Fire Flow Studies

PE-stamped fire flow engineering for California. CFC Chapter 5, Title 24, DSA schools, and commercial projects. Proposals in 5 days from $2,000.

What Is a Fire Flow Study?

A fire flow study calculates the volume of water required to suppress a building fire while maintaining minimum hydrant pressure. It’s the foundation for ensuring a project’s water system can meet fire protection codes and insurance requirements.

We perform fire flow analysis for developers, municipalities, school districts, and commercial projects across California. Our work includes hydrant flow tests, system modeling, design recommendations, and PE-stamped reports ready to submit to fire marshals and building departments.

Fire Flow Requirements by Project Type

CFC Chapter 5 — Commercial and Residential

California Fire Code Chapter 5 requires fire flow calculations for most new buildings. The required flow depends on occupancy classification, building size, and construction type. For a 50,000-square-foot commercial building, typical fire flow requirements range from 2,000 to 3,500 GPM.

What we provide: Hydrant pressure surveys, fire flow modeling, system upgrade recommendations, and a PE-stamped report. Typical turnaround: 5 business days.

DSA School Fire Flow — Appendix BB and NFPA 24

California’s Division of the State Architect (DSA) and Title 24 Energy Code impose strict fire flow requirements for school projects. The base requirement for schools is 1,500 GPM at 20 PSI, though high-rise buildings and specific occupancies may require higher flows. We ensure your school project meets DSA standards and passes Authority Having Jurisdiction (AHJ) review.

Typical scope: Fire flow test, pressure validation, riser design, thrust block sizing, and DSA-compliant stamped drawings. Fixed fee: $3,500–$5,000 depending on complexity.

Title 24 Compliance and System Upgrades

Many projects don’t have enough existing fire flow. We analyze your water system, identify constraints, and provide design options: hydrant relocations, booster pumps, storage tank upgrades, or municipal main improvements. We coordinate with water utilities and recommend the most cost-effective solution.

The Fire Flow Process

1. Site assessment — We review the project location, building footprint, and water system.

2. Hydrant flow test — We measure actual flow and pressure at the nearest hydrants. Most sites: 1–2 hours on-site.

3. Analysis and modeling — We calculate required fire flow per code and model the system under demand.

4. Recommendations — System upgrades, riser design, depth/velocity/thrust block sizing per DSA standards.

5. Stamped report — PE-stamped fire flow analysis ready for permit submittal.

Turnaround: 5 business days from site test to stamped report. Same PE from scope through deliverable.

Why CaliChi?

• 9 State PE Licenses: Licensed in CA, OR, HI, WA, NV, UT, CO, AZ, TX. We can stamp your fire flow study wherever you’re building.
• 400+ Projects: Fire flow studies for schools, commercial buildings, multifamily, and industrial facilities across California.
• Fixed-Fee Pricing: From $2,000 for simple analysis to $5,000 for complex schools. No surprises.
• Same PE Throughout: Your engineer from initial scope through final stamped report. No handoffs.
• Fast Turnaround: 5-day proposals standard. We know time matters on your schedule.
• ENR Award Winner: Recognized for engineering excellence and client service.
• Key Projects: OUSD schools, BART transit, JPMorgan facilities, and Bay Area’s largest developers.

Service Areas

Primary: Bay Area (Oakland, San Francisco, Silicon Valley, East Bay)

Statewide: California-wide via field test coordination

Multi-State: Licensed in 9 states — we can help if you’re building in Oregon, Hawaii, Washington, Nevada, Utah, Colorado, Arizona, or Texas.

Frequently Asked Questions

Do I need a fire flow study for my project?

Most California buildings require a fire flow calculation. The exception is very small buildings (under 3,500 sq ft) with low hazard occupancy. When in doubt, ask your fire marshal or AHJ — they’ll tell you if it’s required.

How long does a fire flow study take?

Typically 5 business days from the time we conduct the hydrant test. Simple projects may be faster. Complex schools or system upgrades may take 7–10 days.

What if the existing water system doesn’t have enough fire flow?

We provide options. Often we can reroute pressure, relocate hydrants, or recommend a booster pump. For major deficiencies, we coordinate with the water utility on main upgrades. We help you find the most cost-effective path to compliance.

How much does a fire flow study cost?

Fixed-fee fire flow analysis starts at $2,000 for straightforward commercial projects. DSA school projects: $3,500–$5,000. Complex system upgrades: quote on scope. Our fee includes site test, analysis, recommendations, and stamped report.

Can you stamp fire flow studies in other states?

Yes. We’re licensed in CA, OR, HI, WA, NV, UT, CO, AZ, and TX. If you’re building outside these states, we can advise, but you’d need a local PE to stamp.

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