Mechanical Plan Review Slide 2 Review Plan Package Use
Group/Occupancy Correct Code Reference/Conformance Revisions
Mechanical Plans/Spec Books Structural Plans Site Plans Fire
Suppression (Comm/Ind) Slide 3 Use Group / Occupancy Slide 4
Restaurants and Lounges: Duct work both HVAC & kitchen exhaust
Equipment approval fans and Mau units Gas piping layout sizing,
location, plenum Exhaust balance sheet 10 degree >, 50% OA
Cooking equipment location fryers all under hood Grease duct
elevation shown Clearances and Compliance Combustion air
compliance? Slide 5 Use Group/Occupancy Offices: Duct layout flex
in accessible area? Return air plenum? Gas piping layout, sizes
Equipment specs R.A. smoke detect, outside air, economizer Access
to roof? Equipment clearances combustion air Fire ratings maintain?
Ventilation? Provided, proper size toilet fans? Mix use R.A. Slide
6 Use Group/Occupancy Industrial: Equipment listed? Install to
listing? Gas pipe layout Ventilation NFPA 91 Chap 11 Uniform Boiler
and refrigeration rooms to compliance Slide 7 Use Group/Occupancy
Miscellaneous: Spray booths, auto service Dry cleaners High hazard
explosion relief Slide 8 Correct Code Reference/Conformance Slide 9
Slide 10 Slide 11 Slide 12 Commercial Plans Dependant on Occupancy
Use Ventilation air and exhaust systems Roof-top equipment
requirements Ceiling air plenums Fire suppression requirements
Smoke detection Duct system and construction Fuel gas piping Fire
resistance ratings and dampers Storage areas Slide 13 Slide 14
Revisions Slide 15 Slide 16 Common Mechanical Plan Review Comments
M1: Provide details of materials and methods used to provide
protection of fire resistance rated assembly penetrations M2:
Indicate required clearances from combustibles M3: Rooftop
appliances within 10 ft. of a roof edge require a guard M4: Provide
a 125v GFI protected rooftop outlet within 25 ft. of a rooftop unit
Slide 17 Common Mechanical Plan Review Comments M5: Submit a
ventilation schedule for all rooms and spaces M6: Verify air is not
being re-circulated between dissimilar occupancies M7: Provide a
duct smoke detector in the air handling system M8: Submit details
of the kitchen exhaust and hood system Slide 18 Common Mechanical
Plan Review Comments M9: Remove mechanical pipes and ductwork from
the elevator shaft M10: Remove fuel fired appliance from the
ceiling plenum M11: Provide combustion and dilution air
calculations Slide 19 Common Mechanical Plan Review Comments M12:
Indicate that motorized louvers are interlocked with mechanical
equipment M13: Provide details on clothes dryer exhaust systems
Slide 20 Slide 21 Mechanical Plans / Spec Books Slide 22 Exhaust
Exhaust provides reasonable protection from hazards that involve
materials and/or gases, which are flammable, explosive, toxic or
otherwise hazardous Slide 23 Exhaust What must be exhausted
Byproducts of machines, vats, tanks, furnaces, forges, salamanders
and devices which produce or throw off dust or particles that float
in the air or which emit heat, odors, fumes, spray, gas or smoke in
enough quantity to be irritating or injurious Fuel dispensing areas
Equipment and service rooms Spray-painting and dipping rooms Slide
24 Exhaust Motion picture projectors Dry-cleaning rooms LP gas
distribution facilities Hazardous materials storage Public garages
Cloths dryers Kitchens Specific rooms Slide 25 Exhaust for Kitchens
Exhaust must be designed to handle grease Fans are steel or listed
alternate for cooking Fan motors are outside of exhaust air stream
Fan blows upward Ducts no less than 16 ga steel or 18 ga stainless
steel Slide 26 Exhaust for Kitchens Duct joints welded or brazed
(no screws) Non-combustible supports (no screws) Prevention of
grease accumulation Duct clearances Make-up air equal to exhaust
Tempered to within 10F of room temp Slide 27 Site Plans Slide 28
Slide 29 Slide 30 Fire Suppression (Commercial/Industrial) Slide 31
Slide 32 Slide 33 Slide 34 Slide 35 Slide 36 Slide 37 Slide 38
Slide 39 Slide 40 Slide 41 Slide 42 Slide 43 Slide 44 Slide 45
Slide 46
