3317 RUCKER AVE C D 2020-07-15 - Laserfiche WebLink

N<->S 26 40.00 42.00 Line 98.3 98.3 W<->E 1 -2.00 0.00 Line 115.3 115.3 W<->E 2 0.00 18.25 Line 153.7 153.7 W<->E 3 0.00 0.00 Point 419 419 W<->E 4 18.25 23.50 Line 136.3 136.3 W<->E 5 23.50 33.50 Line 136.3 136.3 W<->E 6 33.50 34.00 Line 196.5 196.5 W<->E 7 34.00 34.00 Point 681 681 W<->E 8 34.00 35.50 Line 196.5 196.5 W<->E 9 35.50 36.00 Line 81.2 81.2 W<->E 10 36.00 38.00 Line 60.3 60.3 W<->E 11 36.00 36.00 Point 346 346 TORSIONAL ANALYSIS Feb. 11, 2018 11:05:44 FLEXIBLE DIAPHRAGM WIND DESIGN Assume Ki = Fi (flexible diaphragm, factored), so that Fdi = Fi and Cr = Cl. Compute Fti with etx, ety = 0, eax = 15%, eay = 15%, Jy = 0 for x direction Forces on the current level only are analyzed. Accumulation with upper level shearline forces is done later. BUILDING LEVEL 3 W->E and S->N WIND DESIGN (CASE 2) Center of Rigidity Cr (ft) = sum (Ki*di)/ Kt Crx: 20.00 Cry: 19.00 Building Dimension B perpendicular to force (ft) Bx: 44.00 By: 40.00 Accidental Eccentricity ea (ft) = 0.15B eax: 6.60 eay: 6.00 Total Rigidity Kt (lbs) = sum (Ki) Ktx: 3387 Kty: 2898 Torsional Rigidity J (lbs-ft^2) = sum (Ki*li^2) Jx: 553108 Jy: 826121 Accidental Eccentricity as entered, see ASCE 7 C27.4.6. 75% of generated loads used North-South Forces: Concentrated Load F (lbs): 3387 Centre of Load Cl (ft): 20.00 Torsions T (lbs-ft) T- = F*(-eax): -22354 T+ = F*eax: 22354 Shearline Forces Torsional Fti+ = (T+)*Ki*li /Jx; Fti- = (T-)*Ki*li /Jx Direct Fdi = F*Ki/Ktx ; Total Fi = abs max(Fdi + (Fti- or Fti+)) Shear Rigidity Reaction From Total Direct Torsional Force line Location Cr Force Force Fti- Fti+ Fti i Ki(lbs) di(ft) li(ft) Fi(lbs) Fdi(lbs) (lbs) (lbs) (lbs) 2 691 0.00 -20.00 1249 691 558 -558 558 4 1003 19.50 -0.50 1023 1003 20 -20 20 5 1003 20.50 0.50 1023 1003 -20 20 20 7 691 40.00. 20.00 1249 691 -558 558 558 East-West Forces: Concentrated Load F (lbs): 2898 Centre of Load Cl (ft): 19.00 Torsions T (lbs-ft) T- = F*(-eay): -17391 T+ = F*eay: 17391 Shearline Forces Torsional Fti+ = (T+)*Ki*li /Jy; Fti- _ (T-)*Ki*li /Jy Direct Fdi = F*Ki/Kty ; Total Fi = abs max(Fdi + (Fti- or Fti+)) Shear Rigidity Reaction From Total Direct Torsional Force line Location Cr Force Force Fti- Fti+ Fti i Ki(lbs) di(ft) li(ft). Fi(lbs), Fdi(lbs) (lbs) (lbs) (lbs) A 1279 0.00 -18.99 1791 1279 511 -511 511 G 1619 34.00 15.00 2131 1619 -511 511 511 Page 10