HomeMy WebLinkAboutModular Foundation Design ReportDecember 11, 2014
Ms . Lois Ryden
3869 CR 245
New Castle, CO
Re: Modular Foundation Design
SGM Project No. 2014-487.001
Dear Ms. Ryden :
6 SGM
www.sgm-inc .com
Per your request, we have prepared a foundation design on the residence located at the above
address. We have visited the site, are in receipt of the Geotechnical Report #114 495A
prepared by HP Geotech , and have prepared a design in conformance with the report and the
2009 International Residential Code. We understand the modular home is on site, and awaits
the foundation to be constructed.
In discussions with you, the Report presents two options for foundation design : a helical pier
foundation , and a design incorporating a minimum dead load . Swell/consolidation testing done
as indicated in the report indicate moderate swell potential (1 .75%) if the soils become wetted.
After discussion, you agreed that the minimum dead load design would be used, based on the
plan that all excess moisture be kept away from the foundation by properly grading the final
profile away from the residence, providing a subsurface perimeter dra in around the foundation,
and using appropriate gutters and downspouts to move stormwater away from the foundation .
Plans and specifications adequate to construct the foundation are attached. Should you or your
Contractor have any further questions, please call me at 384-9037 .
Sincerely, ~Lf.e-:f-? SGM f:J. PEA'E
Attachments:
Structural General Notes
Foundation Plan
Foundation Sections & Details
GLENWOOD SPRINGS 118 West Sixth St, Suite 200 I Glenwood Springs, CO 81601 I 970. 945. l 004
6 SGM
---------------------------www . sg m-i nc. com
Structural General Notes:
1. Design and construction shall be in accordance with the requirements of the
International Residential Code, 2003 Edition (2003 IRC). Loads used in design
are as follows:
-Roof LL = 40 psf
-Roof DL = 1 O psf
-Floor LL = 40 psf
-Wind pressure based on 90 mph, 3 sec gust, Exposure B
-Seismic Design Category C
2. The foundation design was prepared in accordance with the geotechnical report
by HP Geotech, Inc., dated November 28, 2014, job number 114 495A. Footings
were designed for a maximum allowable bearing pressure of 2500 psf and a
minimum dead load pressure of 800 psf. Minimum footing widths = 16" for
continuous footings and 24" for isolated pads. Footings shall bear on
undisturbed native soils a minimum of 36" below adjacent finished grade.
Subsurface drainage, excavation , backfilling , surface dra inage, and compaction
shall be done in accordance with the recommendations in the report.
3 . Concrete shall reach a minimum compressive strength of 3000 psi in 28 days. All
exterior slabs and walls shall have a minimum of 5% entrained air. Reinforcing
shall be conformance with ASTM A615, Grade 60. All reinforcing shall be
secured in place prior to concrete placement. Horizontal reinforcing in walls and
footings shall be made continuous around corners by "L" bars, or by shop
bending . Lap splices shall be a minimum of 36 bar diameters. Reinforcement
shall be made continuous through all wall construction joints and steps. All slabs-
on-grade shall be p rovided with sawcut control joints 1" deep at 15 ft on center
each way, or poured with 1.5 lbs/cu. yd. Fibermesh in the mix. It is the
responsibility of the owner I contractor to coordinate all embeds, penetrations,
openings and to verify all plan dimensions prior to forming and placing concrete.
Insulated concrete forms (ICF) shall be installed in accordance with the Advance
Foam Plastics engineered wall system manufacturer.
4 . Wood framing shall be connected in accordance with IRC unless noted
otherwise.
5. Dimensions are to edge of framing or concrete , unless noted otherwise. All
discrepancies shall be brought to the attention of the Engineer and Owner prior
to construction.
6. It is the responsibility of the Contractor to coordinate construction with all
equipment and utilities, and verify sizes and locations before construction.
GLENWOOD SPRINGS 118 West Sixth St, Suite 200 I Glenwood Springs, CO 81601 ] 970. 945 .1004
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GLENWOOD SPRINGS 118 W. 6TH ST., STE. 200 GLENWOOD SPRINGS, CO 81601 970 -945-1 004 FX: 970 -945 -5948
ASPEN P.O. 80X 2155 ASPEN, CO 81612 970-925 -6727 FX: 970·925·4157
GUNNISON 103 W. TOMICH! AVE ., STE . A GUNNISON, CO 81230 970-641-5355 FX : 970 -641 -5358
MEEKER 320 3RD ST . MEEKER, CO 81641 970 -878 -5180 FX : 970 ·878 -4181
GRANDJUNCTION 2768 COMPASS DR ., STE . 102 GRAND JUNCTION, CO 81506 970-245 ·2571 FX: 970 -245-2871
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GLENWOOD SPRINGS l l 8 W . 6TH ST., STE. 200 GLENWOOD SPRINGS, CO 81601 970 -945-1004 FX: 970 -945 -5948
ASPEN P.O . BOX 2155 ASPEN, CO 8 T 612 970-925-6727 FX : 970-925-41 57
GUNNISON 103 W. TOMICHI AVE ., STE . A GUNNISON, CO 81230 970-641 -5355 FX : 970 ·641 -5358
MEEKER 320 3RO ST . M EEKER , CO 81641 970-878-5180 FX : 970-878 -418 1
GRANDJUNCTION 2 7 68 COMPASS DR ., STE . 102 GRAND JUNCTION, CO 81506 970 -245 -2571 FX: 970·245 -2871
SECTION 07 3113
ASPHALT SHINGLE ROOFING SYSTEM
Atlas Roofing Corporation asphalt/fiberglass shingles.
This section is based on the Atlas Roofing Corporation line of asphalt fiberglass shingles. Atlas bas been
the industry leader in proven innovations in design and shingle technology and the introduction of a full
line of designer shingle colors and shapes.
For more information on Atlas Roofing Corporation products and availability, or for the name of your loc-
al Atlas Roofing Corporation representative, contact or write: Atlas Roofing Corporation, 2000 RiverEdge
Parkway Suite 800, Atlanta, GA 30328. Or www.atlasroofing.com
This three-part specification must be edited to delete shingle types and styles not required on a particular
proj cct. Also, you may delete the "NOTES" below once editing is completed.
Part 1 General
1.01 section includes:
• A.. Granule surfaced shingle roofing.
• B. Underlayment, eave, valley and ridge protection.
• C. Metal flashing.
***NOTE: REFER TO DIVISIONS 6 AND 7 FOR RELATED SECTIONS REQUIREMENTS***
***NOTE: CONTACT ATLAS ROOFING CORPORATION FOR LIST OF RELATED REFER-
ENCES***
1.02 Submittals
• A.. Submit under provision of Section L__J.
• B. Product Data: Provide data indicating material characteristics, performance criteria, limitations
andL__J.
• C. Manufacturer's Installation Instructions: Indicate preparation and installation procedures. Install-
ation of shingles, underlayment, flashing. fasteners, vents, and other roof accessories shall be in
accordance with instructions published by Atlas Roofing Corporation.
• D.Manufacturer's Certificate of Compliance: Provide Certificate of Compliance indicating that the
asphalt shingles made in normal production meet or exceed the requirements. of: 7 ° 1. Class A Fire Resistance.
0 2. ASTM D 3161 Test method for wind resistance of asphalt shingles.
• E. Shop Drawings: Indicate L__J metal flashing. jointing methods and locations, fastening meth-
ods and locations and installation details, as needed.
1.03 Regulatory requirements
• A. Provide certificate of compliance from shingle manufacturer for ASTM, FM and UL Standards,
indicating conformance of specified products.
1.04 Environmental requirement
r
• A. Do not install Atlas Shingles or WeatherMaster Granular Underlayment when (ambient) (wind
chill) temperatures are below (45) degrees Fahrenheit. Fasten the ice and water protection in
place with blind nailing at the overlaps at 6" O.C. if it does not adhere immediately to the deck.
1.05 Extra Materials
• A. Furnish under provisions of section (_).
• B. Provide L_) sq ft of extra shingles (of each color specified).
***NOTE: CONTACT ATLAS ROOFING CORPORATION FOR SHINGLE WARRANTY FOR
SPECIFIC PRODUCT(S) SPECIFIED***
PART 2 PRODUCTS
2.01 ASPHALT SHINGLE
• A.Acceptable products
o 1. GlassMaster®
***NOTE: Number after product name indicates warranty years***
2.02 Asphalt Shingle/CHARACTERISTICS
• A. fiberglass
0 1. GlassMaster:
(36" x 12" with 5° exposure)
• ASTM
D 7158, Class H Wmd Resistance, Passes at 150 mph
D 6381, Uplift Resistance
D 3018, Type I
D 3161, Type l, Class f', Tested at 110 mph
D 3462, As Manufactured f' E 108, Class A Fire Resistance
~·239~Class H Wmd Resistance, Passed at 150 mph
790, Class A Fire Resistance
• CAN/CSA-A123.5-M90
Florida Building Code Approved • FL 9792
Miami-Dade County Product Control Approved, Miami-Dade County, Florida, NOA No. 09-0114.01,
4/22/14
2.03 Sheet Materials
• A. Atlas Roofing Corporation WeatherMaster Granular Underlayment self-adhesive waterproofing
membrane is used as an underlayment for roof coverings. WeathcrMaster Ice & Water Underlay-
ment is made with SBS Modified Asphalt and is reinforced with a heavy glass fiber mat The
split, two piece peel-off backing material is a silicone coated polyethylene sheet for case of re-
moval. AS1M Dl 970 compliant.
• B. Underlayment: AS1M D226 Type (I or II), Asphalt saturated felt.
0 1. ATLAS #15 Spec Felt. AS1M D 4869 Type I or 'fype ID
0 2. ATLAS #30 Spec Felt. AS1M D 4869 Type II or IV
• C. Gorilla Guard -Wrinkle resistant glass reinforced underlayment felt AS1M D 6757.
• D. Summit Synthetic Underlayment -Woven polypropylene fabric with UV +water resistive coat-
ing. 6 months exposure, synthetic shingle underlaymenl ASTM D 6757
***SELECT ONE (l.)***
2.04 Accessories
• A. Nails: Standard round wire type roofing nails, corrosion resistant (hot dipped zinc coated steel}
(aluminum} (copper} (chromated steel) L_); nominal 3/8" head diameter; minimum; 11or12
gauge shank diameter; shank to be of sufficient length to penetrate 3/4" into solid wood, plywood,
or non-veneer wood decking, or 1/8" through the thickness of the decking.
• B. Asphalt Roof Cement: ASTM 04586. Asbestos free.
2.05 Flashing Materials
• A. Sheet Flashing: (ASTMA361) (ASTM B209) (ASTM B370) L_) to meet shingle manufac-
turer's requirements. Shall meet or exceed local building code requirements.
• B. Bituminous Paint: Acid and alkali resistant type; black color.
• C. Tmners Paint: (Red) (Green} (Brown} (__} color.
• D. Nails: Standard round wire type roofing nails, corrosion resistant (hot dipped zinc coated steel)
(aluminum) (copper) ( chromated steel) L_); nominal 3/8" head diameter; minimum 11 or 12
gauge shank diameter; shank to be of sufficient length to penetrate 3/4" into solid wood, plywood,
or non-veneer wood decking, or l/811 through the thickness of the decking.
2.06 Flashing Fabrication
• A. Form flashing (indicated on Drawings) to protect roofing materials from physical damage and to
shed water.
• B. Form sections square and accurate to profile, in maximum possible lengths, free from distortion
or defects detrimental to appearance or performance.
Part 3 Execution
3.01 Examination
• A. Verify existing site conditions under provisions of Section L__J.
• B. Verify that roof penetrations and plumbing stacks are in place and flashed to deck surface.
• C. Verify roof openings arc correctly framed prior to installing work of this section.
• D. Vepfy deck surfaces are dry, free of ridges, warps, or voids.
3.02 Roof Deck Preparation
• A. Follow shingle manufacturer's recommendations for acceptable roof deck materials.
• B. Broom clean deck: surfaces prior to the roof installation.
3.03 Installation -Eave Ice Dam Protection
• A. Place (eave edge) (and) (gable edge) metal flashing tight with fascia boards. Weather lap joints 3
inches and seal with roofing cement. Secure flange with nails spaced L..J inches o.c.
• B. Apply Atlas Roofing Corp. WeatherMaster Granular Underlayment Waterproofing Membrane, a
self-adhering, SBS rubberized asphalt membrane as eave protection in accordance with manufac-
turer's instructions.
• C. Extend eave protection membrane minimum (24) (48) (__)inches up the slope beyond interior
face of exterior wall.
3.04 Installation -Protective Underlayment
• A. When roof slope is between 2" and 411 per foot. install one layer ofWeatherMaster Granular Un-
derlayment. or two layers of ASTM 0226 TYPE L..J underlayment over areas not protected by
WeatherMaster Granular Underlayment at eave, with ends and edges weather lapped a minimum
(6) L..J inches. Stagger end laps between each consecutive layer. Nail in place.
• B. When roof slope is 4" per foot or greater, install one layer ASTM D226 TYPE L_J one layer of
WeatherMaster Granular Underlayment or underlayment perpendicular to slope of roof and lap
minimum (4) L_J inches over eave protection.
• C. Weather lap and seal watertight with plastic cement ASTM 4586 around items projecting
through or mounted on the roof.
3.05 Installation -valley protection
• A. For "Closed-Cut," "Woven," or "Open" valleys, first place one-ply ofWeatherMaster Granular
Undcrlaymcnt (___) minimum (36) L_J inches wide, centered over valleys. Lap joints minim-
um (6) {__) inches. Follow shingle and waterproofing membrane manufacturer's instructions.
3.06 Installation -Metal Flashing
• A. Weather lap joints minimum (3) {__) inches (and seal weather tight with plastic cement).
• B. Secure in place with nails at L_J inches o.c. Conceal fasteners.
• C. Seal work projecting through or mounted on roofing with asphalt roof cement (not required for
step flashing).
3.07 Installation -Asphalt Shingles
• A. Install shingles in accordance with manufacturer's instructions for the type of product and applic-
ation specified.
3.08 Field Quality Control
• A. Field inspection will be performed under provisions of Section L__J.
3.09 Protection of Finished Work
• A. Protect finished work under provisions of Section L__J.
• B. Do not permit traffic over finished roof surface.
END OF SECTION -2012