A mat under the whole building from ETABS, on springs worked out from the SPT bore logs: the plate and the ground solved together, every combination, flexure with bar zones, punching, shear, bearing, settlement, the thickness, and DXF.
Demo building
12 columns, 1 walls · 7 grid lines · 2 strength · 2 service
| Opening | X₁, ft | Y₁, ft | X₂, ft | Y₂, ft |
|---|
| Zone | X₁, ft | Y₁, ft | X₂, ft | Y₂, ft | h, in |
|---|
A zone keeps its step from the mat while the thickness is searched.
| From, ft | To, ft | Cc | Cr | e0 | pc, ksf |
|---|
Over the depths given they replace the correlation for the clay's consolidation. Cr defaults to Cc/6; without pc the clay is taken as normally consolidated.
Element size 0: about 3/4 of the thickness. The springs' combination should be a sustained one (D + L), as the long term's consolidation is worked out under it.
Everything you have entered is in the address bar, so the link reproduces this exact calculation.
Outline, openings, zones, supports and boreholes; each face's extra bars on its own layer, with the meshes as notes.
| Support | Grid | X, ft | Y, ft | cx, in | cy, in | Wall | Max P, kip | Leave out |
|---|---|---|---|---|---|---|---|---|
| A1 | A-1 | 156 | ||||||
| B1 | B-1 | 268 | ||||||
| C1 | C-1 | 268 | ||||||
| D1 | D-1 | 156 | ||||||
| A2 | A-2 | 268 | ||||||
| B2 | B-2 | 412 | ||||||
| C2 | C-2 | 412 | ||||||
| D2 | D-2 | 268 | ||||||
| A3 | A-3 | 156 | ||||||
| B3 | B-3 | 268 | ||||||
| C3 | C-3 | 268 | ||||||
| D3 | D-3 | 156 | ||||||
| Core | 2 | yes | 648 |
Results are for preliminary sizing and educational use. They are not a design and must be reviewed, verified and sealed by a licensed or registered engineer before being used in construction.
mat-foundation v1.0.0 · ACI 318-08 · input 5f0b43d64df8ebd8