In cement pressure grouting G.I pipes of diameter …… and ……length, should be fixed in drilled holes
a) 12 to 20 mm, 200 mm*
b) 12 to 20 mm, 300 mm
c) 12 to 25 mm, 500 mm
d) 20 to 25 mm, 300 mm
a) 12 to 20 mm, 200 mm*
b) 12 to 20 mm, 300 mm
c) 12 to 25 mm, 500 mm
d) 20 to 25 mm, 300 mm