Rebar Spacing Calculator
Calculate rebar spacing, quantity, and placement for concrete slabs, footings, and walls. Plan your reinforcement layout for optimal structural integrity and code compliance.
Step 1: Slab Specifications
20 cm
Standard Rebar Spacing Guidelines
Slabs: 20-30cm spacing. Walls: 15-25cm spacing. Footings: 15-20cm spacing. Minimum concrete cover: 5cm for slabs, 4cm for walls.
Step 2: Rebar Specifications
5 cm
Optimal Rebar Placement
Main reinforcement should be placed in the tension zone. Use minimum 2 layers for slabs thicker than 15cm. Lap splices should be 40-50 times bar diameter.
Rebar Calculation Results
Summary
Layout Visualization
Rebar Comparison
Total Rebar Required
268 m
#16 rebar at 20cm spacing
Rebar Quantity
110 bars
Total Weight
423 kg
Rebar Per m²
4.58 kg/m²
Concrete Volume
3.6 m³
Rebar Layout Visualization
Horizontal Bars
30
Vertical Bars
20
Lap Splices Needed
12
Steel Percentage
0.57%
Rebar Size Comparison
| Rebar Size | Diameter | Weight per meter | Tensile Strength | Typical Use |
|---|
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