Instructions:
- The marks are indicated in the right-hand margin.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
Q.1 Choose the correct answer of the following (Any seven question
only):
The dead load includes
The effective throat thickness in case of incomplete penetration butt held is taken as
The effective length of fillet weld should be less than
The practical safety factor for the material of bolts is
Which of the following is not a compression member?
What is the maximum effective slenderness ratio for a tension member in which reversal occurs
Lacing shall be designed to resist a total transverse shear equal to of axial force
An ideal section for compression
Proof stess for minimum bolt tension is
The flange is classified as plastic if outstand element of compression flange of rolled section is than
Q.2 Solve this question :
Design a lap joint between the two plates each of width 120mm, if the thickness of one plate is 16 mm and the other is 12 mm. The joint has to transfer a design load of 160 kN. The plates are of Fe410 grade. Use bearing type bolt.
Q.3 Solve both questions :
List the 8 loading combination to be considered when considering only DL., LL. and EL.
What are the factors that influence wind pressure coefficient?
Q.4 Solve both questions :
Write short note on: (i) Plastic Section (ii) Compact Section (iii) Semi-Compact Section
Design a slab base for a column ISHB 350 @ 710.2N/m subjected to the factored axial compressive load of 120kN. Load is transferred to the base plate by direct bearing of Column flanges take $ f_u = 410 MPa $, $ f_y = 250 MPa $.
Q.5 Solve both questions :
Calculate the moment carrying capacity of a laterally Unrestrained ISMB 400 member of length 3 m.
Differentiate between local and lateral buckling of beam.
Q.6 Solve this question :
Design a built-up laced column with four angles to support an axial load of 900kN. The column is 12 m long and both the ends are held in position and restrained against rotation. Assume Fe 410 grade steel.
Q.7 Solve both questions :
A tie bar 100 mm x 16 mm is welded to another plate. It is subject to factored pull of 300 kN. Find the minimum overlap required if 8 mm site fillet welds are used. Assume any missing data.
Why is lacing provided in the columns?
Q.8 Solve this question :
A tie member of truss consists of double angle section each 80 mm x 80 mm x 8 mm welded on the opposite side of a 12 mm thick gusset plate. Design a fillet weld for making connection in the workshop. The factored tensile force in the member is 300 kN.
Q.9 Write short notes on any four of the following:-
Instructions:
- The marks are indicated in the right-hand margin.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
Q.1 Choose the correct answer of the following (Any seven question
only):
The dead load includes
The effective throat thickness in case of incomplete penetration butt held is taken as
The effective length of fillet weld should be less than
The practical safety factor for the material of bolts is
Which of the following is not a compression member?
What is the maximum effective slenderness ratio for a tension member in which reversal occurs
Lacing shall be designed to resist a total transverse shear equal to of axial force
An ideal section for compression
Proof stess for minimum bolt tension is
The flange is classified as plastic if outstand element of compression flange of rolled section is than
Q.2 Solve this question :
Design a lap joint between the two plates each of width 120mm, if the thickness of one plate is 16 mm and the other is 12 mm. The joint has to transfer a design load of 160 kN. The plates are of Fe410 grade. Use bearing type bolt.
Q.3 Solve both questions :
List the 8 loading combination to be considered when considering only DL., LL. and EL.
What are the factors that influence wind pressure coefficient?
Q.4 Solve both questions :
Write short note on: (i) Plastic Section (ii) Compact Section (iii) Semi-Compact Section
Design a slab base for a column ISHB 350 @ 710.2N/m subjected to the factored axial compressive load of 120kN. Load is transferred to the base plate by direct bearing of Column flanges take $ f_u = 410 MPa f_y = 250 MPa $.
Q.5 Solve both questions :
Calculate the moment carrying capacity of a laterally Unrestrained ISMB 400 member of length 3 m.
Differentiate between local and lateral buckling of beam.
Q.6 Solve this question :
Design a built-up laced column with four angles to support an axial load of 900kN. The column is 12 m long and both the ends are held in position and restrained against rotation. Assume Fe 410 grade steel.
Q.7 Solve both questions :
A tie bar 100 mm x 16 mm is welded to another plate. It is subject to factored pull of 300 kN. Find the minimum overlap required if 8 mm site fillet welds are used. Assume any missing data.
Why is lacing provided in the columns?
Q.8 Solve this question :
A tie member of truss consists of double angle section each 80 mm x 80 mm x 8 mm welded on the opposite side of a 12 mm thick gusset plate. Design a fillet weld for making connection in the workshop. The factored tensile force in the member is 300 kN.
Q.9 Write short notes on any four of the following:-
Instructions:
- The marks are indicated in the right-hand margin.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
- Use of IS 800, IS 808 and Steel Tables is permitted.
- Assume the necessary relevant data with justification, if required.
Q.1 Choose the correct answer of the following (any seven):
Splices for compression members are designed for
The slenderness ratio of compression members is limited to account for
Pitch in bolted connection shall not be more than ____ in tension member and ____ in compression member.
For same load, unsupported length and end conditions, a laced column as compared to battened column
The best double-angle compression member section is
The maximum gauge length in bolted connection is
The most suitable compression member section for a roof truss is
An ideal section for compression member is
The deflection of steel beams in buildings other than industrial building is limited to span divided by
In a bolted plate girder flange, the angle section used should be
Q.2 Solve both questions :
(i) Classify the plastic, compact and semi-compact sections. (ii) Consider a T-section of flange 100 mm x 10 mm and web 150 mm x 10 mm. Calculate shape factor, plastic moment and reserve of strength. Use Fe 410 grade of steel.
Design a double-cover plate butt joint using hexagonal head bolt ISO 4016-M 24 x 70-grade 5.6 property class C to connect two flats of size 350 mm x 16 mm for the maximum efficiency. Assume plate material as E250.
Q.3 Solve both questions :
A water tank is made with 10 mm thick plates. The plates are jointed by a lap joint using 18 mm dia bolts of grade 4.6 property class C at a pitch of 60 mm. Find the efficiency of the joint.
The tension member of a bridge truss consists of a channel ISMC 300. Design a fillet weld connection of the channel to a 10 mm gusset plate. The member has to transmit a factored force of 800 kN. The overlap is limited to 350 mm. Use field welding.
Q.4 Solve both questions :
Differentiate between type-1 and type-2 bracket connections.
A beam ISMB 350@514 N/m has to transmit a factored end reaction of 200 kN to the flange of a column ISHB 250@536.6 N/m. Design a stiffened seat connection using shop welded fillet welds.
Q.5 Solve both questions :
Discuss in detail the design procedure for built-up batten column.
A column section ISHB 400@759.29 N/m is to be spliced. Design the splice plates and the connections using M20 bolts of product grade C and property class 4.6. Assume the column has machined ends. The factored design loads are the following: Axial load over the column = 525 kN, Shear force = 225 kN, Bending moment = 75 kN-m.
Q.6 Solve this question :
A column of effective length is 9.3 m. It is subjected to an axial factored load of 1500 kN. Design the lacing system with site welded connections for two channels back-to-back.
Q.7 Solve both questions :
Discuss in detail the stiffened and unstiffened seat connections.
A beam ISMB 400@604.3 N/m has to transmit a factored reaction of 160 kN to the flange of a framed column ISHB 200@392.4 N/m. Design a connection. Assume site welding.
Q.8 Solve this question :
A welded plate girder of 20 m span is subjected to the BM of 4000 kN-m and the SF of 800 kN (both are factored loads). The girder is laterally restrained. Use steel of grade Fe 410 and assume yield stress to be 250 MPa. Design the plate girder and check for bending strength.
Q.9 Solve both questions :
Why is bracing system provided in the trusses? Why are sag rods required in roof trusses?
Design a channel section purlin using the available section of ISJC only for an industrial building to support a galvanized corrugated iron sheet roof for the following data: Span of truss = 10 m, Spacing of truss = 5 m, Spacing of purlins c/c = 1.5 m, Inclination of roof = $ 30^{\circ} $, Wind pressure = $ 2 kN/m^2 $, Weight of galvanized sheet = $ 150 N/m^2 $.
Instructions:
- The marks are indicated in the right-hand margin.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
- Use of IS 800, IS 808 and Steel Tables is permitted.
- Assume the necessary relevant data with justification, if required.
Q.1 Choose the correct answer of the following (any seven):
Splices for compression members are designed for
The slenderness ratio of compression members is limited to account for
Pitch in bolted connection shall not be more than ____ in tension member and ____ in compression member.
For same load, unsupported length and end conditions, a laced column as compared to battened column
The best double-angle compression member section is
The maximum gauge length in bolted connection is
The most suitable compression member section for a roof truss is
An ideal section for compression member is
The deflection of steel beams in buildings other than industrial building is limited to span divided by
In a bolted plate girder flange, the angle section used should be
Q.2 Solve both questions :
(i) Classify the plastic, compact and semi-compact sections. (ii) Consider a T-section of flange 100 mm x 10 mm and web 150 mm x 10 mm. Calculate shape factor, plastic moment and reserve of strength. Use Fe 410 grade of steel.
Design a double-cover plate butt joint using hexagonal head bolt ISO 4016-M 24 x 70-grade 5.6 property class C to connect two flats of size 350 mm x 16 mm for the maximum efficiency. Assume plate material as E250.
Q.3 Solve both questions :
A water tank is made with 10 mm thick plates. The plates are jointed by a lap joint using 18 mm dia bolts of grade 4.6 property class C at a pitch of 60 mm. Find the efficiency of the joint.
The tension member of a bridge truss consists of a channel ISMC 300. Design a fillet weld connection of the channel to a 10 mm gusset plate. The member has to transmit a factored force of 800 kN. The overlap is limited to 350 mm. Use field welding.
Q.4 Solve both questions :
Differentiate between type-1 and type-2 bracket connections.
A beam ISMB 350@514 N/m has to transmit a factored end reaction of 200 kN to the flange of a column ISHB 250@536.6 N/m. Design a stiffened seat connection using shop welded fillet welds.
Q.5 Solve both questions :
Discuss in detail the design procedure for built-up batten column.
A column section ISHB 400@759.29 N/m is to be spliced. Design the splice plates and the connections using M20 bolts of product grade C and property class 4.6. Assume the column has machined ends. The factored design loads are the following: Axial load over the column = 525 kN, Shear force = 225 kN, Bending moment = 75 kN-m.
Q.6 Solve this question :
A column of effective length is 9.3 m. It is subjected to an axial factored load of 1500 kN. Design the lacing system with site welded connections for two channels back-to-back.
Q.7 Solve both questions :
Discuss in detail the stiffened and unstiffened seat connections.
A beam ISMB 400@604.3 N/m has to transmit a factored reaction of 160 kN to the flange of a framed column ISHB 200@392.4 N/m. Design a connection. Assume site welding.
Q.8 Solve this question :
A welded plate girder of 20 m span is subjected to the BM of 4000 kN-m and the SF of 800 kN (both are factored loads). The girder is laterally restrained. Use steel of grade Fe 410 and assume yield stress to be 250 MPa. Design the plate girder and check for bending strength.
Q.9 Solve both questions :
Why is bracing system provided in the trusses? Why are sag rods required in roof trusses?
Design a channel section purlin using the available section of ISJC only for an industrial building to support a galvanized corrugated iron sheet roof for the following data: Span of truss = 10 m, Spacing of truss = 5 m, Spacing of purlins c/c = 1.5 m, Inclination of roof = $ 30^{\circ} $, Wind pressure = $ 2 kN/m^2 $, Weight of galvanized sheet = $ 150 N/m^2 $.
Instructions:
- The marks are indicated in the right-hand margin.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
Q.1 Choose the correct answer of the following (any seven) :
Generally, the purlins are placed at the panel points so as to avoid
The effective length of a fillet weld should not be less than
In moment resistant connections, the moment resistance of riveted connection depends upon
The thickness of the web of a mild steel plate girder is less than $ d/200 $. If only one horizontal stiffener is used, it is placed at
The risk coefficient k depends on
Stiffeners are used in a plate girder
When the bolts are subjected to reversal of stresses, the most suitable type of bolt is
The overlap of batten plates with the main members in welded connections should be more than
(where t is thickness of batten plate.)
The effective length of a compression member of length L held in position at both ends but not restrained in direction, is
Pick up the correct statement from the following.
Q.2 Solve both questions :
Give the details of various rolled steel section with suitable diagram.
A tension bar 100 mm x 100 mm is to carry a load of 150 kN. A specimen of the same quality steel cross-section area $ 800 mm^2 $ was tested in the workshop. The maximum load carried by the specimen was 400 kN. Find the ultimate tensile strength, factor of safety in the design and the gauge length.
Q.3 Solve both questions :
Explain in brief various types of loads to be considered in the design of steel structure.
A portal frame consists of two hinge supported column of 4 m height separated by a beam of span 5 m and loaded up to collapse with downward uniformly distributed load of 15 kN/m and lateral point load of 50 kN at left beam column junction. Find the plastic moment of resistance if it is of uniform strength.
Q.4 Solve both questions :
Differentiate between fillet weld and butt weld. Under which conditions fillet weld is preferred?
Why is lacing provided in the columns?
Q.5 Solve both questions :
A tie bar 100 mm x 16 mm is welded to another plate. It is subjected to factored pull of 300 kN. Find the minimum overlap required if 8 mm site fillet welds are used. Assume any missing data.
Write down the steps for the design of axially loaded columns.
Q.6 Solve this question :
A simply supported beam of span 6 m supports a reinforced concrete slab. The compression flange of the beam is restrained due to its connection with the slab. The beam is subjected to a dead load of 25 kN/m and an imposed load of 20 kN/m. Design the beam.
Q.7 Solve this question :
Design a grillage foundation with I-sections for a column having a load of 5000 kN. Column is provided with a base plate of size 700 mm x 800 mm. Take bearing capacity of the soil as $ 200 kN/m^2 $. Assume any missing data.
Q.8 Solve this question :
Design a built-up tension member to cагту a factored force of 340 kN. Use 20 mm diameter black bolts and gusset plate of 8 mm thick.
Q.9 Solve this question :
The line diagram of a steel truss of 9 m span, angle of slope $ 20^{\circ} $ is shown in the figure below. The roof sheeting is of corrugated GI sheets of unit weight 150 N/sq.m of plan area. The truss supports purlins of unit weight 75 N/sq.m of plan area. The weight of bracing used may be taken as 20 N/sq.m of plan area. The spacing of trusses is 4 m and height of eaves 4.5 m. If the building is of medium permeability, determine (a) dead load, (b) wind load and (c) live load at various panel points of the truss. Assume design wind pressure as $ 1500 N/mm^2 $.
Instructions:
- The marks are indicated in the right-hand margin.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
Q.1 Choose the correct answer of the following (any seven) :
Generally, the purlins are placed at the panel points so as to avoid
The effective length of a fillet weld should not be less than
In moment resistant connections, the moment resistance of riveted connection depends upon
The thickness of the web of a mild steel plate girder is less than $ d/200 $. If only one horizontal stiffener is used, it is placed at
The risk coefficient k depends on
Stiffeners are used in a plate girder
When the bolts are subjected to reversal of stresses, the most suitable type of bolt is
The overlap of batten plates with the main members in welded connections should be more than
(where t is thickness of batten plate.)
The effective length of a compression member of length L held in position at both ends but not restrained in direction, is
Pick up the correct statement from the following.
Q.2 Solve both questions :
Give the details of various rolled steel section with suitable diagram.
A tension bar 100 mm x 100 mm is to carry a load of 150 kN. A specimen of the same quality steel cross-section area $ 800 mm^2 $ was tested in the workshop. The maximum load carried by the specimen was 400 kN. Find the ultimate tensile strength, factor of safety in the design and the gauge length.
Q.3 Solve both questions :
Explain in brief various types of loads to be considered in the design of steel structure.
A portal frame consists of two hinge supported column of 4 m height separated by a beam of span 5 m and loaded up to collapse with downward uniformly distributed load of 15 kN/m and lateral point load of 50 kN at left beam column junction. Find the plastic moment of resistance if it is of uniform strength.
Q.4 Solve both questions :
Differentiate between fillet weld and butt weld. Under which conditions fillet weld is preferred?
Why is lacing provided in the columns?
Q.5 Solve both questions :
A tie bar 100 mm x 16 mm is welded to another plate. It is subjected to factored pull of 300 kN. Find the minimum overlap required if 8 mm site fillet welds are used. Assume any missing data.
Write down the steps for the design of axially loaded columns.
Q.6 Solve this question :
A simply supported beam of span 6 m supports a reinforced concrete slab. The compression flange of the beam is restrained due to its connection with the slab. The beam is subjected to a dead load of 25 kN/m and an imposed load of 20 kN/m. Design the beam.
Q.7 Solve this question :
Design a grillage foundation with I-sections for a column having a load of 5000 kN. Column is provided with a base plate of size 700 mm x 800 mm. Take bearing capacity of the soil as $ 200 kN/m^2 $. Assume any missing data.
Q.8 Solve this question :
Design a built-up tension member to cагту a factored force of 340 kN. Use 20 mm diameter black bolts and gusset plate of 8 mm thick.
Q.9 Solve this question :
The line diagram of a steel truss of 9 m span, angle of slope $ 20^{\circ} $ is shown in the figure below. The roof sheeting is of corrugated GI sheets of unit weight 150 N/sq.m of plan area. The truss supports purlins of unit weight 75 N/sq.m of plan area. The weight of bracing used may be taken as 20 N/sq.m of plan area. The spacing of trusses is 4 m and height of eaves 4.5 m. If the building is of medium permeability, determine (a) dead load, (b) wind load and (c) live load at various panel points of the truss. Assume design wind pressure as $ 1500 N/mm^2 $.
Instructions:
- The marks are indicated in the right-hand margin.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
Q.1 Choose the correct answer of the following (any seven):
In plastic analysis, the shape factor for circular sections is
A beam is defined as a structural member subjected to
The failure of a web plate takes place by yielding if the ratio of the clear depth to thickness of the web is less than
The most economical section for a column is
The distance between c.g. of compression and c.g. of tension flanges of a plate girder is known as
The allowable stress, in axial tension for rolled I-sections and channels, is taken as
If d is the distance between the flange angles, the vertical stiffeners in plate girders are spaced not greater than
The cross-section of a standard fillet is a triangle whose base angles are
A second horizontal stiffener is always placed at the neutral axis of the girder if the thickness of the web is less than
The thickness t of a single flat lacing should not be less than
Q.2 Explain the following:
Local and lateral buckling of beam
Checks required for beam design
Q.3 Solve this question :
Calculate the design compressive load for a column made up of ISHB 350 @ 710.2 N/m and 3.5 m high. The column is restrained in direction and position at both the ends. Use steel of grade Fe 410.
Q.4 Solve this question :
Design a simply supported beam of span 4.2 m carrying reinforce concrete floor in which top compression flange is embedded. Beam is carrying 20 kN/m dead load and 20 kN/m imposed load, resume Fe 410 grade steel.
Q.5 Solve this question :
Design a suitable angle section to carry tensile force of 250 kN. Use welded connection.
Q.6 Discuss the following:
Prying action
Advantage of fillet weld over butt weld
Comparison of welded joints with bolted joints
Q.7 Solve both questions :
Explain some of the common defects in the welds.
Write the advantage of welded joints over bolted joints.
Q.8 Solve this question :
Design a tension member to carry a pull of 830 kN. The member is 3.2 m between c/c of intersections. Design the member using channel section.
Q.9 Solve this question :
A tie member of truss consists of double angle section each 80 mm x 80 mm x 8 mm welded on the opposite side of a 12 mm thick gusset plate. Design a fillet weld for making connection in the workshop. The factored tensile force in the member is 300 kN.
Instructions:
- The marks are indicated in the right-hand margin.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
Q.1 Choose the correct answer of the following (any seven):
In plastic analysis, the shape factor for circular sections is
A beam is defined as a structural member subjected to
The failure of a web plate takes place by yielding if the ratio of the clear depth to thickness of the web is less than
The most economical section for a column is
The distance between c.g. of compression and c.g. of tension flanges of a plate girder is known as
The allowable stress, in axial tension for rolled I-sections and channels, is taken as
If d is the distance between the flange angles, the vertical stiffeners in plate girders are spaced not greater than
The cross-section of a standard fillet is a triangle whose base angles are
A second horizontal stiffener is always placed at the neutral axis of the girder if the thickness of the web is less than
The thickness t of a single flat lacing should not be less than
Q.2 Explain the following:
Local and lateral buckling of beam
Checks required for beam design
Q.3 Solve this question :
Calculate the design compressive load for a column made up of ISHB 350 @ 710.2 N/m and 3.5 m high. The column is restrained in direction and position at both the ends. Use steel of grade Fe 410.
Q.4 Solve this question :
Design a simply supported beam of span 4.2 m carrying reinforce concrete floor in which top compression flange is embedded. Beam is carrying 20 kN/m dead load and 20 kN/m imposed load, resume Fe 410 grade steel.
Q.5 Solve this question :
Design a suitable angle section to carry tensile force of 250 kN. Use welded connection.
Q.6 Discuss the following:
Prying action
Advantage of fillet weld over butt weld
Comparison of welded joints with bolted joints
Q.7 Solve both questions :
Explain some of the common defects in the welds.
Write the advantage of welded joints over bolted joints.
Q.8 Solve this question :
Design a tension member to carry a pull of 830 kN. The member is 3.2 m between c/c of intersections. Design the member using channel section.
Q.9 Solve this question :
A tie member of truss consists of double angle section each 80 mm x 80 mm x 8 mm welded on the opposite side of a 12 mm thick gusset plate. Design a fillet weld for making connection in the workshop. The factored tensile force in the member is 300 kN.