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I've been tasked with analyzing a conventionally-reinforced concrete cantilevered balcony at the corner of a high-rise condominium. The balcony, and others in the stack, had been supplemented with an HSS column at the outboard corner to remediate purported excessive deflection. The Owner now...

Hi, I am working working on the strengthening of a new opening in a 2-way RC slab slab. We had originally designed the strengthening using FRP, but the Contractor balked at the cost, cut the opening, shored the slab, and now we have to come up with a cheaper solution. We are looking into...

Hi, Does anyone have a good reference for determining required bond length for a steel strip bonded to concrete? Thanks!

Does anyone have a clear copy of the 1997 AISC Specification for the Design of Steel Hollow Structural Sections? I have a scanned copy from AISC that is unclear, specifically the equation for F_cr, Equation 4.2-2. In particular the lambda squared. It is unclear if it is lambda, lambda_c, or...

Hi, Does anyone have a reference for designing circular reinforced concrete planters? Thanks!

Hi, I am working through @slickdeals calculations posted here. Can anyone clarify the derivation of A1 and A2 on the first sheet? Thanks!

Hi, I am working on an interaction diagram for a circular, tied concrete column in accordance with CRSI's Design Guide for Reinforced Concrete Columns. For pure bending, CRSI states that there is no closed-form solution to determine the depth of the neutral axis and that a trial-and-error...

Hi, I'm working on adding an opening to an existing two-way RC slab. The opening is in a column strip and proximal enough to an existing concrete-filled steel tube column that the perimeter of the critical section for punching shear is reduced. Can anyone recommend a reference for steel shear...