Design Spreadsheet: Mat Foundation

Maya projected her screen. The MatFoundry spreadsheet looked like a cockpit dashboard. She loaded a new project: The Riverview Medical Center—a 30-story tower on soft clay.

The showed a hot spot at the north-east corner: 210 kPa. Exceeded capacity. Red flag. mat foundation design spreadsheet

Safety factor: 1.25. Code minimum was 1.1. "It won’t float," she said. "But recommend a dewatering system anyway." Maya projected her screen

She entered the soil data: bearing capacity 150 kPa, modulus of elasticity 25 MPa, Poisson’s ratio 0.35. Then she pasted 48 column loads from the structural model. The spreadsheet hummed for two seconds—then filled with numbers. The showed a hot spot at the north-east corner: 210 kPa

For the next three weeks, Maya became a ghost. She stopped going to site meetings. She stopped answering non-urgent emails. She built.

Then came the . She divided the mat into a 20x20 virtual grid. For each cell, the spreadsheet summed the moments and vertical loads to calculate the exact soil pressure at that point—no more averaging. If any corner exceeded the bearing capacity, the cell screamed yellow.