Patent GB-443028-A (GB)
Title: An improved method and means for the construction of reinforced concrete buildings
IPC: E04B1/21
Filed: 1934-08-16
Abstract: 443,028. Walls; ; floors; casting in situ. GODENIR, A., 32, Rollscourt Avenue, Herne Hill, London. Aug. 16, 1934, No. 23687. [Classes 20 (ii), 20 (iii), and 20 (iv)] Relates to apparatus for casting vertical columns in situ between the two spaced parts of a cavity wall formed of pre-cast blocks or slabs, and consists of a diaphragm member x, Fig. 13, having means for suspending it between' the opposed layers of the wall and provided with a wedge-shaped or tapered projection x<1> adapted to mould either a gap in the column, or, where the column is at a dead end in the wall, such as at a door or window opening, a depression in the column. The diaphragm member x is suspended in position by lugs x<2>which are bored to receive screw-threaded rods x<3> engaging in a turnbuckle x<4>. The turnbuckle x<4> is turned to secure the apparatus in position as shown in Figs. 14 and 15. For erecting a column adjacent a door or window opening, a single apparatus x is arranged in spaced relation to the jamb w, as shown in Fig. 14, so that the projection x<1> moulds a depression in the column. At other positions in the wall, two sets of apparatus x are arranged in opposed relation with the projections x<1> in contact so that these may mould a gap through the column. At a wall corner, the two sets of apparatus are arranged at right angles to each other with the adjacent tapered faces of the projections x<1> in contact so as to mould a gap through the column. The column adjacent a door opening may be cast between an apparatus x, Fig. 1, and temporary shuttering 12 detachably attached by brackets 11 to the door 10, which is arranged with one arm 13 of its hinge embedded and anchored in the concrete of the column. The reinforcing rods of the column are arranged on each side of a projection x<1> and are connected at intervals by stirrups. These rods are held in spaced relation by a cast iron or other metal device r, Fig. 12, which is arranged at the top of a column with the arms r<2> of the device shaped to receive the reinforcing rods of the column and the arms r<1> slotted to receive rods h which reinforce the floor or ceiling beams. The outer layer of blocks or slabs is bedded in a bituminous compound. The Provisional Specification also describes a method of making a floor formed of a plurality of intersecting reinforced-concrete beams. A plurality of units, each in the form of two superposed members a, h screwed to a number of upstanding members c is arranged to form a skeleton framework as shown in Fig. 9. The member a is shorter than the member b to provide at each end a shoulder for engagement by the head of a supporting bolt o. The member b is narrower than the member a to provide a rebate on each side for supporting a ceiling slab g. Two superposed pairs of reinforcing rods h are arranged above each of the units as shown in Fig. 10, being secured on the bolts o by means of supporting washers m, ferrules p and nuts n, and stirrups k are also provided. In the spaces between the units, grid-like floor boxes in the form of interengaging members d, e, f are provided as shown in Fig. 11, and the peripheral members of these boxes are pegged to the upstanding members c of the units. This structure, which is built upon a lower floor, is lifted into correct position and concrete is cast in the channels provided between the boxes in order to form intersecting beams. Certain parts of the floor boxes project into the channels so as to key with the concrete cast therein. The members a, b may be removed after casting the concrete, and the channels thus provided may be used for housing electric conduits, gas pipes, &c.