Clarification of Building Structural Steel Design Type
Statement of Problem: At bid time GM provided LGR structural reference drawings for their press bay addition. These drawings employed a single-column design concept with a cantilevered bracket to support the crane girders. However, nothing in the RFPS stated that Pontiac had to use a single-column design or copy …
Field Checks not being completed
Project Phase: Installation Delivery Method: General Contract-Sub Customer and Prime field checks were not complete and / or not accurate.
GM Pontiac Cooling Tower System Design
STATEMENT OF PROBLEM Before the cooling tower system was turned over to the plant, an oily sheen was discovered in the basins by GM. CCC mitigated the issue with oil socks but it was brought up by the plant on why the filter was not running/filtering the oil. This was because the filter is not meant to filter oil…
GM Arlington Assembly Non-Conforming Work Poor Concrete Finish
STATEMENT OF PROBLEM Poor finish on exterior concrete. Exterior concrete batch error. There was clumping or balling of synthetic fibers on the interior slab. Post project review shows poor grading and compaction of sub-grade and excessive fibers protruding from the slab. COURSE OF ACTION Offered GM an e…
Cooling Tower Pump Room - Water Treatment Chemicals
Statement of Problem: The pump room design had insufficient containment for the two chemicals treating the cooling tower water. This led to a situation where if an accident were to happen and both drums were ruptured, the two incompatible chemicals could potentially mix and produce an adverse gaseous affect (chlo…
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 Substation W Equipment Floor Loading Issue
STATEMENT OF PROBLEM CCC received the substation equipment shop drawings from GM late in the project, at end of July. In August CCC worked with GM on the rigging plan for hoisting the new substation equipment into the penthouse. IBI performed a structural analysis of the penthouse framing steel and the hoist beam…
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…
GM Pontiac Incorporation of Scope From Bid-time Addendums and Q&A
STATEMENT OF PROBLEM Throughout the project there was a consistent issue where CCC/IBI failed to reference the bid-time addendum Q&A for final scope direction on design items which were not clear in the RFPS. The two major items which were not followed per the Q&A were: 1) OH door design in blank receiving fo…
Inefficiencies and lost time due to lack of bolt bin
Project Phase: Project Delivery Method: General Contract-Sub No mobile bolt bin created field inefficiencies and lost time.
