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Calcimator

Structural Steel Cost Calculator

Estimate total installed structural steel cost including material, fabrication, erection, connections, and miscellaneous metals.

Inputs

tons
$
$
$
%

Results

Total Installed Cost

$236,500.00

≈ 6 Teslas

Material Cost$90,000.00
Fabrication Cost$40,000.00
Erection Cost$30,000.00
Connection Cost$55,000.00
Misc Metals Cost$21,500.00
Cost per Pound$2.37
How to Use This Calculator
  1. Enter the total steel tonnage from your structural takeoff (use the Steel Takeoff Calculator if needed).
  2. Set current steel price per ton, fabrication cost per ton, and erection cost per ton for your region.
  3. Enter the number of structural connections — each is priced at a flat rate (~$275 average).
  4. Set the misc metals percentage add-on (typically 8–15% for handrails, embeds, and lintels).
  5. Review Material, Fabrication, Erection, and Connection costs individually for scope verification.
  6. Total Installed Cost and Cost per Pound are the primary outputs for bidding and owner's budget reports.

How the result changes with Total Steel Weight

Total Steel WeightTotal Installed Cost
10,001$35,264,020.00
35,001$123,264,020.00
65,000$228,860,500.00
90,000$316,860,500.00

What each input means

Total Steel Weight
Total structural steel tonnage for the project.
Steel Price per Ton
Current market price for structural steel per ton.
Fabrication Cost per Ton
Shop fabrication cost including cutting, welding, and detailing.
Erection Cost per Ton
Field erection cost including crane, bolting, and plumbing.
Number of Connections
Total number of structural connections (shear tabs, moment, bracing).
Misc Metals Percentage
Percentage add-on for miscellaneous metals (handrails, embeds, lintels).

What each result means

Material Cost
Raw steel material cost.
Fabrication Cost
Shop fabrication cost.
Erection Cost
Field erection cost.
Connection Cost
Estimated cost for all connections at $275 average each.
Misc Metals Cost
Miscellaneous metals add-on cost.
Total Installed Cost
Complete installed structural steel cost.
Cost per Pound
Total installed cost divided by total weight in pounds.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Total Steel Weight = 50, Steel Price per Ton = 1800, Fabrication Cost per Ton = 800, Erection Cost per Ton = 600 = 6 input(s) provided
  2. Calculate Total Installed Cost
    Total Installed Cost = subtotal + miscMetalsCost
    236500 = $236,500
  3. Calculate Material Cost
    Material Cost = steelWeight * steelPrice
    90000 = $90,000
  4. Calculate Fabrication Cost
    Fabrication Cost = steelWeight * fabCost
    40000 = $40,000

Engine last updated . Checked against 3 independently-derived tests — how we verify calculators.

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