EP1407089A2 - Plancher accessible a structure integree - Google Patents

Plancher accessible a structure integree

Info

Publication number
EP1407089A2
EP1407089A2 EP02746638A EP02746638A EP1407089A2 EP 1407089 A2 EP1407089 A2 EP 1407089A2 EP 02746638 A EP02746638 A EP 02746638A EP 02746638 A EP02746638 A EP 02746638A EP 1407089 A2 EP1407089 A2 EP 1407089A2
Authority
EP
European Patent Office
Prior art keywords
panels
floor
building members
grid
members
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02746638A
Other languages
German (de)
English (en)
Other versions
EP1407089B1 (fr
EP1407089A4 (fr
Inventor
Roger Roen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1407089A2 publication Critical patent/EP1407089A2/fr
Publication of EP1407089A4 publication Critical patent/EP1407089A4/fr
Application granted granted Critical
Publication of EP1407089B1 publication Critical patent/EP1407089B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/48—Special adaptations of floors for incorporating ducts, e.g. for heating or ventilating
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/10—Load-carrying floor structures formed substantially of prefabricated units with metal beams or girders, e.g. with steel lattice girders

Definitions

  • the present invention relates to floor structures, and more specifically to a floor assembly having removable access panels supported on a grid that is supported on a plurality of primary and secondary structural supports.
  • Power and data outlets have been located in, or under, a floor, typically in removable floor sections elevated above the original floor by supports. Two typical types of elevated floors are the pedestal floor and the low-profile floor.
  • the pedestal access floor has pedestals that consist of metal rods with a base plate at one end and a supporting plate on the other that supports removable horizontal panels, thus forming a raised floor structure.
  • the metal rods are height adjustable and rest on a conventional solid floor deck.
  • the solid floor deck may be made of wood, concrete, or a combination of metal deck and a concrete topping slab.
  • the rods are arranged in a grid, typically square.
  • the rods and plates support removable floor sections.
  • the height of the rods is typically about 18 inches and can be adjusted to a desired height prior to installing the floor sections.
  • Electrical power and data cables are laid between the solid floor deck and the underside of the floor sections. The cables penetrate the floor sections at a desired location to suit the user's needs.
  • the penetrations may consist only of cables, or may be a junction box, similar to a common electrical wall outlet.
  • the penetrations may accommodate power wires, or signal cables such as cable television, speaker wire, computer networks, etc.
  • the space between the floor deck and the elevated floor sections is enough to enable the distribution of conditioned air through grilles and/or registers located in selected floor sections. Because it is relatively expensive, this system is generally used where accommodation must be made for changes in elevation of the floor.
  • the pedestals must be braced to meet seismic code, further increasing labor and cost.
  • the pedestals increase ceiling height requirements, and ultimately the height of the building, which increases the area of the exterior envelope, thereby increasing not only construction costs but also operating costs due to heat loss.
  • the pedestal access floor is only used in parts of a building, ramps or structural accommodations must be made for the changes in floor elevation. As users re-route electrical cables below the access floor, the pedestals may present an impediment in pulling cables to a new location.
  • the access floor also represents another step in the construction schedule. The acoustical properties of this system are poor.
  • the floor sections are usually relatively thin and rigid and transmit sound both horizontally and vertically.
  • the second type of elevated floor is a low-profile design, which may be roughly 2'/_ inches to 4 inches high.
  • This design does not use pedestals to raise and support the floor sections, but rather relies on "feet" at the corners of the sections to create the space above the solid floor deck and below the underside of the panel.
  • the panels, with low "feet,” rest directly on the floor deck.
  • This low-profile design is less costly than the pedestal floor, but still impacts the cost of a traditionally designed floor in a building because it requires the use of a solid floor deck.
  • the problem of elevation changes between the existing conventional floor and accessible floor also remains.
  • the space below the low-profile sections is not deep enough to be used to supply air.
  • the resulting floor is not as stable, in either the horizontal or vertical dimension, as the pedestal access floor described above. Since the sections are not fastened to the floor deck, they can move when cable is being pulled and re-routed. It also increases the floor-to-floor height of the building, and thus the construction and operating costs. In general, the smaller distance between the solid floor deck and the surface of the floor sections decreases the flexibility of the low-profile floor. Both types require an underlying solid floor deck for support and to provide structural stability to the exterior building.
  • a floor assembly for a building having a plurality of primary structural building members, a plurality of spaced-apart secondary structural building members spanning the primary building members, a support grid on the top surfaces of the secondary building members, and a plurality of panels mounted on the support grid to form the floor, with each of the panels individually removable from the support grid to provide access to the space beneath.
  • a floor assembly includes a plurality of longitudinal structural supports, a grid assembly, an attachment system attaching the grid assembly to the upper surface of each of the longitudinal structural supports and configured to enable adjustment in the position of the grid assembly relative to the longitudinal structural supports, and a plurality of panels, the bottom portion of the panels configured to be received into openings in the grid, and the top portion configured to bear against a top surface of the grid assembly.
  • a building in accordance with another embodiment of the invention, includes a plurality of primary structural building members, a plurality of spaced-apart secondary structural building members spanning the primary building members, a support grid affixed to the top surfaces of the secondary building members and configured to receive panels, an attachment system attaching the support grid to the top surface of each of the secondary structural building members and configured to enable adjustment in the position of the support grid relative to the secondary structural building members, and a plurality of panels received in the support grid to form a floor, each of the panels individually detachable from the support grid to provide access to the space between the secondary structural building members.
  • Figure 1 shows an isometric view of a section of the floor system formed in accordance with one embodiment of the present invention
  • Figure 2 shows a detail of a structural support grid element of a floor system formed in accordance with another embodiment of the present invention
  • Figure 3 is a cross-sectional view taken along line III-III of a portion of the floor system of Figure 1 ;
  • Figure 4 is a cross-sectional illustration of an alternative embodiment of the floor system of Figure 3 taken along line IV-IV;
  • Figure 5 is a plan view of a floor system according to another embodiment of the invention.
  • Figure 6 is a plan view of a floor system according to an alternative embodiment of the invention.
  • Figure 7 is an isometric view of a further embodiment of a floor system of the present invention.
  • Figure 8 is an isometric view of a floor system illustrating an alternative embodiment of the present invention.
  • the structurally integrated accessible floor system hereinafter referred to as the floor system, is designated generally as 100, and is shown isometrically in Figure 1.
  • Primary framing members 102 are provided, which can be formed as integral parts of metal frame type buildings. Secondary framing members, such as joists 104 are connected to the primary framing members 102. According to one embodiment of the invention, a structural support grid 106 is then formed over the secondary framing members 104. The grid 106 is configured to receive removable floor panels 108 in the openings 110 formed by the grid 106. The removable floor panels 108 are of a uniform size to allow interchangeability, and they may be provided with terminals or hookups 112 for electrical power and communication access, and with vents or registers 114 for ventilation. For the sake of convenience and clarity, one type of power terminal 112 is shown in Figure 1.
  • terminals including standard 110 volt sockets, coaxial cable terminals, fiber optical connections, heavy duty power terminals, T2 connectors, etc.
  • a user may further choose to provide an opening in the panel to enable the passage of cable without the use of a terminal.
  • vent 114 a wide variety of means to transmit air and gas may be used in place of the vent 114, including compressed air hookups, vacuum lines, fans, directionally adjustable vents, filters, emergency gas evacuation systems, compressed oxygen, CO 2 , propane, nitrogen, etc.
  • Figure 1 also shows optional panels 116 attached to metal channels 118, which are in turn affixed to the underside of the secondary framing members. These panels 116 are ideally constructed of material that resists fire, thus forming a fire block. The panels 116 isolate one story of a building from the next, establishing fire protection, which may required by many building codes.
  • the panels 116 attached to the underside of the secondary framing members enclose the space between the secondary framing members. This enclosed space may be employed as a plenum for HVAC. This can result in a financial savings, because ductwork is reduced or eliminated. Partitions may be used within this space to permit discreet sections of the floor system to pressurize for use as a plenum.
  • the structural support grid comprises L-shaped rail members 202 affixed in back-to-back relationship to T-shaped joint nodes 200 to form supports for the removable floor panels.
  • the nodes and rail members are standardized to permit interchangeability.
  • the rail members may have many different cross- sectional shapes and node configurations. For example, some alternative cross-sectional shapes include channel, "T", and square.
  • FIG 3 shows the floor system 100 in cross-section taken along lines III-III in Figure 1.
  • the removable floor panel 108 has a plurality of layers, including a top layer 300, which is configured according to the requirements of the particular application and may have a carpeted surface or a tile surface. Alternatively, the top layer may be formed using chemically resistive materials for use in a lab or other caustic environments.
  • the top layer 300 and a bottom layer 306 are designed to provide structural stiffness to the panel 108 and are configured according to the structural and weight bearing requirements of the particular application.
  • Fire retardant layers 304 are composed of fire resistant materials such as gypsum, or other appropriate material, and serve to inhibit the passage of fire from one side of the panel 108 to the other.
  • An insulation layer 302 provides thermal and acoustic insulation, as well as additional stiffness. It will be understood that the composition of the removable floor panels will vary according to the requirements of a particular application and will in part be dictated by the anticipated environment, the required load carrying capacity, the desired appearance, the anticipated degree of noise control, local building and fire codes, and other factors.
  • panel fasteners 310 may be used to positively attach the panels 108 to the structural support grid 106.
  • the panel fasteners 310 comprise threaded fasteners that pass from a lower surface of the structural support grid 106 into an opening in a lower surface of the removable panel 108 via an opening 311 in the rail member 202 of the structural support grid 106.
  • the opening 311 is oversized in relation to the threaded fastener 310 to enable adjustment in the position of the removable panel 108 relative to the structural support grid 106.
  • the threads of the threaded fastener 310 engage the removable panel and a hexagonal head of the fastener 310 bears against the lower surface 324 of the support grid 106, drawing the removable panel tight against the structural support grid 106.
  • access to the panel fasteners 310 is from beneath the structural support grid 106.
  • a leveling unit 308 is provided to control a vertical distance 320 between the structural support grid 106 and the secondary framing members 104.
  • Figure 3 shows 5 one of a plurality of similar units that comprise the leveling system, which functions as described below.
  • the leveling unit 308 includes a threaded rod 312 attached to a support plate 314 that bears against an upper surface 322 of the secondary framing member 104.
  • the threaded rod 312 passes through a lift plate 316 via an opening 10 in the lift plate 316, with the lift plate 316 bearing upward against the lower surface 324 of the structural support grid 106.
  • the rod 312 is slideably received in an opening 307 formed in the grid 106.
  • a pair of jam nuts 318 on the threaded rod supports the lift plate 316. The position of the jam nuts 318 on the threaded rod determines the distance 320 between the upper surface 322 of the secondary framing member 104 and the lower surface 15 324 of the structural support grid 106.
  • the bearing surface 326 of the floor system 100 can be leveled, even if the upper surfaces 322 of the secondary framing members are not level.
  • leveling devices that are 0 functionally similar to the leveling unit 308 described above may be employed between an upper surface 120 (shown in figure 1) of the primary framing members 102 and the part
  • the level of the structural support grid 106 can be controlled. 5 Other methods of controlling the vertical distance (not shown) between the primary and secondary framing members 102, 104, or between the structural support grid
  • Figure 4 is a cross-sectional view of a floor system 100, taken along line IV- IV, and shows an alternative embodiment of the removable panel 108.
  • a flexible gasket 400 is affixed to the top edge 412 of each panel 108, 109.
  • the gaskets 400 of adjoining panels 108, 109 press against each other, providing a seal between the removable panels 108, 109.
  • the seal may be employed to prevent spills from leaking through the floor system.
  • the composition of the gasket 400 is chosen to be resistant to the particular classes of substances in use. Multiple or interlocking gaskets may also be employed to provide a more secure seal.
  • FIG. 4 also shows an alternative embodiment of the panel fasteners.
  • the panel fastener 410 is accessed with a tool (not shown) that is inserted from above the surface of the floor system into the center of the joint node 200.
  • the panel fastener 410 is rotated approximately 45°.
  • Fastener blades 408 rotate from positions in slots (not shown) in the joint node 200 into slots in the corners of the removable panels 406, locking them in place.
  • Such devices include those employing cam-type fasteners, devices that are accessible from the surface of the removable floor panels, devices that latch automatically when the removable floor panels are emplaced, etc.
  • some buildings include devices or methods of construction that provide earthquake resistance.
  • a solid floor deck functions as a diaphragm, which is resistant to dimensional stresses.
  • the structural support grid 106 is attached orthogonally, relative to the primary 102 and secondary 104 framing members.
  • Diagonal stays 500 are employed to brace and provide the requisite stability to the structure.
  • the stays 500 are attached directly to the primary columns 502 of a building and pass underneath the floor structure 100.
  • Figure 6 shows an alternative embodiment of the invention, in which the structural support grid 106 is oriented diagonally, relative to the primary 102 and secondary 104 framing members.
  • the structural support grid 106 itself forms the diagonal bracing that reinforces the building structure.
  • repositionable walls 700 may be employed as part of the structurally integrated accessible floor system. These repositionable walls may consist of floor to ceiling room dividers, which may be assembled on site, as shown in Figure 7, or prefabricated and installed as individual units, or alternatively they may be prefabricated cubicle dividers of the type common in office environments. The repositionable walls 700 are affixed directly to the structural support grid 104.
  • Partial floor panels 108a may be cut to the necessary size at the site, using conventional methods, or may be manufactured in common dimensions. By affixing the walls 700 to the grid 106 and employing partial floor panels, acoustical isolation is enhanced and the structural stability of the walls 700 is improved. Electrical components in the walls 700, such as light switches, thermostats, power connections etc, may be wired directly through the bottom of the walls via harnesses (not shown) that can be connected to cables and connectors underneath the floor panels 108. This is a significant advantage, especially in the case of cubicle dividers, over the methods currently in use, because conventional cubicle dividers must bring power into open areas and may involve complex interconnections between the dividers, and power drops from ceilings.
  • FIG 8 illustrates an alternative embodiment of the invention in which structural support rails 800 are employed.
  • the rails 800 span the secondary framing members 104 and support the removable floor panels 108 on two sides.
  • the floor panels 108 of this embodiment are configured to span the structural support rails 800.
  • an elevated floor system of the type described in the background section of this document is installed on top of an existing floor.
  • the elevated floor occupies a space above the floor, and is not part of the building structure.
  • the accessible space provided by such an elevated floor is that space between the panels that form the surface of the elevated floor and the upper surface of the solid floor deck.
  • the solid floor deck is not needed.
  • the removable panels provide access to the space beneath the grid and between the individual secondary framing members. In prior floor structures, this space is inaccessible and wasted. Because the structural support grid of the present invention spans the secondary framing members, the space beneath is unobstructed, providing simplified access for pulling cables, laying conduit, ducting, and pipe.
  • the cost of the floor system disclosed herein is significantly mitigated by several factors.
  • a conventional structural floor is not required, and the floor system is essentially the same height as a conventional structural floor, obviating the need for ramps in areas where conventional floors adjoin the floor system.
  • the floor system does not add height per story to the final building structure, there will be a savings in building materials, and a savings in operating costs over those of a similar building using accessible floors according to the prior art.
  • the floor system has improved flexibility and changeability. Pulling cable, laying conduit and pipe, and installing ducting are all simplified. The labor costs and down time costs are reduced during changeovers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Floor Finish (AREA)

Abstract

L'invention concerne un plancher pour bâtiment, qui comprend des supports de structure primaire et secondaire, une grille fixée aux supports, et plusieurs panneaux montés amovibles dans la grille pour fournir un accès à l'espace situé au-dessous des panneaux et de la grille. Le plancher de l'invention remplace les planchers porteurs permanents classiques, et donne facilement accès à l'espace sous-jacent qui, autrement, aurait été inaccessible avec un plancher classique.
EP02746638.2A 2001-06-21 2002-06-21 Plancher accessible a structure integree Expired - Lifetime EP1407089B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US887772 2001-06-21
US09/887,772 US20020194806A1 (en) 2001-06-21 2001-06-21 Structurally integrated accessible floor system
PCT/US2002/019867 WO2003000013A2 (fr) 2001-06-21 2002-06-21 Plancher accessible a structure integree

Publications (3)

Publication Number Publication Date
EP1407089A2 true EP1407089A2 (fr) 2004-04-14
EP1407089A4 EP1407089A4 (fr) 2004-07-28
EP1407089B1 EP1407089B1 (fr) 2013-09-18

Family

ID=25391824

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02746638.2A Expired - Lifetime EP1407089B1 (fr) 2001-06-21 2002-06-21 Plancher accessible a structure integree

Country Status (7)

Country Link
US (1) US20020194806A1 (fr)
EP (1) EP1407089B1 (fr)
JP (1) JP4327591B2 (fr)
AU (1) AU2002316345A1 (fr)
CA (1) CA2451532C (fr)
HK (1) HK1065084A1 (fr)
WO (1) WO2003000013A2 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7546715B2 (en) 2001-06-21 2009-06-16 Roen Roger C Structurally integrated accessible floor system
US8850770B2 (en) 2001-06-21 2014-10-07 Roger C. Roen Structurally integrated accessible floor system
CA2464062C (fr) * 2004-04-13 2012-01-17 Maxcess Technologies Inc. Systeme de faux plancher modulaire avec joint etanche a l'air
GB0501407D0 (en) * 2005-01-22 2005-03-02 Crout Brian R Decking structure incorporating slabs and suppport plates
CN101012700A (zh) * 2007-02-01 2007-08-08 傅晓乐 一种红外线电热架空发热地板块及其组合地板
FR2937947B1 (fr) * 2008-11-05 2010-12-31 Stx France Cruise Sa Navire a passagers a coursives exterieures pourvues de moyens de ventilation.
US9273464B2 (en) * 2009-09-01 2016-03-01 Roger C. Roen Structurally integrated accessible floor system
US20110167747A1 (en) * 2010-01-12 2011-07-14 Chien-Teh Huang Ceiling with stabilizing frame
CN105369955B (zh) * 2015-11-06 2019-01-15 中建钢构有限公司 一种集成装配式楼板
US11725413B2 (en) * 2020-07-17 2023-08-15 Granite Industries, Inc. Elevated flooring system for clearspan tent

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3396501A (en) * 1966-02-21 1968-08-13 Tate Architectural Products Elevated floor system of grounded metal panels
US3583121A (en) * 1969-06-17 1971-06-08 Tate Architectural Products Rigid reticulated bar joist system
US4922670A (en) * 1989-01-27 1990-05-08 Naka Technical Laboratory Free access floor and method of constructing the same
US5477649A (en) * 1993-04-30 1995-12-26 Airtite Contractors Inc. Raised floor cable trough system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
No further relevant documents disclosed *
See also references of WO03000013A2 *

Also Published As

Publication number Publication date
EP1407089B1 (fr) 2013-09-18
US20020194806A1 (en) 2002-12-26
CA2451532C (fr) 2011-08-09
WO2003000013A3 (fr) 2003-09-12
EP1407089A4 (fr) 2004-07-28
CA2451532A1 (fr) 2003-01-03
JP4327591B2 (ja) 2009-09-09
HK1065084A1 (en) 2005-02-08
JP2004522025A (ja) 2004-07-22
WO2003000013A2 (fr) 2003-01-03
AU2002316345A1 (en) 2003-01-08

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