CLEAR COVER TO MAIN REINFORCEMENT

CLEAR COVER TO MAIN REINFORCEMENT:

1.FOOTINGS : 50 mm
2.RAFT FOUNDATION.TOP : 50 mm
3.RAFT FOUNDATION.BOTTOM/SIDES : 75 mm
4.STRAP BEAM : 50 mm
5.GRADE SLAB: 20 mm
6.COLUMN : 40 mm
7.SHEAR WALL : 25 mm
8.BEAMS : 25 mm
9.SLABS : 15 mm
10.FLAT SLAB: 20 mm
11.STAIRCASE : 15 mm
12.RET. WALL : 20/ 25 mm on earth
13.WATER RETAINING STRUCTURES : 20/30 mm

Comments

Post a Comment

Popular posts from this blog

Calculation Of Quantity Of Cement, Sand And Brick In Wall

Image
Assuming 1- Grade of mortar = 1:6 (cement : sand) 2- Class A brick (19 cm x 9 cm x 9 cm) 3- Volume of brick work = 1.0 m^3, (wall size =1*1*1 =1.0 m^3) 4- Thickness of mortar = 10 mm Step 1 :- Calculation of bricks No. of bricks = (volume of brick work / volume of one brick with mortar) Volume of one brick (without mortar) = .19*.09*.09 = 0.001539 m^3 since thickness of mortar = 10 mm (0.01 m) Volume of brick with mortar = (0.19+0.01) x (0.09+0.1)x (0.09+0.1) = 0.2×0.1×0.1 = 0.002 m^3 Number of brick required in brick work volume = 1.0 m^3 therefore, No.of bricks = 1.0/ (0.002)  =  500 Nos. consider the percentage of waste  as 10 % or 15 % Total no. of bricks = 500 + (10 x 500 )/100=550 Step 2 :- Calculation for quantity of mortar Since we need 500 no of bricks volume occupied by bricks = No of bricks x volume of one brick Volume of bricks = 500 x 0.001539 = 0.7695 m^3 Volume of mortar = Volume of brick work – Volume of Bricks...
Read more

TENDERING, ESTIMATING AND QUANTITY SURVEYING – Tendering Methods & procedures

TENDERING, ESTIMATING AND QUANTITY SURVEYING – Tendering Methods & procedures: Tendering Methods & procedures: Methods of Contractor Selection: The selection of a contractor to carry out construction works in a project is a very important matter. A wrong choice may lead to an unhappy client / contractor relationship. It also may end up with dissatisfied client and sometimes even with an insolvent contractor. The client’s professional advisers should find a contracting company; That is financially stable / and has a good business record. For which the size of project is neither too small nor too large. That has a reputation for good quality workmanship and efficient organization. There are three principal methods for choosing a contractor: (a) open tendering, (b) selective tendering, (c) nomination. Open Tendering – Initiated by client’s architect/ quantity surveyor advertising in newspapers and/or inviting contractors to apply for tender documents and to tender...
Read more

Usefull Civil Engineering Calculation

Usefull Civil Engineering Calculation CONCRETEGRADE: M5 = 1:4:8 M10= 1:3:6 M15= 1:2:4 M20= 1:1.5:3 M25= 1:1:2 Weight of Engineering Materials 1.Bitumen – 1340 Kg / M3 2.Cement – 1440 Kg / M3 3.Gold – 19224 Kg / M3 4.Ice – 913 Kg / M3 5.Wrought Iron – 7700 Kg / M3 6.Pig Iron – 7200 Kg / M3 7.Cast Iron – 7650 Kg / M3 8.Lead – 11374 Kg / M3 A.C Sheets – 17 kg / M2 10.Petrol – 690 Kg / M3 CLEAR COVER TO MAIN REINFORCEMENT: 1.FOOTINGS : 50 mm 2.RAFT FOUNDATION.TOP : 50 mm 3.RAFT FOUNDATION.BOTTOM/SIDES : 75 mm 4.STRAP BEAM : 50 mm 5.GRADE SLAB: 20 mm 6.COLUMN : 40 mm 7.SHEAR WALL : 25 mm 8.BEAMS : 25 mm 9.SLABS : 15 mm 10.FLAT SLAB: 20 mm 11.STAIRCASE : 15 mm 12.RET. WALL : 20/ 25 mm on earth 13.WATER RETAINING STRUCTURES : 20/30 mm WEIGHT OF ROD PER METER LENGTH: DIA WEIGHT PER METER 6mm = 0.222Kg 8mm = 0.395 Kg 10mm = 0.616 Kg 12mm = 0.888 Kg 16mm = 1.578 Kg 20mm = 2.466 Kg 25mm = 3.853 Kg 32mm = 6.313 Kg 40mm = 9.865 Kg 1bag cement-50kg 1feet-...
Read more