Record a hollow-section feasibility brief Define the inside space and its transitions separately from the outside tape dimensions. Required function What to record: Insert housing, collapsed double wall or flat strap, including service access Project detail: ____________________ How to confirm: State the function on the section drawing Section states What to record: Open cavity, flattened width, wall build and installed occupied section Project detail: ____________________ How to confirm: Provide dimensioned separate views Insert reference What to record: Material, cross-section, compressibility, ends and intended insertion stage Project detail: ____________________ How to confirm: Retain an identified insert Route restrictions What to record: Folds, seams, hardware, access opening and closure positions Project detail: ____________________ How to confirm: Overlay the full assembly path Assembly trial What to record: Insertion effort, wall movement, twist, local bulk and replacement access if required Project detail: ____________________ How to confirm: Build and operate the complete route Supply decision What to record: Approved section, production method feasibility, sample revision and unresolved requirements Project detail: ____________________ How to confirm: Supplier confirms the specific concept A concept drawing or flat tape approval does not confirm tubular production capability. Obtain a section-specific feasibility and sample decision before ordering. Sinicwebbing — https://www.sinicwebbing.com