A normal weight, concrete Beam has the following properties: b = 15", d = 21", h = 24", f'c = 5000 psi. What is the location of the critical shear we use to design the stirrups spacing? 21" from the support At the support 24" from the support 15" from the support

A W 305 x 87, 7.5m llong, is pinned at both ends and braced in the weak direction at the third points. Determine the available compressive strength. Properties: A = 10,965 mm² lx = 331.2x106 mm4 ly = 55.78x106 mm4 •• Please Show Solutions Steel Design: Civil Engineering Answersi Pn=Fer Ag= 274.61 (10965) 1000 Pn=3011.05 KN

Determine the maximum concrete and steel stresses at the point of maximum positive and negative moment.

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Situation 2: A square hollow steel strut of thickness 10 mm is pin connected to two connector plates of thickness, 12 mm. The connector plates are welded to the base plate of thickness, 12mm. The base plate is fastened to the concrete base by 4-16 mm diameter anchor bolts. The diameter of the pin is 16 mm. 48 kN 4. Which of the following most nearly gives the bearing stress between the strut and the pin? a. 150 MPa steel strut c. 120 MPa b. 140 МPа d. 125 MPa 30 5. Which of the following most nearly gives the shearing stress in the pin? c. 103.37 MPa d. 119.37 MPa a. 110.46 MPa ь. 126 39 МPа base 6. Which of the following most nearly gives the shearing stress in the anchor bolts? c. 51.69 MPa d. 47.16 MPa plate a. 55.04 MPa b. 59.68 MPa connector plate anchor bolt

3 A concrete floor slab 100 mm thick is cast monolithic with concrete beams 2.0 m on centers. The beams have a span of 4.0 m, web width of 250 mm and overall depth of 500 mm. The tensile reinforcement consists of 6-∅20 mm bars in two rows with 25 mm vertical clear spacing. Use material strengths f’c = 21 MPa and fy = 415 MPa. Calculate the following considering a T-geometry: Effective flange width of an interior beam in mm = ? Depth of uniform stress block at ultimate stage in mm to the nearest whole number = ?? Tensile steel strain compatible with concrete strain of 0.003 in 3 decimal places = ?

hinz 1. For the beam cross section below, determine the amount of steel As required to cause the strain in the tension steel & to be 0.005 just as the maximum strain in the concrete reaches 0.003. fc' = 3000 psi and fy = 60,000 psi. N.A. b= 10"- Cross Section d = 23" [7422 4233 134 S THE THE CALE DES 2 23-c me Like phans 0.005 PANE Strain 0.003 P HOME st 0.85f Stress 6 I.C. Nc NT * * * * * Delorme

4) will upvote anyone who will answer correctly. thanks

Please answer all the questions. Show complete solution. Don’t round up nor round off. Draw the needed diagram

a) The short steel post as shown in Figure 4 is a 152 x 152 UC37 with three compressive loads applied to the top. There is a central load of 200KN and eccentric loads of 'W kN and 100kN. The maximum allowable stress on the face AB is 185 N/mm?. (Area=D47.1cm2,Zxx=273cm) What is the value of the load 'W in kN? WkN A. 152 x 152 UC37 100mm -200KN 50mm 100KN Not to scale Figure 4