Standard conversion factor

• 1 Inch = 2 5.4 mm
• 1 Foot = 0.304 m
• 1 Yard =  0.914 m
• 1 Meter =  3.28 f t
• 1 mm = 0.394 inch
• 1 Mile =  1.609 km
• 1 Newton =  0.10 kg

Concrete clear cover for Reinforcement

• Raft Foundation Top should be = 50 mm
• Raft Foundation Bottom should be = 75 mm
• Raft Foundation Side should be = 75 mm
• Beam clear cover should be = 25 mm
• Strap Beam clear cover should be = 50 mm
• Column minimum clear cover should be = 40 mm
• Flat Slab should be = 20 mm
• Slab should be = 15 mm

Unite Weight Of Steel in Kg Per Meter For Different Diameter

• For 6 mm steel, the weight is 0.222 kg/m
• For 8 mm steel, the weight is 0.395 kg/m
• For 10 mm steel, the weight is 0.616 kg/m
• For 12 mm steel, the weight is 0.888 kg/m
• For 16 mm steel, the weight is 1.578 kg/m
• For 20 mm steel, the weight is 2.466 kg/m
• For 25 mm steel, the weight is 3.853 kg/m
• For 32 mm steel, the weight is 6.313 kg/m
• For 40 mm steel, the weight is 9.865 kg/m

Weight of engineering materials

• Bitumen = 1040kg/cu.m
• Cement = 1440kg/cu.m
• Brick = 1600kg/cu.m
• Sand:
  l- Dry = 1600kg/cu.m  2- River = 1840kg/cu.m
• Aggregate = 1750kg/cu.m
• Steel = 7850kg/cu.m

Concrete grade

• M 5 = 1 : 4 : 8
• M 10 = 1 : 3 : 6
• M 15 = 1 : 2 : 4
• M 20 = 1 : 1.5 : 3
• M 25 = 1 : 1 : 2
• M 30 = 1 : 0.75 : 1.5

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