GM Pontiac Northeast Corner Grade Beam Issue
STATEMENT OF PROBLEM During design of the site, civil designed for an exterior grading elevation which was higher than the top of the grade beam elevation at the NE corner of the building. At this location there is a narrow gap between the building grade beam and the ring road (about 3''''). Originally a curb was no…
GM Pontiac Press Pier Anchor Bolt Cans
STATEMENT OF PROBLEM During the design process CCC was provided with a Rotem drawing with several sheets detailing the press foundation requirements. An enlarged elevation called for a "can" cast into the pier to allow for bolting the press anchor rod (hand hole). The drawing showed the can height at 300mm. Howev…
GM Pontiac Toilet Room Basin Sinks
STATEMENT OF PROBLEM Incorrectly sized basin-style sinks were installed in the mens and womens toilet rooms, which created a code violation where the egress minimum width of 36" was impeded in the mens toilet room entrance way. The architect sized and placed the basin-style sinks at mens and womens locker rooms but …
GM Pontiac Oily Wastewater Tank Design
STATEMENT OF PROBLEM For this project a new, welded steel oily wastewater tank was provided in the scrap tunnel in lieu of relocating an existing tank, at no cost to GM. The new tank shop drawings did not include for a manway. The shop drawings were submitted, reviewed, and approved by the EOR. The tank was fabri…
GM Pontiac Press Pit Lighting Fixtures
STATEMENT OF PROBLEM The lighting fixture designed for the press pit and tunnel lighting went through IBI and GM approval and the photometric calcs were discussed several times. However prior to installation, the electrical subcontractor realized that the fixture was not listed in GM OneSpec. Triangle notified CC…
GM Pontiac A-line Existing Foundations
STATEMENT OF PROBLEM At bid time CCC received the 1950 Albert Kahn facility record drawings of the plant. This set had two foundation drawings, showing two different column foundation types for the plant. One drawing showed all footings, one drawing showed all caissons. It was unknown by GM which was the as-built…
GM Pontiac Guardrails and Bollards Design
: STATEMENT OF PROBLEM Guardrails and bollards design varies for each plant based on what the plant has for existing standard and what management wants to use. Because of this, there was confusion between the team members on the type of guarding that should be used/installed. For interior guardrails protecting …
GM Pontiac Scope Definitions
STATEMENT OF PROBLEM For utilities at A-line there were descrepancies between the scope demolition/relocation photos and the final direction. When a scope item calls for a utility at a column to be "secured to column" that does not mean "relocate". COURSE OF ACTION N/A LESSON LEARNED May be be…
GM Pontiac Fire Alarm Design Review
STATEMENT OF PROBLEM The electrical subcontractor contracted Siemens to perform the fire alarm design. The drawings were submtited and reviewed by IBI and were also reviewed and approved by the city/fire department. However it was identified after the fact that the fire alarm drawings did not include smoke detect…
GM Pontiac Blank Receiving Roof Support Steel for HVU-1
STATEMENT OF PROBLEM During design of the building steel, 4 joists in the blank receiving bay were upsized to accommodate the weight of the blank receiving air handling unit (HVU-1; 17000#) in bay 22/23, based on JEG''''s input. Later in the design phase (50% MEP design), the mechanical engineer rotated and moved th…
