Answer Posted / e m s i faruq

For column
When fc'=4000psi, Minimum lap length is 12 inch.
Or fy less or equal 60000 psi, lap length=0.0005*fy*db where
db is diameter of reinforcement in inch or mm.
When fy is greater than 60000 psi, lap = (0.0009fy-24)db
When fc' is less or equal 3000 psi, required lap will
multiply with 1.33333.

For Beam
In tension zone, Lap=60db, where db in mm.
In compression zone, Lap=44db, where db in mm.

For Slab
Lap=50db.

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