Chapter 13, Problem 13.2PFS

Determine the effective net area using the U values given on Table 3.2 page77 of the reference book. An MC12x45 is connected through its web with 3 gageslines of 22mm diameter bolts. The gage lines are 76mm on center and the bolts arespaced 80mm on center along the gage line. If the center row of bolt is staggeredwith respect to the outer row, determine the effective net cross-sectional area of thechannel. Assume there are four bolts in each line.Draw the figure first and label it properly. Draw the fracture path using differentcolor or line weights.

How many bolts are required (LRFD and ASD) for the bearing-type connection shown if PD = 120 k and PL = 150 k? A325 7/8 -in bolts, threads excluded from shear planes.

Check the block shear capacity of the connection, use lrfd and asd design expression. Given the lightest W section from Plate 3, connected toa PL% x 10 on its top and bottom flanges, available to support working tensile loads of D = 420 kips and W = 330 kips. The member is to be 20 ft long and is assumed to have two lines of holes for 4-in diameter bolts in each flange. There will be at least three holes in each line 3 inches on center.

Given W 16x36 section as shown below (Fy = 50 ksi, Fu = 65ksi). The holes are 3/4 inch in diameter. The connection is bottled at the web only. Assume x= 0.76 inch.  2. The shear lag coefficient U and the effective area Ae

Determine the design strength Puand the allowable strength Pa for the connection shown if 7/8 in A325 bolts (threads excluded) are used in a slip-critical connection with a factor for fillers,hf = 1.0.  Assume A36 steel and Class B faying surface and standard size holes

How many bolts are required for LRFD and ASD for the bearing-type connection shown, if PD = 50 k and PL = 100 k? Fy = 50 ksi, Fu = 70 ksi, 34 -in A325 bolts, threads excluded from shear plane.

Given W 16x36 section as shown below (Fy = 50ksi, Fu= 65ksi). The holes are 3/4 inch in diameter. The connection is bolted at the web only. Assume x=0.76 inch, determine... 3. The Tensile strength Tn (LRFD) neglecting block shear failure mode.

A bolted connection of the general form shown inFigure 11.6 is to be used to transmit a tension force of 75 kips dead load and100 kips live load by using 7∕8-in. A325 bolts and plates of A992 steel withFy = 50 ksi and Fu = 58 ksi. The outer plates are to be 8 in. wide and thecenter plate is to be 12 in. wide. Find the required thicknesses of the platesand the number of bolts needed if the bolts are placed in two rows. Sketchthe final layout of the connection.

Determine the LRFD tensile design strength and the ASD tensile strength of the W12 x 30 (Fy = 50 ksi, Fu = 65 ksi) shown in Fig. 3.21 if 7/8 - in bolts are used in the connection. Include block shear calculations for the flanges.