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2009 IECC VS ASHRAE 90.1 MASTER 121210 copy

- F 9F - * 1%, 1, )&*&10 ASHRAE 90.1-2007 IECC 2009 Contains a Space-by-Space method as an alternative to the by-building-type prescriptive tables for

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ource Comparison of Standard and the 2009 IECC with Respect to Commercial Buildings Prepared by the Pacific Northwest National Laboratory for the Department of Building Energy Codes Program December 2009 )- 5) + ,/* 2,+ !+&2,+ , C/ 0& +2 )D 5&) &+$ ASHRAE IECC 2009 Spaces in buildings used primarily for living and sleeping. Residential spaces include dwelling units, hotel/motel guest rooms, dormitories, nursing homes, patient rooms in hospitals, lodging houses, fraternity/sorority houses, hostels, prisons, and fire stations. Includes R-3 buildings, as well as R-2 and R-4 buildings three stories or less in height above grade. (not R-1, hotels and motels) All else is considered commercial. 05)1@ + 0,* &+01 + 0? 5&) &+$ 5&)1 1, 1% NLLT 7,5) % 6 ) 00 /&$,/,50 1% /* ) +6 ),- -/,6&0&,+0 1% + & 5&)1 1, TLAMFLRA +0 /1 -,7 / , ),$,0B ,- J --)& 2,+ 51 ,1 ,1% &1% / QLMAM ,- & ( +)9 + ,*-)& + --/, % , ,*-)& + /, 00 501 1% /,' 1 ,*-)9 7&1% 1% > Comply with the Envelope Requirements Comply with the Mechanical/SWH Requirements Comply with the Power & Lighting Requirements Section 502 Section 5 Sections 503 and 504 Section 6 Section 505 Section 9 Document Compliance with the IECC Plan Review Inspection +0 /1 -,7 / , ),$,0B ,** / & ) +6 ),- .5&/ * +10 % 1 &0 1% 5&) &+$ % /* ) +6 ),- > ,, E &)&+$ 00 * )9 )) 00 * )9 /2 ) + 01/ 2,+ + (9)&$%10 ),,/ 00 * )9 ) $ ),7 / )) 00 * )9 *&F% 1 0- 0&$+ 2,+ ASHRAE IECC 2009 Has a specific designation of semi-heated space ( Btu/h/ft2 up to 15 or 20 for climate zone 5 or 6) and comparable thermal envelope provisions that are less rigorous than those for heated spaces. (Tables through for the appropriate climate zone) No such provision for semi-heated; only conditioned or unconditioned. (Table (1)) 05)1@ *&F% 1 0- 0 5+ / 1 + / TLAMFLR $ + / ))9 % 6 *,/ /&$,/,50 1% /* ) +6 ),- / .5&/ * +10 5+ / NLLT A )&* 1 ,+ 0 G NLLT ) QLNANHMI G )&* 1 ,+ Q ) QAQFQ ) QLNAO ) QAQFQ ) 0 OLOAMAOHMI + HNI 5)1 F 1,/0 TABLE (1) DEFAULT GLAZED FENESTRATION U-FACTOR TABLE (2) DEFAULT DOOR U-FACTORS )&+$ , + 01/ 2,+ /, 5 10 QASANAN % + 1% + 01/ 2,+ -/, 5 1 , 0 +,1 % 6 05 % + * -) 1 ? 1% &+01 )) / ,/ 05--)& / , 05 % + 01/ 2,+ 0% )) -/,6& 0&$+ + 1 /2! 2,+ ,/ 1% &+01 )) + 01/ 2,+ )&02+$ 1% F 1,/? ? + 1% &/ ) ( $ / 1 A ) :&+$ 7&1%&+ MQ 1, OL; , 6 /2 ) ASHRAE IECC 2009 Considers glazing less than 60 degrees from the horizontal plane as skylights. Considers glazing 15 degrees or less from vertical as skylights. (Glazing over 15 degrees from vertical is part of the wall.) 05)1@ ) :&+$ &+ 1% MQ 1, OLF $/ / +$ 5+ / TLAMFLR 7,5) ,+0& / 0(9)&$%10 / 1% / 1% + 6 /2 ) + 01/ 2,+ + ? 0 05 %? ,5) % 6 ) 00 / 1% /* ) / .5&/ * +10 1% + 5+ / NLLTA 0A (9)&$%10 + ))0 IECC 15 + degrees = Skylight ASHRAE 31 + degrees = Skylight Roof/Skylight Area Roof/Skylight Area (9)&$%1 8&*5* ASHRAE IECC 2009 The total skylight area shall be less than 5% of the gross roof area. The total skylight area shall not exceed 3% of the gross roof area. 05)1@ NLLT )),70 ) 00 0(9)&$%1 / A &+ ,7F1,F ))F 2, H I ASHRAE IECC 2009 A WWR of less than 40% allows using a provision parallel to 2009 IECC. ASHRAE allows you to exceed 40% window to wall area. Glazing beyond the 40% maximum WWR requires a building to be evaluated under ASHRAE 05)1@ % ,5) ) 5) 1 & / +1)9 5+ / % ,-2,+ + 50 ,+ 50&,+ ,6 / 7%& % -/,6&0&,+0 1, ,)),7A 1 /*&+&+$ 1% W + )0, 6 /9 50 , 1% & / + &+ 0(9)&$%1 !+&2,+0A /,6&0&,+0 ,/ ,6 F J ),7F$/ 7 ))0 ASHRAE IECC 2009 Portions of walls above grade are treated as above grade and portions of the same walls that are below grade are treated as below grade. Any wall that is <15% above grade and 85% or more below grade is considered entirely a below-grade wall. Similarly, a wall >15% above grade would be considered entirely an above-grade wall. 05)1@ /,6&0&,+0 ,/ ),7F$/ 7 ))0 / $ + / ))9 ) 00 01/&+$ +1 1% + ,6 F$/ 7 ))0? + 0&+ / ) 26 )9 0* )) / 2,+ HMQWI ,6 $/ -50% 0 1% +2/ 7 )) 1,7 / *,/ /&$,/,50 ,6 F$/ /&1 /& 5+ / 1% NLLT ? 1% + * 9 *,/ 01/&+$ +1 ,+ 6 / $ A - .5 + +,+F,- .5 00 * )& 0 ASHRAE IECC 2009 Doors that are more than one-half glass are considered fenestration. Opaque doors are doors having less than 50% glass area and should b e considered as part of the gross area of above-grade walls that are part of the building envelope. 05)1@ % ,/ ,- .5 + +,+F,- .5 00 * )& 0 / +,1 )7 90 & +2 ) 17 + 1% 17, , 5* +10? + &+ 0,* &+01 + 0 TLAMFLR &0 *,/ 01/&+$ +1 + &+ ,1% /0 NLLT &0 *,/ 01/&+$ +1A ,/ 8 *-) ? &+ )&* 1 :,+ Q? 07&+$&+$ ,- .5 ,,/0 % 6 + 00 * )9 * 8&*5* , FLAQLL &+ H/ 0& +2 )I 51 FLARL &+ NLLT /,5- A QLNANAR - .5 ,,/0 ,,/0 % 6&+$ X QLW $) 00 / 7&+$&+$ ,,/0 1 F 1,/ / .5&/ * +1 ,))F5- , 0)& &+$ ,,/0 )&* 1 ,+ 0 M G O@ FMAPQ )&* 1 ,+ 0 P &+ )5 &+$ /&+ G S@ FLAQL QLNAPAR + 1,/9 .5&/ * +10 G 02 5) 0 +,7 &+ ASHRAE allows climate Zone 1, 2, and 3 exemptions to Vestibules IECC allows climate Zone 1 and 2 exemptions , &+$ , ( 1% /0 )0 ASHRAE IECC 2009 Required in Climate Zones 4 8 only. Required if space is conditioned. 05)1@ + 0,* 0 0? 1% )),7 ) *- / ) ( $ / 1 &+ / %&$% / 1% + 1%,0 &+ 1% A %50? &+ 0,* 0 0? &0 *,/ 01/&+$ +1A )),7 ) * 8&*5* F 1,/ ASHRAE IECC 2009 Allows for an increase in the allowable maximum U-factor (reduction in required R-value) for certain roof/ceiling assemblies if the roof meets certain reflectance (high albedo) and emissivity requirements. This allowance is not provided in the 2009 IECC. 05)1@ + )&* 1 :,+ 0 MFO? &+05) 2,+ / .5&/ * +10 * 9 ) 00 5+ / TLAMFLRA ) QAQAOAM +0 /1 -,7 / , ),$,0B ,** / & ) % +& ) .5&/ * +10 %51, *- / ,+1/,)0 ASHRAE IECC 2009 Non-motorized dampers acceptable in Zones 1, 2 and 3. Many more requirements. Non-motorized dampers acceptable in buildings under 3 stories and for buildings of any height in Zones 1, 2, and 3. .5&-* +1 ,6 /0&:&+$ ASHRAE IECC 2009 Does not limit HVAC equipment oversizing. Limits HVAC equipment oversizing (Section ). Heating and cooling equipment and systems shall not exceed the loads calculated in accordance with section (references ASHRAE/ACCA Standard 183.) 05)1@ + 0,* 0 0? 1% NLLT 7,5) / 05)1 &+ .5&-* +1 1% 1 ,- / 1 0 *,/ " & +1)9 ,+ 0 0,+ ) 0&0A /1 &+ .5&-* +1 + 0901 *0 ASHRAE IECC 2009 Tends to be more rigorous and, in some cases ( , fume hoods, cooling towers, dehumidification, and kitchen exhaust hoods), has requirements that are not in the IECC 2009. Some of the HVAC equipment not listed in the IECC may be included in the IMC because it is a family of codes. 05)1@ % 05 1) & / + 0 17 + 1% 17, &+ 1%&0 / ,5) % 6 + &*- 1 ,+ 1% $$/ $ 1 ? &+ - /2 5) / 1% 1 / .5&/ * +10 1 + 1, *,/ /&$,/,50A - / 2,+0 J &+1 + + +5 )0 ASHRAE IECC 2009 Requires the delivery of Operation and Maintenance (O&M) manuals for the building systems. (Sections and ) Requires that an operating and maintenance manual be provided to the building owner by the mechanical contractor. (Section ) 05)1@ % / .5&/ * +10 &+ / *,/ 1 &) 1% + A ,/ 8 *-) ? / .5&/ 0 1% 1 /,52+ * &+1 + + 2,+0 0% )) ) /)9 & +2! + / .5&/ 0 1% + * + / 00 , 1 ) 01 ,+ .5 )&! 0 /6& $ + 9A +0 /1 -,7 / , ),$,0B ,** / & ) &$%2+$ .5&/ * +10 - F 9F - * 1%, 1, )&*&10 ASHRAE IECC 2009 Contains a Space-by-Space method as an alternative to the by-building-type prescriptive tables for lighting power limits (Section and Table ) The interior lighting power is the floor area for each building area type listed in Table times the value from Table for that area. Each building area shall be treated as a separate area. 05)1@ 5&) &+$ ,*-)9&+$ 6& 1% - F 9F - * 1%, * 9 05 ' 1 1, *,/ ,/ ) 00 /&$,/,50 / .5&/ * +10 - + &+$ ,+ 1% 0- &! 0 , 0- 19- 0 ,+1 &+ 7&1%&+ 1% 5&) &+$A &$%2+$ ,+1/,)0 ASHRAE IECC 2009 ASHRAE requires automatic lighting shutoff and has similar requirements for overriding automatic shutoff ( 2 hours vs. 4 hours) and for sleeping unit controls as IECC. IECC also has requirements for light reduction controls, holiday scheduling and daylight zone control that are not included in ASHRAE. 05)1@ % 0 0,* 7% 1 *,/ 1 &) + /&$,/,50 )&$%2+$ ,+1/,) / .5&/ * +10? &+ - /2 5) / % 0 0 2,+ ,+ 9)&$%1 :,+ ,+1/,)A +1 /&,/ / 1 &) )&$%2+$ )),7 + 0 ASHRAE IECC 2009 (Retail Area 1 x W/ft2) (Retail Area 2 x W/ft2) (Retail Area 3 x W/ft2) (Retail Area 4 x W/ft2) (Retail Area 1 x W/ft2) (Retail Area 2 x W/ft2) (Retail Area 3 x W/ft2) (Retail Area 4 x W/ft2) 05)1@ % 0 %&$% / &2,+ ) / 1 &) )&$%2+$ )),7 + 0? &A A &0 *,/ 01/&+$ +1A 81 /&,/ )&$%2+$ -,7 / +0&2 0 ASHRAE IECC 2009 Table lists LPDs for tradable vs. nontradable surfaces, but lighting zones are not designated. Table (1) lists lighting zones and Table (2) lists LPDs for each of 4 lighting zones and for tradable and nontradable surfaces. 05)1@ + $ + / )? 0,* , 1% 81 /&,/ 0 &+ / ),7 / H*,/ / 01/& 26 I? 51 &1 6 /& 0 9 )&$%2+$ :,+ A +0 /1 -,7 / , ),$,0B 5 02,+0 J +07 /0 % +( ,5 ,/ 4 + &+$= + ( / F + /$9 % /,+ 4 /0,+ F , $

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