5501 S 2ND AVE 2025-12-01 - Laserfiche WebLink

F-1 � WoodWorks® Sizer SOFTWARE FOR WOOD DESIGN Roof 1 -2 WoodWorks®Sizer Page 2 Analysis vs. Allowable Stress and Deflection using NDS 2018 : Criterion Analysis Value Design Value Unit Analysis/Design Shear fv = 78 Fv' = 207 psi fv/Fv' = 0.38 Bending(+) fb = 1458 Fb' = 1785 psi fb/Fb' = 0.82 Bending(-) fb = 1508 Fb' = 1516 psi fb/Fb' = 0.99 Deflection: Interior Live 0.34 = L/295 0.56 = L/180 in 0.61 Total 0.54 = L/186 0.84 = L/120 in 0.64 Cantil. Live 0.11 = L/240 0.28 = L/90 in 0.37 Total 0.16 = L/157 0.42 = L/60 in 0.38 Additional Data: FACTORS: F/E (psi) CD CM Ct CL CF Cfu Cr Cfrt Ci LC# Fv' 180 1.15 1.00 1.00 - - - - 1.00 1.00 2 Fb'+ 900 1.15 1.00 1.00 1.000 1.500 - 1.15 1.00 1.00 2 Fb'- 900 1.15 1.00 1.00 0.849 1.500 - 1.15 1.00 1.00 2 Fcp' 625 - 1.00 1.00 - - - - 1.00 1.00 - E' 1.6 million 1.00 1.00 - - - - 1.00 1.00 2 Emin' 0.58 million 1.00 1.00 - - - - 1.00 1.00 2 CRITICAL LOAD COMBINATIONS: Shear : LC #2 = D + S Bending(+) : LC #2 = D + S Bending(-) : LC #2 = D + S Deflection: LC #2 = D + S (live) LC #2 = D + S (total) Bearing Support 1 - LC #2 = D + S Support 2 - LC #2 = D + S Support 3 - LC #2 = D + S Load Types: D=dead S=snow Load combinations: ASD Basic from ASCE 7-16 2.4; all LC' s listed in the Analysis report CALCULATIONS: V max = 304, V design = 275 (NDS 3.4.3.1 (a) ) lbs M(+) = 372 lbs-ft; M(-) = 385 lbs-ft EI = 8.57e06 lb-in^2 "Live" deflection is due to all non-dead loads (live, wind, snow...) Total deflection = 1.50 permanent + "live" Bearing: Allowable bearing at an angle F'theta calculated for each support as per NDS 3.10.3 Lateral stability(-) : Lu = 12.69' Le = 19.19' RB = 18.9; Lu based on full span Design Notes: 1. Analysis and design are in accordance with the ICC International Building Code (IBC 2021) and the National Design Specification (NDS 2018), using Allowable Stress Design (ASD). Design values are from the NDS Supplement. 2. Please verify that the default deflection limits are appropriate for your application. 3. Continuous or Cantilevered Beams: NDS Clause 4.2.5.5 requires that normal grading provisions be extended to the middle 2/3 of 2 span beams and to the full length of cantilevers and other spans. 4. Sawn lumber bending members shall be laterally supported according to the provisions of NDS Clause 4.4.1. 5. SLOPED BEAMS: level bearing is required for all sloped beams. 6. The critical deflection value has been determined using maximum back-span deflection. Cantilever deflections do not govern design.