A second-floor framing system of a three-story warehouse is provided as shown. The columns, girders, and beams are made of structural steel and the flooring is a 150-mm thick normal weight reinforced concrete slab. The intermediate beams spaced at s = 2.5 m supports the slab. The floor beams are supported by the girders, which in turn are supported by the columns. Use L = 15 m as spacing of columns in the N-S direction. The height of each column is H = 4.2 m. 4 equal spaces of s N T L H L A Frame GHIJ Н THI F H B E C -4s- -4s- X Y Z -4s- D Activate Windo Go to Settings to act Only gravity loads, both dead and live floor loads, are supported by the slab. In addition to the weight of the structure, the following are the loads to be accounted for: Dead Loads: Construction Load Floor Slab Weight = 0.95 kPa To be computed Member Self-weight = To be computed Live Loads: Partition Load Occupancy Load 0.95 kPa 6.0 kPa Serviceability (NSCP C101-15 Table 424.2.2) The maximum live load deflection must not exceed 1/360 of the span length. The governing total deflection is induced by the dead load, live load, and the partition load. Applicable Load Combinations: U U 1.4D 1.2D + 1.6L == All the intermediate beams are W14 × 90. All the girders are W16 × 40, and all the columns are W12 × 58. Use A992 steel (Fy = 345 MPa and Fu- 450 MPa) for the beams, girders, columns, and steel-headed stud connectors. Assume the slab (unit weight - 23.6 kN/m³ and concrete strength fe'- 28 MPa) provides continuous lateral support of the intermediate floor beams. Use LRFD and apply NSCP 2015.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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1. Compute the flexural design strength (kN-m) of the column YZ. Consider the actual value of Cb. 2. Determine whether the steel column YZ satisfies the appropriate AISC interaction equation. 3. Design an A36 (Fy = 248 MPa, Fu = 400 MPa) column base plate at joint Z. Assume that the plate will rest on concrete (fc' = 35 MPa) with a surface area larger than the bearing area by an amount equal to 25 mm on all sides of the plate. 4. Determine the minimum diameter d (mm) of the 4-units anchor bolt to be used for the column base plate. Consider equivalent horizontal reaction at joint Z and check for the bearing deformation and tear-out of the plate and the shearing of the anchor bolt. Use 25 mm edge-distance to the center of the hole and nominal shear strength of the bolt Fnv = 185 MPa each anchor bolt.