tender for construction of retaining wall at west side of ad colony in sayanapuram panchayat , earth work excavation in all class of soil with initial lead and lift as per ss 20 b for foundation , cement concrete 1:4:8 mix using 40mm metal including cost and conveyance and labour charges etc complete. , supply and erecting centering charges including cost and conveyance and labour charges etc complete. , cement concrete 1:3:6 mix using 40mm metal including cost and conveyance and labour charges etc complete. , gst amount for providing service to government contract works for the above construction & maintenance works. { gst amount is the total gst amount for overall quoted amount (both construction and maintenance) above this row in column bb for all works in this package} (refer clause 13.2 & 13.3 of section 2 of instruction to bidders (itb) of sbd)