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2107.2.3 ACI 530/ASCE 5/TMS 402, Section 2.1.10.6.1.1, Lap Splices
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(Equation 21-2)
For SI: lld = 1.95d2bfyλ / K√f'm
where:
The minimum length of lap splices for reinforcing bars in tension or compression, lld, shall be calculated by Equation 21-2, but shall not be less than 15 inches (381 mm).
For SI: lld = 1.95d2bfyλ / K√f'm
where:
| db | = | Diameter of reinforcement, inches (mm). |
|---|---|---|
| ƒy | = | Specified yield stress of the reinforcement or the anchor bolt, psi (mPa). |
| ƒ'm | = | Specified compressive strength of masonry at age of 28 days, psi (mPa). |
| lld | = | Minimum lap splice length, inches (mm). |
| K | = | The lesser of the masonry cover, clear spacing between adjacent reinforcement or five times db, inches (mm). |
| γ | = | 1.0 for No. 3 through No. 5 reinforcing bars. 1.4 for No.6 and No.7 reinforcing bars. 1.5 for No.8 through No. 9 reinforcing bars. |
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