| Sun Apr 13, 2014 | Post #1 | Abhishek Garg (Builder & Engineer)
Join date: Apr 2013 |  Post subject: Lap lengths of various MS steel bars
Dear Rasool: An overlap of about 50 times the diameter of the steel bat should be provided. This principle is referred to as 50D.
The Lap lengths of various diameters of steel bars is as follows: 8mm: Lap should be 400mm = 40cm = 16" approx. 12mm: Lap should be 600mm = 60cm = 24" approx. 16mm: Lap should be 800mm = 80cm = 31.5" approx. 20mm: Lap should be 1000mm = 100cm = 39.5" approx. 25mm: Lap should be 1250mm = 125cm = 49.5" approx.
Laps of neighboring steel bars should be staggered and not be provided at one level/line. At one cross section, a maximum of 50% bars should be lapped. I hope it helps. | | |
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| Mon Jun 08, 2015 | Post #2 | kavitha
Join date: Jun 2015 | Post subject: over lapping length in bars
Hi, Can i know on what basis the lap lengths you have shared..also can you tell me the code which is talking about the laps in steel bars. | | |
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| Tue Jun 09, 2015 | Post #3 | S L Gupta (Civil Engg)
Join date: Mar 2008 | Dear
See for over lap
Overlapping in Steel Bars in Reinforced Cement Concrete
There should be no joints in steel bars used for RCC work. If it is
necessary to use small length steel bars, proper overlap should be
given.
The joints of bars should be welded in case the diameter of
bars is more than 36 mm. Overlapping of bars should not touch each other
and they should be kept apart. Where it is not possible, overlapping
bars should be bound together at intervals not exceeding twice the
diameter of such bars with two strands of steel wires trusted tight. The
overlap should be staggered for different bars. The length of overlap
should not be less than 50 times the diameter of steel bar.
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| Tue Jun 16, 2015 | Post #4 | JAI PRAKASH
Join date: May 2014 | Superb Topic.
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Steel-Construction Questions (38) | |
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