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1613.6.8 HVAC ductwork with Ip = 1.5

Ohio Building Code 2011 > 16 Structural Design > 1613 Earthquake Loads > 1613.6 Alternatives to ASCE 7 > 1613.6.8 HVAC ductwork with Ip = 1.5
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Seismic supports are not required for HVAC ductwork with Ip = 1.5 if either of the following conditions is met for the full length of each duct run:

  1. HVAC ducts are suspended from hangers 12 inches (305 mm) or less in length with hangers detailed to avoid significant bending of the hangers and their attachments, or
  2. HVAC ducts have a cross-sectional area of less than 6 square feet (0.557 m2).
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Related Code Sections


1613.6.8 Structural Design, HVAC ductwork with Ip = 1.5
Seismic supports are not required for HVAC ductwork with I p = 1.5 if either of the following conditions is met for the full length of each duct ...
Ohio Building Code 2011 > 16 Structural Design > 1613 Earthquake Loads > 1613.6 Alternatives to ASCE 7 > 1613.6.8 HVAC ductwork with Ip = 1.5
3412.6.7 Existing Buildings and Structures, HVAC systems
Evaluate the ability of the HVAC system to resist the movement of smoke and fire beyond the point of origin. Under the categories in Section ...
Ohio Building Code 2011 > 34 Existing Buildings and Structures > 3412 Compliance Alternatives > 3412.6 Evaluation process > 3412.6.7 HVAC systems
2444.3 Fuel Gas, Ductwork
Ducts shall not be connected to a unit heater unless the heater is listed for such installation ...
Ohio Residential Code 2013 > 24 Fuel Gas > 2444 Unit Heaters > 2444.3 Ductwork
920.3 Specific Appliances, Fireplaces and Solid Fuel-Burning Equipment, Ductwork
A unit heater shall not be attached to a warm-air duct system unless listed for such installation ...
Ohio Mechanical Code 2017 > 9 Specific Appliances, Fireplaces and Solid Fuel-Burning Equipment > 920 Unit Heaters > 920.3 Ductwork
920.3 Specific Appliances, Fireplaces and Solid Fuel-Burning Equipment, Ductwork
A unit heater shall not be attached to a warm-air duct system unless listed for such installation ...
Ohio Mechanical Code 2011 > 9 Specific Appliances, Fireplaces and Solid Fuel-Burning Equipment > 920 Unit Heaters > 920.3 Ductwork
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