On This Page
This set of Design of Steel Structures Multiple Choice Questions & Answers (MCQs) focuses on Design Of Steel Structures Set 4
Q1 | Length of an outstanding leg of a vertical stiffener, may be taken equal to
- 1/10th of clear depth of the girder plus 15 mm
- 1/20th of clear depth of the girder plus 20 mm
- 1/25th of clear depth of the girder plus 25 mm
- 1/30th of clear depth of the girder plus 50 mm
Q2 | If the depth of two column sections is equal, then the column splice is provided
- with filler plates
- with bearing plates
- with filler and hearing plates
- none of these
Q3 | On steel structures the dead load is the weight of
- steel work
- material fastened to steel work
- material supported permanently
- all the above
Q4 | A steel beam supporting loads from the floor slab as well as from wall is termed as
- stringer beam
- lintel beam
- spandrel beam
- header beam
Q5 | The area Ap of cover plates in one flange of a built up beam, is given by
- ap = zreqr + zbeam/h
- ap = zreqr + zbeam/a
- ap = zreqr × zbeam/h
- ap = zreqr - zbeam/h
Q6 | The economical depth d of a web plate in which allowable bearing stress is fb, and the maximumbending moment is M, as suggested by Rawater and Clark, is
- d = (m/fb)
- d = 1.5 (m/fb)
- d = 2.5 (m/fb)
- d = 4.5 (m/fb)
Q7 | Bending compressive and tensile stresses respectively are calculated based on
- net area and gross area
- gross area and net area
- net area in both cases
- gross area in both cases
Q8 | The thickness t of a single flat lacing should not be less than
- 1/30th length between inner end rivets
- 1/40th length between inner end rivets
- 1/50th length between inner end rivets
- 1/60th length between inner end rivets
Q9 | Tongue plates are provided in a steel girder at
- the upper flange
- the lower flange
- the upper end of the web
- the upper and lower ends of the web
Q10 | The slenderness ratio of a column supported throughout its length by a masonry wall is
- zero
- 10
- 100
- infinity
Q11 | The main assumption of the method of simple design of steel frame work, is:
- beams are simply supported
- all connections of beams, girders and trusses are virtually flexible
- members in compression are subjected to forces applied at appropriate eccentricities
- all the above
Q12 | Outstanding length of a compression member consisting of a channel, is measured as
- half of the nominal width
- nominal width of the section
- from the edge to the first row of rivets
- none of these
Q13 | The use of tie plates in laced columns is
- prohibited
- not prohibited
- permitted at start and end of lacing system only
- permitted between two parts of the lacing
Q14 | According to IS : 800-1962 the permissible bending stress in steel slab plates, is
- 1500 kg/cm2
- 1420 kg/cm2
- 2125 kg/cm2
- 1890 kg/cm2
Q15 | The side thrust T on the tie rods provided at the end beam of jack arch of rise R, is calculated fromthe formula
- t = wl/4r
- t = wr/8l
- t = wl/8r
- t = wl/2r
Q16 | The minimum pitch of rivet holes of diameter d should not be less than
- d
- 1.25 d
- 1.5 d
- 2.5 d
Q17 | Design of a riveted joint, is based on the assumption:
- load is uniformly distributed among all the rivets
- shear stress on a rivet is uniformly distributed over its gross area
- bearing stress in the rivet is neglected
- all the above
Q18 | If is the maximum allowable bending stress in a tension member whose radius of gyrationis and depth is 2y, the required cross sectional area is given by
- a = my/fr²
- a = my²/fr²
- a = my/fr
- a = my/f²r²
Q19 | The load on a lintel is assumed as uniformly distributed if the height of the masonry above it, isupto a height of
- the effective span
- 1.25 times the effective span
- 1.50 times the effective span
- 2.0 times the effective span
Q20 | Diameter of a rivet hole is made larger than the diameter of the rivet by
- 1.0 mm for rivet diameter upto 12 mm
- 1.5 mm for rivet diameter exceeding 25 mm
- 2.0 mm for rivet diameter over 25 mm
- none of these
Q21 | According to IS: 800-1962, the coefficient of expansion of steel per degree centigrade per unitlength, is taken as
- 0.000008
- 0.000010
- 0.000012
- 0.000014
Q22 | In case of timber structures, the simple bending formula M = fz may be applied for
- rectangular beams up to 300 mm depth
- all rectangular beams
- solid circular beams only
- all square cross-section beams
Q23 | Perforated cover plates are particularly suitable for built up sections consisting of
- channels placed back to back
- channels placed toe to toe
- four angle box section
- all the above
Q24 | Effective length of a column effectively held in position and restrained in direction at both ends, is
- l
- 0.67 l
- 0.85 l
- 1.5 l
Q25 | For rivets in tension with countersunk heads, the tensile value shall be
- reduced by 25 %
- reduced by 33.3%
- increased by 25 %
- increased by 33.3 %