Fire & Finish — AESS Category Cost Factor
AESS Category Cost Factor for steel fire protection and finishing.
AESS categories are the price of visibility: category 2 means ground welds and filled weld access holes; category 4 means museum-finish steel costing near triple standard fab. The category call belongs in design review — chosen by an architect, paid by whoever didn't read the spec.
Formula
Note: Erection-planning estimate only. Member weights, connection capacities and tolerances for execution must come from the issued drawings, the EOR and the erection engineer — never from a generic calculator.
Disclaimer: This tool is for general informational and estimation purposes only and is not professional financial, tax, accounting or legal advice. All figures are estimates — verify with a qualified professional before making decisions. Read the full disclaimer.
AESS Category Cost Factor for steel fire protection and finishing. A free structural steel delivery & erection tool — no sign-up, no upload, instant results in your browser.
About Fire & Finish — AESS Category Cost Factor
Fire & Finish — AESS Category Cost Factor computes the governing relationship cost = t × base × category multiplier (≈1.2/1.45/1.9/2.8) live as you type. AESS categories are the price of visibility: category 2 means ground welds and filled weld access holes; category 4 means museum-finish steel costing near triple standard fab. The category call belongs in design review — chosen by an architect, paid by whoever didn't read the spec. Defaults are pre-filled with realistic values for this exact scenario, and the worked example substitutes your numbers step by step so the math is never a black box.
How to use Fire & Finish — AESS Category Cost Factor
- 1Enter your values — AESS tonnage, AESS category (1–4), Standard fab cost (sensible defaults are pre-filled).
- 2Read the live results: AESS fabrication cost.
- 3Check the "with your numbers" line to see cost = t × base × category multiplier (≈1.2/1.45/1.9/2.8) substituted step by step.
- 4Adjust inputs until the scenario matches yours, then copy or share the result.
Why use Fire & Finish — AESS Category Cost Factor?
- ✓Instant, free and private — every calculation runs client-side in your browser; nothing is uploaded
- ✓Built on the stated formula cost = t × base × category multiplier (≈1.2/1.45/1.9/2.8) with authoritative sources cited on the page (AISC 303 — Code of Standard Practice for Steel Buildings; ASTM A780 / UL fire-resistance directory)
- ✓AESS categories are the price of visibility: category 2 means ground welds and filled weld access holes; category 4 means museum-finish steel costing near triple standard fab.
- ✓Niche-specific defaults give a meaningful worked answer the moment the page loads
Frequently asked questions
What formula does the fire & finish — aess category cost factor use?+
It evaluates cost = t × base × category multiplier (≈1.2/1.45/1.9/2.8), exactly as published. Sources: AISC 303 — Code of Standard Practice for Steel Buildings; ASTM A780 / UL fire-resistance directory. The substituted worked example on the page lets you verify every step against the textbook.
How should I read the result — and how far can I trust it?+
AESS categories are the price of visibility: category 2 means ground welds and filled weld access holes; category 4 means museum-finish steel costing near triple standard fab. Erection-planning estimate only. Member weights, connection capacities and tolerances for execution must come from the issued drawings, the EOR and the erection engineer — never from a generic calculator.
When is this calculator the right tool for the job?+
AESS Category Cost Factor for steel fire protection and finishing. A free structural steel delivery & erection tool. The category call belongs in design review — chosen by an architect, paid by whoever didn't read the spec. For neighbouring scenarios, the related tools below cover the same engine with different presets.
Do I need to install anything or create an account?+
No. The tool is pure client-side JavaScript: open the page and it works, offline once loaded, with no account, no quota and no data leaving your device.
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