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Colleen Wirth
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Wh itesta r Bu i I d i n gs < i nfo@wh itesta rbu i I d i n gt.r"^, h/¿f/t_ €e_a/ e
Monday, March 20,2023 9:37 AM ,/
Colleen Wirth
Re: BUNCHMAN detached shop / garage - BLRE-02-23-8005
Table R403.3(1) insulation requirements (1).pdf
L. Willthis be a heated, conditioned building? Or unconditioned, cold storage only? Non-heated
structure with 4" roof & wall insulation (R-L3)
2. Willthere be any electric, natural gas or LP propane supplied to the proposed building? Electric will be
supplied to the structure.
3. Will there be a water heater or plumbing water supply, dwv or finished (plumbing) fixtures) installed?
NONE ofthe above.
4. Will infloor radiant heat tubing, electric heat mat, and/or wall/ ceiling- mounted heater(s) be
installed? lf so, convey fuel type and location. NONE of the above.
5. /F the building is heated, THEN provide floor / wall / ceiling assembly cross section details and include
proposed insulation mater¡als and R-values. N/A
6. The building application form indicates property is served by an onsite wastewater treatment system
(OWTS). What is the approximate distance in feet between the proposed garage and the existing
septic tank and leach field area? Shown on submitted site plan, the structure will be constructed well
over 100+ feet East from the septic tank & leach field.
7. L2/L2 Edge of slab detail does not comply with Garfield County's requirements for frost
protection. We are concerned the slab will be inadequately protected from frost heave (We are
especially concerned with dimension "D" = L2, as we more typically see minimum "D" = 18 + and slab
insulation) Attached GarCo Bldg Reqts 20L5 PDF specifies a minimum 36 inches frost depth for site
locations below 8,000 ft elevation.
Please provide REVISED L2lt2 Edge of slab detail and include any proposed slab insulation. Upon
permit submission, we relayed that we would have a frost depth of 18" along with having the slab
insulated. I have attached the PDF previously relayed regardingthis.
8. This morning I consulted with Glenn Hartmann, Garfield County's Senior Planner and Floodplain
Manager. The SITE PLAN does not include enough information to verify and confirm the garage
structure complies with 100- year floodplain and 35-ft stream setback provisions. With some
research, Glenn was able to provide best available information c/o an historic floodplain study
prepared by Army Corp of Engineers (see attached PDF titled BUNCHMAN - Army Corp). While not
easy to read the study, we believe the future garage may fal in ZONE X outside the floodplain. To
verify and confirm compliance with zoning regulations, we request (2) COPIES of a REVISED SITE PLAN
be submitted, including:
8.4. NORTH ARROW and SCALE
8.8. Label existing/ proposed building structure(s)
8.C. Show location of existing sept¡c tank / leach field
8.D. Provide actual SITE ELEVATION in feet at the proposed new detached garage location
8.E. Labelthe COLORADO RIVER and show line representation of the required 35-ft minimum setback
from Typical and Ordinary High Water Mark per Garfield County LUDC, Section 7.203. We encourage
obtaining help of a licensed surveyor, professional engineer or other qualified consultant to provide
this information. (Through Glenn's historic knowledge he is aware of the property having a fairly
1
recent amended final plat. Recorded Reception 934361 (PDF attached)was prepared by a local land
surveyor Drake Consulting who may be able to assist the property owner in this effort.)
LF. To be certain the SITE PLAN can be accurately scaled and measured, we will need to obtain full
size PAPER COPIES delivered to Garfield County Community Development. Walk-in customers are
welcome to visit the front desk between 8:30 am - 4:00 pm weekdays. Please remit c/o BUNCHMAN
BLRE-02-23-8005, Attn: Colleen Wirth, Plans Examiner. Property owner will reach out to you directly
to address this as he has additional questions.
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Whitestar Metal Buildings
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On Mon, Mar 20, 2023 at 9:23 AM Whitestar Buildings <info@whitestarbuildinss.com> wrote
x
tÈll ¡nfo@whitestarbuildings.com
x
Forwarded message
From : Colleen Wirth <cwirth @ga rfield-cou ntv.com>
Date: Fri, Mar 77,2023 at 11:314M
Subject: BUNCHMAN detached shop / garage - BLRE-02-23-8005
To: info@whitestarbuildings.com <info@whitestarbuildings.com>, ACT Buildíng Systems
<engsu pport@actbu ildingsvstems.com>
2
FOUNDATIONS
INSULÀTION DETAIL
FI-ASHING PER SECTION R703.8
SLAB-ON-GROUNO FOUNDATION FLOOR
PER SECT¡ÔNS R403.1 AND R5O6INSULATION PROTECTION PËR SECTION R403.3.I
SLOPE F'NAL GRADE PER SECTION R4O3'3'?
12 IN. MAX"
12 lN. MlN.
NOMINAL4IN.AND VERTICAL WALL INSUALT¡ON'
WASHEÞ GRAVËL OR CRUSHED
STONE DRAINED PËR SECTION
R403,3,2 HORIZONTAL INSULATION"
HORIZONTAL INSULATION PLAN
-T
-l.
For SI: 1 inch = 25.4 mrn.
a. See T¿bIe R403.3(l) for required dimensions and Jt-values for vertical and horizont8l insuletion and minimum fooling depth.
F¡GURE R403.3(1)
INSULATION PLACEMENT FOR FBOST-PROTECTED FOOTINGS IN HEATED BUILDINGS
H
FOOTINGS IN HEATED BUILDINGS'
AIR FREEZING
INDEX
('F-days)b
MINIMUM FOOTING
OEPTH, D
(¡nches)
VERTICAL
,NSULATION
R-VALUEqd
HORIZONTAL INSULATION
R.VALUË.,'
HOHIZONTAL INSULATION OIMENSIONS
PER FIGURE 8403.3(1) (ilches)
Along ì¡valls Al corners A B c
1,500 or less 12 4.5 Not required Not required Not required Not required Not required
2,000 14 s.6 No[ required Not required Not required Not required Not required
2,500 l6 6.7 t.7 4.9 l2 L1 40
3,000 l6 7.8 6.5 8.6 12 24 40
3,500 r6 9.0 8.0 lt.2 24 30 60
4,000 16 10.r 10.5 t3. I 36 60
For SI: I inch = 25.4 mrn, oC = [{oÐ - 32y1.8.
a. Insulation requirements are ibr protechon agarnstfrost damage {n heâted builtlings. Grcater valucs rtray tre reqrúred lo Ìnccl energy conscrva[ioll standüds.
h. '\ee Figure R403.-1i.2) or Table R403.3(2) for Air Frecz.ing Inilex v¿ltrcs'
c. Insulution ¡¡r¡ileriuls shall provido the stûted mìnimum ft-v¡lues nnder long-term exposure to moist, bclow-ground conditions in freezing climares ?he
following jt-values shall b! used to derermine insulation thicknesses required for this application: Type II expanded polystyrene-2.4Å per incJr; 'l'ype lV
oxtrudeipolyrt¡,rsno 4.5i( por inch; Typo VI oxtrudod polyrlyrcnc 4.5n pcr inch; Typc lX cxpandcd polystyrcnc'3.2I1 pcr inch; Typc X cxtrudcd
polystyrcne-4.5R per inch,
d. Ve¡tical insulation shall be expanded polystyrene insulation or extruded polystyrene insulation.
I c. Horizontal insulation shall be expanded polysl,yrene ir¡sulatiuil Lrr eKtruded polystyrene itrsulation.
TABLE R403,3(1)
M¡NIMUM FOOTING DEPTH AND INSULATION REOUIREMENTS FOR FROST.PROTECTEO
FOUNDATION
PERIMETER
s2 2O'I5 INTERNATIONAL RESIDENTIAL CODE6