2726 W Strawberry Ln & Unit# 2 - Plan

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WoodWorks® Shearwalls 2726 Strawberry.wsw Jul. 21, 2024 11:26:22 MWFRS HOLD-DOWN DISPLACEMENT (flexible wind design) These displacements are used to determine deflections for force distribution Wall,Hold-Tensio n Vert. Displacement Slippage Shrink Comp.Crush Total Horz segment Dir down force Manuf Add da Vf da +Extra force da da Defl lbs in in in lbs in in lbs in in in Level 1 Line 1 1-2 S->N HDU2-SDS 1874 .054 .002 0.055 - - .248 3218 0.01 0.32 0.27 N->S HDU2-SDS 1865 .053 .002 0.055 - - .248 3209 0.01 0.32 0.27 Line 4 4-1 S->N HDU2-SDS 1900 .054 .002 0.056 - - .248 3244 0.01 0.32 0.27 N->S HDU2-SDS 1883 .054 .002 0.056 - - .248 3227 0.01 0.32 0.27 Line A A-2 Both HDU2-SDS 943 .027 .001 0.028 - - .248 1839 0.01 0.28 0.37 A-4 Both HDU2-SDS 889 .025 .001 0.026 - - .248 1337 0.01 0.28 0.75 Line C C-2 Both HDU2-SDS 829 .024 .001 0.025 - - .248 1277 0.01 0.28 0.74 C-4 Both HDU2-SDS 869 .025 .001 0.026 - - .248 1765 0.01 0.28 0.36 Legend: Wall, segment – Wall and segment between openings, e.g. B-3,2 = second segment on Wall 3 on Shearline B Dir – Force direction Tens., Comp. force – Accumulated ASD hold-down tension force T and end stud compression force C from overturning, dead loads and wind uplift da – Vertical displacements due to the following components: Vert. Displacement – Elongation when slippage calculated separately; displacement when combined elongation/slippage used Manuf – Using manufacturer's value for anchor bolt length, or no bolt contribution for connector-only elongation Unless marked with * = (ASD uplift force / ASD hold-down capacity) x max ASD elongation or displacement * - Maximum strength-level elongation or displacement is used. May result in higher than actual displacements for lightly loaded hold-downs, causing the segment to draw less force due to lower than actual stiffness. Add – Due to longer anchor bolt length than manufacturer's value, or entire bolt length for connector-only elongation = TL / ( Ab x Es ) Ab = bolt cross-sectional area Es = steel modulus = 29000000 psi L = Lb – Lh Lb = Total bolt length shown in Storey Information table Lh = Manufacturer's anchor bolt length for given displacement/elongation from hold-down database Slippage – Due to vertical slippage of hold-down fasteners attached to stud(s) when not combined with elongation Nails = en from SDPWS Table C4.2.3D using values for wood structural panels Bolts = Vf / (270,000 D^1.5) (NDS 11.3.6); D = bolt diameter, Vf = Tension force T / number of fasteners Shrink + Extra – Wood shrinkage plus extra displacement due to mis-cuts, gaps, etc. Shrinkage = 0.002 x (19% fabrication – 10% in-service moisture contents) x Ls Ls = Length between anchor bolt fasteners subject to perp-to-grain shrinkage; see Story Information table Crush – Deformation of bottom plate at compression end of wall segment = 0.02” x [ r / 0.73, r < 0.73; (1 + ( r - 0.73 ) / 0.27), 0.73 < r < 1; 2 r^3, r > 1] r = fcp / Fcp’; Fcp’ = Ct CM Fcp; fcp = C / A, A = cross sectional area of end studs Total da – Vert. Displacement + Slippage + Shrink + Crush + Extra Horz Defl – Anchorage deflection term in SDPWS Eqn. C.4.3.4-1 = h / beff x da h = Wall height. For end segments in FTAO walls, h is the average of the wall height and the distance from the bottom of opening to top of wall beff = Effective wall segment length = b - (tension stud pack width + hold-down anchor bolt offset) - (1/2 compression stud pack width) h and b are shown in Deflection table, beff in the Shear Wall Dimensions table 15 2726 W Strawberry Ln & Unit# 23/17/2025