126 Re-inforced Concrete for Farm and Estate Purposes. 



for the posts oi- for the walls themselves. In the erection 

 of the buildings the site is levelled, and the posts are set up 

 along the lines of the walls, at about 8 ft. intervals, by bedding 

 each of them to a depth of about 1 ft. G in. in concrete. The 

 re-inforcement for the walls is then put into position, by 

 threading ^ in. steel wires through holes produced in the posts, 

 for that purpose, during their manufacture, by placing cross- 

 bars in the moulds. Vertical re-inforcement of J in. steel 

 wire is attached to the horizontal by means of thin binding 

 wire, which jBxes the re-inforcement so that it cannot be 



Fig. :5. -ilould fur columns. 



displaced when the concrete is filled in round it. Thus, at 

 this stage the wall consists of a row of posts, each one joined 

 to the next by a network of steel wires. The construction 

 then proceeds by fixing wooden forms between the posts, one 

 on each side, the posts providing attachment and being the 

 vertical guides for the forms, which are made to give a 

 uniform width, or wall-thickness, of 4 in. and the inter- 

 vening space, with the re-inforcement in the middle, is filled 

 up with concrete, no foundations l)eing required (Fig. 4). 

 The concrete is mixed fairly moist, and the forms build up, 

 one over the other, as the work proceeds. In mild weather 



