Coordination of Mechanical Equipment & Site Structural Support Pads
STATEMENT OF PROBLEM: A coordination meeting between structural/civil/mechanical was held for the outdoor air rotation units which sit on concrete pads. In the meeting JEG gave the required dimensions of the pad and stated the ARU & pad should be centered within the building column bay. The pads were then designed b…
Datum Points Not Correctly Coordinated
8575 GM Ultium 2 Battery Plant STATEMENT OF PROBLEM 1. Bass Datums were not coordinated correctly/accurately. In turn, system integration was challenging. 2. Avaco did not have the skilled help they needed on site. 3. The schedule was built to construct all of Pancake Line-3, and then, all of Pancake NnD Input …
Type of Bolted Connections (Channel vs Plates)
8555-02 GM Detroit Factory Zero STATEMENT OF PROBLEM Chassis Mod 1 all of the Mod sections were constructed of 8" channel. The Channels were "Toe Clipped" to an inverted "T" iron, as known the channel has a slanted surface. the supplier did not have the correct type of set-up for the Toe Clip Connection. The supp…
Scrap Steel Value
STATEMENT OF PROBLEM: CCC bid a project and provided an overall deduct from the base bid for the value of the scrap. The value of scrap was based on a quoted market value of approximately 450 USD per gross ton. As the project progressed, the market value of scrap steel dropped to approximately 200 USD a gross ton…
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…
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.
Lesson Learned Civil Design Coordination with Building 3D Design
Statement of Problem - The building was designed and coordinated in 3D, the civil site work was designed in 2D and not part of the 3D master model. This led to poor coordination between the building/site utility connection points, as well as some utilities and equipment pads which were coordinated incorrectly. …
GM Pontiac Mechanical Equipment Control Wiring Design
STATEMENT OF PROBLEM There were significant delays in obtaining control wiring drawings from the mechanical subcontractor for the cooling tower, the ARUs, and the substation W HV units. This led to several delays with the electrical installation of the unit controls as the electrical subcontractor could not do an…
GM Pontiac Column Coordination Log
STATEMENT OF PROBLEM Due to the amount of the utility drops at columns for this project being on the lighter side, a column coordination log was forgone and instead any and all column coordination was performed in regular 3D coordination meetings between CCC and its subcontractors. The primary reason for the colu…
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.
