478 



TransacHons . 



Resistances mth this device, in soils similar to those of the previous 

 tests (Table VII), are given in Table VIII. Values are of individual pipes, 

 and are obtained by the A.C. bridge method. 





■ I 



^ 



-3a Kifcrs . 



/ " Golv. /ran S/hip 





-t4\3-o' 



driit^ HtrO' bofft si</rt 



/ 



Lj 



/J 



Fig. 7. 

 Table VIII.— Public Works Department Earths about Christchurch. 



Locality. 



Substation, Addington 

 Christchurch Brick Company . . 



Corner Lincohi Road and Barring- 

 ton Street 

 Lincohi Road 

 Colombo Street 



Allen's 'kill .. 

 Sunnyside transformer 

 Lincoln Road 

 Barrington Street 



Remarks. 



1 in. pipe, 10 ft., unsalt6d ; peaty to sand. 

 1 in. pipe, 8 ft., uns^lted ; marshy loam. 

 1 in. pipe, 8ft., salted; marshy loam. 

 1 in. pipe, 12 ft., salted ; loam to peat. 



IJ in. pipe, 12 ft., salted ; loam to peat. 

 1 in. pipe, 12 ft., unsalted ; loam to clay. 

 1 in. pipe, 10ft., unsalted; loam to clay. 

 1 in. pipe, 10 ft., unsalted ; loam to clay. 

 1 in., unsalted ; loam to clay. 

 1 in. pipe, 10ft., unsalted; loam to claj-. 

 1 in. pipe, 7 ft., unsalted ; loam to gravel. 

 1 in. pipe, 7 ft., salted ; loam to gravel. 



