Current Revision posted to RAM | STAAD Wiki by Karl G on 10/19/2016 7:18:50 PM
| Product(s): | RAM Concrete Shear Wall | ||
| First Affected Version: | |||
| Found in Version: | 15.00.00.00 | ||
| Fixed in Version | N/A | ||
| Environment: | N/A | ||
| Area: | Design | ||
| Subarea: | N/A | ||
| Defect Number: | 355889 |
Problem Description
When calculating shear capacity of coupling beams, the program uses an effective depth of 0.8 x the beam height. The effective depth should be calculated using a strain compatibility analysis and represent the distance from the extreme tension fiber to the centroid of the tension reinforcement.
Reason
The use of 0.8xbeam depth follows from ACI 318-11 11.9.4. This is appropriate for walls but may not be appropriate for coupling beams.
Solution
In a future release, the effective depth will be calculated as the distance to the centroid of the tension reinforcement.
Tags: design, Coupling Beam, RAM Structural System, ACI 318, known issue, defect, Ram Concrete, Shear Wall