2025-06-20    121

(1) Understand Construction Processes: One must understand the construction process of the steel structure, specifically how materials are requisitioned, cut, and installed at each stage. This ensures all items are included in the quantity takeoff and helps identify areas with potentially higher material wastage.

(2) Know Construction Specifications & Standards: Familiarize yourself with steel structure construction specifications. For example: requirements for base plate shims (layout, specifications, quantity); non-destructive testing (NDT) requirements – H-beam butt welds require NDT; know the difference between the flange and web of an H-beam; Class I welds on flanges require 100% ultrasonic testing (UT), while Class II welds on webs require 20% UT.

(3) Master the Quota System: Understand the relevant quota standards for process metal structure fabrication and installation. Know which specific quota sub-item applies to each component quantity. This allows clear labeling of different sub-item quantities in the calculation worksheets for future reference.

(4) Study Quantity Calculation Rules: After reviewing the quota items, study the quantity calculation rules. Pay close attention within these rules to details pertinent to each sub-item, such