1. Slab Over Lap = 60D
2. Beam Over Lap = Compression Zone 24D, Tensile zone 50D
3. Column = 45D
📐 Standard Lap Length (As per IS 456:2000):
Type of Bar ☞ In Tension ☞ In Compression
Plain Bars ☞ 40 × diameter of bar ☞ 30 × diameter of bar
How to Read & Draw Contour Lines?
These 5 rules will help you,
Rule 1 - Every point of a contour line has the same elevation.
Rule 2 - contour lines separate uphill from downhill.
Rule 3 - contour lines do not touch or cross each other except at a cliff.
Concrete Cover in RCC Design
Concrete cover protects steel reinforcement from corrosion, fire, and ensures durability.
Follow IS 456:2000 for correct cover thickness based on member type and exposure condition.
Understanding Reinforcement Details in Concrete Beams 🧱⚙️
These drawings show how steel reinforcement is placed within concrete beams — including longitudinal bars, stirrups (ties), and sectional views (A-A and B-B).
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