Patent GB-434138-A (GB)
Title: Improvements in or relating to reinforced or other concrete floors, walls and other like structures
IPC: E04B9/00
Filed: 1934-03-21
Abstract: 434,138. Floors; walls; roofs. AIREY, SIR E., 7, Blenheim Terrace, Woodhouse Lane, Leeds. March 21, 1934, No. 8878. [Class 20 (iv)] A concrete floor, wall, roof, or like structure is provided with a surface facing 8 spaced therefrom by means of two coacting sets of rigid rib-like elements 9, 9<a>, one set running transversely or angularly with respect to the other set, and both sets being so shaped on their engaging faces as to ensure substantially only point contacts between them. The structure may be provided with ribs 3 as shown in Fig. 1, and these may be formed by the introduction of hollow tiles, domes of expanded metal, or other units 4, which may be left in the finished structure. The facing 8, which may be finished with a cementitious coat, may consist of one or more of the following: expanded metal, wooden or other lathing, pre-cast slabs, or boards of pulp, fibre, or asbestos. Timber battens 1 are applied to the underside of the ribbed portions 3 of the structure either before or after casting the latter, and are adapted to be connected in spaced relationship with reinforcing rods 5 of the structure by distance pieces 6 and clips, staples, wire or like fastenings 7, which may also serve to position the units 4. The rib-like elements 9 are secured to the facing 8 by means of wires, clips, &c., and the elements 9<a> are secured to the battens 1 by staples, wires, &c. The facing 8 is secured to the battens 1 by staples 10 which embrace the elements 9. The construction shown in Fig. 1 may be modified by placing the elements 9<a> transversely to the battens 1 and the elements 9 parallel with the battens 1 ; or the two sets of elements may be arranged angularly with respect to each other, or to the battens 1. The elements 9 may be formed integral with the facing 8, which may be of expanded metal and have the elements 9 formed by pressing or rolling, separate strengthening ribs also being employed as described in Specification 401,517. When the facing is of pre-cast slabs of fibrous plaster, concrete, &c., the ribs 9 may be cast integrally with the slabs or formed separately and attached thereto by clips &c. Insulating means may be inserted between the elements 9<a> and the battens 1, or between the battens 1 and the structure, and such means may consist of felt, paper, &c. in strip or sheet form extending over the whole or part of the structure. The insulation may be in the form of strips secured to the battens 1 and employed in multiple superimposed layers. In a modification, the upper set of rib-like elements may be in the form of metal or other bars, rods, tubes, &c. 11, Fig. 2, supported by hangers 12 anchored in the structure. The bars 11 may, as shown in Fig. 3, be supported from the hangers 12 by clips 14. Insulation means in the form of felt, rubber, fibre, &c. may be placed between the hanger 12 and the element 11. As shown in Fig. 3, insulation 16 is inserted between the hanger 12 and the clip 14. A projection 15 on the hanger 12 rests upon temporary supports 13 for the units 4 and serves to hold the hanger in position until the concrete has set. Any of the ribs 9 may be continuous or gapped. The ribs 9<a> secured to the batten 1 may be staggered as shown in Fig. 4, and the ribs on the facing 8 may be similarly arranged. Gratings or other openings may be provided in the facing 8. The concrete structure need not be of the ribbed type illustrated. The Provisional Specification describes also the direct attachment of a ribbed surface facing to battens secured to the structure.