HomeMy WebLinkAboutFile Documents.205 E Durant Ave.0127-2023-BRES (14)4. Dimension Lumber:
a.Dimension lumber to be S-P-F no. 2 (or better) for joists & beams
and SPF stud grade (or better) for studs and plates. Doug.
Fir-Larch, or Hem-Fir, of same grade, are acceptable
substitutions.
b.All member sizes given on plan are nominal dimensions.
c. Wood lintels shall have a full 3" length of bearing at each end
unless otherwise noted.
d.All nailing shall conform to IBC table 2304.10.1 "Fastening
Schedule" unless otherwise noted on the plans.
e.Spacing of bridging for floor and roof joists shall not exceed 8' or 6
times the nominal joist depth (whichever is greater).
f.Double all joists under parallel partitions.
g.All wood connectors shall be by "USP lumber connectors" or
"Simpson Strong-Tie". All joists and beams not bearing on a
supporting member shall be framed with an appropriate wood
connector.
6. Construction Procedure:
a.The structure shall be adequately braced and shored during
erection against wind and erection loads. Structural members are
designed for "in-place" loads.
b.Comply with all applicable city, county, state and federal laws,
including the Occupational Safety and Health Act (OSHA) and its
pursuant regulations.
c.The contract structural drawings and specifications represent the
finished structure. Unless otherwise noted, they do not indicate
the means or method of construction. Provide all measures
necessary to protect the structure, workmen or other persons
3. Laminated Veneer Lumber (LVL):
a.All LVL headers and beams shall have the following minimum
properties:
allowable bending stress,Fb = 2600 psi
allowable shear stress,Fv = 280 psi
modulus of elasticity,E = 1,800,000 psi
b.LVL members shall be one of the following:
"Microllam" by Trus-Joist Weyerhaeuser
"Versa-Lam" by Boise Cascade
"LP SolidStart" by Louisiana Pacific.
c.Oriented-strand or Parallel-strand, or other solid-fibered
engineered lumber products meeting the stress and elasticity
characteristics specified above.
GENERAL STRUCTURAL NOTES
1. Building Codes and Design References:
a.2021 IBC, International Building Code, 2021 Ed., International
Code Council as adopted for use by the City of Aspen, CO.
b.ASCE 7-16, Minimum Design Loads for Buildings and Other
Structures
c.AISC Steel Construction Manual, 14th Edition, American Institute
of Steel Construction, with AISC 360-10 Specification for
Structural Steel Buildings.
d.NDS 2015, National Design Specification for Wood Construction,
American Forest & Paper Association with the American Wood
Council.
2. Design Loads:
a.Risk Category, for Flood, Wind, Snow, Earthquake, and Ice
Loads: II
b.Flood Design Data
c.Wind Load Criteria
Design Wind Speed Vult = 90-mph
Wind Load Importance Factor I = 1
Wind Load Exposure B
Components and cladding pressures to be used for those parts
not specifically designed herein:
d.Snow Load Criteria
Mean Ground Elevation at site 7,955-ft
Ground Snow Load, for unbalanced snow:Pg = 100 psf
Snow Load Importance Factor Is = 1.0
Roof Snow Load Pf = 77 psf
Drift as Required by ASCE 7-16, or refer to diagrams on drawings
e.Live Loads:
residential floor 15* + 40 psf
corridors and stairs 100 psf
5. Nails and Wood Screws:
a.Not all nails are created equal. Shear values on these drawings
are calculated using common, smooth shank, standard nails with
a round head centered on the nail shaft.
b.Box nails, sinker nails, and many types of coated nails are lighter
and thinner than a common nail of the same pennyweight. Match
the core diameter of these nails to the common nail for an
equivalent strength.
Common; Smooth Shanked Standard Nails
Penny Size 6d 8d 10d 12d 16d
Diameter 0.113"0.131"0.148"0.148"0.162"
Sinker Equivalent 8d 12d 16d 16d 20d
Box Equivalent 8d 16d 20d 20d 40d
Wood Screw Eq.#6 #8 #10 #10 #12
Ring-Shank Match common nail diameters,
ignore pennyweight
Cooler Nails
(Vinyl Coated)
Match common nail diameters,
pennyweights vary
Spiral or Ardox Not allowed for structural
applications
Stainless Steel Not allowed for structural
applications
Phosphate Not allowed for structural
applications
Galvanized Required for "Green" treated lumber,
match common nail diameters
connector.
h.Wood joists shall bear on the full width of supporting members
(stud walls, beams, etc.) unless noted otherwise.
i.Provide solid blocking below all jamb/trimmer/cripple studs (typical
at all floors).
j.All foundation plates, sills and sleepers on concrete slab, which is
in direct contact with earth, and sills which rest on concrete or
masonry foundation walls, shall be treated wood or foundation
redwood.
k.For all wood treated with preservatives other than CCA,
connectors and fasteners must be coated with one of the
following:
1.Batch/post hot dipped galvanized per ASTM A123 for
connectors and ASTM A153 for fasteners.
2.Mechanically galvanized per ASTM A695, class 55 or
greater.
3.Triple zinc g185 hot-dip galvanized per ASTM A653 or
equal.
necessary to protect the structure, workmen or other persons
during construction. Such measures shall include, but are not
limited to bracing, shoring for construction equipment, shoring for
the building, shoring for earth banks, forms, scaffolding, planking,
safety nets, support and bracing for cranes and gin poles, etc.
d.Engage properly qualified persons to determine where and how
temporary precautionary measures shall be used and inspect
same in the field. Observation visits to the site by the engineer's
field representative shall not include inspection of the above items.
e.Supervise and direct the work so as to maintain sole responsibility
for all construction means, methods, techniques, sequences and
procedures. As a part of this responsibility, retain the services of a
licensed structural engineer to design and supervise any
scaffolding for workmen, and all shoring of forms and elements of
the construction.
430 Main Street
Cañon City, CO 81212
719.430.5333
www.3rocksengineering.com
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DRAWN BY:AH
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DATE: 09/18/2023
NOTES
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Existing Doors
to remain
Bedroom
Primary Bedroom
Family Room
Kitchen
Load bearing walls
Load bearing walls
Steel beams below
Steel beams below
2 Jack, 2 King studs
(2x4 studs)
3 12"x 912" LVL
Shore during construction
1150 lbs/ft capacity
Form door pocket
on inside
1 trim, 1 king stud
1 hr fire rated separation
or exterior walls at unit
perimeter DO NOT DISTURB
HATCHED WALLS
Fb= 2750psi
1
S2Scale: 1/4" = 1'-0"
Unit 1I Floor Plan
(2)2x6
(2
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2
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framing direction both levels above
430 Main Street
Cañon City, CO 81212
719.430.5333
www.3rocksengineering.com
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DATE: 09/18/2023
FLOOR PLAN
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S3Scale: 1/4" = 1'-0"
Modified Floor Plan
(2)2x6
(2
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new 2x10 headernew 2x10 header new 2x10 sister
new 2x10 header
new 2x10 sister
new 2x10 sister
4'
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shore existing
joists prior to
cutting!
new 2x10 sister use LU210 to attach the
2x10 header to the
sister, and the cut joist
to the header.
flush framed
(10)16d nails at 8" o.c
&16d nails 1ft o.c staggered
existing
behind
joist directly bears on
the bearing wall,
opposite end
2
S3Scale: 1/2" = 1'-0"
Detail
430 Main Street
Cañon City, CO 81212
719.430.5333
www.3rocksengineering.com
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QA/QC:----
DRAWN BY:AH
PRJ # 23.141
DATE: 09/18/2023
MODIFIED FLOOR PLAN
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4/17/24 FRAMING REVISION
5/15/24 HVAC OPENINGS
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