Plan the work
Carry the estimate into the job plan.
The useful result is not just the number. It should support owners, programme assumptions and delivery readiness.
Workflow
Length
Steel & Fabrication
SHS Weight Calculator.
Estimate square hollow section weight using side size, wall thickness and length. Free online tool for UK construction and trade teams.
Connected calculator
Live estimate
Use the result as a planning estimate, then turn it into tasks, templates, evidence and delivery records.5Inputs
2Results
2Trade tags
Estimate In Product
Put the calculation beside the workflow it informs.
SHS Weight Calculator is a quick way to test the number. Zektrx gives that number a route into planning, materials, evidence and reporting once the work starts moving.
1
Plan the work
Length
2
Check materials
SHS weight
3
Report the decision
Fabrication Management
Check materials
Turn quantities into stock and purchase context.
Material estimates can connect to stock checks, reservations, purchasing notes and job-linked records.
Workflow
SHS weight
Report the decision
Keep assumptions visible after the calculation.
Saved outputs can support reports, handover packs, client review and repeatable estimating habits.
Workflow
Fabrication Management
mm
mm
mm
kg/m3
Instant Results
SHS weight
14.92kg
Estimated total SHS weight.
Weight per metre
14.92kg/m
Estimated linear weight.
Estimate To Evidence
Make the result useful beyond the screen.
A calculator result is most useful when it feeds the job plan, material checks and team briefing that follow the estimate.
Measure the work
Use the estimate as a planning input for scope, labour, equipment and site readiness.
Plan materials
Turn quantities into stock checks, purchasing notes and job-linked material records.
Brief delivery
Give teams the assumptions, limits and checks behind the number before work starts.
Explanation
What this calculates
The hollow void is removed from the outside square area before calculating linear steel weight.
Formula
Area = outside area - inside void area; weight = area x density x length
Inputs are validated on screen and converted where unit options are available.
Worked Example
Example result
A 6 m length of 100 x 100 x 5 mm SHS weighs about 89.49 kg.
Knowledge Journey
Learn, use, then automate.
1. Learn
GuideStock/materials
Construction materials tracking guide
A practical guide to tracking construction materials from supplier and purchase order through delivery, allocation, use and evidence.
GuideStock/materials
Contractor stock management checklist
A practical stock management checklist for contractors tracking materials, suppliers, purchase orders, job allocations and evidence.
GuideStock/materials
Job-linked materials evidence for contractors
How contractors can link materials evidence to jobs, including purchase orders, delivery notes, photos, stock records and completion packs.
2. Use
CalculatorSteel & Fabrication
RHS Weight Calculator
Estimate rectangular hollow section weight from outside dimensions, wall thickness and length. Free online tool for UK construction and trade teams.
CalculatorSteel & Fabrication
Angle Iron Weight Calculator
Estimate equal angle steel weight from leg size, thickness and length. Free online tool for UK construction and trade teams.
CalculatorSteel & Fabrication
CHS Weight Calculator
Estimate circular hollow section weight from diameter, wall thickness and length. Free online tool for UK construction and trade teams.
3. Automate
Featurefabrication
Fabrication Management Software
Connect fabrication jobs, materials, drawings, QA and site install evidence.
Featurestructural steel
Structural Steel Contractor Software
Manage structural steel RAMS, drawings, fabrication and install records.
Featurestructural steel
Structural Steel EN1090 Software
Organise structural steel evidence, quality records and EN1090-related workflows.
4. Start
Manage steel projects in Zektrx.
Connect RAMS, drawings, fabrication records, site evidence, materials and handover around one steel workflow.
Manage Steel ProjectsRelated Content
Connected calculators, templates and workflows.
Related Guides
Keep learning
GuideStock/materials
Construction materials tracking guide
A practical guide to tracking construction materials from supplier and purchase order through delivery, allocation, use and evidence.
GuideStock/materials
Contractor stock management checklist
A practical stock management checklist for contractors tracking materials, suppliers, purchase orders, job allocations and evidence.
GuideStock/materials
Job-linked materials evidence for contractors
How contractors can link materials evidence to jobs, including purchase orders, delivery notes, photos, stock records and completion packs.
Related Calculators
Run the numbers
CalculatorSteel & Fabrication
RHS Weight Calculator
Estimate rectangular hollow section weight from outside dimensions, wall thickness and length. Free online tool for UK construction and trade teams.
CalculatorSteel & Fabrication
Angle Iron Weight Calculator
Estimate equal angle steel weight from leg size, thickness and length. Free online tool for UK construction and trade teams.
CalculatorSteel & Fabrication
CHS Weight Calculator
Estimate circular hollow section weight from diameter, wall thickness and length. Free online tool for UK construction and trade teams.
Related Templates
Document the work
TemplateMethod Statements
Method Statement Template
Plan the safe sequence of work, people, plant, materials, controls and hold points. Free, editable construction template from Zektrx.
TemplateEquipment Checks
Equipment Pre-use Checklist
Check equipment condition, guards, inspections, certificates, defects and safe use controls. Free, editable construction template from Zektrx.
TemplateITPs
Inspection and Test Plan Template
Define hold points, witness points, acceptance criteria and evidence for quality control. Free, editable construction template from Zektrx.
Related Features
Automate the workflow
Featurefabrication
Fabrication Management Software
Connect fabrication jobs, materials, drawings, QA and site install evidence.
Featurestructural steel
Structural Steel Contractor Software
Manage structural steel RAMS, drawings, fabrication and install records.
Featurestructural steel
Structural Steel EN1090 Software
Organise structural steel evidence, quality records and EN1090-related workflows.
Related Industries
Trade workflows
Related FAQs
Should I round up material orders?
Yes. Allow for offcuts, cut lengths, fabrication waste and supplier stock lengths.
From RHS Weight Calculator
Is the result suitable for lifting plans?
Use it as an estimate only. Confirm actual weights before preparing lift plans.
From RHS Weight Calculator
Does this include root radius?
No. Use supplier section tables for final weights.
From Angle Iron Weight Calculator
Can I estimate unequal angle?
Use the material quantity result as a check only; this calculator assumes equal angle.
From Angle Iron Weight Calculator
FAQ
Calculator questions.
Does this include corner radii?
No. It is an estimating calculation. Manufacturer section tables should be used for final procurement.
Can I use this for RHS?
Use the RHS calculator when width and depth are different.
Next Step
Manage steel projects in Zektrx.
Connect RAMS, drawings, fabrication records, site evidence, materials and handover around one steel workflow.