28) Based on yielding only, the lightest equal leg 6x6 single angle that can resist a tensile axial load Pu 227 kips is the following: A) L6x 6x 7/8 B) L 6 x 6 x 3/4 C) L6x 6x 5/8 D) L6x6x 3/8 9) Which of the ASTM Designations given in Table 2-4 in the 15th edition of the AISCM is used for the designation of Round HSS shapes? A) A572 B) A913 C) A992 D) A500 30) An LRFD compression load Pu=36 kips is applied to an equal leg single angle. The effective lengt of the angle Le or (KL)-10 ft is the same in x direction and y direction Which of the following equa leg angles is the lightest weight equal leg angle that can resist Pu? A) L 8x8 x 1/2 B) L4x4 x 5/8 C) L6x 6x 7/16 D) L5x5 x 5/16

As shown in the figure below, a C7 x 12.25 tension member of A572 Gr 50 steel is connected to the gusset plate using 20-mm diameter bolts. Using equation 3.1 to evaluate the value of U, calculate the allowable strength of the member. 38 mm 50 mm 50 mm 75 mm 75 mm ооо 38 mm t = 9.5 mm Pa C7 x 12.25

6 6a 6b 6c Alaterally supported beam was designed for flexure. The beam is safe for shear & deflection. The most economical section is W 6 x 20 however the said section is not readily available at the time of the construction. If you are the engineer in charge of the construction what alternative section will be the best replacement? Why? Use: Fy=248 MPa: E=200,000 MPa Designation W8 x 24 W8 x 21 Weight Ag (mm2) 3787 36 31 width mm kg/m d (depth) 30 157.48 152.91 9.27 W6 x 20 expla'n briefly your cho'ce. (transform your comparative analys's 'nto a narative form to support your cho'ce) W8 x 28 42 204.72 165.99 11.81 5323 4568 201.42 164.97 10.16 3974 210.31 133.86 flange bf thickness tf Web 10.16 thickness tw 6.60 Elastic Properties mm 4 Ix x 106 7.24 6.22 6.35 17 41 34 31 mm 3 Sxx 103 220 398 342 298 mm rx 67.56 87.63 86.87 88.65 mm 4 lyx 106 6 9 8 4 mm 3 Syx 106 72 109 92 61 mm ry 38.10244 41.15 40.89 32 Plastic properties. mm 3 Zx x 103 244 446 380 334 mm 3 Zyx 103 110 166 140 93…

2.10 A square yellow-brass bar must not stretch more than 2.5 mm when it is subjected to a tensile load. Knowing that E = 105 GPa and that the allowable tensile strength is 180 MPa, determine (a) the maxi- mum allowable length of the bar, (b) the required dimensions of the cross section if the tensile load is 40 kN. 14 Ai Ei Q Search L ww * a hp

A steel plate (called a cover plate) having cross-sectional dimensions W2 5.0 in. x 0.4 in. is welded along the full length of the bottom flange of a W, 12.0 in. x 87.0 in. wide-flange beam (see the figure, which shows the beam cross section). I W2 cover plate What is the percent increase in the smaller section modulus (as compared to the wide-flange beam alone)? Round your answer to two decimal places. % in smaller section modulus =

ISWB600 Braket palte=11mm p=450KN E=270mm p=55mm bolt size =M20

Calculate the allowable (ASD) block shear rupture strength (kN) of a C230x22, attached through the web with six M20 bolts as shown. The yield strength of the steel is 345 MPa and the ultimate tensile strength is 483 MPa. C230x22 64.5 Ο Ο Ο OO 64.5 50 75 75 +

1- A structural analysis was done for the steel section whose shape and characteristics are shown below, and the outputs were arranged in the table below. Choose the appropriate amount, knowing that all numbers are in units (ksi, in). Sec tf Ag tw W16x100 29.4 0.585 0.985 Bolt (7/8 in) Maximum tensile force (P) that can be exerted T1. amount Effective cross- sectional area (Ae) Modulus M (mo) 635.04 O O fy 36 584.3 fu 58 D(bolt) 7/8 20.149 O P 0.85 O

column section = ISHB 450 Bracket plate thickness in mm =11 p=450KN E=330mm p=55mm bolt size =M20

What will be the block shear strength of a tension member as shown in figure below? The steel is of grade Fe410. ISA 80 x 50 x 8 50 115 mm mm 18 mm o hole 35 mm 45 mm