BASIC TIPS of CONSTRUCTION
THUMB RULE FOR CONSTRUCTION
HERE WE ARE SHARING SOME BASIC THUMB RULE AND TIPS WHICH CAN BE HELPFULL FOR PEOPLE THOSE ARE IN WORKING ,OR THINKING TO START CONSTRUCTION WORK
- Height of building = 3.15m.
- Height of Parapet Wall Should be =1M
- Height of Window =2.1m.
- Minimum thickness of slab =125MM
- Minimum thickness of lintel = 15cm.
- Thickness of DPC = 2.5cm.
BASICS OF STEEL BARS
1. Maximum diameter of the Bars used For lapping is 36mm.Bars having more Than this diameter are not allowed.
2. Minimum diameter of Bars used in Slab = 8mm.
3. Minimum number of bars used in SQUARE OR RECTANGULAR COLUMN = 4 BARS
4.Minimum number of bars used in circular column = 6 bars.
5.Maximum Chair Spacing =1M
6.Chairs minimum of 12 mm diameter bars to be used.
7.Minimum diameter used for Dowels Bars is =12MM
8.Longitudinal reinforcement should not be less than 0.8% AND NOT BE MORE
SOME IMPRTANT POINTS
- Binding Wire required in steel Reinforcement is 8kg per MT.
- Weight of 1 cement bag = 50kg.
- 1 BAG of cement = 25 cubic feet=0.0347 cubic meter.
- No. of Cement bags in 1m3 = 8 bags.
- Initial setting time of cement = 30 minutes.
- Final setting time of cement =10hrs = 600 MINUTES
- PH value of the water should not be less than 6.
- Riser of staircase = 150mm to 200MM
FIVE TECHNICAL BASICS
- Tensile or flexural strength of concrete =7fck.
- Modulus of elasticity of concrete = [ES=5000/FCK].
- Young’s modulus of steel =[ES =2*10^5N/mm2].
- F.O.S for steel =1.15.
- F.O.S for concrete = 1.5.
Standard size of Brick = 190mm*90mm*mm=19cm*9cm*9cm.
INTRESTING POINTS
- A good brick clay contains 20 to 30% of alumina,50 to 60% of Silica and the remaining constituents are lime, Magnesia, Sodium, Potassium
- Colour of good brick is deep red, cherry or copper colored.
- Compressive strength of brick is 5N/mm2.
- Maximum water absorption of first class brick is 15% of its dry weight.
- The excess of silica in the clay makes the brick brittle and weak.
- Process of manufacturing of bricks consists of preparation of brick clay,
Pingback: Essential Guide to Bar Bending Schedule for Columns & Beams