b'THE OFFICIAL NFBA MAGAZINETable of Contents8- 11KEY EMPLOYEE INCENTIVE/RETENTION PLANSWhat TABLE OF CONTENTSAre You Waiting For?Thetalentandcontributionsofkey employees are often cited as one of the most significant value drivers within a successful company. Properly motivated key employees help build profits, which in h j= depth of the joint memberturn builds enterprise value. They also hold b j= thickness of the joint memberthe key to successful ownership transition.I = moment of inertia of the joint member (equal to moment of inertia of the main member) L j= length of the joint member Since knee braces are only loaded axially, and assuming pin-pin connection at each end, and ignoring the weight of the members, the b jand h jof the joint member can be calculated using Equation 9.This simplification is not applied to the joint members at the top of the post and at the bottom of the rafter as these joint members require member-specific flexural stiffness to resist internal shear and bending forces.h j,knee brace= b j,knee brace= A j, knee brace[9]2316-Research & Technology:Knee Braces in Post-Frame Buildings with Diaphragm-Action DesignNottoolongago,installingknee braces between posts and trusses was a standard practice.Building designers appliedlateralloadstostructural framingwithoutconsiderationof diaphragm action and the wood frame was designed to resist all lateral loads. Figure 2:Knee brace with slip at all joints (left) and with an equivalent slip at one joint (right) Table 1:Member properties b m h m E m&j I m&j (P/) slip (P/) m (P/) j A j L j b j h j4 / FRAME BUILDER - MAYin2023in lb/in 2 in 4 lb/in lb/in lb/in in 2 in in inPost 5.5 5.5 1200000 76.26 6050000 76137 0.381 6.0 0.008 49.0377107Rafter 1.5 7.25 1600000 47.63 2900000 75110 0.282 6.0 0.006 45.05Knee Brace @ Rafter 1.5 5.5 1600000 20.80 77107 2200000 74496 0.279 6.0 0.009 29.89Knee Brace @ Post 1.5 5.5 1600000 20.80 77107 2200000 74496 0.279 6.0 0.009 29.89Knee Brace (Eq) 1.5 5.5 1600000 20.80 25702 2200000 25406 0.095 6.0 0.002 51.18where,b = member thickness, h = member depth, E = elastic modulus, I = moment of inertia, A = cross section area, L = length of the joint member, P/ = axial stiffness, subscript "m" is for "main member" (post, knee brace, rafter), subscript "j" is for joint member'