Mechanical Quality Assurance Checklist

Predesign

• All required deliverables submitted
• Class C mechanical systems cost estimate accurate and correct

Schematic Design

• All required deliverables submitted
• Mechanical system(s) appropriate for the structure
• Energy analysis and life cycle analysis for mechanical systems selection accurate and correct
• Design narrative includes descriptions of all proposed mechanical systems (HVAC, plumbing, fire protection, fuel systems, etc.)
• Class B mechanical systems cost estimate accurate and correct

Design Development

• All required deliverables submitted
• Mechanical equipment locations thoroughly coordinated with architectural and structural
• Main ductwork and piping runs thoroughly coordinated with architectural and structural
• Outline specifications for all proposed mechanical systems
• Heating and cooling load calculations accurate and correct
• Plumbing design calculations accurate and correct
• Fire protection design calculations accurate and correct
• Revised Class B mechanical systems cost estimate accurate and correct

100% Draft Construction Documents or 100% Draft Design-Build Construction Documents

• Access door locations coordinated with architectural
• Louvers, vents, hoods, etc. on exterior of building coordinated with architectural
• Louver blankoffs coordinated with architectural
• All necessary isolation valves shown

General:

• All required deliverables submitted
• All required specification sections provided
• Equipment and materials conform to NPS standards
• Housekeeping pads provided for all large floor-mounted equipment
• Adequate access space for equipment servicing and adequate pull space for filters, tube bundles, motors, etc. provided
• Catwalks, walkways, mezzanines, etc. provided for access to equipment
• Access doors provided as necessary for valves, equipment, trap primers, water hammer arresters, etc
• All low point drain valves shown
• UL approved closure systems where piping penetrates fire rated assemblies
• Seismic restraints for tank type water heaters, hot water storage tanks, expansion tanks, equipment, piping, etc. in seismically active areas
• All mechanical systems power requirements thoroughly coordinated with electrical
• Specifications thoroughly coordinated with drawings
• Class A mechanical systems cost estimate accurate and correct

HVAC:

• HVAC systems designed to conform to all applicable codes and standards
• Combustion air provided for fuel-burning appliances
• Proper clearances to combustibles provided for fuel-burning appliances
• Proper venting provided for fuel-burning appliances
• Ventilation air provided per ASHRAE 62
• Restroom ventilation systems provided (unless operable windows or other passive systems can provide required ventilation function)
• Ductwork and damper arrangements for air side systems correct
• Ductwork sized correctly
• Fire dampers where ductwork penetrates fire rated assemblies
• Combination smoke and fire dampers shown where necessary and coordinated with electrical
• Duct smoke detector locations shown and coordinated with electrical
• All necessary air vents shown in hydronic systems
• All balancing valve locations shown in hydronic systems
• Proper air control and system pressurization shown for hydronic systems
• Anti-freeze and anti-freeze makeup systems provided for hydronic systems that have a high probability of freezing or will be seasonally operated
• Adequate pressure rating for boilers
• Pressure setting for pressure relief valves correct
• Piping and pumping arrangements for hydronic systems correct
• Primary/secondary pumping arrangements for multiple boiler installations
• Properly sized diaphragm type expansion (compression) tanks for hydronic systems
• Chemical feeders (pot type) for hydronic systems
• Sound attenuation measures provided where necessary
• Adequate vibration isolation for pumps, fans, and other rotating or vibration producing equipment
• Condensate drains with vented traps shown for all cooling coil condensate drain pans
• All control device locations shown (thermostats, switches, sensors, actuators, control panels, etc.)
• Control system diagrams coordinated with what is shown on the plans
• Control system points list accurate and correct (DDC systems)
• Control systems sequence coordinated with what is shown on the plans and what is shown on the control systems diagrams and points list
• Control systems logic coordinated, correct, and unambiguous

Plumbing:

• Plumbing systems designed to conform to all applicable codes and standards
• Building domestic water and sewer services coordinated with civil utility plan
• Pressure reducing valve(s) installed if water supply pressure > 80 psi
• Water meters on domestic water services of each building
• All fixtures properly trapped and vented
• All necessary cleanouts shown
• Trap primers provided for infrequently used floor drains
• Low-flow fixtures and fittings specified
• Sump pumps and sewage ejectors where necessary
• Combustion air provided for fuel-burning domestic water heaters
• Proper clearances to combustibles provided for fuel-burning domestic water heaters
• Proper venting provided for fuel-burning domestic water heaters
• Domestic hot water expansion tank (if pressure reducing valves or check valves are installed on the domestic water service)
• Double-wall heat exchangers with leakage path open to atmosphere for indirect-fired domestic water heaters
• Proper discharge routing and termination for domestic water heater temperature and pressure relief valves
• Cross connection control (vacuum breakers on all hose connections, backflow preventers on hydronic system makeup water connections, irrigation system connections, etc.)
• Airgap fittings with outlets routed to floor drain or sink for all reduced pressure zone backflow preventers installed indoors
• Water hammer arresters provided for domestic water systems with quick-closing valves
• Exterior wall hydrants or hose bibbs
• Hose bibs in mechanical spaces
• Domestic water piping sized correctly
• Drain, waste, and vent (DWV) piping sized correctly
• Oil/water separators for floor drains in automotive repair facilities
• Secondary (overflow) roof drains provided (if roof drains are provided)
• Earthquake shutoff valves in fuel gas services in seismically active areas
• Gas meters provided in building fuel gas services (except where a single building is served by a single LP-gas tank)
• Primary-secondary pressure regulation on LP-gas vapor services

Fire Protection:

• Fire protection systems designed to conform to all applicable codes and standards
• Proper hazard classification(s) used
• Building fire protection water service coordinated with civil utility plan
• Fire department connection and inspector's test valve locations shown
• Risers and floor control valve stations locations shown where necessary
• Locations of fire pumps and fire pump controllers shown where necessary
• Locations of pressure tanks, air compressors, nitrogen bottles, etc. shown where necessary
• Locations of standpipes and hose valves shown where necessary
• Locations of sprinklers coordinated with architectural reflected ceiling plans
• Double check valve assembly provided on fire protection water service
• Tamper switches for supervised valves coordinated with electrical
• Flow switches for sprinkler activation alarm(s) coordinated with electrical
• Piping and valving arrangements correct for fire protection systems
• Supervised control valves provided in branch lines feeding elevator machine room, elevator hoistway, computer network room, and telecommunications equipment room sprinklers

Fuel Systems:

• Fuel systems designed to conform to all applicable codes and standards
• Proper clearances provided between fuel storage tanks, buildings, and public ways
• Vehicular impact protection for aboveground fuel storage tanks
• Fire resistant fule storage tanks specified for aboveground liquid fuel storage
• Overfill spill containers, overfill protection, secondary containment, fire resistant construction, continuous leak detection monitoring, tank level monitoring (inventory control), normal vents, emergency vents, vapor recovery, anti-siphon measures, etc. provided as necessary for liquid fuel storage
• Emergency shutdown switch provided for gasoline dispensing facilities
• Shear valves provided for vehicular fuel dispensers
• Containment sumps provided for vehicular fuel dispensers
• Vapor recovery provided for vehicular fuel dispensers as necessary
• Secondary containment with continuous leak detection monitoring for pressurized underground fuel piping
• Line leak detection system provided for pressurized fuel piping
• Excess flow valves, emergency shutoff valves, etc. provided for LP-gas fuel storage
• Adequate ballast and hold-downs for underground fuel storage tanks
• Adequate corrosion resistance or corrosion protection for underground fuel storage tanks
• Proper piping materials and piping corrosion protection to suit the particular fuel system application

Submit 100% Complete Construction Documents or 100% Complete Design-Build Construction Documents for Final Approval

• Required deliverables submitted
• All review comments from 100% Draft Review satisfactorily resolved