Mechanical | 3S MEP

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Commercial and residential buildings pressurization calculations

Building pressurization calculations has long been one of the unknowns to most HVAC professionals. We have always wondered how much air we need to pressure a building.

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Performance Data Clarage Type NH Forced Draft Fans from Clarage Fan Company, Michigan

Clarage Type NH Forced Draft Fans from Clarage Fan Company, Michigan. Find below product data sheet for these fans.

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Electrical for Mechanical Engineers

The presentation below provides crucial electrical engineering information which is must for any mechanical engineer.

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Mechanical Systems Commissioning – Is independent third party required!!

ASHARE standard 90.1 – 2010 bases commissioning requirements on floor area. It requires commissioning for projects larger than 50,000 sq.

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City of Chicago Ventilation rate table

Attached below is ventilation rate table for City of Chicago. It provides ventilation rate for most normal occupancy in a building within the city. This would be required for HVAC system design for any projects within the city.

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Smoke Detectors on Fan Systems requirement IMC and NFPA 90A

IMC 2009 requires smoke detectors on fan systems with capacity greater than 2,000 CFM on return duct or plenum upstream of any filters, exhaust air connections, outdoor air connections, or decontamination equipment and appliances. There are several exceptions.

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