Question
Download Solution PDFकिसी काॅलम खंड में अनुदैर्ध्य बार का कुल क्षेत्रफल सकल काॅलम क्षेत्र के ___ से कम नहीं होना चाहिए।
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
As per IS 456: 2000, clause 26.5.3.1,
Longitudinal reinforcement in a column:
Percentage of steel:
- The cross-sectional area of longitudinal reinforcement shall be not less than 0.8 per cent nor more than 6 per cent of the gross cross-sectional area of the column.
Minimum diameter of longitudinal reinforcement bars:
- The main longitudinal reinforcement bars used in column shall not be less than 12 mm in diameter.
Minimum number of longitudinal bar:
The minimum number of the longitudinal bar provided in column shall be
- four in rectangular columns
- six in circular columns
Helical reinforcement:
- A reinforced concrete column having helical reinforcement shall have at least six-bar of longitudinal reinforcement within the helical reinforcement.
Spacing:
- The spacing of longitudinal bars measured along the periphery of the column shall not exceed 300 mm.
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