Steel (Saria) Calculator — Slab Reinforcement Weight & Cost
Steel is priced daily and bought by the ton or maund (40 kg), so a small spacing change moves your budget hard. This saria calculator computes bar count and weight from your slab dimensions, sutar size and spacing — the same tables contractors use.
Quick Answer
A residential RCC slab in Pakistan uses roughly 1 kg of steel per sq ft (about 1,300–1,400 kg for a 5 marla house). Enter your slab size, sutar size and spacing below for exact weight in kg and maund (40 kg) with cost.
Steel (Saria) Calculator
Pakistan standard saria (40 feet bar length). Weight varies by grade — Grade 60 is heavier than Grade 40.
How to Use the Steel (Saria) Calculator
- 1Enter slab length and width in feet, plus main-bar spacing (6″, 9″ or 12″ c/c).
- 2Choose your sutar size — 4 sutar (12 mm) is common for main bars in home slabs.
- 3Pick Grade 40 or Grade 60 per your structural drawings.
- 4Read total weight in kg and maund, then order from a trusted local supplier.
Frequently Asked Questions
How much steel is required per square foot of slab?
Pakistani residential slabs typically use about 0.9–1.1 kg of steel per sq ft of slab area (main + distribution bars). A 5 marla house slab of ~1,350 sq ft therefore needs roughly 1,200–1,500 kg of saria.
What is the weight of saria per foot?
Weight depends on sutar (diameter): 3 sutar ≈ 0.56 kg/ft, 4 sutar ≈ 0.89 kg/ft, 5 sutar ≈ 1.39 kg/ft, 6 sutar ≈ 2.0 kg/ft, 8 sutar ≈ 3.56 kg/ft. The formula is d²/52.5 kg per foot, where d is diameter in mm.
Grade 40 or Grade 60 steel — which is better?
Grade 60 has higher yield strength (60,000 psi vs 40,000 psi), so you can use slightly less steel for the same load — it is the standard choice for slabs and beams in new Pakistani construction. Grade 40 is still used for lighter works like lintels and ties.
How is steel measured and sold in Pakistan?
Steel sells by ton (1,000 kg) or maund (40 kg) at rates that change daily with mill pricing. Buy from a trusted local supplier, check the grade marking on the bars, and check each bundle's tag weight before unloading.
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