Re-inforced Concrete for Farm and Estate Purposes. 131 



iron and. two of wood, joined by iron pins. By means of two 

 cams turned by a key the strap can tighten up all four sides. 

 One strap is placed at the bottom of the upper mould, one at 

 the top of the two-foot lengths. To build a column, the two 

 long lengths are placed in position, as also are two short ones ; 

 the re-inforcements are then put in place, and the mould is 

 filled with concrete, 'a little at a time, each filling being tamped 

 by special rammers, one which is flat enough to pass between 

 the re-inforcing bar and the mould, incidentally acting as a 

 gauge at the same time. When the first or short length is full, 

 the second is placed on it and also tilled, and this process is 

 repeated until the column is the required height. 



C/ip Bar i 

 OS botto 



f>eoded Bolt A ' 

 '" place o/ hoofed 



Side E|gvofior> 



Catch 

 12)' 3 OOP OOy- ^"pporl.n^ Cl,p Bar 



FIC 7. 



^fVaioKr Moulds 



The moulds for forming the panels or walls (Fig. 7) each 

 consist of fiat boards bound together by angle iron. These are 

 used in pairs, and are separated and kept parallel by distance 

 pieces, and held together by ties of flat iron. The chief dis- 

 tinction between these moulds and those used at Hardwicke 

 is that the boards composing them are fixed vertically in the 

 first case and horizontally in the second. Apparently the vertical 

 method is preferable, as by it curved walls are made possible. 

 The moulds may be any length up to 10 ft. long and 2 ft. deep, 

 and thej' are strengthened with angle iron on the outside, 

 both along the top and 6 in. from the bottom. The process of 

 building a wall with these moulds commences at a column. 



K2 



