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Vu is reduced by the number of bearing points defined by the user. For instance, a Double T with two bearing points will reduce the Vu by 2 and results will be reported as the requirement per bearing point.
The shear span (defined as ‘a’ in PCI) assumes the load is located at the center of the nib.
The resistance factor is set internally to 0.75 and cannot be edited by the user.
The shear-friction coefficient, 𝜇, is set internally to 1.4 and cannot be edited by the user. Note that the software still computes the effective shear coefficient as defined in PCI 5.5.3.2.
All reinforcement covers are assumed to be 1 inch.
The bearing plate is assumed to be a ½ inch thick.
Only the following geometry types are supported: T beams, spandrels, inverted Ts, rectangular sections, and I Beams.
If the member is a thin webbed member, Vc is reduced with 2H of the support. When Vc is reduced, a new Vs required is computed.
References
PCI Design Handbook 8th Edition
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