Originally Posted By: rpalac
This post was automatically imported from our archived forum.
Mechanical Code information is followed by two brackets with numbers from [UMC] [CABO]
Code information is followed by two brackets [301.4.1] [912.3].
The first contains the code numbers or basis for the information preceding the brackets. The first bracket will contain a reference number to the UMC.
The second bracket is the corresponding code number or reference as cited in the CABO One and Two Family Dwelling Code.
The third bracket is the corresponding code number or reference as cited in the BOCA.
Flexible connector max. 6ft. & not concealed [504.3.2.1] [2607.6]
Duct must be smooth metal inside [504.3.2.1] [1801.1]
4in. min. duct [504.3.2] [1801.3]
No screws into airflow [504.3.1] [1801.1]
14ft. max. (25ft.**) run with two 90? bends, deduct 2ft. (5ft.** ) per 90? bend in excess of two bends or by manu. instructions [504.3.2.2] [1801.3]
Termination&SHY;3ft. from property line [504.4] [302.2]
Backdraft damper req'd. & no screens [504.3.1] [1801.1]
Bathroom Fan (locating fan other site)
too close...Termination min. 3ft. from opening or property line [504.4] [302.2]
Backdraft damper [504.1] [n/a]
Vert. clearance 30in. (24in. if 1/4 in. millboard & 28ga.) [917.1] [2201.1]
Gas connector & valve pt-13 [2606.3]
Range Hood(Environmental Air)
too close...Termination clearances min. 3ft. from opening or property line [504.4] [302.2]
Smooth interior, 26ga. metal [504.2] [1802.1]
Backdraft damper [504.1] [1802.1]