2603 Structural Calcs STRUCTURAL CALCULATIONS
FOR THE
SOUNDBUILT HOMES RESIDENTIAL PROJECT
Plan 2603
June 26, 2013
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Job No. : 12-034
Location: King County, Washington
SEGA Engineers,
Structural &Civil Consulting Engineers
22939 SE 292nd PL (360)886-1017
Black Diamond,WA 98010
Copyright 2013,SEGA Engineers
STATEMENT OF WORK
SEGA Engineers was asked to provide a lateral loads analysis, shear wall
design, review of major framing members and foundation, and drawing review for
a two story wood framed single family residence. The roof framing is both 2x
rafters and manufactured trusses, the floor framing is 2x dimensional or wood (-
joists, and the foundation is typical concrete strip footings with a crawl space.
The attached calculations are to be used as a `basic' submittal for several
potential building sites. The cover sheet should have an original signature in blue
ink over the seal. Application and use for individual lots or sub-divisions
shall be specifically identified by separate letter for each location. The
contractor assumes all responsibility and liability for sites not expressly reviewed
and approved.
SEGA Engineers will use that degree of care and skill ordinarily exercised under
similar circumstances by members of the engineering profession in this local. No
other warranty, either expressed or implied is made in connection with our
rending of professional services. For any dispute, claim, or action arising out of
this design, SEGA Engineers shall have liability limited to the amount of the total
fee received by SEGA Engineers for this submittal.
Questions regarding the attached should be addressed to SEGA Engineers.
Greg Thesenvitz, PE
SEGA Engineers
SEGA Engineers, Project Plan 2603
Structural&Civil Consulting Engineers
Job No. 12-034 By: GAT
22939 SE 292nd PL (360) 886-1017
Black Diamond, WA 98010 Checked Date: 06/26/13 Sht i
Design Criteria
International Building Code (IBC), 2012
LOADS
Roof
DL 15 psf
LL 25 psf
Floor
DL 10 psf
LL 40 psf
Wind
Risk Category II
Design Wind Speed 110 mph (V,,,t)
KZt 1.00
Exposure B
Seismic
Design Category D
SDS 1.00
Response Factor 6.5
CS= 0.154
Importance Factor 1.00
Soil
Allowable Bearing 1,500 psf
Copyright 2013,SEGA Engineers
SEGA Engineers, Project Plan 2603
Structural&Civil Consulting Engineers
Job No. 12-034 By: GAT
22939 SE 292nd PL (360) 886-1017
Black Diamond,WA 98010 Checked Date: 03/21/12 Sht 1
LOADS
ROOF
DL Roofing(Comp) 3.5 psf
'/p"CSB 1.8
2 x @ 24" 3.5
Insulation 1.1
5/8" GWB 2.8
Misc. 1.5
14.2 psf
LL Snow, Pt 25 psf (115% Load Duration)
Reduction, Cs 0.00 (Ct= 1.1, other surfaces)
5/12 pitch = 23 deg
Total Roof Load 39.2 psf
FLOOR
DL Flooring 0.5 psf
3/4" Plywood 2.3
2x12 @16"oc 3.3
5/8"GWB 2.8
Misc. 1.5
10.4 psf
LL Residential 40 psf
Total Floor Load 50.4 psf
DECKS
DL 2 x Decking 4.3 psf
2x10 @16"oc 2.8
Misc 1.5
8.6
LL Residential 40 psf
Total Deck Load 48.6 psf
WALLS
DL Siding 3.5
'/Z"Plywood 1.5 psf
2x6 @16" oc 1.7
Insul 0.6
'/Z"GWB 2.2
9.5 psf
Copyright 2012,SEGA Engineers
SEGA En ineers PROJECT
Structural & Civil Consulting Engineers
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Black Diamond, Washington 98010 CHECKED BY DATE Y ZI/j, SHEET 7 OF
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SEGA Engineers Project Plan 2603
Structural&Civil Consulting Engineers
Job No. 12-034 By: GAT
22939 SE 292nd PL (360)886-1017
Black Diamond,WA 98010 Checked Date: 06/26/13 Sht.
LATERAL LOADS - (Alternate ASD)
SEISMIC
Maximum Base Shear,V= F SoS W Eq. 12.14-11
R
where,
F= 1.1 Two-Story Building
SoS= 1.00 Ss = 1.5 Fa = 1.00 (Table 11.4-1, SS> 1.25)
R= 6.5 Table 12.14-1
W = Seismic Weight
For W:
W.ot= ( 40ft) ( 36ft) (16 psf)+ ( 2 ) ( 40ft+ 36ft) ( 4.0ft ) ( 9.5psf) = 29kips
Wryoor= (40ft) ( 42ft) (14 psf)+ ( 2 ) ( 40 ft+ 42ft ) ( 8.5 ft ) ( 9.5 psf) = 37 kips
W total = 66 kips
Design Base Shear ,V= ( .169 ) (66 kip ) = 11.1 kip
E = 11.1 kip_ = 7.9 kip
WIND
Design Wind Pressure, pg = X Kn p630 Eq. 28.6-1, Sect. 28.6.3
where,
= 1.00 0- 15 ft Exposure B Figure 28.6-1
= 1.00 20 ft
= 1.00 25 ft
= 1.00 30 ft
Kri= 1.00 Section 26.8
P30 = 17.7 psf 110 mph Figure 28.6-1 (ASD)
PU.15= ( 1.00 ) ( 1.00 ) (17.7 psf) = 17.70 psf (x 0.6= 10.62 psf)
P20 = ( 1.00 ) ( 1.00 ) (17.7 psf) = 17.70 psf (x 0.6= 10.62 psf)
P25 = ( 1.00 ) ( 1.00 ) (17.7 psf) = 17.70 psf (x 0.6= 10.62 psf)
P30 = ( 1.00 ) ( 1.00 ) (17.7 psf) = 17.70 psf (x 0.6= 10.62 psf)
Design Base Shear: (Wind)
V11b= ( 40ft) ( 10ft) (17.7 psf) + (40ft ) ( 5ft) (17.7 psf)
+ ( 40ft) ( 5ft ) (17.7 psf) + (40ft ) ( 1ft) (17.7 psf) =14.9 x 0.6 8.9 kips
V,jS= ( 44ft) ( 10ft) (17.7 psf) + (43ft) ( 5ft) (17.7psf)
+ ( 39ft) ( 5ft) (17.7 psf) + ( 29ft) ( 2ft ) (17.7 psf) =1 6.1 x 0.6 9.6 kips
Therefore, Wind Loads Govern for Lateral Design - Front/Back
Wind Loads Govern for Lateral Design-Side/Side
Copyright 2013,SEGA Engineers
SEGA Engineers PROJECT �Lp'.j -Z
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SEGA Engineers PROJECT PLAN 2603
Structural & Civil Consulting Engineers
22939 SE 292nd Place • Black Diamond, Washington 98010 JOB No. 12-034 FIGURED BY GAT T
(360) 886-1017•FAX 886-1016 Q Q
CHECKED BY DATE 03/21/12 SHEET 8 OF 8
SHEAR LUALL KEY PLAN
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