01 · Electrical
26 05 48
Electrical Contractors
Switchgear, switchboards, transformers, UPS and battery systems, PDUs, busway, cable tray, and conduit racks, delivered as one package for the submittal.
Electrical and mechanical scope
Data Centers · Mission-Critical · ASCE 7-22 Ch. 13
Seismic Anchorage and Delegated Design
for Data Center Equipment.
PE-stamped anchorage and bracing calculations for switchgear, UPS and battery systems, generators, busway, cable tray, cooling equipment, and prefabricated skids. Prepared for the contractor holding the Division 26 or 23 seismic section, to the 2025 California Building Code and ASCE 7-22 Chapter 13.
Delegated Design · ASCE 7-22 Ch. 13
Illustrative
Who It Is For
Built for the contractor holding the delegated design.
Seismic control sections such as 26 05 48 and 23 05 48 assign anchorage and bracing design to the trade contractor, sealed by a registered professional engineer. That is the engagement we are set up for.
02 · Mechanical
23 05 48
Mechanical Contractors
Cooling units, coolant distribution units, chillers, pumps, piping supports, and rooftop equipment on curbs or dunnage frames.
Electrical and mechanical scope03 · Packaged Equipment
Per Project
Skid and Enclosure Builders
Project-specific anchorage of power skids, modular electrical enclosures, and packaged cooling skids to their pads.
Skid and equipment scope04 · Review
Owner · GC · EOR
Third-Party Submittal Review
Independent review of delegated seismic submittals prepared by others, against the project criteria and ASCE 7-22 Chapter 13.
Where We Fit
The work free bracing design leaves open.
Bracing and anchor manufacturers provide layouts and calculations for their own hardware. They generally do not take responsibility for the structure the bracing attaches to, or for anchoring floor-mounted equipment.
Equipment to Slab and Pad
Switchgear, UPS, battery racks, transformers, and generators anchored to slabs and housekeeping pads, with anchors designed to ACI 318-19 Chapter 17 using ICC-ES evaluated products.
Attachment to Structure
Checks of the slab, deck, or steel framing that hangers, braces, and equipment supports attach to, so the load path is closed, not assumed.
Frames and Supports
Strut frames, equipment stands, platforms, and dunnage designed as equipment supports under ASCE 7-22 Chapter 13.
Mixed Vendors, One Package
One calculation package across several vendors’ equipment, plus responses to engineer-of-record comments and resubmittals.
Code Basis
Current code, stated on page one.
Every package states its design basis up front so the reviewer does not have to reconstruct it.
2025 CBC and ASCE 7-22
Component forces per ASCE 7-22 Chapter 13, including the height amplification, structure ductility, component resonance, and component strength factors introduced in that edition.
Risk Category and Ip
Code minimum or owner criteria, whichever governs the project. The basis is written into the calculations, not left to interpretation.
Anchors
ACI 318-19 Chapter 17 anchor design with ICC-ES evaluated anchors, with embedment, edge distance, spacing, and installation notes on the details.
Manufacturer Certification
Active equipment that must stay operable relies on the manufacturer’s AC156 or experience-data certificate. We design the anchorage to match it.
Process
Equipment schedule to stamped submittal.
The request that moves fastest includes the equipment schedule, cut sheets, the spec section, and the structural drawings.
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01
Send the Package Information
Equipment schedule, manufacturer cut sheets with mounting details, the seismic specification section, structural drawings, and any manufacturer seismic certificates.
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02
Written Scope and Fee
A fixed scope listing each engineered item, the design basis, what is excluded, and the fee. No hourly billing on the base scope.
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03
Calculations and Details
Component demands, anchor design, brace and support design where in scope, anchorage details, and an anchor schedule, assembled as a PE-stamped, submittal-ready PDF.
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04
Comments and Field Questions
Responses to engineer-of-record and reviewer comments, resubmittals, and field questions during installation.
Who Does the Work
One licensed engineer, scope to stamp.
Calculations are prepared and stamped by Hamed Hasani, PhD, PE, a California-licensed civil engineer. He previously worked as a research and development engineer at Simpson Strong-Tie, and his doctoral research was in the seismic behavior of structures.
He also brings field experience from public infrastructure construction, which shapes how details are drawn: anchors that can be installed with the rebar and conduit actually in the pad, brace points that exist in the field, and details an inspector can verify.
FAQ
Common questions.
What Risk Category and importance factor do you design to?
Under the California Building Code most data centers are Risk Category II at code minimum. Many owners specify Risk Category IV, or a component importance factor Ip = 1.5 for equipment that must stay in service. We design to the governing project criteria and state the basis on the first page of the calculations, so the engineer of record and the plan reviewer see it immediately.
Can you certify equipment by calculation?
Not for active equipment that must remain operable after an earthquake. ASCE 7 requires that certification to come from the manufacturer, by shake-table testing (ICC-ES AC156) or experience data. We design the anchorage, supports, and attachments, and coordinate them with the manufacturer’s certificate.
Can a civil engineer stamp this work?
Yes. Hamed Hasani is a California-licensed civil engineer, and California allows licensed civil engineers to perform this work on private projects. Some project specifications call for a structural engineer’s stamp by contract. We read the signer clause at scoping and tell you before any fee is committed.
Do you take hospital or school projects?
Hospital projects under HCAI and public school projects under DSA require a California-licensed structural engineer under state law. We do not take those as engineer of record.
What do you need to start?
The equipment schedule with weights and center-of-gravity data, manufacturer cut sheets with mounting details, the seismic specification section, the structural drawings for the floor, pad, or framing the equipment attaches to, and any manufacturer seismic certificates.
Where do you work?
Engineering is done from Dublin, California, with site visits across the San Francisco Bay Area. Projects elsewhere in California are taken by engagement.
Across the H2 Seismic Pro Practice