Drawings, Codes & Inspection
Shop drawings, erection drawings, tolerances, NDT methods, AWS D1.1, AISC standards, OSHA requirements, and site planning.
- Interpret shop drawings and erection drawings including piece marks
- Describe tolerances, leveling, and grouting procedures
- Identify weld inspection and NDT methods
- Explain AISC, AWS D1.1 code requirements and structural framing types
Lección 1
Shop Drawings & Erection Drawings
Shop Drawings
Shop drawings (detail drawings) are produced by the steel fabricator and show exact dimensions, connections, bolt patterns, and fabrication details for each individual steel member. They include:
- Piece marks - unique alphanumeric identifiers for each member (e.g., B12 for beam 12, C3 for column 3)
- Dimensions - exact lengths, hole locations, cope details, and connection geometry
- Material specifications - steel grade, bolt grade, weld type
- Bill of materials - itemized list of all steel, bolts, and connection materials
Shop Drawings
Created by: Steel fabricator
Shows: Individual member details
Used by: Fabrication shop
Purpose: Cut, drill, weld each piece
Erection Drawings
Created by: Steel detailer
Shows: Overall structure layout
Used by: Field ironworkers
Purpose: Locate and place each member
Erection Drawings
Erection drawings show the overall structure with grid lines, column locations, and piece marks for every member. Ironworkers use erection drawings in the field to identify where each piece goes. Erection drawings include:
- Plan views - looking down, showing column grid and beam layout
- Elevations - side views showing vertical member arrangement
- Section details - cross-sections through specific connections
Shop drawings show fabrication details for individual members. Erection drawings show the overall structure layout with piece marks for field placement. Both use piece marks as the link between drawings and physical steel.