EWPAA Structural Plywood and LVL Design Manual - Engineered ...

ndn= Length of the nth nail ring;= Height of the nth nail ring.Nail Ring Number I p (mm 4 ) Nails/ring Total nails/gusset1620.38 x 10 762616.33 x 10 703611.13 x 10 64I p (total)647.84 x 1076146210Co-ordinates of extreme nail from the centroid as defined by x m and y m in Figure 10.10.LX m = − 602= 600 − 606. Joint Capacity – Moment Joint DesignXYYρρmmm= 540 mmd1 1= + sin102 2= 285 + 99= 384 mm=(540)2= 663 mm+ (384)From AS1720.1-1997 the capacity of the nailed moment joint is given by:⎡ Ip⎤φM j = φ .k 1 .k13.k14.k16.k17.Qk⎢ ⎥ ≥ M*⎣rm⎦where:φ = capacity factor = 0.8M j = moment capacity of the nailed jointM* = design action effect on the joint, i.e thecalculated moment to be resistedk 1 = duration of load factor for joints= 1.3 in this case2kkkk13141617= 1.0 for nails in side grain= 0.6 for nails in end grain= 1.0 in this case= 1.0 for nails in single shear= 2.0 for nails in double shear= 1.0 in this case= 1.2 for nails driven through close fitting holes inmetal side plates= 1.1 for nails driven through plywood gussets= 1.0 otherwise= 1.1 in this case= factor for multiple nailed joints for Type 1 jointsresisting in-plane moments= 1.2 in this case134