TUTORIAL COLUMN

Choose Design Chart used for this question

• d2/ h = 0.20

• d2/ h = 0.15

• d2/ h = 0.10

• d2/ h = 0.05

value for equation 2

• 0.67

• 0.56

• 0.45

• 0.34

value for equation 3

• 0.14

• 0.34

• 0.74

• 0.54

value for equation 4

• 0.85

• 0.75

• 0.5

• 0.35

value As min

• 402.3 mm²

• 679.6 mm²

• 754.7 mm²

• 864.7 mm²

value As max

• 7200 mm²

• 6800 mm²

• 5600 mm²

• 4200 mm²

Determine the required area of main reinforcement, value As provided from table,

• Provide 6H10 , (As prov. = 471mm²)

• Provide 6H20 , (As prov. = 1886 mm²)

• Provide 8H25 , (As prov. = 3929 mm²)

• Provide 4H16, (As prov. = 805 mm²)