Slab Foundation Check • HousePlanLLC

Project

Solid rectangular foundation slab

Project

Location

Revision

Prepared by

Checked by

Approved by

Slab Geometry

Single solid slab; x = 0 and y = 0 are fixed

Label	x	y	Width X [m]	Length Y [m]

Slab Design Inputs

Thickness, soil, stability, concrete and reinforcement

Slab thickness H [m]

Soil bearing [kPa]

Friction μ

Passive resistance [kN]

Subgrade modulus ks [kN/m³]

Preliminary assumed value – replace with project-specific geotechnical value.

Sliding method

Concrete γ [kN/m³]

Soil / fill cover thickness [m]

Soil / fill γ [kN/m³]

Include cover

Concrete age

fck 1 day [MPa]

fck 30 day [MPa]

γc

Target O/T FS

fyd [MPa]

Punching loaded X [m]

Punching loaded Y [m]

Reinforcement type

Mesh type

Layers

Reinf. centroid depth from top [m]

Single layer = one physical reinforcement layer. The same As is checked for both bending signs without doubling: bottom-face tension uses d = centroid depth from top; top-face tension uses d = H − centroid depth from top.

Support Coordinate Mapping

Starts with one support. Loading SAP Excel/CSV automatically creates one row per unique joint. Enter or verify each support x/y coordinate before calculation.

Joint	x	y	Action

Reaction Input

Use SAP2000 Excel or paste manual reaction rows; load case selection is solved server-side

Reaction source

Import filter

Load case to check

No file selected

Manual reaction rows

Enter load case rows directly in editable boxes. Use one row per support/joint reaction. You can add multiple rows for the same load case.

Load case	Joint	F1	F2	F3	M1	M2	M3	Delete

For connected block, include every mapped joint for the load case. For isolated pad, include the selected joint rows.

Calculation Report

Each resistance check reports its own governing load case; load-independent detailing checks are marked N/A

Include detailed calculations in PDF

Server calculation result will appear here. The calculation engine runs on the backend.