Grid
Columns sit at every grid intersection — set the bay spacings below to move them
Columns
12
Slab panels
5
Longest span
3.50m
Column positions — bay spacings
Set each bay individually to put columns exactly where you want them (wall junctions, room corners). Blank or zero values fall back to equal bays. The spans should add up to the buildable dimension.
Along length (grids 1,2,3…) — sum 10.50 of 10.50 m
Along width (grids A,B,C…) — sum 6.00 of 6.00 m
Member sizes
IS 456 Cl. 23.2.1 span/depth · Cl. 26.5 detailing limits
Column sizes
corner
edge
interior
Typical interior column for 2 storeys: 230 × 450 mm. Minimum dimension 230 mm keeps the column inside a 230 mm wall.
Isolated footing sizes
corner footing
edge footing
interior footing
Switch this on to keep one pad size per column position instead of a different size at every grid reference.
metres · 0.014 m/px
— — orange dashed = buildable footprint after setbacks■ solid = column at a grid intersection, sized as designedhatched = bay not built on this storey — no slab, beam, column or loadX grid 1,2,3… · Y grid A,B,C…
Slab panels
IS 456 Cl. 24.4 — β = ly/lx ≤ 2 designs as two-way
| Panel | lx | ly | β | Action | Edges | Case | lx/d |
|---|---|---|---|---|---|---|---|
| A1-B2 | 3.00 | 3.50 | 1.17 | two-way | corner | 4 | 29 / 35 |
| A2-B3 | 3.00 | 3.50 | 1.17 | two-way | edgeY | 3 | 29 / 35 |
| A3-B4 | 3.00 | 3.50 | 1.17 | two-way | corner | 7 | 29 / 35 |
| B1-C2 | 3.00 | 3.50 | 1.17 | two-way | corner | 4 | 29 / 35 |
| B2-C3 | 3.00 | 3.50 | 1.17 | two-way | corner | 4 | 29 / 35 |