If Sb, is the average bond stress on a bar of diameter d subjected to maximum stress t, the length of the embedment $$l$$ is given by

1. $$l = \frac{{{\text{dt}}}}{{{{\text{S}}_{\text{b}}}}}$$
2. $$l = \frac{{{\text{dt}}}}{{2{{\text{S}}_{\text{b}}}}}$$
3. $$l = \frac{{{\text{dt}}}}{{3{{\text{S}}_{\text{b}}}}}$$
4. $$l = \frac{{{\text{dt}}}}{{4{{\text{S}}_{\text{b}}}}}$$

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