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1. For the built-up tee-shape (Fy= 350 MPa) shown: a). determine the yield moment M, with respect to the major principal axis. b). determine the plastic moment M, about the horizontal plastic neutral axis.

1. For the built-up tee-shape (Fy= 350 MPa) shown: a). determine the yield moment M, with respect to the major principal axis. b). determine the plastic moment M, about the horizontal plastic neutral axis.

Structural Analysis
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. For the built-up tee-shape (F,= 350 MPa) shown: a). determine the yield moment M, with respect to the major principal axis. b). determine the plastic moment M, about the horizontal plastic neutral axis. 250 mm 22 mm RL= 210 KN 300 mm WDL = 15 KN/m Win= 30 KN/m. 4.5m 7.5 m. R2 Problem 1 Problem 2 2. The steel beam is loaded with service loads shown. The uniform service dead load includes the weight of the beam. Lateral support is provided only at both ends and at midspan between supports. Allowable live load deflection is L/360 where L is the length between supports. Determine whether a W 30 x 108 of A992 steel (F,= 350 MPa and F,= 450 MPa) is adequate. Consider moment, shear, and deflection. Redesign if found not adequate. Use LRFD.
Transcribed Image Text:1. For the built-up tee-shape (F,= 350 MPa) shown: a). determine the yield moment M, with respect to the major principal axis. b). determine the plastic moment M, about the horizontal plastic neutral axis. 250 mm 22 mm RL= 210 KN 300 mm WDL = 15 KN/m Win= 30 KN/m. 4.5m 7.5 m. R2 Problem 1 Problem 2 2. The steel beam is loaded with service loads shown. The uniform service dead load includes the weight of the beam. Lateral support is provided only at both ends and at midspan between supports. Allowable live load deflection is L/360 where L is the length between supports. Determine whether a W 30 x 108 of A992 steel (F,= 350 MPa and F,= 450 MPa) is adequate. Consider moment, shear, and deflection. Redesign if found not adequate. Use LRFD.
3. Select an A992 (F;= 345 MPa and F= 450 MPa) W-shape for the floor beam AB of the floor system shown. In addition to the weight of the beam, the service dead load consists of 125 mm thick reinforced concrete slab (we= 24 KN/m³). The service live load is 3.80 KPa and there is 0.95 KPa movable partition load. The total deflection (DL + LL) must not exceed L/240, where L is the length between supports. Use ASD tairder Fleer Beam - 9m x column Im overhang 4@1.5 m = 6 m 4. A W14 x 61 must support a concentrated service live load of 665 KN applied to the top flange. Assume that the load is at a distance of at least half the beam depth from the support and design a bearing plate. Use Fy= 345 MPa for the beam and Fy= 250 MPa for the plate. Use LRFD 15. The beam shown is simply supported and has lateral support only at its ends. The only service dead load is the weight of the beam. Determine whether it is satisfactory for the load shown. A992 steel (Fy= 345 MPa and Fu= 450 MPa) is used, and the 30 KN/m is a service live load. Use LRFD 30 KN/m WiL = 30 KN/m W16x 40 -Centroid WI6 x 40 3 m
Transcribed Image Text:3. Select an A992 (F;= 345 MPa and F= 450 MPa) W-shape for the floor beam AB of the floor system shown. In addition to the weight of the beam, the service dead load consists of 125 mm thick reinforced concrete slab (we= 24 KN/m³). The service live load is 3.80 KPa and there is 0.95 KPa movable partition load. The total deflection (DL + LL) must not exceed L/240, where L is the length between supports. Use ASD tairder Fleer Beam - 9m x column Im overhang 4@1.5 m = 6 m 4. A W14 x 61 must support a concentrated service live load of 665 KN applied to the top flange. Assume that the load is at a distance of at least half the beam depth from the support and design a bearing plate. Use Fy= 345 MPa for the beam and Fy= 250 MPa for the plate. Use LRFD 15. The beam shown is simply supported and has lateral support only at its ends. The only service dead load is the weight of the beam. Determine whether it is satisfactory for the load shown. A992 steel (Fy= 345 MPa and Fu= 450 MPa) is used, and the 30 KN/m is a service live load. Use LRFD 30 KN/m WiL = 30 KN/m W16x 40 -Centroid WI6 x 40 3 m
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