tender for maintenance of drainage at pound street in kamuthi town panchayat.; 1 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 2 plain cement concrete using1:4:8 mix ( one cement , four sand and eight 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 3 supplying and errecting centering to sides and soffits including supports and struttingfor drainage sides andculvert body wall sidesusing 90cm x 60cm and b.g 10stifenedwith welded mild steel angles of size 25mm x 25mm x 3mm for boardinglaid 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 4 c) plain cement concrete 1:3:6 mix (one part cement, three part sand and six part of aggrigate) using 20 mm size iss hbg metal from approved quarry including cost and conveyance of all materials to site. loading and unloading charges and labour char