provision of conservancy and security services for 01 year provision of conservancy service for 5500 sqft area and security services for 10 , 000 sq ft area for 01 year for defence estates office visakhapatnam circle , provision of conservancy services for 5500 sq ft area and security services for 10000 sqft area for period of 01 year to defence estates office , visakhapatnam circle , provision of conservancy services for 5500 sq ft area and security services for 10000 sqft area for period of 01 year to defence estates office , visakhapatnam circle . , brick work in c . m 1:5 mix using 2nd class ground moulded chamber burnt bricks with including cost and conveyance of all materials and including all labour charges etc complete , plastering in c . m 1:5-12 mm thick with including cost and conveyance of all materials and including all labour charges etc complete