why describe U shear lag factor ( for tension members ) is used in design ?
why describe U shear lag factor ( for tension members ) is used in design ?
Homework Answers
When a channel section or any angle section (tension member) is connected to any other member (gusset plate) by means of bolting or welding so that only few legs are connected then the external force is resisted only by connected legs not by outstanding legs . This gives rise to the non uniform stress distribution adjacent to connection . This is called shear lag.
To account for this shear lag, a factor has been introduced known as shear lag factor.
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why describe U shear lag factor ( for tension members
) is used in design ?
What is the shear lag factor, U, for the case where a tension load is transmitted...
What is the shear lag factor, U, for the case where a tension load is transmitted directly to each of the cross-sectional elements by fasteners or welds? Group of answer choices 0.6 1.0 0.9 0.5
Problem 1: Shear Lag Factor & Effective Areas For the steel tension members and corresponding connections...
Problem 1: Shear Lag Factor & Effective Areas For the steel tension members and corresponding connections shown below, determine the effective area. Note that the abbreviation PL indicates a steel plate with naming convention: thickness x width. Assume standard diameter holes, where applicable a) For each case, compute or determine the shear lag factor, the net area, and the effective area. Tabulate your final answers lowest values? What do these values mean in terms of the stresses at the connection?...
What is the Phi factor for shear? Why is the Phi factor typically lower than the...
What is the Phi factor for shear? Why is the Phi factor typically lower than the Phi for flexure? What are two cases that we cannot use the ACI approach to shear design? Why can't we use the ACI method? Why is it possible to design for the shear at “d” away from the support? What are the advantages of designing for the shear at “d” away from the support?
reinforced concrete design , ACI code Shear Strength of Flexural Members Design for shear forces The...
reinforced concrete design , ACI code
Shear Strength of Flexural Members Design for shear forces The simply supported beam shown is subjected to ultimate (factored) distributed and concentrated loads 1. Determine the shear capacity of concrete at the critical section according to ACI318-14 detailed method in Table 22.5.5.1. Design the shear reinforcement and determine the locations on the beam shear force diagram where this shear reinforcement should be placed. 2. 3. Determine the locations within the beam where minimum shear...
Topic - Construction: Structural, loads, tension 1.) Explain why pure tension members are the most efficient structural...
Topic - Construction: Structural, loads, tension 1.) Explain why pure tension members are the most efficient structural types for carrying building loads? 2.) How structural members behave when they are subjected to tension, compression, torsion, and bending forces in structures. (Please include references, links, if used.)
a. What is the purpose of lateral ties in a column? b. In shear wall design,...
a. What is the purpose of lateral ties in a column? b. In shear wall design, requirements related to shear resistance are specified in TMS 402 Section 7.3.2.6.1.1. (shown below) Explain why the "code" stipulates these requirements. When designing special reinforced masonry shear walls to resist in-plane forces in accordance with Section 9.3, the design shear strength, ¢ Vn, shall exceed the shear corresponding to the development of 1.25 times the nominal flexural strength Mn, of the element, except that...
11. (10 points) Check to determine if a W14x159 used as a column can support an...
11. (10 points) Check to determine if a W14x159 used as a column can support an axial dead load of 250k and an axial live load of 1000k if the length of the column is 14 feet and the value of G for Joint A has been determined to be 0.8. Use the LRFD Design Method and assume that the columns are bending about their y axis as shown. (Hint: The answer is in the Manual) W14x159 Fixed Base at...
3. A C 9x15 is to be used as a tension member. The channel is bolted to a 5/8 in gusset plate wit...
3. A C 9x15 is to be used as a tension member. The channel is bolted to a 5/8 in gusset plate with 7/8 inch diameter, A307 bolts. The tension member is AS72 Grade 50 steel and the gusset plate is A36. Follow Figure 3. (a) Check all spacing and edge distance irements; (b) Compute the design strength based on shear and bearing; and (c) Compute the allowable strength based on shear and bearing. 23" 3" 3" С 9x 15...
QUESTION 3 - Tension members (50 marks) Determine the design tensile capacity N* of the connections...
QUESTION 3 - Tension members (50 marks) Determine the design tensile capacity N* of the connections shown in Fig. 3. All plates are of Grade 300 steel and the PFC sections of Grade 300PLUS steel (Hint: both PFCs and plates should be considered) 10- Bolt M16 150PFC 50 Bolt M16 100 10 150PFC 50 10 200 mm Figure 3
Question (a) Why locating shear centre is important in structural design. Locate the shear centre...
Question (a) Why locating shear centre is important in structural design. Locate the shear centre of the thin walled section shown in Fig. 2a with respect to the centre of the web (O) for a vertical downward shear of 100 kN (7 Marks) 50 mm 25mn 25 mm 25 mm 25 mm 25 mm Fig. 2a For the beam shown in Fig. 2b, determine the maximum deflection between B and C. Support at 8 is a pin and support at...
Problem 1: Shear Lag Factor & Effective Areas For the steel tension members and corresponding connections shown below, determine the effective area. Note that the abbreviation PL indicates a steel plate with naming convention: thickness x width. Assume standard diameter holes, where applicable a) For each case, compute or determine the shear lag factor, the net area, and the effective area. Tabulate your final answers lowest values? What do these values mean in terms of the stresses at the connection?...
reinforced concrete design , ACI code
Shear Strength of Flexural Members Design for shear forces The simply supported beam shown is subjected to ultimate (factored) distributed and concentrated loads 1. Determine the shear capacity of concrete at the critical section according to ACI318-14 detailed method in Table 22.5.5.1. Design the shear reinforcement and determine the locations on the beam shear force diagram where this shear reinforcement should be placed. 2. 3. Determine the locations within the beam where minimum shear...
a. What is the purpose of lateral ties in a column? b. In shear wall design, requirements related to shear resistance are specified in TMS 402 Section 7.3.2.6.1.1. (shown below) Explain why the "code" stipulates these requirements. When designing special reinforced masonry shear walls to resist in-plane forces in accordance with Section 9.3, the design shear strength, ¢ Vn, shall exceed the shear corresponding to the development of 1.25 times the nominal flexural strength Mn, of the element, except that...
11. (10 points) Check to determine if a W14x159 used as a column can support an axial dead load of 250k and an axial live load of 1000k if the length of the column is 14 feet and the value of G for Joint A has been determined to be 0.8. Use the LRFD Design Method and assume that the columns are bending about their y axis as shown. (Hint: The answer is in the Manual) W14x159 Fixed Base at...
3. A C 9x15 is to be used as a tension member. The channel is bolted to a 5/8 in gusset plate with 7/8 inch diameter, A307 bolts. The tension member is AS72 Grade 50 steel and the gusset plate is A36. Follow Figure 3. (a) Check all spacing and edge distance irements; (b) Compute the design strength based on shear and bearing; and (c) Compute the allowable strength based on shear and bearing. 23" 3" 3" С 9x 15...
QUESTION 3 - Tension members (50 marks) Determine the design tensile capacity N* of the connections shown in Fig. 3. All plates are of Grade 300 steel and the PFC sections of Grade 300PLUS steel (Hint: both PFCs and plates should be considered) 10- Bolt M16 150PFC 50 Bolt M16 100 10 150PFC 50 10 200 mm Figure 3
Question (a) Why locating shear centre is important in structural design. Locate the shear centre of the thin walled section shown in Fig. 2a with respect to the centre of the web (O) for a vertical downward shear of 100 kN (7 Marks) 50 mm 25mn 25 mm 25 mm 25 mm 25 mm Fig. 2a For the beam shown in Fig. 2b, determine the maximum deflection between B and C. Support at 8 is a pin and support at...
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