Enrolment No.
/Seat No_______________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER–V (NEW) EXAMINATION – WINTER 2024
Subject Code:3150612 Date:02-12-2024
Subject Name:Design of Structures
Time:10:30 AM TO 01:00 PM Total Marks:70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Simple and non-programmable scientific calculators are allowed.
5. Use of IS: 456-2000, IS: 800-2007, IS 875 and Steel Table is permitted.
6. Steel hand book (SP-6) allowed.
Marks
Q.1 (a) Explain the limit state method for deign of reinforced concrete and steel 03
structures.
(b) Differentiate between (1) Pitch and Gauge distance (2) End and Edge Distance 04
and (3) Bolt diameter and Hole Diameter of Bolted Connection
(c) Calculate the design moment capacity of a beam section 300 mm X 450 mm 07
effective depth reinforced with 942 mm2 tension reinforcement. Justify your
answer with suitable section check whether it is balanced, under-reinforced or
over-reinforced section. Use grade M25 and 415.
Q.2 (a) Why the balanced sections are most preferred over Under-reinforced section 03
and Over-reinforced section. Also mention which type of section is avoided in
design of singly reinforced beam with suitable reason.
(b) Explain the different types of failures observed in bolted connection with neat 04
sketches.
(c) Design the following joints using the ordinary black bolts between two plates 07
of width 200 mm and thicknesses of 10 mm and 18 mm respectively to transmit
a factored load of 160 kN.
(i) Lap Joint
(ii) Double cover butt joint with 8 mm cover plates.
Use plates made by Fe 410 grade steel and 16 mm diameter bolt of grade 4.6.
OR
(c) For a rectangular beam of width 300 mm and effective depth 600 mm with 25 07
mm cover, the tensile reinforcements are provided by 5 Nos. 25 mm diameter
bars for a design shear force of 200 kN. Check whether the nominal shear stress
lies between the critical shear stress and maximum permitted shear stress for
M20 grade of concrete, i.e. τv < τc < τc, max.
Q.3 (a) A balanced reinforced concrete beam of M25 grade and width 450 mm is 04
having a factored limiting moment of 110 kN-m. The grade of steel is of Fe
415. Calculate the effective depth (to nearest multiple of 10) of the section.
1
(b) Design a laced column 10.5m long to carry factored axial load of 1000 kN. The 10
column is restrained in position but not restrained at both the ends. Provide
single lacing system. Use two Channel Section placed back-to-back. Assume
steel of grade 410 and bolts of grade 4.6. Design the lacing system with bolted
connection. Use ISMC 300 with spacing 184mm center to center. Take L/r=
93.35.
OR
Q.3 (a) Define (i) Characteristic Strength of concrete (ii) classification of long and 04
short column on basis of slenderness ratio
(b) Following are the details of a simply supported roof slab: 10
Inside dimension 7.5 m X 3.5 m, supported on bearing of 200 mm; Carries a
imposed load of 4 kN/m2 and floor finish of 1 kN.m2; Grade of concrete M20
and steel grade Fe 415; provide 10mm bars in tension side with a clear cover
of 20 mm. Assume a modification factor of 1.25 for the calculation of effective
depth. Calculate the overall depth, effective span, Design Loads, Factored
Moment and Shear, Effective depth required, area of tensile reinforcement.
Also provide Check for Shear and deflection for safer design.
Q.4 (a) State advantages and disadvantages of welded connections. 03
(b) Determine the development for 16 mm diameter bar, Fe 415 grade steel in 04
compression and M 25 grade of concrete.
(c) A perfectly axially loaded concrete column of gross dimension 400 mm X 400 07
mm is reinforced with 4 bars of 20 mm diameter. Determine the design axial
load carrying capacity of column. Consider M25 grade concrete and Fe 415
grade steel.
OR
Q.4 (a) Why are the end returns provided in fillet welds? 03
(b) Why are four different buckling curves prescribed to evaluate column strength? 04
(c) Explain the design procedure for laterally supported and unsupported steel 07
beam.
Q.5 (a) If a short column having overall dimension of 300 mm X 500 mm and 16 mm 03
diameter of longitudinal bars, Estimate the maximum spacing between two
lateral ties.
(b) The main reinforcement of RC slab consists of 10 mm bars at 10 cm spacing. 04
If it is desired to replace 10 mm bars by 12 mm bars, then estimate the revised
spacing of 12 mm bars.
(c) Design a laterally supported beam of effective span 5 m for the following data: 07
Grade of Steel: Fe 410;
Factored Maximum Bending Moment 180 kN-m, and maximum Shear Force
220 kN.
Only provide safety check for buckling.
OR
Q.5 (a) Draw neat sketch of battening system. 03
(b) Enlist the various failure modes of axially loaded tensile member along with 04
sketch (line diagram only).
2
(c) An ISA 110 mm X 110 mm X 10 mm carries a factored tensile force of 150 07
kN. It is to be jointed with a 10 mm thick gusset plate. Design the joint using
HSFG bolt when (i) no Slip is permitted (ii) When slip is permitted. Assume
steel id of Fe 410 grade.
*************
3
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER–V (NEW) EXAMINATION – WINTER 2023
Subject Code:3150612 Date:11-12-2023
Subject Name: Design of Structures
Time:10:30 AM TO 01:00 PM Total Marks:70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Simple and non-programmable scientific calculators are allowed.
5. Use of IS:456(2000), IS:800 (2007) and Steel table is permitted.
6. Assume M20 grade concrete and Fe415 steel for RCC element, if not provided.
MARKS
Q.1 (a) Define the following terms: 03
Clear Cover, Effective Cover and Partial Safety Factor.
(b) Discuss the advantages of structural steel. 04
(c) Explain briefly about Under reinforced section, Balanced section and 07
Over reinforced section.
Q.2 (a) Discuss the assumptions made in the limit state design of reinforced 03
concrete compression members.
(b) An R. C. C. beam of size 350 wide and 550mm deep is reinforced by 04
tension bars as 5nos. of 25mm dia. and compression bars as 3nos. of
20mm dia. Calculate the moment of resistance of beam if the clear cover
is 25mm on both the sides.
(c) Explain one way shear check and two way shear check for footing. 07
OR
(c) Discuss the various philosophies of the design in R. C. C. structures. 07
Also discuss the merits and demerits of each.
Q.3 (a) Give functions of following 03
(i) Stirrups in a beam (ii) Ties in a column
(iii) Distribution reinforcement in a slab
(b) A 4m high column is effectively held in position at both ends and 04
restrained against rotation at one ends. Its Diameter is resisted to 40 cm.
Calculate the reinforcement if it is required to carry a factored axial load
1600 kN.
(c) Design an Isolated square footing for square column of 450 mm x 450 07
mm For axial load of 840 kN. Take SBC of soil 100kN/m2. Draw all
necessary sketches.
OR
Q.3 (a) Sketch the details of slab base footing 03
(b) Determine Bolt value of 20 mm diameter bolt connecting 10 mm plates 04
in :
a) Single Shear and b) Double Shear
Grade of bolt is 4.6 & Grade of plate is 410 MPa.
(c) Design a simply supported beam of span 5 m subjected to working dead 07
load of 24kN/m and Live load of 13 kN/m. The beam is laterally
unrestrained. Check for deflection is not required
1
Q.4 (a) Differentiate between one-way slab and two-way slab. 03
(b) State the advantage and disadvantage of bolted and welded connections. 04
(c) An ISA 150x75x10 mm is subjected to axial tensile force of 190 kN 07
connected by its longer leg to 10 mm thick gusset plate. Design welded
connection for shop welding.
OR
Q.4 (a) Explain the lap and butt joint with neat sketches. 03
(b) Explain with neat sketches about “Lacing” and “Battening” 04
(c) Design a simply supported one way slab 3m x 7m supported on 300 mm 07
wide beams. The slab carries a 2 kN/m2 live load and 1.2 kN/m2 finish
load. Check criteria for deflection and development length.
Q.5 (a) Give Codal provisions for development length, Bond Stress , Anchoring 03
reinforcement.
(b) Explain factors affecting the strength of the tension member. 04
(c) Determine the design axial compressive load on the given column 07
section ISMB 450 @ 72.4 kg/m having length 4 m between the
intersections and pined at the ends. Take fy 250 MPa.
OR
Q.5 (a) Sketch the typical bolted connection using lug angle. 03
(b) Sketch reinforcement detail for a simply supported one-way square slab 04
showing all required details including torsion reinforcement.
(c) Design a slab base for a built up column composed of 2 channel sections 07
ISMC 300 placed back to back at clear spacing 200 mm Axial factored
load on column is 850 KN and SBC of soil is 175 KN/m2.
*************
2
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER–V (NEW) EXAMINATION – WINTER 2022
Subject Code:3150612 Date:11-01-2023
Subject Name:Design of Structures
Time:10:30 AM TO 01:00 PM Total Marks:70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Simple and non-programmable scientific calculators are allowed.
5. Use of IS : 456-2000, IS : 800-2007 and Steel Table is permitted
Marks
Q.1 (a) Define (1) Partial safety factor (2) Characteristic strength (3) limit state 03
(b) Derive the limiting values of Xu,lim/d for Fe 250 and Fe 415 grade of steel 04
(c) A singly reinforced beam 230 mm width and 450 mm effective depth 07
reinforced with 4 bars of 20 mm diameter on tension side. Materials used
are M20 grade concrete and Fe415 steel. State the type of section and
calculate moment of resistance of the section.
Q.2 (a) Define Under-reinforced section, Balanced section and Over-reinforced 03
section
(b) Calculate the area of tension reinforcement needed with regard to the limit 04
state method for a rectangular RC beam of width, 230 mm and effective
depth of 350 mm. The concrete grade is M20 and the grade of reinforcing
steel is Fe415. Consider the section to be a balanced section.
(c) Calculate the area of reinforcement in tension and compression zone of 07
rectangular R.C. beam of limited size 250 mm wide and effective depth
of 400 mm. The effective cover for compression and tension
reinforcement is 40 mm. The beam has to resist factored bending moment
180 kN-m. Use M20 grade of concrete and Fe: 415 grade of steel
OR
(c) A simply supported beam 230 mm x 450 mm effective depth is reinforced 07
with 4 no. 20 mm diameter bars of Fe 415 as tension reinforcement.
Design the shear reinforcement for a factored shear force of 250 kN. Use
M20 concrete and Fe 415 steel.
Q.3 (a) Differentiate between one-way slab and two-way slab 03
(b) Find the maximum design moments per unit width for a two-way slab of 04
size 6 m × 4 m without torsion reinforcement. The slab carries a total
factored load of 10 kN/m2 (inclusive of all). Take concrete of grade M 20
and Fe 415 steel.
(c) Design a short R.C. square column for an axial compressive factored load 07
of 1750 kN. Consider percentage of longitudinal reinforcement in the
range of 1% to 2%. Also, design lateral ties. Use M20 grade of concrete
and Fe 415 grade of steel
OR
Q.3 (a) Describe what you understand by class 4.6 and class 8.8 bolts? 03
(b) Calculate the development length of 10 mm diameter HYSD bars of grade 04
Fe 415 in tension and compression in concrete of grade M20
1
(c) Design a simply supported one-way slab for an effective span of 4.0 m to 07
carry total factored load of 10 kN/m2. Use M20 grade of concrete and Fe
415 grade of steel
Q.4 (a) State advantages and disadvantages of Steel structures over reinforced 03
structures
(b) Define (i) Gauge (ii) Pitch (iii) slenderness ratio (iv) Beam-column 04
(c) Select a suitable angle section to resist a factored tensile force of 200 kN 07
assuming single row of 16 mm bolts. Take yield stress fy= 250 N/mm2
and ultimate stress of 410 N/mm2.
OR
Q.4 (a) State advantages and disadvantages of welded connections 03
(b) A tie member of a roof truss consists of single ISA 100×75×8 of Fe410 04
grade, is welded to a 10 mm thick gusset plate. Design the welded
connection to transmit a tensile load of 300 kN. Assume connection are
made in the workshop
(c) Determine the design axial load on the column section ISMB 300 having 07
height 3.2 m, hinged at both ends. Take yield stress fy= 250 N/mm2 and
ultimate stress of 410 N/mm2.
Q.5 (a) Enlist the various failure modes of axially loaded tensile member along 03
with sketch (line diagram only).
(b) Write the design steps for single lacing system for column 04
Design a double angle discontinuous strut to carry a factored load of 200
(c) 07
kN. The length of the strut is 3.0 m between intersections. The two angles
are connected back to back on the opposite sides of gusset plate and tack
bolted. Take yield stress fy= 250 N/mm2 and ultimate stress of 410
N/mm2.
OR
Q.5 (a) Draw neat sketch of gusseted based foundation 03
(b) Two plates of 12 mm and 20 mm thickness have width of 120 mm. These 04
plates are connected by lap joint to resist design tensile load of 75 kN.
Find bolt value if 16 mm bolts of grade 4.6 is used for connection.
(c) Design a laterally supported beam of effective span 4 m for the following 07
data.
Grade of steel: Fe 410
Factored maximum B.M. = 175 kN-m
Factored maximum S. F. = 220 kN
Check for deflection is not required
**********
2
Enrollment No./Seat No.:
GUJARAT TECHNOLOGICAL UNIVERSITY
Bachelor of Engineering - SEMESTER - V EXAMINATION - SUMMER 2025
Subject Code: 3150612 Date: 17-05-2025
Subject Name: Design of Structures
Time:02:30 PM TO 05:00 PM Total Marks: 70
Instructions
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Simple and non-programmable scientific calculators are allowed.
5. Use of IS : 456-2000, IS : 800-2007, IS 875 and Steel Table or SP-6 (1) is permitted
Marks
Q.1 (a) Compare the limit state method for deign of reinforced concrete and steel structures 03
with respect to serviceability criteria.
(b) Define (1) Design Shear (2) Characteristic strength (3) Two-way Shear (4) Effective 04
cover
(c) Two plates of thickness 10 mm and 12 mm are connected using HSFG 8.8 grade 07
bolts of 22 mm diameter. Calculate the proof load. Calculate the design shear force
for the bolt if slip resistance is designed at ultimate load and assume fasteners in
clearance holes. (Take coefficient of friction = 0.5, number of effective interfaces
offering frictional resistance to slip = 1)
Q.2 (a) What does 6 and 8 imply for bolts of grade 6.8? 03
(b) Explain the different types of failures observed in bolted connection with neat 04
sketches.
(c) Calculate the design shear strength of ordinary bolt of nominal diameter 20 mm and 07
grade 4.6 under double shearing condition; one shearing plane intercepts at shank
portion and another at threaded portion. The sizes of two connecting plates are 12 mm
and 14 mm.
OR
(c) The singly reinforced concrete beam section of width 300 mm and effective depth 07
450 mm, is made of M25 grade concrete and Fe 500 grade reinforcing steel. The total
cross-sectional area of the tension steel is 942 mm2 . As per Limit State Design of IS
456, Calculate the design moment capacity of the beam section?
Q.3 (a) Differentiate the lap and butt joint with neat sketches. 03
(b) Draw neat sketch of Slab based foundation. 04
Page 1 of 3
(c) Determine the block shear strength of the tension member shown in Fig. 1. The steel 07
is of grade Fe 410.
OR
(a) Define (i) Gauge (ii) Pitch (iii) slenderness ratio 03
(b) Explain the stress-strain curve of concrete and steel with stress block parameters with 04
neat sketch adopted by Bureau of Indian Standards for Concrete and Steel Structures.
(c) Design an interior slab panel of effective dimensions 4.2 m × 6.25 m subjected to a 07
factored load of 15 kN/m2 inclusive of self-weight and floor finish load. The slab is
provided with main reinforcement bar diameter as 10 mm, and has overall thickness
of 150mm. Clear cover is 20 mm, grade of concrete is M20, grade of steel Fe415.
Q.4 (a) State advantages and disadvantages of welded connections. 03
(b) Determine the development for 16 mm diameter bar, Fe 415 grade steel in 04
compression and M 25 grade of concrete.
(c) The rectangular beam of width, 300 mm is having overall depth of 600 mm. The 07
concrete grade is M20 and the grade of reinforcing steel is Fe415. The tensile
reinforcement is provided by 5-20 mm dia. bars. The clear cover is 25 mm. The
design shear force is 500 kN. For M20 grade of concrete, the maximum shear stress
permitted is 2.80 MPa. Find the effective depth and check whether it is sufficient or
not.
OR
(a) Why are the end returns provided in fillet welds? 03
(b) A perfectly axially loaded concrete column of gross dimension 400 mm × 400 mm is 04
reinforced with 4 bars of 20 mm diameter. Determine the design axial load carrying
capacity of the column. Consider M25 grade concrete and Fe 415 grade steel.
(c) The rectangular beam of width, 300 mm is having overall depth of 400 mm. The 07
concrete grade is M20 and the grade of reinforcing steel is Fe 415. The tensile
reinforcement is provided by 4-20 mm bars. In the compression side, the
reinforcement is provided by 2-16 mm bars. The clear cover is 25 mm. The salient
points of design stress-strain curve of Fe 415 is given by (strain, stress, N/mm2 )
(0.00144, 288), (0.00163, 306), (0.00192, 324), (0.00241, 342), (0.00276, 351),
(0.00380, 360).
Evaluate the (i) additional moment that the section can take. (ii) The stress in steel at
compression level (iii) The moment of resistance of the whole section, and
(iv) Check the nature of the section (Under reinforced/Over reinforced)
Q.5 (a) Explain the necessity of four different buckling curves prescribed to evaluate column 03
strength?
(b) Enlist the various failure modes of axially loaded tensile member along with sketch 04
(line diagram only).
Page 2 of 3
(c) Design a laterally supported beam of effective span 5 m for the following data. Grade 07
of Steel: Fe 410; Factored Maximum Bending Moment 180 kN-m and maximum
Shear Force 220 kN. Only provide safety check for buckling.
OR
(a) If a short column having overall dimension of 300 mm X 500 mm and 16 mm 03
diameter of longitudinal bars, Estimate the maximum spacing between two lateral
ties.
(b) The main reinforcement of RC slab consists of 10 mm bars at 10 cm spacing. If it is 04
desired to replace 10 mm bars by 12 mm bars, then estimate the revised spacing of 12
mm bars.
(c) For a factored load of 15 KN/m2 , inclusive of self-weight, on an interior panel of 4.2 07
m × 6.25 m (effective dimensions).
Consider the following statements-
(1) The negative moment at the continuous edge for longer span, rounded to two
decimal places will be 18.75 KN-m; (2) The positive moment at the mid-span for
longer span, rounded to two decimal places will be 14.06 KN-m; (3) The negative
moment at the continuous edge for shorter span, rounded to two decimal places will
be 13.97 KN-m; (4) The positive moment at the mid-span for shorter span, rounded to
two decimal places will be 10.78 KN-m
Which of the above statements are incorrect? Justify your answers with proper
calculations.
***
Page 3 of 3
Enrolment No./Seat No_____________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER–V (NEW) EXAMINATION – SUMMER 2024
Subject Code:3150612 Date:21-05-2024
Subject Name:Design of Structures
Time:02:30 PM TO 05:00 PM Total Marks:70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Simple and non-programmable scientific calculators are allowed.
5. Use of IS : 456-2000, IS : 800-2007, IS 875 and Steel Table is permitted. SP-16 is not
allowed in examination.
MARKS
Q.1 (a) Differentiate the limit state method and working stress method of design 03
for RCC structures.
(b) Derive the limiting values of Xu,lim/d for Fe 250 and Fe 415 grade of steel. 04
(c) Evaluate the moment of resistance of a beam section 230 mm X 460 mm 07
effective depth reinforced with 2 Nos 16 mm diameter bars as compression
reinforcement at an effective cover of 40 mm and 4 Nos 20 mm diameter
bars as tension reinforcement Use grade M20 and Fe 500.
Q.2 (a) What does 6 and 8 imply for bolts of grade 6.8? 03
(b) State and explain in brief types of limit states in the design of steel 04
structures.
(c) Calculate the strength of a 20 mm diameter bolt of grade 07
4.6 for the Lap joint. The main plates to be jointed are 12 mm thick.
OR
(c) Two plates of 16mm and 14mm thickness are to be joined by groove weld. 07
The joint is subjected to a factored tensile force of 430 kN. Due to some
reasons the effective length of the weld that could be provided was 175
mm only. Determine the safety of the joint if (a) Single –V groove weld is
provided (b) Double-V groove weld is provided.
Q.3 (a) Differentiate the single and double cover butt joint with neat sketches. 03
(b) Draw neat sketch of slab base foundation. 04
(c) Find a suitable angle section to resist a factored tensile force of 200 kN 07
assuming single row of 16 mm bolts. Take yield stress fy= 250 N/mm2 and
ultimate stress of 410 N/mm2.
OR
Q.3 (a) Define (i) Factor of Safety (ii) Pitch (iii) slenderness ratio 03
(b) Compare the stress-strain behavior of concrete and steel with stress block 04
parameters adopted by IS: 456-2000 and IS 800-2007 with neat sketches.
(c) Design an interior slab panel of effective dimensions 4.2 m × 6.25 m 07
subjected to a factored load of 15 kN/m2 inclusive of self-weight and floor
finish load. The slab is provided with main reinforcement bar diameter as
10 mm, and has overall thickness of 150 mm. Clear cover is 20 mm, grade
of concrete is M20, grade of steel Fe415.
Q.4 (a) State advantages and disadvantages of bolted connections. 03
1
(b) Determine the development for 12 mm diameter bar, Fe 415 grade steel in 04
compression and M 20 grade of concrete.
(c) Evaluate the value of the least radius of gyration for a 07
compound column consisting of ISHB 250 @ 536.6 N/m with one cover
plate 300 mm × 20 mm on each flange.
OR
Q.4 (a) Draw neat sketch of Single and double lacing system. 03
(b) Why are the end returns provided in fillet welds? 04
(c) Explain the design procedure of laterally supported beam. 07
Q.5 (a) Define (1) Gauge distance (2) Edge distance (3) End distance 03
(b) Write the design steps for single lacing system for column. 04
(c) An I-section beam is fabricated with plates of following dimensions: 07
Flanges: 600 X 20 mm; Web: 1600 X 12 mm. Classify flanges, web and
section. Also determine the plastic moment capacity of the beam about its
strong axis, if the grade of steel is Fe 410.
OR
Q.5 (a) Why are four different buckling curves prescribed to evaluate column 03
strength?
(b) Enlist the various failure modes of axially loaded tensile member along 04
with sketch (line diagram only).
(c) Explain the design procedure for lug angle for tension member. 07
*************
2
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE – SEMESTER- V EXAMINATION-SUMMER 2023
Subject Code: 3150612 Date: 27/06/2023
Subject Name: Design of Structures
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Simple and non-programmable scientific calculators are allowed.
5. Use of IS : 456-2000, IS : 800-2007, IS 875 and Steel Table is permitted
MARKS
Q.1 (a) Differentiate the limit state method and working stress method of 03
design for Steel structures.
(b) Define (1) Characteristic load (2) Characteristic strength (3) Clear 04
cover (4) Effective cover
(c) Calculate the moment of resistance of a beam section 230 mm X 460 07
mm effective depth reinforced with 2 Nos 16 mm diameter bars as
compression reinforcement at an effective cover of 40 mm and 4 Nos
20 mm diameter bars as tension reinforcement Use grade M20 and Fe
500.
Q.2 (a) What does 4 and 6 imply for bolts of grade 4.6? 03
(b) Define Under-reinforced section, Balanced section and Over- 04
reinforced section.
(c) Calculate the strength of a 20 mm diameter bolt of grade 07
4.6 for the Lap joint. The main plates to be jointed are 12 mm thick.
OR
(c) A short column of size 300 mm X 450 mm is subjected to factored load 07
of 2000 kN. If the unsupported length of column is 4.2 m, Calculate (a)
the design moments due to minimum eccentricity.
If the above column is subjected to (b) Mux = 100 kN-m or (c) Muy =
30 kN-m, Find design loads and moments.
Q.3 (a) Differentiate the lap and butt joint with neat sketches. 03
(b) Draw neat sketch of gusseted based foundation. 04
(c) Select a suitable angle section to resist a factored tensile force of 200 07
kN assuming single row of 16 mm bolts. Take yield stress fy= 250
N/mm2 and ultimate stress of 410 N/mm2.
OR
Q.3 (a) Define (i) Gauge (ii) Pitch (iii) slenderness ratio 03
(b) Plot neat sketch of stress-strain curve of concrete and steel with stress 04
block parameters adopted by IS: 456-2000 and IS 800-2007.
(c) Design an interior slab panel of effective dimensions 4.2 m × 6.25 m 07
subjected to a factored load of 15 kN/m2 inclusive of self-weight and
floor finish load. The slab is provided with main reinforcement bar
diameter as 10 mm, and has overall thickness of 150mm. Clear cover
is 20 mm, grade of concrete is M20, grade of steel Fe415.
Q.4 (a) State advantages and disadvantages of welded connections. 03
1
(b) Determine the development for 16 mm diameter bar, Fe 415 grade steel 04
in compression and M 25 grade of concrete.
(c) Calculate the value of the least radius of gyration for a 07
compound column consisting of ISHB 250 @ 536.6 N/m with one
cover plate 300 mm × 20 mm on each flange.
OR
Q.4 (a) Draw neat sketch of battening system. 03
(b) Why are the end returns provided in fillet welds? 04
(c) Explain the design procedure of slab base and gusseted base 07
foundation.
Q.5 (a) Differentiate between one-way slab and two-way slab. 03
(b) Write the design steps for single lacing system for column. 04
(c) Design a simply supported one way slab for an effective span of 3.0 m 07
to carry total factored load of 9 kN/m2. Use M: 20 grade of concrete
and Fe: 250 grade of steel.
OR
Q.5 (a) Why are four different buckling curves prescribed to evaluate column 03
strength?
(b) Enlist the various failure modes of axially loaded tensile member along 04
with sketch (line diagram only).
(c) Explain the design procedure for laterally supported and unsupported 07
steel beam.
*************
