Interactive Mini Apps & Calculators Apps
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Rebar Weight
Steel Rebar Weight & Bars
Tube Steel Weight
RHS / SHS / Pipe Weight
Truss Calculator
Roof Truss & Structure
Brick Calculator
Bricks, Mortar & Cement
Painting Calculator
Paint Litres & Coverage
Tile Calculator
Floor & Wall Tiles
Ceiling Calculator
Gypsum & Suspended Ceiling
Concrete Calculator
Concrete Volume & Mix
Structural Size Checker
Estimate preliminary column sizes and beam depths for quick space planning
1. Building Parameters
Structural Analysis & Warnings
Span exceeds 8m. Consider deeper beams, post-tensioned slabs, or adding intermediate columns to limit deflection.
For buildings above 8 floors, columns should typically be at least 500x500 mm to support gravity loads and resist lateral wind loads safely.
Grid ratio X/Y or Y/X exceeds 2.0. This behaves as a one-way slab system, where beams in the short direction carry significantly more loads.
- Concrete Beam Depth: L / 12 - L / 15 (width is 1/2 to 2/3 of depth)
- Steel Beam Depth: L / 18 - L / 22
- Concrete Column Size: (Floors * 50) + 200 mm
- Steel Column Size: (Floors * 30) + 150 mm
Engineering Notice
This tool provides preliminary estimates only. Final structural design must be verified by a qualified and licensed structural engineer.