Re-inforced Concrete for Farm and Estate Purposes. 127 



usually two are filled in each day. Additional strength can 

 be Imparted to tlie piers at any point by setting up several 

 coluums together, and this is always necessary when they are 

 to be carrit'd up for another storey. In these cases piers 

 composed of clusters of two, three, or even four columns are 

 used ; they are constructed of posts of varying lengths, so as to 

 break joint, and extra re-inforcement is placed in the hollow 

 spaces between them, which are then filled up with concrete. 

 Provision must be made, particularly in a long wall, for 

 expansion of the material, and this is done by inserting 

 ruberoid, or felt, between coupled posts. 



Fig. 4.— Showing construction of Wall. 



The granary and other second storey buildings are carried on 

 concrete beams, about 12 in. by 15 in., re-inforced with the 

 necessary amount of ^ in. steel bars. Across these beams are 

 laid reinforced concrete floor joints. They are about 8 in. by 

 4 in. and are constructed in advance. They are rebated to a 

 depth of 2 in. on each side of the upper surface, to form a 

 bearing for the concrete paving slabs which constitute the 

 flooring. These slabs are made 2 ft. square, and 2 in. deep, 

 and are re-inforced with expanded metal. They are made 

 either at the yard or on the site, in moulds^ and when dropped 

 into position in the rebates of the floor joists, they receive a 

 grouting of cement and the floor is complete (Fig 5). 



