MEP PE Stamp in Houston, TX: What Reviewers Check Before Sealing

The mechanical review starts with the load calculations, because everything downstream — equipment selection, duct sizing, ventilation strategy — inherits their assumptions. I check that the calculations used Houston-appropriate outdoor design conditions, realistic internal gains for the occupancy, and ventilation rates per code, with the latent load broken out and visible rather than buried. Equipment selection gets matched against both sensible and latent capacity, and I look hard at ventilation strategy: code-required outside air in a humid climate is a dehumidification load that has to be accounted for, not just a duct connection. Dedicated outside air systems, energy recovery, and proper controls sequencing are the tools that make Houston buildings comfortable, and the sealed drawings need to show them working as a system, not as catalog cuts pasted on a plan.

Houston's MEP reviewers read the set the way a contractor builds from it: does the logic hold together? Riser diagrams get checked against the floor plans — every fixture on the plan should trace to the riser, and the riser should show pipe sizing, slopes, and venting that satisfy code. Panel schedules get checked against the electrical riser: calculated loads, breaker sizes, and feeder sizes must agree, and the service calculation must support the whole building. Plumbing fixture counts get checked against occupancy, and specialty items like grease waste, medical gas, or commercial kitchen exhaust get extra attention because they carry their own code chapters. The PE's pre-seal review runs this same gauntlet, so the corrections come from the engineer — who can fix the design — instead of from the city, which costs a review cycle.

An MEP package is ready for the PE's review — and then for ProjectDox — when these items are resolved. Coordination between the MEP sheets themselves is where most corrections originate. • HVAC load calculations with Houston design conditions and latent loads broken out • Equipment schedules matching the mechanical plans, with latent capacity verified • Plumbing plans, riser diagrams, and fixture counts coordinated and code-compliant • Electrical plans, panel schedules, and riser diagram in full agreement on loads and protection • Energy compliance documentation reconciled against the actual sealed design • MEP layouts coordinated with structural framing to catch clashes before plan check does