GM Pontiac Process (Press) Design Drawings coordination with Facility drawings
STATEMENT OF PROBLEM There were several issues to where the 2D press drawings provided by Rotem did not show enough detailed information for proper coordination. These included: 1) the press cable trays in pit 2) The platforms and ladders between the presses. 3) D/B team not having a useable press 3D…
GM Pontiac Establishing an Elevation of Top of Floor - Impact on Process
STATEMENT OF PROBLEM During design, elevations were taken along the existing A-line floor and along the MPS building. These elevations were used to average a finish floor level for the building addition. In original design, two die cart rails ran N-S from the die wash booth to A1-line. However after the construct…
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 …
Press Process Design Coordination with Facility Design
Statement of Problem: There were several issues to where the 2D press drawings provided by Rotem did not show enough detailed information for proper coordination. These included: 1) the press cable trays in pit 2) The platforms and ladders between the presses. 3) D/B team not having a useable press 3D model. …
GM Pontiac Process Utility Holes Over Press Pit
STATEMENT OF PROBLEM Once the press pit steel design was complete, CCC provided the pit framing steel model / 2D drawings to GM to provide to Rotem for their use. Rotem placed approximately 45 openings through the rebar SOD, and provided the 2D process drawing to GM/CCC. This drawing underwent 10 revisions by Rot…
Unknown As-Built Conditions
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 c…
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 Stair Width Clearance Issue
STATEMENT OF PROBLEM The GM process team stated they wanted 36" wide clearance for all metal stairs in a design meeting. When IBI designed the stairs they made the tread 36" wide. However, the inner grab bars which project from the outer guardrail impede on that clearance (only 32" clearance). This was deemed a n…
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 …
Estimating and VDL Knowledge
Project Phase: Estimating Delivery Method: General Contract-Sub Estimating made the assumption that VDLs were shipped in and never ran off. CCC doubled hours due to this. Manual provided for installation was not used per VDL Expert.
