# Practice Test: Question Set - 08

**1. For steel members exposed to weather and not accessible for repainting, the thickness of steel should not be less than**

- (A) 4.5 mm

- (B) 6 mm

- (C) 8 mm

- (D) 10 mm

**2. The slenderness ratio of a column supported throughout its length by a masonry wall is**

- (A) Zero

- (B) 10

- (C) 100

- (D) Infinity

**3. The main assumption of the method of simple design of steel frame work, is:**

- (A) Beams
are simply supported

- (B) All
connections of beams, girders and trusses are virtually flexible

- (C) Members
in compression are subjected to forces applied at appropriate eccentricities

- (D) All the
above

**4. Outstanding length of a compression member consisting of a channel, is measured as**

- (A) Half of the
nominal width

- (B) Nominal
width of the section

- (C) From the
edge to the first row of rivets

- (D) None of
these

**5. The use of tie plates in laced columns is**

- (A) Prohibited

- (B) Not prohibited

- (C) Permitted at start and end of lacing system
only

- (D) Permitted between two parts of the lacing

**6. According to IS : 800-1962 the permissible bending stress in steel slab plates, is**

- (A) 1500 kg/cm

^{2}

- (B) 1420 kg/cm

^{2}

- (C) 2125 kg/cm

^{2}

- (D) 1890 kg/cm

^{2}

**7. The side thrust**

*T*on the tie rods provided at the end beam of jack arch of rise*R*, is calculated from the formula- (A)

*T*=

*WL*/4

*R*

- (B)

*T*=

*WR*/8

*L*

- (C)

*T*=

*WL*/8

*R*

- (D)

*T*=

*WL*/2

*R*

**8. Intermediate vertical stiffeners in a plate girder need be provided if the depth of web exceeds**

- (A) 50

*t*

- (B) 85

*t*

- (C) 200

*t*

- (D) 250

*t*

**Where ‘**

*t*’ is thickness of web**9. The minimum pitch of rivet holes of diameter**

*d*should not be less than- (A)

*d*

- (B) 1.25

*d*

- (C) 1.5

*d*

- (D) 2.5

*d*

**10. Design of a riveted joint, is based on the assumption:**

- (A) Load
is uniformly distributed among all the rivets

- (B) Shear
stress on a rivet is uniformly distributed over its gross area

- (C) Bearing
stress in the rivet is neglected

- (D) All the
above

**11. For the buildings having a low permeability, the internal wind pressure acting normal to the wall and roof surfaces is taken as**

- (A) Zero

- (B) ± 0.2

*p*

- (C) ± 0.5

*p*

- (D) ± 0.7

*p*

**Where ‘**

*p’*is basic wind pressure**12. If ‘**

*f’*is the maximum allowable bending stress in a tension member whose radius of gyration is ‘*r’*and depth is 2*y*, the required cross sectional area ‘*A’*is given by- (A)

*A*=

*My*/

*fr*

^{2}

- (B)

*A*=

*My*

^{2}/

*fr*

^{2}

- (C)

*A*=

*My*/

*fr*

- (D)

*A*=

*My*/

*f*

^{2}

*r*

^{2}

**13. The load on a lintel is assumed as uniformly distributed if the height of the masonry above it, is up to a height of**

- (A) The
effective span

- (B) 1.25 times
the effective span

- (C) 1.50 times
the effective span

- (D) 2.0 times
the effective span

**14. Maximum pitch of rivets, used in steel stacks, is limited to**

- (A) 6

*t*

- (B) 10

*t*

- (C) 12

*t*

- (D) 16

*t*

**Where ‘**

*t*’ is thickness of thinner plate being connected**15. Diameter of a rivet hole is made larger than the diameter of the rivet by**

- (A) 1.0 mm for
rivet diameter upto 12 mm

- (B) 1.5
mm for rivet diameter exceeding 25 mm

- (C) 2.0 mm for
rivet diameter over 25 mm

- (D) None of
these

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