Patent GB-424266-A (GB)
Title: A new or improved method of constructing buildings and structures and pre-cast concrete building blocks for use therewith
IPC: E04B2/14
Filed: 1933-08-15
Abstract: 424,266. Walls; girders; bricks. REINFORCED CONCRETE BUILDINGS, Ltd., and TEMPLE, J. E., 2, Robert Street, Adelphi, London. Aug. 15, 1933, No. 22779. [Classes 20 (iv) and 87 (i)] A wall comprises pre-cast blocks b, f of cement or concrete, each of which extends through the entire thickness of the wall and is so constructed that, when laid in position, vertical and horizontal cavities are provided at suitable points throughout the wall for the reception of steel rods d and concrete in order to form a reinforced-concrete skeleton structure, which embodies stanchions and stringers, and is strong enough to withstand all the loads due to the weight of the building, superimposed loading, wind pressure and the like, and the spaces between the stanchions and girders are filled with standard wall blocks a. The wall blocks a are adapted to serve as a waterproof filling only and to extend through the entire thickness of the wall. Vertical cavities a<1> are provided in the wall blocks a and vertical corrugations a<2> are provided in the end faces to form channels which may be filled with grout or left open. The stanchion blocks b correspond to half the standard block a, with a projecting flange bl as shown in Fig. 3, and these blocks are laid alternately on opposite sides of the stanchion cavity c. Vertical reinforcement d is placed in the cavity c, and flat slabs e, Fig. 1, are superposed to close the inner face of the cavity, which is then filled with concrete. A small slot el, Fig. 3, is formed at the ends of each slab e to accommodate the projecting end of a spike which is driven into the horizontal joint between adjacent blocks a for the purpose of holding the slabs in position. The stringer blocks f are of channel-section and may be built up of two L-shaped halves f<1>, Fig. 4, which may be disposed in contact, or, for wider walls, with an intervening strip f<2> of the desired width. In order to avoid the use of special blocks where the vertical stanchions intersect the stringers, the stringer blocks may be moulded with transverse and longitudinal slots g, g<1> as shown in Fig. 9, to permit either half of the flange to be knocked away to provide an aperture above a stanchion. Alternatively, the stringer blocks may be provided during moulding with two embedded strips of tin plate for the purpose of forming the lines of weakness. The corner block may, as shown at M, Fig. 1, correspond to a stanchion block b, with a right-angled extension provided at the end of the projecting flange; or it may be in the form of a L-shaped unit as shown at M<1>, Fig. 8. Reinforcement d and concrete is provided in the corner blocks to form corner stanchions. The reinforcing rods of the stanchions and beams may be formed with U-shaped ends which are arranged in hooked or overlapping relation. The stringer beams are preferably located at floor level and the concrete of the floor is merged into the beams. The stringer blocks may be used to form lintels over wall openings. For internal walls, the blocks are formed of porous concrete, and, for exterior walls, the outer face of the blocks is of dense concrete and the inner face is of porous concrete. Specifications 304,894, [Class 20 (iv)], and 424,268 are referred to.