The design shear resistance, Qp, of the studs is calculated in the following way.
First, PRD is calculated based on the Eurocode methodology and is taken as the lesser of the following:
where
|
fu
| = | ultimate tensile strength of the stud as specified by the user in the Modeler (N/mm2) |
|
d
| = | stud diameter |
|
γv
| = | partial safety factor (1.25) |
and
where
| α | = | 0.2 (h / d + 1.0) ≤ 1.0 |
where
| h | = | stud height |
| β | = | 0.5 (g / 70.0 + 1.0) ≤ 1.0 |
where
| g | = | gap ≤ 30mm |
| ε | = | 0.5 ( φ / 20.0 + 1.0) ≤ 1.0 |
where
| ϕ | = | reinforcement diameter ≤ 8mm |
| ω | = | 0.5 (w / 600.0 + 1.0)≤ 1.5 |
where
| w | = | width of precast unit |
| fcp | = | average concrete strength fcu of the insitu and precast concrete |
| Ecp | = | average value of elastic modulus of the insitu and precast concrete |
Qp is then taken as the lesser of PRD and the capacity allowed per BS 5950.
Note: Only one row of studs is allowed.
