MX2007007838A - Public access stair system. - Google Patents

Abstract

A public access stair assembly for use with a scaffold assembly and methods for assembling or installing such an assembly are disclosed. Advantageously, the stair assembly is connected in-line with the scaffold assembly to create an integrated public access stair system. The system and methods disclosed herein provide numerous benefits including, by way of example and not limitation, quick installation and dismantling.

Description

PUBLIC ACCESS SCALING SYSTEM CROSS REFERENCE TO THE RELATED APPLICATION This request claims priority under 35 U.S.C. §119 (e) of the Provisional Patent Application Serial No. 60 / 890,234, filed on February 16, 2007, the entire description of which is incorporated herein by reference.

FIELD OF THE INVENTION The invention relates generally to a public access stairway system and more particularly, to a public access stairway system for use in a scaffolding system.

BACKGROUND Stairs of public access can allow users to have temporary or semi-permanent access to bleachers, private boxes and other platforms. Scaffold mounts are generally known and typically include vertical and horizontal members that are connected together. Such assemblies typically allow a relatively quick erection and dismantling. However, attempts to use public access stairway units in conjunction with scaffolding have not been feasible or, in the best case, are difficult to execute. For example, large quantities of on-site manufacturing of items such as handrails, entrances, turns and the like, have typically been required. Therefore, it would be desirable to provide a public access stairway system that allows the rapid installation of the stairways in the scaffolding, so that problems, including on-site manufacturing of the components, are substantially reduced or eliminated.

SUMMARY OF THE INVENTION In accordance with at least one aspect of the present invention, a public access stairway assembly is described for use with a scaffold assembly having horizontal members that connect to vertical members. The public access stairway assembly comprises a plurality of bracket mounting brackets for the rails for connection to a scaffolding assembly; a stringer mechanism connected to a plurality of stringer bracket mounts; a railing assembly having a plurality of railing post mechanisms, capable of supporting a railing mechanism and a protection panel structure, the pole mechanisms are connected to the plurality of bracket mounting brackets of the rails of The staircase; and a plurality of stairway units which is connected, at least indirectly to at least one of the plurality of bracket support bracket assemblies, the stair stringer mechanism and the post mechanisms of the handrail, the plurality of staircase units, allow a user of the public access stairway assembly to ascend to an upper end of the stairway assembly and / or descend to a lower end of the stairway assembly. In accordance with another aspect of the present invention, a method for mounting a public access stairway system is described. The method includes providing a scaffold assembly that includes a plurality of vertical members that is connected to a plurality of horizontal members; providing a plurality of bracket clamp mounts and connecting the plurality of bracket clamp mounts to the mounting of scaffold; providing a public access stairway assembly having a railing assembly that includes a plurality of railing post mechanisms, the stairway assembly further includes a plurality of stairway units; and connecting the public access stairway system to the scaffold assembly using the plurality of support clamp mounts, so that the plurality of post mechanisms are in line with respect to the plurality of vertical members of the scaffold. In accordance with another aspect of the present invention, a method for mounting a public access stairway system is described. The method includes providing a scaffold assembly having a plurality of horizontal members of the scaffold that is connected to a plurality of vertical members of the scaffold.; providing a plurality of bracket mounting brackets for the stringers; connecting the plurality of bracket support bracket mounts to the support scaffold assembly; providing a plurality of stringer mechanisms having a plurality of stairway units secured thereto; connecting and securing the plurality of stringer mechanisms to the plurality of stringer bracket mounts; provide a plurality of handrail post mechanisms; connecting the plurality of post mechanisms of the handrail to the plurality of bracket mounting brackets of the spars; provide a plurality of protection panels; connecting the plurality of protection panels to the plurality of posts of the handrail; providing a handrail or segment of the handrail and connecting the handrail or segment of the handrail to the plurality of posts of the handrail and to the plurality of protection panels. Various embodiments of the invention, including various embodiments and methods are described, contemplated and considered within the scope of the present invention. Assembly and inventive methods provide numerous benefits, including, in the manner of example and not limitation, installation and rapid dismantling, resulting in a reduction of costs (for example, reduced labor costs). Other benefits will be evident from the detailed description that follows.

BRIEF DESCRIPTION OF THE DRAWINGS The embodiments of the invention are described with reference to the accompanying drawings and are for illustrative purposes only. The invention is not limited in its application to the details of construction or arrangement of the components illustrated in the drawings. The invention is capable of other modalities or of being practiced or carried out in various other ways. Similar reference numbers are used to indicate similar components. In the drawings: FIG. 1 illustrates a side view of a public access stairway system having a stairway assembly according to at least some embodiments of the invention, the assembly is shown without a handrail assembly supported by an exemplary scaffold assembly; FIG. 2 illustrates a side view showing a portion of the inventive public access stairway system of FIG. 1, amplified to better illustrate various components of the stairway assembly and including a handrail assembly; FIG. 3 is an exploded perspective view of a portion of the public access stairway system, according to at least some embodiments of the invention; FIG. 4 is a side view of a portion of the public access stairway system, taken along line 4-4 of FIG. 2; and FIG. 5 is an inverted bottom perspective view showing a modality of a segment of an access stairway system public. Various equipment items, such as attachments, fasteners, etc., have been omitted from the drawings. Those skilled in the art will realize that such conventional equipment can be used as desired. In addition, in certain of the drawings, various system components or assemblies or sub-assemblies may be omitted. In general, those skilled in the art will recognize that such omissions are by design and are to simplify the drawings and the associated description of the invention in its many embodiments.

DETAILED DESCRIPTION OF THE INVENTION A public access stairway system is described herein which may be used to provide, by way of example, temporary or semi-permanent access to bleachers and private boxes. The access stairway system is advantageously compatible with the scaffolding systems. Advantageously, the inventive system can be used as a means of public access to bleachers and other platforms that require stairways to achieve such access. Figures 1 and 2 illustrate a public access stairway system, generally referred to with the number 20, according to at least some embodiments of the invention. As an introduction, it is noted that the drawings essentially illustrate the segments or portions of various embodiments of the invention. In use, additional segments or portions, similar or identical to those shown and described herein, or similar or identical to the segments or portions that are provided in accordance with other embodiments of the present invention, are assembled, connected or provided from another way in mechanical association with other similar or identical segments or portions to assemble a mounting system of final or full public access stairway that is suitable for use. The public access stairway system 20 includes a public access stairway assembly, generally referred to as number 22. The stairway assembly 22 is connected to, or more generally can be considered in mechanical association with, a scaffolding assembly, which is generally referred to as the number 24. Accordingly, the public access stairway assembly 22 is supported, at least indirectly, by the scaffolding assembly 24. An exemplary scaffolding system contemplated for use in conjunction with the public access stairway assembly 22 is the Safway® Systems Scaffold, which is available from ThyssenKrupp Safway, Inc., located in Waukesha, Wisconsin. The inventive stairway system is designed to use or work in conjunction with, including the Safway Systems ™ Scaffold, so that the scaffolding system serves as a support structure for the public access stairway system. However, it is understood that the present invention should not be limited to this or necessarily to any particular scaffolding system. Still referring to Figures 1 and 2, the scaffolding assembly 24 includes scaffold horizontal members 30, which typically take the form of tubes or tube-like structures, as well as a vertical scaffold or pole members 32, which also typically take the shape of tubes or structures similar to tubes. The horizontal and vertical members are connected at predetermined distances to achieve a desired slope. According to at least some embodiments, the scaffolds or the scaffolding assembly 24 provide or permit attachment or connection of a horizontal scaffold tube 30 to a vertical scaffold post 32 each 53.34 cm (21 inches) vertically and this is indicated by Diagram A. According to at least some modalities using the scaffold system indicated above, a horizontal support (eg, a horizontal support of 90.24 cm (3 feet) SBR3 of Safway Systems Scaffold) can be combined with or connect to the vertical poles (for example, a Vertical Pole of Safway Systems Scaffold) to create the necessary slope. The scaffolding assembly 24 includes a primary clamp or connector mechanisms 34 for connecting the horizontal and vertical members of the scaffolding 30 and 32, respectively. The scaffolding assembly 24 further includes additional connector mechanisms 36 (only shown in FIG 1) and bracket assemblies 38 (again, only shown in FIG 1), which typically include a plurality of strap mechanisms, and which they are used to connect and support the horizontal and vertical members of the scaffolding 30 and 32, respectively, or over a longer section. More specifically, such additional struts are typically included to provide additional support and stiffness as needed. The configuration of such struts may vary (e.g., in size, shape, number of components of the struts, etc.), depending on a variety of factors associated with the 15 particular end-use application, for example, a load required to be supported on a given stretch. Those skilled in the art will recognize that the invention is not limited to the geometry mentioned above or to any particular geometry or connection scheme or format. As shown, the public access stairway assembly 22 includes a plurality of stringer mechanisms 40, or stringers, and the stringer mechanisms are connected to and serve, at least in part, to support the stairway units 42 via the supports. of the stairway unit 44. Each spar 40 is a modular unit that is light in weight, 25 and cheap to manufacture, transport and handle. As specifically illustrated in FIG. 2, the stairway assembly 20 further includes a handrail assembly 21. The mounting 21 includes handrail posts or post mechanisms 46 that are connected to and supported by the stringer mechanisms 40 and the scaffolding assembly 24. The posts of the railing 46 allow the union secure from each segment of handrails 48, which constitute a handrail 50. The panels 52 (two of which are shown) are included and secured to, or captured by, handrail poles and handrail segments 48. These panels are made typically of wood (e.g., plywood) and may be referred to as "protection panels", since they can generally serve to provide additional security to the users who walk in the stairway assembly 22. The posts of the rail 46 also include a or more plates 47 that allow the joining of a segment of handrails 48. In the present embodiment, this handrail segment 48 comprises an integral channel 49 that covers, or substantially covers, the upper edge or portion (typically exposed) of the panels. plywood 52. The channels 49 have plates 47 at either end which serve to couple the handrail segment, so that the handrail 50 is a handrail and xtended, uniform and continuous for the system 20. Here again, those skilled in the art will recognize that variations to the illustrated embodiment, for example, changes to the size, shape and geometry of the components of the assembly, are contemplated and considered within. of the scope of the present invention. FIG. 3 is an exploded perspective view of a modality of the public access stairway system 20. As indicated above, the stairway system 20 includes a stairway assembly, generally referred to by broken lines and the number 22, which is connected to the stairway. scaffolding assembly, which is generally referred to by dashed lines and the numeral 24. The stairway assembly is again shown as including a stringer mechanism 40 which is connected to the stairway unit 42 via the brackets 44. The stairway assembly includes in addition, a handrail assembly 21. The assembly 21 includes posts of the handrail 46 that are connected to the handrail segment 48 and used, at least in part, to capture or otherwise secure the protection panel 52. In other words, each of the post mechanisms of the handrail typically includes a seat mechanism (or simply "seat") on its sides, which can be used to contain or otherwise capture a sheet or piece of plywood or other material, generally with the number 52 between (2) posts of the adjacent railing 46. This plywood or other material can serve as the protection panel along the stairway section 42 of the stairway assembly 20. The scaffolding assembly again includes horizontal and vertical support members 30 and 32, respectively, which are connected by clamp mechanisms 34. Advantageously, the public access stairway system 20 incorporates spar support brackets, or bracket support bracket assemblies, which are indicated by the number 54. Each of the support brackets of the stringer the stringers 54 includes a coupler pin or coupling mechanism 55 which has spreads of male projections 56a-b on its upper and lower sides, which allow coupling (eg, via sliding insertion) with the upper end 57 of a vertical member of the respective scaffolding 32 and a lower end 59 of a post of the respective guardrail 46. In at least some embodiments, the coupling can be achieved with the respective coupling mechanism removed from the respective support bracket clamp. The support brackets of the spars 54 include plates or mechanisms similar to a plate, indicated by the numeral 60, and which are otherwise connected or secured to their respective coupling mechanism 55. According to at least some embodiments, the plates 60 create a space similar to a saddle that serves to support a stringer of the respective stairway 40. More specifically, the plates 60 at least temporarily hold the stringers 40 in place, thereby securing the stringers to the assembly of the scaffolding 24. In at least some embodiments, the space in the shape of a saddle or similar to a saddle can be a V-shaped space, or substantially V-shaped, in other modalities, the space with a similar shape to a saddle can be U-shaped or substantially U-shaped, and in still other embodiments, space shaped like a saddle can take other geometries. The male projections 56b on the upper side each include a connection mechanism 62 that creates a connection for the respective handrail post mechanisms 46. In the embodiment shown, the mechanisms 62 take the form of an internal pressure adjusting mechanism or a snap-fit button that serves to achieve the respective connections via snap-fitting. The lifting clamp mechanisms 64, connected to the clamps 34, are also incorporated and used as described below. Here again, those skilled in the art will recognize that variations to the illustrated embodiment, for example, changes in the size, shape and geometry of the components of the assembly, are contemplated and considered to be within the scope of the present invention.

Use / Installation With reference to FIG. 3, according to at least some embodiments of the invention, the installation and / or assembly of the public access staircase assembly 20 can take place as follows; a support scaffold 24 is typically mounted and provided (or subsequently provided and assembled) in an appropriate manner, by connecting the horizontal and vertical members of the scaffolding 30 and 32 via the primary clamp members 34; the bracket support bracket assemblies 54 are provided and connected to the support scaffold by coupling the male projections 56a with the vertical members of the scaffolding 34, the spars 40 (having stairway units 42 or steps joined or otherwise secured). to them) are then provided and connected to the bracket support bracket assemblies via the connecting elements, such as the nut 66 and the bolt 67 shown; the lifting clamp mechanisms 64 are then provided and connected, for example, by using connecting elements, such as the beam nut 68 and the bolt 69 shown, to secure the support brackets of the spars and the spars to the scaffolding; railing poles or pole mechanisms 46 are provided and connected to the bracket support bracket assemblies 54 via, for example, the snap coupling described above; protection panels 52 (each of which is shown) are provided and connected to the posts of the railing 46; and a handrail or segment of the handrail 48 is provided and connected to the posts of the railing 46 and to the protection panel 52. It is contemplated that the above steps can be combined (to reduce the total number of steps), segregated (to increase the number of steps), rearrange and / or reorder as necessary to facilitate the installation process, and such modifications should be and are within the scope of the present invention. The dashed lines in the Figure illustrate the respective coupling of the elements referred to above. Thus, in order to disconnect or otherwise disassemble the system 20, the process referred to above would be reversed. Those skilled in the art will recognize that variations to this method, consistent and in accordance with the various embodiments of the present invention, are contemplated and considered within the scope of the present invention. Advantageously, the support bracket assemblies of the stringers 54 allow the step assembly 22, including the pole mechanisms of the railing 46 and the support mechanisms of the stair stringer assembly 40, to be connected in line with the mounting of support scaffold 24, including the vertical support members of the scaffold assembly 32.

As already indicated, the drawings illustrate segments or portions of an exemplary system according to at least some embodiments of the invention. In practice, and although not shown, additional segments or portions, similar or identical to those shown and described herein (or similar or identical to the segments or portions that are provided in accordance with other embodiments of the present invention) , can be assembled, connected or otherwise provided in mechanical association with other similar or identical segments or portions to mount a final public access stairway mounting system suitable for use. Furthermore, note that the installation, as described herein, is typically a manual process, however, the automation of various aspects of the installation procedure is contemplated and considered within the scope of the present invention. In addition, someone skilled in the art will recognize that the term "connect" (and similar terms) used herein, should include, where appropriate, both direct and indirect connection. FIG. 4 is an enlarged side view of a portion of the public access stairway system, taken along line 4-4 of FIG. 2. As shown, a vertical member of the scaffold 32 engages (as shown, slidably coupled) with the male projection 56a of the coupling pin mechanism 55 of the bracket support bracket assembly 54. And the lower end of the handrail post 59 of the handrail post member 46 engages (again, as shown, slidably coupled) with the male projection 56b of the coupling pin mechanism 55 of the clamp assembly 54. As previously indicated, the coupling of the lower end 59 with respect to the coupling mechanism 55 is achieved, in at least the present embodiment, via a snap connection mechanism 62. The pole member of the guardrail 46 supports and anchors the guard panels 52. The clamp elevation 62, which is positioned adjacent a connector mechanism of the primary scaffold 34 and connected to the plate mechanisms 60 (one of which is shown). The plate mechanisms 60, as indicated above, serve to support the stringer mechanisms 40. The plate mechanisms are secured to the stringer mechanisms via the connectors 70 and 71, which typically comprise a combination of nut and bolt. For example, and with reference also to FIG. 3, the connector 71 includes a nut 68 and a bolt 69. The connector 71 also serves to secure the plates 60 and the stringer mechanism 40 to the mechanisms of the lifting bracket (or "bra") 62. The temporary supports 74 and 76 are shown and included to provide support for the stringer mechanisms during assembly prior to final securing of the stringer mechanisms in position. The connectors 78a-b are included to secure the plates 60 to the coupler mechanism 55, and more generally, to the support bracket assembly of the spar 54. An exemplary or representative stairway unit 42 is also illused. According to at least some embodiments, and as shown, the stairway unit 42 includes a plurality of tables 43, or table mechanisms, typically having steps (not shown), which are secured to the support mechanism of the unit. representative stairway 44, via the connection mechanisms 47. As shown, by way of example, the connection mechanisms include combinations of nut and bolt. The supporting mechanism of the stairway unit 44 is connected to the stringer mechanism 40. In at least some embodiments, one or more supporting mechanisms of the stairway unit can be integrated with one or more stringer mechanisms. FIG. 5 is a reverse bottom perspective view showing a modality of a public access stairway system 80. The system 80 again includes a public access staircase assembly, generally referred to as the number 82, which is connected to and supported by a scaffolding assembly, which is generally referred to as No. 84. Scaffold assembly 84 includes horizontal members of the scaffold 86 vertical members of the scaffold or post 88, both of which may, but need not, take the form of tubes or structures similar to tubes. The scaffolding assembly 84 again includes primary clamps or connector mechanisms 90 for connecting the horizontal and vertical members of the scaffold, respectively. According to at least some embodiments, the public access stairway assembly 82 includes stringer mechanisms 92, or stringers, and the stringer mechanisms are connected to, and serve to support, at least in part, the stairway units 94. As indicated above, each stringer 92 is a modular unit that is lightweight and inexpensive to manufacture, sport and handle. Ladder assembly 82 further includes guardrail poles or pole mechanisms 96 that are connected to and supported by stringer mechanisms 92 and scaffolding assembly 84. Handrail poles 96 permit secure attachment of each handrail segment 98 (which again, are used to constitute a handrail or assembly of continuous handrails, as indicated in this). Panels 102 (two of which are shown) are included and secured to the handrail posts and the handrail segments 98. Again, these panels are typically made of wood (e.g., plywood) and may be referred to as "plywood panels." "protection", since they generally serve to provide additional security for users who walk in the stairway assembly 82. The posts of the rail 96 also include one or more plates 97 that allow the joining of a segment of handrails 98. In the present embodiment, each handrail segment 98 comprises an integral channel 99 that covers, or substantially covers, the upper edge (typically exposed) of the plywood panels 102. The channel may also serve to couple the handrail segment, so that he Handrails or mounted handrail mounting is an extended, uniform and continuous handrail for system 80 via plates 97 at either end of the channel. Brace support bracket mounts 104 are included and used to secure the poles of the guardrail 96 of the public stairway assembly to the vertical post mechanisms 88 of the scaffolding assembly 84. The stairway assembly, including the mechanisms of The railing post and the brace support mechanisms are connected in line with the support scaffold assembly, including the vertical support members of the scaffold assembly, so that the scaffold and stairway assemblies can be integrated with the scaffold assembly. another and connect continuously or substantially continuously. As a result, a public access stairway system is provided that allows public access to and within various settlements and other destinations, such as bleachers and private boxes. The access stairway system is advantageously compatible with the scaffolding systems. The system includes a staging assembly that can be installed, so that it is in mechanical association with an applicable or desired scaffolding system, and several efficiency benefits (eg, a minimum number of parts). Although the present invention is intended to be highly reliable, all physical systems are susceptible to failure and provisions must be made for such failures. Accordingly, it will be understood that safety, in an industrial process, depends on a wide variety of factors outside the scope of the present invention, including, for example, the design of the system; the installation and maintenance of system components; the cooperation and training of the individuals that use the system and the consideration of the failure modes of the other components that are used. No representation is made in the present, that the present invention in its various modalities, will make a secure industrial process, and is not made any recommendation in the present to use a preferred modality on or with the exclusion of another. Instead, the invention results in several advantages not achieved by the above solutions. It is specifically intended that the present invention is not limited to the embodiments and illustrations contained herein, but includes modified forms of those modalities that include portions of the modalities and combinations of elements of different modalities, which fall within the scope of the following claims. More generally, although the present invention has been shown and described in terms of various modalities, including at least one preferred embodiment, it is recognized that equivalents, alternatives and modifications, apart from those expressly indicated, are possible and are considered. within the scope of the appended claims.

Claims (19)

1. A method for mounting a public access stairway system, the method comprises: providing a scaffold assembly including a plurality of vertical members that are connected to a plurality of horizontal members; providing a plurality of support bracket assemblies and connecting the plurality of support bracket assemblies to the scaffolding assembly; providing a public access stairway assembly having a railing assembly that includes a plurality of railing post mechanisms, the stairway assembly further includes a plurality of stairway units; and connecting the public access stairway system to the scaffold assembly using the plurality of support clamp mounts, so that the plurality of post mechanisms are in line with respect to the plurality of vertical members of the scaffold.

2. The method according to claim 1, characterized in that each of the bracket support brackets assemblies includes a coupling mechanism and the connection includes securing the plurality of bracket support bracket assemblies to the support scaffold assembly , by sliding coupling of the respective coupling mechanism to a respective one of the vertical members of the scaffold.

3. The method according to claim 2, characterized in that the connection includes slidingly engaging the respective coupling mechanism to a respective one of the post mechanisms of the handrail.

4. The method according to claim 1, characterized in that it further comprises, providing a plurality of stringer mechanisms that is connected to the plurality of stairway units and connecting the plurality of stringer mechanisms to the plurality of bracket mountings of the stringers. stringers.

5. A method for mounting a public access stairway system, the method comprises: providing a support scaffold assembly having a plurality of horizontal members of the scaffold, which is connected to a plurality of vertical members of the scaffold; providing a plurality of bracket mounting brackets for the stringers; connecting the plurality of bracket support bracket mounts to the support scaffold assembly; providing a plurality of stringer mechanisms having a plurality of stairway units secured thereto; connecting and securing the plurality of stringer mechanisms to the plurality of stringer bracket mounts; provide a plurality of handrail post mechanisms; connecting the plurality of post mechanisms of the handrail to the plurality of bracket mounting brackets of the spars; provide a plurality of protection panels; connecting the plurality of protection panels to the plurality of posts of the handrail; provide a handrail or a segment of the handrail; and connecting the handrail or the handrail segment to the plurality of posts of the handrail and to the plurality of protection panels.

6. The method according to claim 5, characterized in that each of the support bracket assemblies of the stringers includes a coupling mechanism and the connection to the plurality of support bracket assemblies of the stringers to the support scaffold assembly includes slidingly coupling the coupling mechanism with one of the vertical members of the scaffold.

7. The method according to claim 6, characterized in that the coupling mechanism includes a male projection, wherein the coupling includes sliding the male projections with respect to a vertical member of the scaffold.

8. The method according to claim 6, characterized in that the coupling mechanism includes another male projection and wherein the connection of the plurality of post mechanisms of the handrail to the support bracket assemblies of the beams includes slidingly engaging the Male projection of the coupling mechanism with respect to one of the post mechanisms of the handrail.

9. The method according to claim 8, characterized in that the connection of a respective one of the plurality of post mechanisms of the handrail to a respective one of the bracket mounting brackets assemblies includes the snap coupling.

10. The method according to claim 5, characterized in that the bracket mounting brackets of the stringers allow at least one of the plurality of post mechanisms of the railing and the plurality of bracket support mechanisms of the stairway assembly, connect in line with the scaffold assembly.

11. The method according to claim 10, characterized in that at least one of the plurality of post mechanisms of the handrail and the plurality of support mechanisms of the stair stringer assembly is connected in line with respect to the plurality of support members vertical scaffolding assembly.

12. A public access stairway assembly for use with a scaffold assembly having horizontal members that are connected to vertical members, the public access stairway assembly comprises: a plurality of stringer mounting brackets for connecting to a scaffolding assembly; a stringer mechanism connected to a plurality of stringer bracket mounts; a railing assembly having a plurality of railing post mechanisms, capable of supporting a railing mechanism and a protection panel structure, the pole mechanisms are connected to the plurality of bracket mounting brackets of the rails of The staircase; and a plurality of stairway units which is connected, at least indirectly to at least one of the plurality of bracket support bracket assemblies, the stair stringer mechanism and the post mechanisms of the handrail, the plurality of units Staircase allows a user of the public access stairway to ascend to and / or descend from the staircase units of the stairway assembly.

13. The assembly according to claim 12, characterized in that the support bracket assemblies of the stringers include a coupling mechanism for coupling each of the assemblies to a pole mechanism of the respective railing, and a respective vertical member or member horizontally of the scaffold assembly, with which the public access stairway assembly can be used.

14. The assembly according to claim 12, characterized in that the railing assembly includes a protection panel and the pole mechanisms of the railing include a mechanism to be captured, contained or otherwise connected to the protection panel.

15. The assembly according to claim 14, characterized in that the post mechanisms of the handrail include a device similar to a plate for connecting the post mechanism to at least a portion of the handrail.

16. The assembly according to claim 15, characterized in that at least a portion of the handrail includes a channel and wherein the channel can be used as a handle and / or a channel for connection to the panel.

17. The assembly according to claim 1, characterized in that a plurality of mechanisms similar to a plate is connected to the bracket mounting brackets of the stringers, and the mechanisms similar to a plate create each one, an area similar to a saddle to support the stringer mechanism of the stairway.

18. The assembly according to claim 17, characterized in that the stringer mechanism of the stairway is a modular unit.

19. The assembly according to claim 12, characterized in that it further comprises a lifting clamp mechanism that is used to secure the support brackets of the spars and the spars to the scaffolding assembly.