Question

Question 1 2 pts Which of the following will have a size factor, Cr, from table 5.2 0 5x5 stud grade 0 624, No. 1 grade O 4x8, No.1 and better grade O 8x8, Dense No. 1 grade 2 pts Question 2 Question 4 2 pts Which of the following is an incorrect definition for the type of Structural lumber listed? Hint: see section 5.1 OPost and Timbers: Rectangular sections 5in or more in thickness with width 2in or more greater than thickness. O Beams and Stringers: Rectangular sections 5in or more in thickness with width 2in or more greater than thickness O Dimension Lumber: Sections with thickness of 2in to 4in and width of 2in or more. O Decking: Lumber from 2in to 4in thick graded for flat application. Question 5 what is the purpose of bridging or blocking in joist construction? Hint: see page 202 ° To prevent excess deflection in joist O To prevent rotational or lateral buckling of the joist To serve as a horizontal diaphragm To provide a nailing edge for the ceiling panel lT-Mobile LTE 4:19 AM one of 30 min to this quiz. Have your culator ready before you begin the quiz notes, graded ho Question3 2 pt Consider a W21x68, 50 ksi steel, select the correct M (you do NOT have to subtract the moment due to the weight of the beam) Use Table 9.1 O If fully laterally braced M 487 kft O If laterally braced at 10ft, Mn 667 kf Oiflaterally braced at 11 g, M, 567 kft OIf laterally braced at 24ft, Mn-467 kf 21 Question 4 Why is the depth indicated in the designation for a W shape referred to as a nominal and the nearest whole number is used f O The actual depths within a depth group are identical, the chart O The actual depths within a depth group vary as a result of the rolling process O The actual O The actual depths within a depth group vary with the different types of steel used, Le. A36 vs depths within a depth group exclude the various thicknesses of the fiange A50. Question5

Answer 1

Sol 1) 34 the def m exceed» φ 12 inch out Cane rade ar depth Q 2u ich gYeate Than 13 Correct opt on 6×24 No. 4 gYada.