Construction of New 350 cum Overhead Water tank at North Bengal Medical College and Hospital in the District of Darjeeling. Civil Work EE/NBD/SS/NIT/59/25-26

Earth work in excavation of foundation trenches or drains or septic tank soak well etc. in all sorts of soil (including mixed soil but excluding latarite or sand stone) including removing spreading or stack- ing the spoils within a lead of 75m. as directed. The item includes necessary trimming the sides of the trenches, leveling dressing and ramming the bottom, bailing or pumping out water etc. as required complete. (a) Depth of excavation not exceeding 1,500 mm.

(b) Beyond 1.5 mtr. upto 3.0 mtr. but not requiring shoring

Hire and labour charges for shoring work (including necessary close plank walling, framing, salbulla piling, strutting etc.) complete as per direction of the EIC for foundation excavation.(vertical surface area in contact with supported earth is to be measured.)This item should be executed on specific direction of the EIC. (a) Depth upto 1.5 m.

(b) For additional depth beyond 1.5 m. and upto 3.00 m

Earth work in filling in foundation trenches or plinth with good earth in layers not exceeding 15cm. Including watering and ramming etc. layer by layer complete. (Payment to be made on basis of measurement of finished quantity of work) (a) With earth obtained from excavation of foundation.

Single brick flat soling of picked jhama bricks including ramming & dressing bed to proper level & filling joints with powdered earth or local sand including cost of sand etc complete as per direction & specification.

Ordinary Cement concrete (mix 1:2:4) with graded stone chips (20 mm nominal size) excluding shuttering and reinforcement,if any, in ground floor as per relevant IS codes .Pakur variety

Controlled cement concrete with well graded stone chips (20 mm nominal size) excluding shuttering & reinforcement with complete design of concrete as per [ISI : 456 and relevant special publication. Submission of job mix formula after preliminary mix design after testing of concrete cube as per direction of the EIC. consumption of cement will not be less than 300kg of cement with super plasticiser per cum. of controlled conc. but actual consumption will be determined on the basis of preliminary test & job mix formuta. In ground floor and foundation.[Using concrete mixture] M 25 Grade (i ) Pakur variety For works in foundation, basement and upto roof of ground floor/upto 4 mtr (Column, Bracing)

4 m to 8 m

8 m to 12 m