HomeMy WebLinkAboutUpdated Foundation DesignDave Argo
From: Matt Monger <monger20@sopris.net>
Sent: Friday, January 22, 2021 11:34 AM
To: Dave Argo
Cc: Mike Bucchin; Lindsay Krol
Subject: [External] Silver Town Structures - Pinyon Mesa Lots 71, 72 & 73
Attachments: eS4PM73 Soils update.pdf; eS4PM72 Soils Update.pdf; eS4PM71 Soils update.pdf
Dave,
We apologize for the inconvenience but the soil design values for the projects mentioned above were not correct per
the structural design performed by Silver Town Structures. Please see attached updated structural drawings per your
request. If you have any questions please feel free to call Hein or myself & I hope you have a good weekend.
MM
Silver Town Structures
Matt Monger
970-355-9169
monger20@sopris.net
1
STRUCTURAL GENERAL NOTES & SPECIFICATIONS
DESIGN. DATA:
A DESIGN LIVE LOADS
L Basic Roof Snow 40 PSF 4. Garage
! ae iMmilagl Dews 40 PSF S Wind
3. Decks 40 PSF L Warm
G SWN ClNIET
Internatonal Residential Cade, (IRC), 2015
with the International Building Code, (IBC), 2015 for Special Inspection
American Concrete Institute Building Cade (ACI 310-14)
American Inslnrste of Steel Construction. Manual of Steel Construction (AISC 9th Edition)
American Institute of Timber Construction, Timber Construction Manual (AITC 5th Edition)
National Design Specifications for Woad Construction (4052014)
40 PSF
115 mph, Exposure B
Zone C
GFIERQL;
1 Any changes to the contract drawings shall be submitted to the structural engineer for approval
2 All dimensions and details on structural drawings shall be verified against the architectural drawings and any discrepancies shall be brought
to the attention of the architect prior to fabrication or construction Details an the structural drawings are typical. DO NOTSCAIE DRAWINGS
3 All openings Through the structural system shall be approved by the Engineer.
4 Contractor shall provide all necessary temporary bracing,shoring, guying or other means In prevent excessive stresses and to holdlhe
structural elements In place during construction.
5 The contract structural drawings and specifications represent the finished structure They do not Indicate the method of construction. The
or shall provide act measures necessary to protect the structure during construction. Such measures shall Include, hut ate not limited
to bracing, shoring for loads due to construction equipment and protection of existing structures Observation visits to the site by the
structural engineer shall not include inspection of the above items nor vnll the structural engineer be responsible far the contractor's means,
methods, techniques, sequences for procedure of construction, or the safety precautions and programs incident thereto
6 Options are for the convenience of the contractor He shall be responsible for all changes necessary H he chooses an option and shall
coordinate alldevils, The cost of additional engineering work necessitated by selection of an option shall be bornebythe contractor.
7 Any engineering design provided by others end submitted for review shall bear the seal and signature of an engineer registered in Colorado
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9. Where required construction details are not shown Or noted on these plans the contractor shall notify the engineer and the engineer shall
provide sufficient details for the work to proceed.
10 Construction materials shall be spread out if placed on framed construction. Load shall not exceed the design live load per square foot
11 Shop drawings shall be submitted to the architect for all structural items The Engineers review is intended only as an aid to the contractor
far obtaining correct shop drawings Responsibility for correctness shall rest with the contractor The contractor shall review all shop drawing
prior tosubmittal Items not in accordance with the contract documents shall be gagged upon his review. The shop drawing do not replace
the original contract drawings. It is the contractors responsibility to make sure items are constructed to the original drawings The adequacy
of engineering designs and layaul performed by others rests wdth the designing or submitting authority.
STRUCTURAL WOOD FRAMING:
A DIMENSIONAL LUMBER
All woad members shall be as described in the 2001 edition of the "National design Specifications for Wood Construction" by the National
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1. Unless otherwise noted on the drawings, woad framing members shall be Douglas Fir/Larch, Grade d2 or better. Redwood members
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2 Sixes shown are nominal, enepl when noted as RC (Rough Cut) they are full dimensions.
3 All woad members attached to concrete or masonry shall be redwood or strandguard engineered lumber.
4 Block all joists and rafters per the I RC
FASTENERS ANO CONNECTORS
Alternate fasteners and connectors to those listed below, which have IC B O. approval, may he used with approval by the Engineer.
1 Connectors shown an the plans are manufactured by the Simpson Strong -Tie Company, Inc Connectors by other manufactures shall
be deemed as equvavalenl If their rated capacity Is equal to or greater than that of the connector specified. Fallow manufacturer's
recommendations for installation of connectors
2 All timber nailing and connections shall conform to the IRC and AITC
3 Bolts for wood member connections shall be 3/4" diameter, ASTM A307 with a minimum 11/2" washer at each end (unless noted
olher@se).
4. Self -drilling fasteners for the attachment to structural steel shall be "Teks"fasteners as manufactured by Buildea
G PLYWOOD SHEATHING
Plywood sheathing for roofs, floors and exterior shear walls shall be APA Grade -Trademarked C-O, Exposure 1, unless otherwise noted.
1 Roof Diaphragms (240 pll) shall be 5/B', APA rated sheathing, 40/20 place with B'-0' dimension perpendicular to the joist, rafter or
truss span End)olsts shall be staggered. Attach plywood at edges with Id nails at 6"0C and at Intermediate supports with Bd nails at
12"OC
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3 Typical Exlerfor Wall Diaphragms (1110 pit 252 p11 wind) shall be 1/2",APA rated sheathing, 24/0 with end joins staggered Studs shall
be 16" 0 G and sheathed full height Attach plywood at edger with gel nails at 6" O.C. and at intermediate supports with Lid nails at B"
D. GLUE LAMINATED BEAMS Laminated member shall be designed and fabricated in accordance with 'The Standard Specifications for the
Design and Fabrication of Structural Glue Laminated Lumber" published by the AITC and the appropriate Lumber Producers' Association
1 Use exterior glue for all exposed laminated members.
2 All members e1posedlo weather shall receive one coat of end sealer al trimmed ends. seal all exposed surlaceswdh sealer coat as
soon as practical after erection
3 Appearance grade shall he In accordance with the architectural drawing,.
4 H beam Is cantilevered and the cantilever is greater than one-lhlyd of the back span. Install beam "TOP" down
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E MICRO -LAM BEAMS
Micro laminated members shall be designed and fabricated to accordance with the "National Research Boardand the "National Design
Spectirati0ns for Woad"
1 Mvr,W rand suer.nkr dry condttfons of use required shall be as follows:
F1=2600 psi Fv=2B5 psi Fc)perp)= 750 psi E=1 BEE psi
2 Install mien -laminated members In accordance with the manufacturer's recommendation.
3 Holes, cuts, or notches not previously approved by the engineer or the manufacturer shall not be made
4 Micro -laminated lumber is marked on the drawings as "ML' and shall be 13/4" wide. unless noted otherwise.
F. FABRICATED WOOL/JOISTS (I -Series)
-series fabricated joists with structural r.md Wes end MFI•ae4C webs called for on the 4 w.sc, (T11/210, T11/360, T11/560) areas
manufactured by the Trus-loisl Corp.. 1.1.1y MAP 441 14RRrs maybe used IT the 640011 r. deflection is equal to or less Than that
of the lout specified for the particular span and spacing and when authorised by the Architect/Engineer.
1 Fabricated wood joists shall be In accordance wish she manufacturer's recommendations.
2 Supply all plates, blocking. bridging, bracing, stiffeners and other related items as recommended by the manufacturer,
G. PRE -FABRICATED TRUSSES
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1 Truss manufacturer shall be a member of the Truss Plate Institute (TPI) and the Component Manufacturer: Council
2 Shop drawings shall be supplied to detail each truss type, truss layout, bracing and any applicable connections with hangers related to
truss to truss cannmtlons
3 Supply all plates, blocking, bridging, bracing, stiffeners and other related gems as recommended by the manufacturer
CONCRETE:
A CONCRETE REQUIREMENTS
Concrete has been designed and shall he constructed in accordance wish the latest editions of the
American Concrete Institute Building Code, ACI31B and Specifications for Structural Concrete for Buildings, ACI
301. Provide hot or cold weather protection per ACI 305& 306
1 Concrete shall have a minimum compressive strength alga days al:
Walls & footings 3000 psi
Slabs 3020 psi
2 Provide Type II cement throughout with 4%air entrainment.
3 Mechanically@nate concrete
4. No admixtures shall be used without approval by the engineer.
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6 Donat place pipes, ducts or chases In the structural concrete without the approval of the engineer
7. Thoroughly clean all case and construction joints prior to placing concrete in adjacent pour.
8 Concrete shall not be In contact with aluminum.
B REINFORCING
Detailing,fabrication, and erection of reinforcing steel bars shall comply with the ACI Manual of Standard
Practice for Detailing Reinforced Concrete Structures ACI 315.
1 Reinforcing bars shall be ASTM A615-Grade 60
2 Welded wire fabric shall conform to ASTM AIRS Furnish to Rat sheets only.
3 Concrete protection for reinforcement:
Cast against and permanently exposed to earth - 3 in
Exposed to earth or wealher._,_ M6411B bar.- 2 in
4345 bar_11/2 in
Not exposed to earth or weather.. slabs & wells._ 3/4 in
beams & cols-11/2 in.
4 Reinforcing lap splices shall be a minimum of 36 bar diameters unless noted otherwise lap yore fabric
reinforcement one full mesh plus 2" at sides and ends and wire together
9. Splices in horizontal beams and walls shall occur at midspan for top bars and over supports for bottom
bars.
A D..1.24, sre1a4d lwirLNWY urr) wr0.0 esl'ONV I*1 11af WRY
J ProNde corner bars of equal size and spacing around all corners
B Provide 2-g5 bars with a minimum of 2-0" projection beyond the sides of all openings in walls, beams
and slabs Provide 145 1 4'-0" diagonally al all re-entrant corners of slabs
9 ProNde accessories necessary to properly support reinforcing at the positions shown on the plans
10 Reinfm ring spacing are maximum on center and all reinforcing Is coninuous, unless noted otherwise
C SLABS
1 Provide control joints at 12-0" max spacing or as shown on the plans
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A GENERAL The foundation design Was based on sails tnvestigatlan by Kumar & Associates, Inc. Project
via. 19-7-221.01, dated August 10, 2020
Maximum allowable bearing pressure - 1,500 psf
NIRIEIIA pressure -Active 55 pcf
R IltYASW
1 Contractor shall provide all necessary sheeting, shoring and bracing where required to properly and safely
complete the work
2 Avoid excessive wetting or drying of the foundation excavation during mnshuelion Keep excavations
reasonably free of water at all time and completely free of wale. during placement of concrete.
G BEARING REQUIREMENTS
1 Footings shall bear anal least 3 feet of compacted structural fill&below the36" frost depth required by the soils engineer Any
dlscrepanclm wHh the fooling elevations shown an the plans shall he brought to the attention of
the engineer.
2 Building shall be founded on continuous concrete spread footings placed on undisturbed natural son
D. GENERAL REQUIREMENTS
1. Center foundations under columns and wane unless noted otherwise.
2 ProNde foundation ventilation in crawl space areas as required by the I.RC.
3 Backfill an walls with fill on both sldn shall he compacted in -equal lifts each side of wall Walls backfilled
on e side only shall have all supporting slabs. permanent framing or temporary bracing in place prior to
placement of the backfill (unless noted otherwise on plans).
STRUCTURAL STEEL:
A S(WUCTYRAL STILL
Structural steel shall be detailed, fabricated and erected in accordance with latest provisions of the AISC Manual of Steel Construction and
AISC Code of Standard Practice Use welders meeting the requirements of the ARTS Standard Qualification Procedure Comply oath AWS
011 Structural Welding Code
1 All steel shall conform to ASTM A36 except beams shall be ASTM A992 Grade 50 and tube columns which shall conform to ASTM A500(GR
B) and pipe shapes which shall .orator,. to ASTRA A53 (Gr. B)
2 Bolts shall conform to ASTM ADM Anchor bolls shall conform to ASTM A307. Bolt sire shall be 3/4" diameter unless noted otherwise
Installation shall be in accordance with AISC Specifications for Structural Joints Using ASTM A325 or A490 Bolts,19Ja
3 All welds shall be made with ETOXK electrodes
4 Prime all steel with approved primer paint to exposed bolts. welds. and abraded shop paint areas
5 All column base plates shall have 1"minimum gout to provide continuous bearing
B GROUT AND ANCHOR BOLTS
1 Dry pack or groin shall be shrink resistant Embeco 153 or equivalent.
2 Expansion bolls shall be Simpson "Wedge -AIL" or approved wedge type, Installed In accordance wilh the manufacturer's requirements
3 Headed anchor studs (H D.A S) shall be attached to structural steel with equipment approved by the stud manufacturer according to the
stud manufacturer's recommendations. 4, Anchor bolts embedded in concrete shall be placed with setting templates S location and
coordination of anchor bolt placement shall be the responsibility of the steel fabricator Steel fabricator shall supply anchor hole setting Plan
C STEEL CONNECTIONS
1. ProNde bolted connections for steel beams per Part 4 and Part 5 of the ABC Manual of Steel Construction. Euepl where otherwise shown,
pIa4I.1 a...l -. In elm:. hunk e.eWSore.%s1111r seal wiglrewl.ed capacity of the member.
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TREATED OO6 SILL W/ 1/tON1a
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B4 H0RI2. @ 1'-6" MAX.
114x L@ 1'-0" VERT.
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in PLAN
246 TREATED PLATE W/ 1/2"0010" EXP.
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USE 1 BOLT EACH 510E OF COLUMN
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1EE PLAN
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6
T.O. FTNG. n
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/ DRAW ES R SUNS MIPMI
COMPARED STR FILL
PER SOILS REPORT
TO WALL OR COLUMN
PER PLAN
PEN PLAN
CIMAPAL11L STR FILL
PEN Salts REPORT
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0
0
0
J
FINISHED CONC
3.4111 !MC
B" 5Q PIER
TOP FTNG
SEE PLAN
SEE PLAN
3'-O' COMPARED
FILL PER SOILS REPORT
W1300 POST PER PLAN
ARCH CBS2 POST BASE W/ 21'
N5 BAR EPDXIED 1r IN1O CONC
& WOOD COLUMN
BOND BREAK
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SEE PLAN
SOIL MINN
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3'-04 COMRACEEOSTR FILL
- PERSOIIS REPORT
44 CONE sue
SEE PLAN
• COMPARro sot
RIPER SOILS REPORT
04 HOWL PS'.IN47L
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TYP. WALL & FTG. STEP
3
TYP. WOOD BM. POCKET
4
a EVts!O.'IS
General Notes
and Details
TDB NUMBER
20-519
DATE
12/24/20 PERMIT SET
DRAWN BY
MAM
CHECKED BY
HLB
DRAWING NUMBER
S4