CONCEPTUAL / SCREENING-LEVEL TOOL — NOT FOR CONSTRUCTION — LICENSED PE OF RECORD REQUIRED
GroundTruth.
The 10-minute pre-feasibility read, not the final design

SAP2000, ETABS, and PLAXIS are built for the sealed, certified answer — hours of model setup, real licensing cost, desktop-installed. GroundTruth is built for the moment before that: geometry and soil in, a transparent, formula-traceable foundation estimate out, in minutes, in a browser, free to try. Every formula shown, not hidden — and stated plainly where it stops and a licensed engineer's own judgment has to start.

The 10-minute read: geometry in, foundation system + BOQ + total cost out. No install, no license, nothing SAP2000/ETABS ask you to set up first.

Site & Building Parameters

SITE: Metro Manila, PH (West Valley Fault)SDS 1.05g · SD1 1.36g
GRADE20 STOREYS ABOVE GRADEMAT / RAFT 2 m132 PILES · Ø1.2 m · L=38 mEXC. DEPTH 10 m RAFT / RETAINING WALL PILE
Recommended foundation system

Bored friction / end-bearing piled raft, piles socketed into bedrock or dense stratum

Recommended earth retention system

Diaphragm (slurry) wall, nominal thickness 1.1 m.

Substructure concrete
10,213
m³
Substructure rebar
1634.1–2451.1
tons
Excavation depth
10
m
Piles
132
Ø1.2m × 38m

Bill of Quantities — Substructure (PHP)

ItemQtyUnitRateLowHigh
Bulk excavation12,000m³₱850₱10,200,000₱10,200,000
Retaining wall concrete1,540m³₱17,500₱26,950,000₱26,950,000
Raft + piles + basement slabs concrete8,673m³₱9,200₱79,791,254₱79,791,254
Seismic reinforcing steel1634.1–2451.1tons₱78,000₱127,457,770₱191,186,655
Substructure total₱244,399,024₱308,127,909
Total Project Cost — Estimated (substructure + superstructure, PHP)

₱436,423,024 – ₱567,543,909

Total structure concrete 21,013 m³ · rebar 2822.1–4503.1 tons. Excludes MEP, finishes, isolation bearings, mobilization, and contingency. Full breakdown in Advanced Mode → Cost Estimate (BOQ).