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Home My WebLink AboutCorrespondence-Clarification of Work ScopeConbaúr Colleen W¡rth From: Sent: To: Subject: Colleen, See below answers in Red Thank you! Carrie Dion 970-379-9477 ca rrie dzremodel i n g.com < carrie@dzremodeli n g.c .^, Chlr/¿Øbn At? ::î::"1i'#;lÍ;å?3i,:lJÍåå1"..", l,/arK fueu RE: BLRE-07-23-8186 Arvid and Janet Johnson Addition is now UruOg{ REVIEW DZRemo eftng From: Colleen Wirth <cwirth @ga rfield-county.com > Sent: Thursday, July 27,2023 3:19 PM To: carrie dzremodeling.com <carrie@dzremodeling.com>; dalerdesign@yahoo.com Subiect: BLRE-07-23-8L86 Arvid and Janet Johnson Addition is now UNDER REVIEW BLRE-O7-23-9t86 Arvid and Janet Johnson Addition Courtesy Message for Carrie DZ Remodeling and Daler Design Team: l'm completing the code review for the Johnson Addition at 471CR LL2 outside Carbondale and have some questions. QUESTIONS What is the existing home's site elevation in feet above sea level? 6857' What is the structural engineer of record's proposed Pf = ROOF SNOWLOAD for the addition? 40 Psf What is the structural engineer of record's foundation design assumed soil bearing capacity? We've assumed 1500 psf according to IRC presumptive limits 3.a. ls there an available soils investigation report from a geotechnical engineer? lF SO, could you please email copy to me at cwirth@garfield-countv'com. What is the structural engineer of record's anticipated frost depth for foundation work? 36" up to 8000 ft May we confirm, the proposed addition is designed in accordance with the 2015 International Residential Code and Garfield County's recently adopted 20L8 lnternational Energy Conservatlon 1.. 2. 3. 4 5 CorJe? Yes 6. Pursuant to the 20L8 lnternational Energy Conservation Code, resldentlal Chapter 5 Exlsting BuikJirrg Additions: I 6.a. What ncw hot wotcr hcating syctcms will bc addcd? IBC l ggk BTU Combo BoilerANH 6.b. What new / replaced mechanical boiler, infloor radiant heat tubing, baseboard heating, HVAC, forced air furnace, air-conditioning, whole-house ventilation will be intrt¡duced with this 1,600 + sq ft addition? Radiant in floor heat with above boiler, and a Mitsubishi wall-mount AC unit (spec TBD) 6.c. Will existing heating / cooling systems for the original residential living footprint remain in service and untouched? ttlo changes to existing 6.d. What skvlieht and window / door fenestration U-factors will vou inst-all in the new addi_tion?,¡All ./ w,ndowswir¡ beo.so-c'.{uracto, Ce? ffijþ íÍþ2./,2 aVfudr¿/ 6.e. Willthe residentigfadÌtition have programmableihermostats installed? No, standard thernrostat with the radiant heat 6.f. Where new furnaces, boilers / side arms are installed, what efficiency levels will be purchased and installed? Will advise when I hear back from my plumber. fr'e/d rl*tfr4 6.9. What type or efficiency level lighting will be installed in the rievù addinorl?/{,0% LED lighting, design/fixtures TBD 6.h. ls there any further detail or comments to be aware of regarding energy efficiency for this project scope? At this time, no resubmission of existing plan pages are required nor requested at this time. Your prepared written replies are welcome to be sent by emailfo rmat to me at cwirth@ earfield- countV.com. Follow up responses may be photocopied and stapled to your issued FIELD and OFFICE COPY of plans. Thanks for your efforts on the Johnson Addition, I look forward to seeing this project move forward, Colleen W¡rth Building Plans Examiner Garfield County Community Development 108 8th Street, Suite 401 (970) 945-1377 ext 1610 cwirth @ea rfield-countv.com d¿t? /€Ø /bWdh,nræ 4Ðoe3-,f ø", at t1*r¿a 2 /ry4;o-. RESIDEI,ITIAL ENERGY EFFICIENCY R402.X"1 Vapor retarder. Wall assemblies in the build- ing thermal envelope shall comply with the vapor retarder requirements of Section R702.7 of the InternationøI Resi- deitial Code or Section 1404.3 of t}ne Internatiornl Build- ing Code, as applicable. R402.1.2 trnsulation and fenestnaúion crÍteria. The building thermal envelope shall meet the requirements of Table R402.1.2, based on the clímate zone specified in Chapter 3. R402.I.3 R-value computation. Insulation material used in layers, such as framing cavity insulntion ot continuous insulation, shall be summed to compute the corresponding component R-value. The manufacüJrer's settled À-value shall be used for blown-in insulation. Computed R-values shall not include an R-value for other building materials or air films. Where insulated siding is used for the purpose of complying with the continuous insulation requirements of Table R402.1.2, the manufacturer's labeled R-value for the insulated siding shall be reduced by R-0.6. R.402.1.4 U-factor alfernatÍve. An assembly with a U-fac- tor equal to or less than that specified in Table Ft402.1.4 shall be an alternative to the rt-value in Table R402.1..2. TAtsLE R4O2.1.2 INSULATIOñI AND FENESTRATION REOUIREMENTS BY COMPONENT" NR = Not Required. For SI: I foot = 304.8 mm. a. R-values are minimums. U-factors and SHGC are maximums. Where insulation is installed in a cavity that is less than the label or design thickness of the insulation, the installed rR-value of the insulation shall be not less than the À-value specified in the table. b. The fenestration U-factor column excludes sþlights. The SHGC column applies to all glazed fenesftation. Exception: In Climate Zones I through 3, sþlights shall be permitted to be excluded from glazed fenestra¡ion SHGC requirements provided that the SHGC for such skylights does not exceed 0.30. c. ,,10t13', means R- l0 continuous insulation on the interior o¡ exterior of the home or R- 13 cavity insulation on the interiol of the basement wall. "l1/lg- means R-15 continuous insulation on tlre interior or exterior ofthe home or R-19 cavity insulation at tÍe interior of the basement wall. Alærnatively' compliance with .,15/19" shall be R-13 cavity insulation on the inte¡ior ofthe basement wall plus R-5 continuous insulation on the interior o¡ exterior ofthe home. d. R-5 insulation sha¡ be provided under the fi¡ll slab area of a heated slab in addition to the required slab edge insulation ]R-value for slabs. as indicated in the table. The slab edge insulation for heated slabs shall not be required to extend below the slab. e. There a¡e no SHGC requirements in the Marine Zone. f. Basementwallinsulationisnotrequiredinwarm-humidlocationsasdefinedbyFigureR30l.landTableR30l.l. g. Alternatively, insulation sufficieût to fill the framing cavity and providing not less than an it-value of R-19. tr. fn. fitrt value is cavity insulation, the second value is continuous insulation. Therefore, as an example, "13+5" means R-13 cavity insulation plus R-5 continuous insulation. I i. Mass walls shall be in accordance with Section R402.2.5. The second R-value applies where more than half of the insulation is on the interior of the mæs wal1' TAALE R402.1.4 EQUIVALÊNT U+ACTORS" CLIMATE ZONE FENESTRATION UfACTOR SKYLIGHT U#ACTOR CEILING U+ACTOR FRAME WALL U-FACTOR MASS WALL UfACTORb FLOOR U.FACTOR BASEMENT WALL U+ACTOR CRAWL SPACEWALL U.FACTOR I 0.50 o.75 0.035 0.084 0.197 0.064 0.360 0.477 2 0.40 o.65 0.030 0.084 0.165 0.064 0.360 0.477 3 0.32 o.55 0.030 0.060 0.098 0.047 0.091"0.136 4 except Marine a32 o.55 0.026 0.060 0.098 0.047 0.059 0.065 5 and Ma¡ine 4 0.30 o.55 0.026 0.060 0.082 0.033 0.050 0.055 6 0.30 o.55 0.026 0.045 0.060 0:033 0.050 0.055 7and8 0.30 o.55 0.026 0.045 0.057 0.028 0.050 0.055 , -- - a. Nonfenestratiofl.U-factors shall be obtained ftom'rneasurementteâloulation or an approved source. - - I b. Mass walls shall be in accordance with Section R402.2.5. Where more than half the insulation is on the interior, the mass wall U-factors shall not exceed 0.17- io Cli-ut eZone 7,0.14i¡ChmateZone 2,O-12 n Climate Zone 3, 0.087 in Climate Zone 4 except Marine, 0.065 in Climate Zone 5 and Marine 4, and 0'057 in Climate Zones 6 though 8. c. In warm-humid locations as defined by FigrÍe R301.1 and Table R301.1, the basement wall U-factor shall not exceed 0.360. l CLIMATE ZONE FENESTRATION I.AFACTORb SKYLIGHTb UfACTOR GLAZED FENESTRJITION $HGCb'' CEILING ÍÈVÅLUE wooD FRAME WALL P-VALUE MASS WALL F-VALUEI FLOOR F.VALUE BASEMENT" WALL B.VALUE SLABd P.VALUE & DEPTH CRAWL SPACE" WALL fr.VALUE 1 NR 0.75 o.z5 30 13 3t4 l3 0 0 0 2 0.40 0.65 0.25 3E 1.3 4!6 l3 0 0 0 -1 0.32 0.55 0.25 38 20 or 13+5o 8t13 t9 5113'0 5lt3 4 except Ma¡ine o.32 0.55 0.40 49 20 or 13+5h 8lt3 't9 ro t13 10,2 ft 10113 5 and Marine 4 0.30 0.s5 NR 49 20 or I 3+5h 13t17 30r 15t19 10, 2 ft 15119 ó 0.30 0.55 NR 49 20+5" or 13+1(}'tyzrJ 30Ë 15n9 10,4 fr t5n9 7and8 0.30 0.55 NR 49 20+5" or l3+lü 19t21 3EË t5/t9 10, 4 fr 15t19 R-30 2018 INTENNATIONAL ENERGY CONS€RVATION CODEO -¿