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Project: VALLEY HOME IMPROVEMENT- SIENKIEWICZ COLLAR TIES
David Vreeland, PE
Location: Collar Tie 1 ,, ) Vreeland Design Associates
Collar Tie 116 River Road o f
[2009 International Building Code(2005 NDS)] ','""' Leyden, MA 01337
1.51Nx 11.251Nx8.1 FT(7.1 + 1) @ 24 O.C.
#2 - Spruce- Pine -Fir - Dry Use StruCalc Version 8.0.112.0 9/24/2012 3:36:28 PM
1.5 x 5.5 Solid Sawn Lumber with minimum Ft = 575
Section Adequate By: 24.9%
Controlling Factor. Moment
DEFLECTIONS Center Right MATERIAL PROPERTIES
Live Load 0.05 IN L/1737 -0.02 IN 201076
Dead Load 0.02 in -0.01 in Base Values Adjusted
Total Load 0.07 IN L/1301 -0.03 IN 20806 Bending Stress: Fb = 875 psi Fb' = 855 psi
Live Load Deflection Criteria: L/360 Total Load Deflection Criteria: L/240 Cd =1.15 CI =0.85 CF =1.00
RAFTER REACTIONS Shear Stress: Fv = 135 psi Fv' = 155 psi
LOADS REACTIONS Cd =1.15
Lower Live Load @ B 324 plf 648 Ib Modulus of Elasticity: E = 1400 ksi E = 1400 ksi
Lower Dead Load B 109 Of 217 Ib Min. Mod. of Elasticity: E_min = 510 ksi E_min' = 510 ksi
Lower Total Load @ B 433 plf 865 Ib Comp. -- to Grain: Fc - 1 - = 425 psi Fc - = 425 psi
Collar Tie Tension 1326 Ib Controlling Moment: -1804 ft-lb
RAFTER SUPPORT DATA 4.043 Ft from left support of span 2 (Center Span)
B Created by combining all dead loads and live loads on span(s) 2
Bearing Length 1.36 in Controlling Shear: -604 Ib
RAFTER DATA Interior faLQ At a distance d from right support of span 2 (Center Span)
Span Length 7.1 ft 1 ft Created by combining all dead loads and live loads on span(s) 2, 3
Unbraced Length -Bottom 0 ft 0 ft Comparisons with required sections: Rea'd Provided
Rafter Pitch 6 :12 Section Modulus: 25.33 in3 31.64 in3
Collar Tie Location 2.02 ft Area (Shear): 5.83 in2 16.88 in2
Roof Duration Factor 1.15 Moment of Inertia (deflection): 59.6 in4 177.98 in4
Peak Notch Depth 0.00 Moment: -1804 ft-Ib 2254 ft-lb
Base Notch Depth 0.00 Shear: -604 Ib 1747 Ib
RAFTER LOADING COLLAR TIE DESIGN
Uniform Floor Loading 1.5 x 5.5 Solid Sawn Lumber with minimum Ft = 575
Roof Live Load: LL = 40 psf Base Values Adiusted
Roof Dead Load: DL = 12 psf Tension Parallel to Grain Ft = 575 psi Ft' = 992 psi
Slope Adjusted Spans And Loads Cd =1.15 Cf 0.00
Interior Span: L -adj = 7.94 ft Collar Tie Location 2.02 ft
Eave Span: L -Eave -adj = 1.12 ft . Collar Tie Tension 1326 lb
Rafter Live Load: wL -adj = 64 pif Collar Tie Capacity 8183 Ib
Eave Live Load: wL -Eave -adj = 64 pif Nailing Required @ Both Ends
Rafter Dead Load: wD-adj = 21 pif 16d Common 9 Nails
Rafter Total Load: wT -adj = 85 plf 16d Sinker 10 Nails
Eave Total Load: wT- Eave -adj = 85 plf 16d Box 12 Nails •
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NOTES
NOTE: INSTALL 5 - TIMBERLOK SCREWS EACH END OF EXISTING 2x6 COLLAR TIES.