MBE / HUB-Certified Texas MEP
Free MEP Tools from Pyra Engineering
Quick code-minimum calculators for the most common code-minimum sanity checks on Texas commercial projects. Use them to size early or sanity-check a vendor submittal — sealed permit drawings still need a licensed engineer.
Restaurant Exhaust CFM Estimator →Type I commercial kitchen hood prescriptive minimum airflow per IMC 507.13.1. Wall canopy, island, eyebrow, backshelf – under a minute.NFPA 54 Gas Pipe Sizer →Schedule 40 black steel longest-length method, 0.5 psi inlet, 0.5 w.c. drop. Returns minimum pipe diameter for your demand and run.Transformer FLA Calculator →Three-phase or single-phase full-load amps per NEC Article 450. Returns primary FLA, secondary FLA, and min OCPD breaker size.Restroom Fixture Counter (IPC + TAS) →Required water closets, lavatories, drinking fountains, and service sinks for your occupancy type and load per IPC Table 422.1.HVAC Tonnage Estimator →Cooling tonnage by sf/ton rule-of-thumb adjusted for Texas climate and building type. Use as a sanity check before a Manual N load calc.ASHRAE 62.1 Outdoor Air Calculator →Required ventilation rate per ASHRAE Standard 62.1 Table 6.1 (Vbz, zone level). Picks the right cfm/person + cfm/sf row for your occupancy.Grease Interceptor Sizer →UPC-based interceptor sizing with Texas AHJ multipliers (Houston 1.25x, Austin 1.5x). Returns required GPD capacity and typical tank size.Electrical Service Demand Calculator →NEC 220 simplified service-demand calculation. Returns total demand load, service amps at 208/3 or 480/3, and recommended service size.Texas Construction Cost Estimator →Hard $/sf and total construction cost by building use, new vs remodel, quality tier, and major TX city. Plus estimated design-fee soft cost.
More tools shipping soon. Need a calculator we don’t have? Tell us what you sanity-check most — we’ll build it.