school improvement scheme 2025-26

Earth work excavation for foundation in Hard stiff clay, stiff black cotton, hard red earth, shales murram, gravel,stoney earth and earth mixed with small size boulders SS.20B and Sand,silt or other loose soil, wet sand,or silt not under water, light black cotton soil, sandy loam ordinary soil and to full depth as may be directed except in hardrock requiring blasting inclusive of shoring shuttering, and baling out water wherever necessary refilling the sides of foundation with excavated soil other than sand in layers of 15cm thick well rammed and completed depositing the surplus excavated soil with in the compound in places shown by the departmental officers with intial lead and lifts and cleaning and levelling the site etc.,complete

Supplying and filling the basement with Good Earth filling in layers of not more than 15cm thick well rammed watered and compacted - etc., complete complying with standard specification.

Plain Cement concrete 1:4:8 (one cement, Four Crushed stone sand ,Eight aggregate) using 40mm gauge hand broken granite stone jelly for foundation including dewatering if found necessary and laid in layers of not more than 15cm thick and compacted,etc., complete complying with standard specfication.

Brick work in following Cement Mortar 1:5(one cement & five Crushed stone sand) using best quality of II Class Ground Moulded Chamber Burnt Brick of size 9" x 43/8" x 23/4"for foundation and basement including curing, etc., complete complying with standard specifiction– TNBP No:31

Below Ground Level

For Column

For Lintel & Slab

Reinforce Cement Concrete 1:1.5:3 (One part of Cement, one and half part of Crushed Sand (M- Sand), three coarse aggregates) using 20mm size ISS HBG metal including cost and conveyance of all materials to site and including for the mixing, laying and labour charges etc., complete as per standard specification

Suppling and fabricating and placing in position MS (or) R.T.S. bar for reinforcement to all RCC works as per the design given including cost of steel and binding wire also in all floors as per standard specification.