A 900-kW standby generator system and enclosed yard now back up the building.
JS Global designed and built a 900-kW standby generator system and screened generator yard on the grounds of an occupied federal building, and resolved an unmapped underground obstruction found days after mobilization.
The generator had to serve critical building systems and look like it belonged on historic grounds.
JS Global designed the generator yard, managed the geotechnical, design, and testing subcontractors, and self-performed the electrical feeder raceways. The site jurisdiction required architectural screening and a generator finish matched to the adjacent historic building.
Win approval for the generator location and yard design from the site jurisdiction.
Work beside active building parking and a loading dock with no field trailer and minimal laydown.
Match the generator finish and screening to the adjacent historic building.
Respond when the caisson drill struck an abandoned manhole that no utility survey showed.
Emergency power feeders were routed along an existing loading dock tunnel to a new automatic transfer switch.
When the generator was relocated, JS Global designed the new yard and carried it through permitting and safe-dig approval.
When the drill struck the abandoned manhole, work stopped and the team developed a solution acceptable to the jurisdiction’s engineering division.
The drawing set expanded to include architectural elevations and electrical drawings, and the submittal went through six review rounds to approval.
Factory and field load bank testing, a building load transfer test, owner training, and record documents closed out the work.
A 900-kW standby generator system and enclosed yard now back up the building.
Emergency feeders connect the generator to a new 1600A automatic transfer switch and to critical air handling equipment.
The architectural screening and generator finish were approved by the site jurisdiction.
Load bank testing and a full building load transfer test were completed, with training and as-built documents delivered.
No survey showed the obstruction, so the team stopped, solved it with the approving engineers, and documented the solution.
That discipline, together with a design package built to satisfy several reviewers at once, carried the generator yard through six review rounds to approval.
Practical answers about approvals, unexpected conditions, and commissioning.
Share the site conditions, approval path, access limits, and schedule. JS Global will help plan for the reviews and the surprises that come with them.
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