Civil Engineer must know these Topics

• Minimum thickness of slab is 125 mm
• Dimension tolerance for cubes + 2 mm.
• Free fall of concrete is allowed maximum to 1.50 m.
• Lap slices not be used for bar larger than 36 mm.
• Water absorption not more than 15 %.
• PH value of the water should not be less than 6.
• Compressive strength of Bricks is 3.5 N / mm2
• In steel reinforcement binding wire required is 8 kg per MT
• In soil filling as per IS code 100 sqm should take 3 sample for core cutting test
• Lapping is not allowed for the bars having diameters more than 36 mm
• Chair spacing maximum spacing is 1.00 m (or) 1 No per 1 Sq.m
• For dowels rod minimum of 12 mm diameter should be used.
• Chairs minimum of 12 mm diameter bars to be used.
• Longitudinal reinforcement not less than 0.8% and more than 6% of gross C/S.
• Minimum bars for square column is 4 No’s and 6 No’s for circular column.
• Main bars in the slabs shall not be less than 8 mm (HYSD) or 10 mm (Plain bars) and the distributors not less than 8 mm and not more than 1/8 of slab thickness.

• One Sqm = 10.763Sft
• One Cum=35.314 Cft
• One Acres=4046.873 Sqm=43560.17 Sft=4840.019Yards
• One Cubic meter = 1000 litere
• One Meter=3.280Feet
• One Mile =1609.344 meter
• One Acre = 100 cent
• One ground =2400 Sft=5.51 cent ½ ground =2.75 cent
• One Mile =8 Furlong One cement bag=1.25 Cft
• One Forma box =111.25 feet

CONCRETE COVER

. FOOTINGS : 50 mm

. RAFT FOUNDATION.TOP : 50 mm

RAFT FOUNDATION.BOTTOM/SIDES : 75 mm

STRAP BEAM : 50 mm

GRADE SLAB : 20 mm

COLUMN : 40 mm

SHEAR WALL : 25 mm

BEAMS : 25 mm

SLABS : 15 mm

FLAT SLAB : 20 mm

STAIRCASE : 15 mm

RET. WALL : 20/ 25 mm on earth

WATER RETAINING STRUCTURES : 20 / 30 mm