Engineering Structural Steel to Accommodate future rooftop loads
STATEMENT OF PROBLEM In design-build, the rooftop HVAC units and equipment are typically not final-sized at the time the structural steel framing is completed. Typically the engineer up-sizes the joists or trusses at the unit locations but sometimes they do not increase the size sufficiently to accommodate the fl…
Existing Building Steel Plumbness
STATEMENT OF PROBLEM: One of the main portions of work that we were tasked to complete was building a 120,000 square foot addition that directly tied into the existing plant. Unbeknownst to the project team at bid time, the existing building columns were out of plumb and leaning away from the addition. The first row …
Tie-in to Existing Building/Patching
STATEMENT OF PROBLEM: There were several penetrations in various locations that required cutting/coring, weatherproofing, patching, etc. that our subcontractors had excluded in their original estimates. The cutting and patching involved with these tie-ins not specifically shown on the drawings, and was not covered in…
