receiver 110 immediately passes through the broadcaster 130, for example, The fire detector has been activated. Please be aware of the next broadcast because it has been confirmed. "The evacuee 40 will be aware of the possibility of a fire. Then, in order to confirm the state of the reference room 10, the evacuee 40 exits the attached room 20 and walks along the passage portion 14, notices the occurrence of a fire at the passage portion boundary 16, and starts evacuation.

Specifically, the evacuation start time t _start [s] is the time t _detect [s] from the occurrence of a fire until the fire detection broadcasting system 100 detects the occurrence of the fire and the caution broadcast is played, and the refugee 40 is a reference. This is considered to be the sum of the time t _check [s] until the occurrence of fire in the room 10 is confirmed.

First, the fire detector operating time t _detect [s] is obtained by the following equation 15, for example.
Q _detect : Fire source heat generation rate [kW] when the fire detector is activated
α: Fire growth rate [kW / s ² ]
Here, the fire source heat generation rate Q _detect [kW] at the time when the fire detection broadcasting system 100 is operated is expressed by the following equation 16 described in “Yoshiyoshi Tanaka, Introduction to Architectural Fire Safety Engineering, Nippon Building Center, 1993, p76”. It can be calculated by
r: Horizontal distance from the fire source to the sensor [m]
ΔT _detect : Ceiling flow temperature rise when the fire detector detects [K]
H _f : Fire room ceiling height [m]

Note that the time t _detect [s] from the occurrence of a fire to the fire warning broadcast means a series of times from when the receiver 110 receives the operation signal of the fire detector 120 until the fire warning broadcast. Therefore, the value is somewhat larger than the time calculated from Equation 16.

Next, the time t _check [s] from when the fire detection broadcast system 100 broadcasts a fire warning broadcast until the attendant in the attached room confirms a fire in the reference room 10 at the passage boundary 16 is the attendant in the attached room. Since it is considered that the walking time required to reach the passage boundary 16 is calculated by the following equation 17 using the walking distance l _check [m] and the walking speed v _check [m / s] as in the equation 8. Can do.
t _check : Walking time [s] required for the person in the attached room to reach the passage boundary
l _check : walking distance from the attached room 20 to the reference room main part 18 [m]
v _check : walking speed (= 1.0 to 1.3) [m / s]
Therefore, the evacuation start time t _start [s] of the evacuees is calculated by the following equation 18.
t _start = t _detect + t _check (Equation 18)

As described above, according to the calculation method of the evacuation start time according to the second embodiment, α, r, ΔT _detect , H _f , l as in the first embodiment when the building has the fire detection broadcasting system 100. _The evacuation start time can be immediately calculated by substituting specific specific numerical values for the _check and v _check input parameters. Therefore, the evacuation start time t _start [s] can be easily obtained even if the person is not a professional. In addition, the equation 17 includes an attachment such as a walking distance l _check [m] until the refugee 40 in the attached room 20 reaches the reference room main part 18 and a walking speed v _check [m / s] of the refugee 40. Since the input parameter relating to the status of the refugee 40 in the room 20 is included, the evacuation start time can be accurately calculated in consideration of the partition in the building space.

By the way, the calculation method of the evacuation start time t _start [s] according to the second embodiment can be easily executed using a general data processing apparatus represented by a personal computer, as in the first embodiment.

=== Evacuation Safety Performance Evaluation Method Using the Calculation Method of the Second Embodiment ===
Even if the evacuation start time t _start [s] calculated according to the second embodiment is used, as in the evaluation method 1 or the evaluation method 2 of the evacuation safety performance using the calculation method of the first embodiment described above, the building Evacuation safety performance can be evaluated.

=== Third Embodiment ===
The evacuation start time calculation method at the time of fire in the building according to the third embodiment is the same as the first embodiment and the second embodiment, for example, the design stage of the building, or the plan change or usage change stage of the existing building In, it is used when evaluating the evacuation safety performance in the event of a fire in a building.

  The third embodiment includes a fire detection broadcasting system 100 that includes a reference chamber 10, an accessory chamber 20, and a passage portion 14 in the reference chamber 10, and further includes a plurality of fire detectors 120 in one reference chamber 10. It is specialized in buildings.

FIG. 6 is a diagram showing a procedure for evacuating a refugee 40 in an attached room 20 of a building in which a fire detection broadcasting system 100 having a plurality of fire detectors 120 is provided in one reference room 10. . In the building where the fire detection broadcasting system 100 is installed, when the first fire detector 120a detects the occurrence of a fire, the receiver 110 immediately passes through the broadcaster 130, for example, Since the warning broadcast (the first report) is broadcast, “Be sure to pay attention to the next broadcast because it has been confirmed.” The evacuees 40 leave the attached room 20 to check the state of the reference room 10. Walk to the passage boundary 16. However, if the second fire detector 120b in the same reference room 10 detects the occurrence of a fire before the evacuees 40 arrive at the passage boundary 16, that is, if two or more fire detectors 120 detect the occurrence of a fire. ) Immediately, for example, “Emergency, fire, fire has occurred on the X floor. Please evacuate calmly.” The evacuation instruction broadcast (second report) will be broadcast, and the evacuees should start evacuation immediately. It becomes. Here, the time required from the occurrence of a fire until the caution broadcast is broadcasted is obtained by the following equation 19 as described in the second embodiment, and the time t _alarm2 [s] required until the evacuation instruction broadcast is broadcasted is the following equation: 20 required.
r ₁ : horizontal distance from the fire source to the first fire detector [m]
r ₂ : horizontal distance from the fire source to the second fire detector [m]
(Where r ₁ <r ₂ )

By the way, when the refugee 40 arrives at the passage boundary 16 and starts evacuation after starting the evacuation before the evacuation instruction broadcast is broadcasted, the process is the same as in the second embodiment. That is, when the refugee 40 confirms a fire in the reference room 10 or when an evacuation instruction broadcast is broadcasted, whichever comes first, the evacuation start time t _start [ s] is calculated by the following equation 21.

The time t _check [s] required for the evacuees 40 to walk to the passage boundary 16 after the caution broadcast is broadcast is as described in the second embodiment.

As described above, according to the calculation method of the evacuation start time according to the third embodiment, the case where the reference room 10 includes the fire detection broadcasting system 100 including the plurality of fire detectors 120 is the same as the first embodiment and the second embodiment. Similarly, the evacuation start time can be immediately calculated by substituting specific specific numerical values for the input parameters α, r, ΔT _detect , H _f , l _check , and v _check . Therefore, the evacuation start time t _start [s] can be easily obtained even if the person is not a professional. In addition, the equation 20 includes attachments such as a walking distance l _check [m] until the refugee 40 in the attached room 20 reaches the reference room main part 18 and a walking speed v _check [m / s] of the refugee 40. Since the input parameter relating to the status of the refugee 40 in the room 20 is included, the evacuation start time can be accurately calculated in consideration of the partition in the building space.

By the way, the calculation method of the evacuation start time t _start [s] according to the third embodiment can be easily executed using a general data processing apparatus represented by a personal computer, as in the first embodiment.

=== Evaluation Method for Evacuation Safety Performance Using the Calculation Method of the Third Embodiment ===
Even if the evacuation start time t _start [s] calculated according to the third embodiment is used, the evacuation safety performance evaluation method 1 or the evaluation method 2 using the calculation method of the first embodiment or the second embodiment described above and Similarly, the evacuation safety performance of a building can be evaluated.

=== Other Embodiments ===
As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment, The deformation | transformation as shown below is possible in the range which does not deviate from the summary.

  In the above-mentioned embodiment, in performing the evaluation method of the evacuation safety performance at the time of the fire of the building, the smoke exhaust effect by the smoke exhaust device is not particularly mentioned. For example, the smoke described in Japanese Patent Application No. 2008-173005 You may consider the effect of the flue gas by a flue gas installation using the calculation method of the lower end height of a layer.

It is a floor plan of the building used as the object using the calculation method of a 1st embodiment. It is a flowchart of the evaluation method 1 of the evacuation safety performance using the calculation method of 1st Embodiment. It is a flowchart of the evaluation method 2 of the evacuation safety performance using the calculation method of 1st Embodiment. It is a figure which shows smoke layer height on a vertical axis | shaft, time is shown on a horizontal axis, and shows the relationship between the smoke layer height in a reference room, and the elapsed time from the occurrence of a fire. It is a figure which shows the procedure for the refugee who lives in the attached room of the building provided with the fire detection broadcast system to evacuate. It is a figure which shows the procedure in which the refugee who occupies the room attached to the building in which the fire detection broadcasting system which has a some fire detector in the one reference room is equipped is evacuated.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Reference room 12 Reference room entrance 14 Passage part 16 Passage part boundary 18 Reference room main part 20 Accessory room 22 Accessory room entrance 30 Evacuee 40 Contact person 100 Fire detection broadcast system 110 Receiver 120 Fire detector 130 Broadcaster

Claims (11)

When a fire occurs in a reference room that has an entrance in an evacuation space for evacuating from a room in a building, the refugee in the attached room that has an entrance only in the reference room where the fire occurred starts evacuation A method of calculating the time to perform,
When the reference room is provided with a passage portion used for traffic of people entering and leaving the attached room,
Evacuation starts based on the time required for the contact person in the reference room to notice the fire in the reference room and the time required for the contact person to reach the attached room from the reference room Evacuation start time calculation method characterized by calculating time. The evacuation start time calculation method according to claim 1,
The time t _notice [s] required for the contact person in the reference room to _notice the fire in the reference room is the difference between the floor area A _f [m ² ] of the reference room and the reference room. The evacuation start time calculation method characterized by calculating the following equation using the total floor area A _a [m ² ] of all the attached rooms having entrances and exits.
The evacuation start time calculation method according to claim 1,
The time t _notice [s] required for the contact person in the reference room to _notice the fire in the reference room is the difference between the floor area A _f [m ² ] of the reference room and the reference room. Total floor area A _a [m ² ] of all the attached rooms having entrances and exits, C _m [kg / kJ ^1/3 · m ^5/3 · s ^2/3 ], and ceiling height H of the reference room _f [m], fire growth rate α [kW / s ² ], smoke layer density ρ _s [kg / m ³ ], and smoke layer thickness Z _s [m] that can detect fire, An evacuation start time calculation method characterized by calculating by a formula.
The evacuation start time calculation method according to any one of claims 1 to 3,
The time t _inform [s] required for the contact person to reach the attached room from the reference room is the walking distance l _inform [m] from which the contact person in the reference room reaches the attached room, An evacuation start time calculation method characterized by calculating the following equation using the contact person's walking speed v _inform [m / s].
The evacuation start time calculation method according to claim 4,
The walking distance l _inform [m] is a distance from a boundary between a portion of the reference room that is not a passage portion and the passage portion to an entrance / exit of the auxiliary room, wherein the evacuation start time is calculated. When a fire occurs in a reference room that has an entrance in an evacuation space for evacuating from a room in a building, the refugee in the attached room that has an entrance only in the reference room where the fire occurred starts evacuation A method of calculating the time to perform,
A fire detector for detecting a fire in the reference room when the reference room has a passage portion used for traffic of people entering and exiting the attached room, and broadcasting in the attached room And a fire detection broadcast system comprising a receiver that causes the broadcaster to broadcast about the possibility of a fire when the fire detector senses the occurrence of a fire,
The time t _detect [s] required from the occurrence of a fire until the fire detector is activated, and the refugee reaches from each part of the attached room to the boundary between the non-passage part of the reference room and the passage part. The evacuation start time t _start [s] is calculated by the following formula using the walking distance l _check [m] up to and the walking speed v _check [m / s] of the refugee. Time calculation method.
The evacuation start time calculation method according to claim 6,
In the reference room, the fire detection broadcasting system is located at a position farther from the fire source than the first fire detector and the first fire detector, and the first fire detector and a warning range. Have different second fire detectors,
And the time _t detect1 [s] required until the the fire first fire detector is activated, further using the time _t alarm2 _[s] required until the the fire second fire detector is activated Then, the evacuation start time t _start [s] is calculated by the following equation.
Evacuation safety performance of evacuees in an attached room having an entrance / exit only in the reference room where the fire occurred when a fire occurs in a reference room having an entrance / exit in an evacuation space for evacuating from a room in a building Is a method of evaluating using the evacuation start time calculation method according to any one of claims 1 to 7,
Obtaining a walking time t _travel [s] required for the evacuee to move from the position at the start of evacuation to the reference room entrance;
Obtaining a door passage time t _queue [s] required for the evacuees to pass through the door of the reference room entrance;
Based on the calculated evacuation start time t _start [s], the acquired walking time t _travel [s], and the acquired door passage time t _queue [s], the evacuation completion time t _escape [s] A step of calculating
Obtaining the evacuation limit time t _limit [s] required for the smoke layer in the reference room to reach a state where there is an obstacle to evacuation from the occurrence of a fire;
If the calculated evacuation completion time t _escape [s] is greater than the acquired evacuation limit time t _limit [s], it is determined that the building is not safe, and the calculated evacuation completion time t _escape [s]. Determining that the building is safe if is less than or equal to the acquired evacuation limit time t _limit [s];
The building evacuation safety performance evaluation method characterized by including. Evacuation safety performance of evacuees in an attached room having an entrance / exit only in the reference room where the fire occurred when a fire occurs in a reference room having an entrance / exit in an evacuation space for evacuating from a room in a building Is a method of evaluating using the evacuation start time calculation method according to any one of claims 1 to 7,
Obtaining a walking time t _travel [s] required for the evacuee to move from the position at the start of evacuation to the reference room entrance;
Obtaining a door passage time t _queue [s] required for the evacuees to pass through the door of the reference room entrance;
Based on the calculated evacuation start time t _start [s], the acquired walking time t _travel [s], and the acquired door passage time t _queue [s], the evacuation completion time t _escape [s] A step of calculating
Calculating a smoke layer lower end height Z _escape [m] at the time of completion of evacuation in the reference room based on the calculated evacuation completion time t _escape [s];
Obtaining a smoke layer lower limit height H _limit [m] that hinders evacuation from the reference room;
If the calculated smoke layer lower end height Z _escape [m] at the time of evacuation completion is less than the acquired smoke layer lower limit height H _limit [m], the building is determined to be unsafe, A step of determining that the building is safe if the calculated smoke layer lower end height Z _escape [m] at the time of completion of evacuation is equal to or greater than the acquired smoke layer lower limit height H _limit [m]; ,
The building evacuation safety performance evaluation method characterized by including.   A program for executing the calculation method according to claim 1 or the evaluation method according to claim 8 or 9. When a fire occurs in a reference room that has an entrance in an evacuation space for evacuating from a room in a building, the refugee in the attached room that has an entrance only in the reference room where the fire occurred starts evacuation A calculation system for calculating time to perform,
It has a numerical operation processing unit that performs numerical calculations,
The numerical operation processing unit
When the reference room has a passage portion used for traffic of people entering and exiting the attached room,
An evacuation start time calculation system characterized in that an evacuation start time is calculated based on the calculation method according to claim 1.