Zip Ties On Flex Ducts - The Building Code Forum
Oct 19, 2009 · I have seen a lot of the plastic type zip ties [ cable ties ] used to secure the flexible UL-181 ducting to the HVAC unit housings. Are they an approved means of fastening the ducting to the …
flex duct - The Building Code Forum
Sep 23, 2020 · Applicable code: 2018 IMC Applicable sections: 603.6.2.1 and 603.6.2.2 Flexible air connectors (a.k.a. flex duct) shall be limited in length to 14 feet. Flexible air connectors (a.k.a. flex …
Venting clearances for a coffee roaster - The Building Code Forum
Oct 25, 2009 · The blower motor/fan creates a positive pressure which by regulations/codes dictates a specific type of vent ducting is utilized. Normally, the coffee roaster’s internal blower can …
Flex Duct | The Building Code Forum
Feb 1, 2012 · I'm aware of sizing & turbulence issues with flex duct but do you see issues with using class 1 flex duct within concealed chase in a SFD from basement through two floors into attic, fire …
UL-181 tape for ducts - The Building Code Forum
Jun 13, 2013 · Closure systems used with flexible air ducts and flexible air connectors shall comply with UL 181B and shall be marked181B-FX for pressure-sensitive tape or 181B-M for mastic. Duct …
Dryer duct joint connection methods - The Building Code Forum
Nov 15, 2011 · Closure systems used to seal flexible air ducts and flexible air connectors shall comply with UL 181B and shall be marked "181 B-FX” for pressure-sensitive tape or "181 B-M” for mastic. …
Penetrations followed by flex duct within rated floor-ceiling assembly
Oct 19, 2009 · If it does it is in violation of 716.7 Flexible ducts and air connectors. Flexible ducts and air connectors shall not pass through any fire-resistance-rated assembly. Flexible air connectors shall …
Under-slab dryer vent - The Building Code Forum
May 26, 2011 · This is a common mistake made with air ducts and dryer ducts and I do wonder sometimes if it's done for the vender's convenience or a product marketing strategy to group the …
Fire Alarm Wiring Protected in Conduit - The Building Code Forum
Oct 16, 2009 · For a high rise hotel most of the fire alarm wiring is in conduit. There are panels on every other floor. After the wiring penetrates the floor, it is sealed but then goes to a ladder rack, exposed …
Duct hanging question | The Building Code Forum
Dec 13, 2013 · Flexible and other factory-made ducts shall be supported in accordance with the manufacturer's installation instructions. Look at the size and will the hangers and fasteners support …