supply of 1 pcc hollow blocks 400 mm x 200 mm x 200 mm using cement concrete type 1:3:6 (16mm graded aggregate) hollow blocks shall be sound, free from cracks, broken edges, honey combing and other defects that would interfere with the proper placing of blocks or impair the strength or performance of construction. nos 8400 22596 21712 30272 29172 112152 2 pcc solid block 400x200x200mm (+/- 10mm) minimum strength 50kg/sqcm. pcc shall conform to relevant is. solid block made out of pcc 1:3:6 having the compressive strength 5 kn/sqmm. nos 4600 13800 12650 17250 17250 65608
