Design basis matrix for supplier review
The bars distinguish five intake lines. Their lengths indicate worksheet order. Project status is recorded separately against the actual buyer brief.
Line 1 — plan size, feet or metres
Line 2 — eave or internal clear height
Line 3 — named code edition
Line 4 — wind and snow, with units
Line 5 — crane or door reaction
A 40x60 foot note fills line 1 and leaves lines 3 to 5 empty. That is why a Cleary Building price per square foot is not issued from footprint alone.
How a reviewer can repeat the check
Test environment: the project country, the code edition written by the buyer or left blank, and the exposure the brief claims. Method: list actions with units, then write the combinations the named code requires. Data to record: design wind speed in m/s, ground snow load in kN/m², seismic basis in g or as a design category, clear span in metres, main-frame grade in MPa. Steps: (1) convert the bay to metres and state eave height, (2) reject transferred loads from a different country, (3) mark crane, door, and collateral lines as open if blank, (4) ask the supplier to state whether member design is in scope or requires a separate study, (5) list exclusions in the same note.
Anyone with the brief can repeat steps 1 to 5 without the shop. The output is a gap list. It is not a stamped calculation and not a pass under IBC or Eurocode 3. Stamping remains with the engineer of record.
| Path |
What must be named |
What this desk will not infer |
| ASCE 7 / IBC route |
Edition, risk category, wind speed, snow, seismic parameters the code asks for. |
A permit, or that IBC applies outside the authority that adopted it. |
| Eurocode route |
EN 1993 national annex, actions code, execution class if EN 1090 is in the contract. |
That a CE mark or a management certificate replaces the annex. |
| Code not named |
Country and the authority the buyer expects to file with. |
A default wind of 45 m/s, snow of 1.5 kN/m², or seismic of 0.30 g. |
Steel and panel scope, including the limits
Main frames on this worksheet are plate or hot-rolled portal members in Q355 or S355 when specified. Secondary members may be cold-formed purlins and girts. Light-gauge steel house framing is a different system and is not silently substituted into a hangar. Galvanized coating mass is reported as a class such as Z275 only for the members the purchase order galvanizes. Painted plate girders follow the specified surface preparation. Welded repairs on zinc-coated steel are a known weak line: the coating is gone at the weld until the repair is done.
Fire strategy is written as three lines. Core: EPS sandwich panel, PIR sandwich panel, or rock wool sandwich panel. Joint: the seam and the steel thermal bridge. Openings: doors and penetrations. A minute rating copied from a panel datasheet onto the whole wall is rejected. Intumescent coating, if the steel fire strategy uses it, is a dry-film and section-factor subject, not a paint colour.
Volumetric modules and panelised portal frames solve different problems. A volumetric unit carries more factory work and a tighter transport envelope. A portal warehouse is usually panelised steel: frames, purlins, and sheeting, with a higher site work share and a freer clear span. Cleary Building’s primary file is the panelised industrial frame. Treating a hangar as a stack of house modules because both are “modular” mixes two structural models.
