Shoring Calculator
Calculate shoring and propping requirements for slabs. Determine prop spacing, load capacity checks, and backpropping needs.
Enter excavation details to design shoring system
IMPORTANT DISCLAIMER
This calculator provides PRELIMINARY ESTIMATES ONLY and is intended for planning and budgeting purposes. Results should NOT be used for final structural design or construction without verification by a licensed Professional Engineer (PE) or Chartered Engineer (CEng).
By using this tool, you acknowledge that:
1. All calculations are indicative and may not account for site-specific conditions, load combinations, or local code requirements.
About This Calculator
The Shoring Calculator helps site engineers and temporary works designers determine propping requirements for concrete slabs during construction. Calculate prop spacing, load distribution, and backpropping requirements for multi-story buildings across UAE and Gulf projects, ensuring structural safety during concrete curing and striking operations.
When to Use This Calculator
- Designing temporary propping for post-tensioned slabs
- Planning backpropping for fast-track construction
- Calculating reshoring requirements during stripping
- Determining prop capacities for heavy equipment loads
- Verifying formwork supplier propping layouts
How to Use This Calculator
Enter Slab Details
Input slab thickness, span, and concrete self-weight.
Define Loading Conditions
Specify construction loads, material storage, and equipment weights.
Select Prop System
Choose steel props, aluminum shores, or table forms with capacities.
Set Safety Factors
Apply load factors per BS 5975 or project requirements.
Calculate Layout
Get prop spacing, quantities, and backpropping schedule.
Typical Scenarios in UAE & Gulf Projects
Contractor designs propping for 280mm PT slab with 10m spans. Calculator determines 1.5m prop spacing with 20 kN capacity shores, plus 2-level backpropping to achieve 7-day striking cycle matching PT stressing schedule.
Site team plans 5-day floor cycle for 40-story tower. Tool calculates minimum 3-level backpropping with steel props at 1.2m c/c, reducing to 2 levels once slabs reach 70% design strength per cube testing.
Frequently Asked Questions
Take Your Calculations Further
This calculator reflects the logic built into Arkan's construction management platform.
Last Updated: January 2026
Standards Reference: BS 5975 Falsework Code of Practice, ACI 347 Formwork for Concrete