tender for extension of pipe , earthwork excavation in all soils and sub soils except hard rock requiring blasting with initial lead and lift including re-filling the sides of foundation in layer of 15 cm thick watering , ramming ,depositing the surplus earth in the premises as directed by departmental officers etc., complete asper standard specification. as per ss 20 b tndss no: 23&24vi (s2), vii 9,10 , plain cement concrete using 1:4:8 mix ( one part of cement , four part of crushed stone dust and eight part of aggregates) using 40 mm iss hbg metal including cost and conveyance of all materials to work site and all labour charges for mixing, laying,consolidating and curing etc complete as per the standard specifications. tndss no: 28 v, vi (s2) v,vi (s5a) vii , supplying and errecting centering to sides and soffits including supports and strutting for drainage sides and culvert body wall sides using 90cm x 60cm and b.g 10stifened with welded mild steel angles of size 25mm x 25mm x 3mm for boarding laid over( silver oak joists ) of size 10cm x 6.50cm spread at about 90cm including all labour charges and cost and conveyance of all materials to site etc. complete complying with standard specification. tndss no: 30&86 , plain cement concrete 1:2:4 mix (one part cement, two part crushed stone dust and four part of aggrigate) using 20mm size iss hbg metal machine crushed from approved quarry including cost and conveyance of all materials to site, loading and unloading charges and labour charges for mixing, laying and curing etc., complete as per tndss no: 28 & vi (s2) vi (s5a) vii , providing and laying, spreading and compacting graded stone aggregates to wet mix macadam 250mm thick specification including premixing the materials with water at omc in mechnanical mix plant carriage of mixed material by tipper to site laying in uniform layers with pavers in sub base/ base course on well prepared surface and compacting with vibratory roller to acheive the desired density i