300 FARM BUILDINGS IN SOUTH AFRICA 



6" cement concrete top, holed for, and fitted with, approved pattern heavy 

 cast-iron single seal manhole cover and frame. 



Provide and set half-section, white-glazed channel in bottom of 

 inspection chamber, and deeply flaunch bottom in cement, as shown in 

 drawing. 



Render interior of inspection chamber to smooth and even surface 

 with 1 to 2 cement plaster. 



Size of inspection chamber internally 3' 0" by 2' 0" by 3' 0" deep. 

 Depth approximate, and to be actually governed by the levels of ground. 



Sumps. — Excavate for and construct No. 2 sumps, size 2' 0" X 2' 0", 

 with bottom 1' 6" below centre line of drain pipe, with 4" cement 

 concrete bottom, 9" brick walling in cement mortar and finished inter- 

 nally in cement plaster, and 4" cement concrete top holed for, and fitted 

 with, single seal cast-iron covers and frames as described for inspection 

 chamber. 



Cleaning Eyes. — Where shown on plan, provide and fix easy bends 

 brought up to ground level and fitted with plug bedded in bitumen, and 

 above this set 15" by 15" by 14" slab of concrete with letters C. E. 

 incised. 



