Chapter 11, Problem 6DP

Two W14x38 tension members are connected with a splice connection using plates attached atthe top and the bottom flanges. The design axial load Pu is 320 kips. The bolts are made of A325X, and thebolt diameter is ½ inch. (Slip-Critical connection)( LRFD units)

A tension member made of L4x4x1/2 is connected to gusset plate with welds. Using E70electrode and ½ inch weld size, design the balanced weld lengths.( Use AISC manual, LRFD units)

An office building is planned with a lateral-force-resisting system designed for earthquake resistance in aseismic zone. The seismic capacity of the proposed system, expressed as a force factor, is assumed tofollow a lognormal distribution with a median of 6.5 and a standard deviation of 1.5. The ground motionfrom the largest expected earthquake at the site is estimated to correspond to an equivalent force factor of 5.5.(a) What is the estimated probability that the building will experience damage when subjected to the largest expected earthquake? (b) If the building survives (i.e., experiences no damage) during a previous moderate earthquake with aforce factor of 4.0, what is the updated probability of failure of the building under the largest expectedearthquake?(c) Suppose future occurrences of the largest expected earthquake follow a Poisson process with a mean return period of 500 years. Assuming that damage events from different earthquakes are statisticallyindependent,…