Anchorage of longitudinal reinforcement: the design anchorage length lbd
Eurocode 2 part 1-1: Design of concrete structures 8.4.4 (1)
The design anchorage length is:
| lbd = α1 α2 α3 α4 α5 lb,rqd ≥ lb,min | (8.4) |
where:
- α1 α2 α3 α4 α5 are given in Table 8.2
- α1
- is for the effect of the form of the bars assuming adequate cover
- α2
- is for the effect of concrete minimum cover
- α3
- is for the effect of confinement by transverse reinforcement
- α4
- is for the influence of one or more welded transverse bars (Φt ≥ 0,6Φ) along the design anchorage length lbd
- α5
- is for the effect of the pressure transverse to the plane of splitting along the design anchorage length lbd
The product (α2 α3 α5) ≥ 0,7 (8.5) - lb,rqd
- is the basic required anchorage length
- lb,min
- is the minimum anchorage length, if no other limitation is applied:
• for anchorages in tension: lb,min ≥ max{0,3lb,rqd; 10Φ; 100 mm} (8.6) • for anchorages in compression: lb,min ≥ max{0,6lb,rqd; 10Φ; 100 mm} (8.7)
This application calculates the design anchorage length lbd from your inputs. Intermediate results will also be given.
First, change the following option if necessary:
