Steel Frame Design Estimating

Professional Construction Estimation Tool

Parameters Wall Frames Floor Joists Roof Trusses Additional Materials Delivery Services Summary Quote

Project Parameters

Company Information

Wall Frame Data Input

Parameter Value Unit Output (Cost)
Running Meters of Wall m
Stud Type: 64mm .75 STUD
Cost per meter: $
Total Linear Meters: 0m
Steel Weight: 0kg
Your Cost: $0.00
Customer Charge: $0.00
Calculation Formulas

Number of Studs: (Wall Length × 1000 ÷ Stud Centers) + (Wall Length ÷ 3)

Stud Length: Number of Studs × Wall Height

Plate Length: Wall Length × (2 + Additional Plates)

Total Linear Meters: (Stud Length + Plate Length) × Wastage Factor × 1.4 (40% extra for openings)

Total Weight: Total Linear Meters × Steel Weight per Meter

Total Cost: Total Linear Meters × Cost per Meter

Step-by-Step Calculation with Your Values

Enter values above to see detailed calculations
Wall Height m
Additional Top/Bottom Plates plates
Wastage Factor multiplier

Floor Joist Data Input

Parameter Value Unit Output (Cost)
Floor Area m²
Joist Type: 89mm .75 STUD
Cost per meter: $
Floor Area: 0m²
Steel Weight: 0kg
Your Cost: $0.00
Customer Charge: $0.00
Calculation Formulas:

Number of Joists: (Floor Area ÷ Span Length) × (1000 ÷ Joist Spacing)

Joist Linear Meters: Number of Joists × Span Length

Bearer Linear Meters: (Floor Area ÷ Span Length) × Bearer Factor

Total Linear Meters: (Joist Linear Meters + Bearer Linear Meters) × Wastage Factor

Total Weight: Total Linear Meters × Steel Weight per Meter

Total Cost: Total Linear Meters × Cost per Meter

Step-by-Step Calculation with Your Values

Enter values above to see detailed calculations
Joist Span Length m
Bearer/Header Factor multiplier
Wastage Factor multiplier

Skillion Roof Truss Data Input

SKILLION ROOF TRUSS SYSTEM

Parameter Value Unit Output (Cost)
Wall Length (for truss spacing) m
Suggested Trusses: 0 (Wall Length ÷ Truss Spacing + 2)
Truss Steel: 89mm .75 STUD
Batten Type: 40mm .55 ROOF BATTENS
Wall Length: 0m
Steel per Truss: 0 m
Total Batten Steel: 0
Number of Battens: 0
Total Weight: 0
Your Cost: $0.00
Customer Charge: $0.00
Calculation Formulas

Suggested Truss Count: Floor(Wall Length × 1000 ÷ Truss Spacing) + 2

Maximum Height: Min Height + (Bottom Chord × tan(Pitch in radians))

Top Chord Length: Bottom Chord ÷ cos(Pitch in radians)

Web Members: Calculated based on truss geometry and spacing

Steel Per Truss: Bottom Chord + Top Chord + Total Web Length

Wall Length: The length of wall where trusses will be installed

Number of Batten Runs: (Top Chord Length × 1000) ÷ Batten Spacing

Batten Linear Meters: Number of Batten Runs × Wall Length × Wastage

Number of Battens: Ceiling(Batten Linear Meters ÷ Batten Length) + 5 (extra battens)

Total Weight: Truss Steel × Steel Weight

Total Cost: (Truss Steel × Steel Cost) + (Number of Battens × Batten Cost)

Step-by-Step Calculation with Your Values

Enter values above to see detailed calculations

Step-by-Step Calculation with Your Values

Enter values above to see detailed calculations
Number of Trusses trusses
Room Width + Eaves (Bottom Chord) m
Roof Pitch degrees
Minimum Vertical Height m
Truss Spacing mm
Batten Spacing mm
Number of Web Members per Truss members
Wastage Factor multiplier

Total Summary

Total Number of Trusses: 0

Average Steel per Truss: 0 m

Total Wall Length: 0 m

Total Batten Steel: 0 m

Total Number of Battens: 0

Total Weight: 0 kg

Your Cost: $0.00

Customer Charge: $0.00

Web Members Calculation Explained

Web members are the diagonal supports inside each truss. Here's how they're calculated:

  1. Web Spacing: Fixed at 600mm (0.6m) intervals along the bottom chord
  2. For each web position:
    • Calculate the height at that position using linear interpolation between min and max heights
    • Height at position = Min Height + (Position ÷ Bottom Chord Length) × (Max Height - Min Height)
    • Calculate diagonal length using the Pythagorean theorem: √(Web Spacing² + Web Height²)
  3. Total Diagonal Length: Sum of all diagonal lengths for all web members
  4. Number of Web Members: Floor(Bottom Chord Length ÷ 0.6)

This calculation ensures proper structural support while optimizing material usage.

Truss Component Breakdown (Per Truss):
Bottom Chord Length: 0.00m
Top Chord Length: 0.00m
Web Members (total): 0.00m
Steel per Truss: 0.00m
Height at High End: 0.00m
Total Steel All Trusses: 0.00m
Component Totals Summary:
Total Bottom Chord (All Trusses): 0.00m
Total Top Chord (All Trusses): 0.00m
Total Web Members (All Trusses): 0.00m
Grand Total Steel: 0.00m

Additional Materials & Extras

Additional Materials Calculation Explained

This section allows you to add extra materials to your quote. The calculation is straightforward:

  • Total Cost: Quantity × Cost per Unit
  • For steel items measured in meters: Meters × Cost per Meter
  • For battens measured in 6m lengths: Number of Lengths × Cost per Length

The weight calculation for additional materials follows the same principle:

  • For steel items: Meters × Weight per Meter
  • For battens: Number of Lengths × Weight per Length

These additional materials are added to your total project cost and weight in the summary.

Steel Type Cost per Meter (or Each) Quantity Required Total Cost
TEC SCREWS - Box of 1000 (12g x 50mm) $0.00 $0.00
TEC SCREWS - Box of 1000 (12g x 65mm) $0.00 $0.00
TEC SCREWS - Box of 1000 (12g x 75mm) $0.00 $0.00
DYNABOLTS - Box of 50 (M12 x 100mm) $0.00 $0.00
RAMSET PINS - Box of 100 (3.7 x 27mm) $0.00 $0.00
GALVANISED BOLTS - Box of 50 (M12 x 150mm) $0.00 $0.00
WASHERS - Box of 100 (M12 Galvanised) $0.00 $0.00
NUTS - Box of 100 (M12 Galvanised) $0.00 $0.00
STEEL BRACKETS - Joist Hangers (Pack of 10) $0.00 $0.00
ANGLE BRACKETS - 90° Corner (Pack of 20) $0.00 $0.00
HOLD DOWN BRACKETS - Tie Down (Pack of 10) $0.00 $0.00
GALVANISED NAILS - 20kg Box (75mm Bullet Head) $0.00 $0.00
GALVANISED NAILS - 20kg Box (100mm Bullet Head) $0.00 $0.00
ADHESIVE SEALANT - Tube (Structural Grade) $0.00 $0.00
INSULATION TAPE - Roll (50mm x 20m) $0.00 $0.00
TOTAL ADDITIONAL MATERIALS $0.00

Delivery Calculation

Your Cost: $190 per hour | Charge to Customer: $200 per hour (depot to depot, including loading/unloading)

Delivery Calculation Explained

The delivery cost is calculated based on the following formulas:

  • Total Delivery Hours: Number of Loads × Estimated Travel Time Per Load
  • Your Delivery Cost: Total Delivery Hours × Your Cost Rate ($190/hour)
  • Customer Charge: Total Delivery Hours × Customer Charge Rate ($200/hour)

The number of loads is determined by:

  • The minimum number of loads required for the project type (automatically calculated)
  • OR the actual number of loads you specify (whichever is greater)

This calculation includes loading/unloading time and is measured depot to depot.

Parameter Value Output
Minimum Loads (Based on Project Type) 0
Total Delivery Hours: 0.00 hrs
Your Delivery Cost: $0.00
Customer Charge: $0.00
Actual Number of Loads
Cost Rate Per Hour $190.00
Customer Charge Rate Per Hour $200.00

Project Summary

Component Breakdown:

Weight Calculation Explained

The weight calculations in this estimator are based on the following formulas:

  • Wall Frames: Total Linear Meters × Steel Weight per Meter
  • Floor Joists: Total Linear Meters × Steel Weight per Meter
  • Roof Trusses: Truss Steel Linear Meters × Steel Weight per Meter
  • Battens (calculated separately): Number of Batten Lengths × Batten Weight per Length
  • Additional Materials: Quantity × Weight per Unit

The weight per meter for each steel type is defined in the material data and varies based on the steel profile and thickness. For example:

  • 64mm .55 STUD: 0.55kg/m
  • 89mm .75 STUD: 0.95kg/m
  • 150mm 1.15 STUD: 1.85kg/m

For battens, the weight is calculated per 6m length rather than per meter.

Cost Calculation Explained

The cost calculations in this estimator are based on the following formulas:

  • Wall Frames: Total Linear Meters × Steel Cost per Meter
  • Floor Joists: Total Linear Meters × Steel Cost per Meter
  • Roof Trusses: (Truss Steel Linear Meters × Steel Cost per Meter) + (Number of Batten Lengths × Batten Cost per Length)
  • Additional Materials: Quantity × Cost per Unit
  • Delivery: Number of Loads × Travel Time per Load × Cost Rate per Hour

The selling price is calculated using the profit margin formula:

  • Minimum Selling Price: Your Cost ÷ (1 - 0.25) = Your Cost × 1.33
  • Custom Selling Price: Your Cost ÷ (1 - Profit Margin/100)
  • Profit Amount: Selling Price - Your Cost
Component Your Cost Min Sale Price (25% Profit) Selling Price (Custom Profit) Profit (Custom Profit)
Wall Frames $0.00 $0.00 $0.00 $0.00
Floor Joists $0.00 $0.00 $0.00 $0.00
Roof Trusses $0.00 $0.00 $0.00 $0.00
Roof Battens $0.00 $0.00 $0.00 $0.00
Additional Materials $0.00 $0.00 $0.00 $0.00
Delivery $0.00 $0.00 $0.00 $0.00
TOTALS $0.00 $0.00 $0.00 $0.00

Professional Services

4.1 Standard Service Fees:

Service Your Cost Price Selling Price Include in Quote Total
Structural Certificate of Compliance $ $560.00 $0.00

Additional Design Services:

Service Your Cost Price Selling Price Include in Quote Total
Slab Design $ $630.00 $0.00
Soil Report Analysis $ $490.00 $0.00

4.2 Additional Service Fees:

Service Your Cost Price Selling Price Include in Quote Total
Geotechnical Services $ $1050.00 $0.00
Compaction Reports $ $490.00 $0.00
Piling Design/Reports $ $210.00 $0.00
Retaining Wall Design $ $910.00 $0.00

Services Summary

Total Cost Price: $0.00
Total Selling Price (Ex GST): $0.00
Total Profit: $0.00
GST (10%): $0.00
Total Services (Inc GST): $0.00

Note: All service fees are quoted per project and exclude GST unless otherwise stated. Services will be invoiced separately upon completion.

Professional Quote

From:
Your Company Name
Your Company Address
Your Phone
Your Email
To:
Customer Name
Delivery Address
Project No: N/A
Drawing No: N/A

Date:

Quote Valid Until:

Project Type:

Quote Items:

Item Description Quantity / Units Unit Price (Ex GST) Line Total (Ex GST)

Subtotal (Ex GST): $0.00

GST (10%): $0.00

Total (Inc GST): $0.00

Thank you for the opportunity to provide this quote. Please do not hesitate to contact us if you have any questions.