Providing and Constructing Underground Drainage Line

Item No,1- Excavation for foundation / pipe trenches Ra in earth, soil of al types, sand, gravel and soft murun including removing the exXcavated material upto a distance of 50 M and lift upto 1.5 M, stacking and spreading as directed. Dewatering. showring and strutting, preparing the bed for the foundation efc. n complete.

Item No.2 :- Excavation for foundation / pipe trenches in hard murum including removing the excavated material upto a distance of 50 M with lift upto 1.5 M stacking as directed dewatering, showring, structing. preparing, the bed for the foundation and excluding back filling etc. complete..

Item No.3 :- Excavation for foundation / pipe trenches in soft rock / hard rock and old foundation and lime masonry foundation by controlled blasting / chiselling including trimming and leveling the bed by chisseling wherever required and removing the excavated material upto a distance of 50 M with lift upto 1.5 M stacking as directed dewatering, showring, structing, preparing the bed for the foundation and excluding m back filling etc. Complete.

Item No.4 :- Providing murum bedding in trenches with approved murum from excavated materials from fiundations / trenches in 15 to 20 cm layers including n watering and compaction, etc. complete.

Item No.5 :- Providing at site of work ISI standard RCC pipes in standard lengths of following class and diameter suitable for either collar joints or rubber ring joints, excluding GST levied by GOI & GOM in all respect, including inspection charges, transportto departmental stores / site, unloading and stacking, Note - One collar should be supplied with each full length plain ended RCC pipe, cost included in rates below. 450 mm dia.

Item No.6 :- Lowering, laying and jointing in proper grade and alinement RCC pipes with collar joints in CM 1:1 proportion or socketed RCC pipes with rubber joints (excluding cost of rubber ring or RCC collar), including cost of conveyance from stores to site of work, cost of jointing materials, labour, hydraulic testing, etc. complete as directed by Engineer-in- charge. 450 mm dia.

Item No.7 · Providing and constructing on sewer, B.B. masonry circuiar / Rectangular manhole with concentric cone 1.20 M dia. At bottom and 0.50 M dia. At top and upto a depth of 2.00 M with 23 cim thick brick work in CM 1:4 proportion, excluding excavation, including foundation concrete 250 mm thick and haunches and channels in C.C. 1:2:4 proportion, finishing channels in smooth rendering, providing C.I. dapuri type steps each weighing 5.50 kgs, 1:2:4 coping and providing and fixing approved make and quality S.F.R.C. frame and cover of 56 cm dia. etc. complete as directed by Engineer-in-charge. Circular - Depth upto 1.00 M

Depth upto 1.50 M

Depth upto 2.00 M