Structural Steel Design (6th Edition)
6th Edition
ISBN: 9780134589657
Author: Jack C. McCormac, Stephen F. Csernak
Publisher: PEARSON
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Chapter 9, Problem 9.17PFS
To determine
The selection of lightest satisfactory W shape section by using both LRFD and ASD and the value of
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For the plate girder shown below, check the flexural strength, then shear strength on end and
second panels. Lateral bracing is provided at each applied load (P). The girder is ASTM A1085
Gr. A (Fy=50 ksi). Using AISC-15th ed LRFD provisions. Pp=60 Kips, PL=30 Kips.
20"
0.375"
-105"
-105"
-285"
105"
105-
Q2) The members of the truss structure shown below is plain concrete. The compressive
strength of the concrete is 25 MPa. Compute the maximum load P that can be carried by
the structure. (Cross section of each member of the truss is 200 x 200 mm and don't use
material factors and do not consider slenderness) Comment on your results briefly.
P
A&
2m
SC
2 m
1380
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D
Please help me with my problem with complete solution and please use the nscR and gisc shapes
database.
Select the lightest w section (with Ey = 345 MPa) for the beams and girders shown in the figure. The floor
slab is 150mm reinforced concrete and supports a 0.80 MPa uniform live load. Assume that continuous
lateral bracing of the compression flange is provided. The maximum permissible deflection is L/250. Use
LRFD method only.
10.00 m
E
2.
2.
Chapter 9 Solutions
Structural Steel Design (6th Edition)
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- Material properties are: - Concrete weight: wt = 150 pcf - Concrete compressive strength: f'c = 4000 psi - Steel tensile strength: fy = 60 ksi - Stirrup consists of #4 bar - Framing members are not exposed to weather or in contact with soil. A simplified line diagram of Girder G2 is shown below: Determine the tributary area for each concentrated load for G-2. 30-0¹ B4 B4 69 Colum Dea 30-0 - Mark 89 PD & PL 30 square feet 400 square feet 700 square feet 1200 square feet 90-0 BI -Ser PD & PL a=arrow_forwardDetermine the adequacy of the tension members of the determinate bolted truss shown below based on the service loads shown. Use A50 steel. Assume there are three line of bolts in connection and neglect weight of members. Hint: There are three tension members in the truss.arrow_forwardDetermine the forces in each member of the truss. State wether it is in tension or compression. Draw a diagram of internal forces and present a results summary list. T a 446 a a a 12/2 커arrow_forward
- Determine whether a W24 x 117 of A992 steel is adequate for the beam shown. The uniform load does not include the weight of the beam. Lateral support is provided at A, B, and C. Use LRFD. P= 12 k P = 36 k WD = 1 k/ft WL = 3 k/ft 10 20- 30arrow_forwardThe built-up girder below is comprised of four A572 Grade 50 plates welded together. Compute the section modulus (S), plastic modulus (Z₁), and shape factor (Z₁/S). Using Table B41.b of the Specification, determine whether the flanges and web are compact, noncompact, or slender. -PL 1" x 40" 10" CLEAR SPACING PL 1.5" x 20" TYParrow_forwardAssignment 6.3 Beam Design Po P. PD P. P. P. If lateral support is provided at both ends, and at the load points, select the lightest W section of A992 steel that can safely carry the applied service loads 20 ft Applied Service Loads P, - 50 kips P - 100 kipsarrow_forward
- Determine the safe load P that the member below can carry. Use A-36 steel and NSCP 2001 PL = 1/8x 10 Fy = 50ksi kL = 20ft MC 8 X 8.5arrow_forwardDesign A laterally supported beam of effective span 6.0m for the Following grade of Steel : Fe 410 M max = 150KN-M V Max= 210KN Note : Solve this Problem using Indian Standard code not American standard code ..if solved in American code I will simply complaint to bartleby. NOTE : I need each step by step very clearly showing required plastic section modulus, selection of section, classication of section like that ..arrow_forwardDetermine whether the compression member shown in Figure is adequate to support the given service loads. a. Use LRFD. b. Use ASD.arrow_forward
- 2. Use LRFD method for the following welded shape: The flanges are 1 in × 10 in, the web is 5/16 in x 50 in, and the member is simply supported, uniformly loaded. Lateral support of the compression flange is provided at the ends and at the midspan. (a) Determine the design flexural strength if A572 - Grade 50 steel is used. (b) If the span is 34 ft and supports the loads wp = 4.5 k/ft (not including the beam weight) and w₁ = 4.5 k/ft, verify the moment capacity and select transverse stiffen- ers as needed.arrow_forwardA. A truss member is made with a pair of 4"x 3" x 3/8" angles with the long legs back to back. The angles are 36 ksi steel and are attached at the connection by a 3/8 in. plate running between the angles. The unbraced length is 12 feet and consider both ends fixed. What is the allowable axial load in compression? In tension? How does the compression capacity change if I connect them with a %" plate in between? Does it change tension capacity? (a) 12 C. A 28 foot column is braced top and bottom about the X-X axis and has K bracing as shown on the Y-Y axis only. It is built of A36 steel and is a W12 x 30 section. Can it support an axial load of 165 kips? State its actual capacity.arrow_forwardThe truss shown is composed of steel sections. If the 2L150 x 90 x 8 A36 steel section was used in member CG, is it satisfactory? Use 2 lines of 4-20mm fasteners spaced 75 mm on center for all joints. The loads applied in the truss are. service loads. Use ASD only. You can use ASEP Manual. Multiply the loads by 10. 50 kN 30 kN- 3 m G 3 m 3 m 30 kN- D 30 kN- A m E H m Carrow_forward
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