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GENERAL REGULATIONS L 304.E Construction and protection. Boiler rooms and fur- TABLE S05.4 nace rooms shall be protected as required by the hueraariaruil PIPING SUPPORT SPADING' Building Cade. MAXIMUM MAXIMUM HORIZONTAL VERTICAL 304.9 Clearances to combustible construction. Heat-pro- PIPING MATERIAL SPACING(feet) SPACINGCue° _during equipment and appliances shall be installed to.main- .ABS pip l I 10= lain the required clearances to combustible construction as Aluminumpipeand tubing 10 15 specified In the listing and manufacturer's instructions.Such Brass i 10 10 clearances shall be reduced only in accordance with Section pipe 30S.Clearances 10 combustibles shall include such consider- Brass tubing.l'h inch diameter 6 10 Mons as door swine,drawer pull, overhead projections or and smaller shelving and window Swim,shutters. Coverings and drapes. Brass tubing,I L'inch diameter 10 10 Devices such as doorstops or limits. closers,drapery ties or and larger guards shall not be used to provide the required clearances. Cast-iron pipe - 3 li 304.10 Clearances !'ram grade.Equipment and appliances Copper or copper-alloy pipe is 10 installed at grade level shall he supported on a level concrete Copper or copper-alloy tubing, fi 10 slab or other approved material extending not less than 3 1'/;inch diameter andsmalIer _ inches(76 ram) above adjoining grade or shall be suspended Copper or copper-alloytubing. It 10 not less than 6 inches(152 mu)above adjoining grade.Such 19,-inch diameter and larger support shall be in accordance with the manufacturer's instal- Po CPL'C pipe°ruching.)tech 3 co Munn instructions. and smaller jut 30411 Guards. Guards shall be prosldcd where apph opvc pipe or tubing,19;inch 4 10` ances.equipment, fans or other components that require set end larger. rice and roof hatch openings are located within 10 feet(3048 Lead Continuous 4 ram) of a roof cd_e or open side of a wnl ins surface and P'Pt' such edge or open side is located more than 30 inches (762 PB pipe or tubing 2.7,(32 inches) 4 min)rhos r the 11oor,.roof or erade below. The guard shall PEX tubing e/s(32 inches) dff extend not less than 30 inches(762 mu)beyond each end of poi prom PPor n such appliances,equipment,fans,components and roof hatch R ( )pipe /t(32 inches) 10 openings and the lop of the guard,shall'be located not less tubing,1 inch or smaller than 42 inches (1067 nun) above the elevated surface adja- Polyprepyicnc fool pipe or Q 10 cent to the guard.The guard shall be constructed so as to pre- mbine,l'Isinches orlarger sent the passage of a 21-inch-diameter ram)sphere and - PVC pipe 4 10 shall comply with the loading requirements for guards speck Steel tubing 6 10 fied nt the Building Code.:. Steel pipe 12 15 304,12 Area sened.Appliances serving different areas of a: For Si: I inch A.13.4 ram,:I Coat-304.S ram. building other than where they are installed shall be perma- a. See Section 301 Is nenily marked in an approvedsinner that uniquely identifies b. The 3111‘311ILEUE horizontalpwdin r t ewe hangers cited be the appliance and the area It serves increased to in feet Muse 10 riot lengths in pile inserted e. Mid-Mon€uide. SECTION 305 installed through holes or notches in studs,joists, rafters Pr PIPING SUPPORT similar members less than IV.,inches(38 mm)from the near- est edce of the member,the pipe shall be protected by shield 305.1 General. All mechanical system piping shall be sup plates-Protective steel shield plates having a minimum thick- ported in accordance with this section. Dees of 0.0575 inch(1.463 ram)(No. 16 gage)shall cover the 305.2 Materials.Pipe hangers and supports shall have surf- area of the pipe where the member is notched or bored, and dent strength to withstand all anticipated static and specified shall extend a minimum of 2 inches (51 min) above sole dynamic loading conditions associated with the intended use plates and below top places. Pipe hangers and supports thin yr€in direct contact with pip- in shall he of approved sit tcnals that arc compatible with the piping and that will not promote gals anic action. SECTION 306 3053 Structural attachment.Hangers and anchors shall be ACCESS AND SERVICE SPACE attached to the buildine construction in an approved manner. 306.1 Access for maintenance and replacement. ApPli- anees shall be accessible for inspection, service, repair and 303. Interval of support. Piping shall be supported at dis- r net ratLd without disablingremoving thepenmanon ot a lstucriOn- Le ten^e,not exceeding the spacing specified in Table 905.4,or to ee rmed assembly or mmosm s permanent wit�uucddn, in accordance with MSS SP-69. other appliances venting systems or any other piping or ducts 305.5 Protection against physical damage hi concealed not connected to the appliance being inspected, serviced, locations where piping, other than met-iron or steel, is repaired or replaced.A level ss orP ne space at least 30 inches 30 2014 OREGON MECHANICAL SPECIALTY CODE