Guides
Submittal checklists that get approved the first time.
What engineers check in electrical and HVAC submittals, section by section.
Lighting submittal checklistA line-by-line checklist for LED fixture submittals: listings, DLC, efficacy, CCT and CRI, dimming, ratings, warranty and the letters engineers ask for.Rooftop unit submittal checklistWhat to verify in a packaged rooftop unit submittal: capacities, efficiency ratings, refrigerant, casing and drain pan, coils, filters, economizer, controls, electrical data and curb.Why submittals get rejectedThe most common reasons engineers return submittals, from missing listings to options not called out in the model number, and a simple way to catch them first.Substitution requestsWhat engineers look for in a substitution request for an equal product, and how to back every claim with the product data.AHRI certificatesWhy engineers ask for an AHRI certificate, what to check on it, and how it relates to the ratings in the spec.DLC Premium vs. StandardWhat it means when a spec requires DLC Premium, how to verify a listing, and what to do when the submitted fixture is listed only as Standard.Panelboard submittal checklistWhat to verify in a panelboard submittal: ratings, bus, short-circuit rating, enclosure, breakers and the documents the spec asks for.Spec compliance matrixA practical format for a spec compliance matrix: columns, statuses and page references, for submittals, substitution requests and bid responses.
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