B/R MAINT OF PBOR MD ACCN IN AKHNOOR MIL STN UNDER GE (S) AKHNOOR.

M&L for Sunken treatment as follows : (a) Demolition for cement concrete exc 15cm thickness but above ground floor as sunken floor , complete all as specified and as directed . “(b) All pipe passing through the wall of sunken floor shall be laid before the water proofing treatment is carried out and one number 50mm bore 500mm long medium grade 50mm GI pipe spout with SS wire gauge on inside mouth shall be provided. (c) Rendering of uneven surface with 10mm thick cement mortar 1:4 mixed with IWPC to make it even. (d) All junction of side wall where pipes are passing through shall be sealed with epoxy putty. (e) After cleaing apply three coat of polymer modified cementious water proof coating as per manufacturer instruction to bottom and vertical sides upto skirting height of the floors, proportion & applications as per manufacturer instruction. (f) The water proofed area shall be tested by filling water for at least 03 days. In case any leakage is noticed water proofing treatment shall be re-done and re-tested. (g) The sunken floor and sides of wall upto skirting height shall be plastered with 15mm thick cement mortar 1:4 mixed with IWPC @ 3% by weight including rounding at corner and junction sloping towards spout. (h) All pipes laid in sunken portion shall be covered with 50mm thick PCC 1:3:6 type C-0 all around.