MCQs of Design of plate girders (Design of Steel Structures - 2180610)

Design of Steel Structures (2180610) MCQs

MCQs of Design of plate girders

Showing 11 to 20 out of 40 Questions

11.

Which of the statement is not true about intermediate stiffeners?

(a)	They reduce shear capacity of web.
(b)	They improve shear capacity of web.
(c)	They can be used to develop tension field action.
(d)	Their main purpose is to provide stiffness to the web.

12.

The depth-to-thickness ratio of web connected to flanges along one longitudinal edge only when transverse stiffeners are not provided is _____ to meet serviceability criteria.

(a)	> 180ε
(b)	≥ 90ε
(c)	≤ 90ε
(d)	> 90ε

13.

The depth-to-thickness ratio of web when only transverse stiffeners are provided and 3d ≥ c ≥d, where c is clear distance between stiffeners and d is depth of web is_____ to meet serviceability criteria

(a)	≤ 200 $ε_{w}$
(b)	≥ 200 $ε_{w}$
(c)	> 200 $ε_{w}$
(d)	≤ 400 $ε_{w}$

14.

The depth-to-thickness ratio of web when only transverse stiffeners are provided and c < 0.74d, where c is clear distance between stiffeners and d is depth of web is_____ to meet serviceability criteria.

(a)	≤ 200 $ε_{w}$
(b)	≥ 270 $ε_{w}$
(c)	> 200 $ε_{w}$
(d)	≤ 270 $ε_{w}$

15.

What is the range of c to meet serviceability criteria when transverse and longitudinal stiffeners are provided at one level only, at 0.2d from compression flange and c/

t_{w}

≤ 250

ε_{w}

(a)	c < 0.74d
(b)	0.74d ≤ c ≤ d
(c)	c ≥ d
(d)	c > 2d

16.

When second longitudinal stiffener is provided, d/

t_{w}

to meet serviceability criteria is

(a)	≤ 400 $ε_{w}$
(b)	≥ 400 $ε_{w}$
(c)	> 800 $ε_{w}$
(d)	≤ 800 $ε_{w}$

17.

When a plate girder bends, vertical compression in web is due to

(a)	Downward vertical component of compression flange bending stress only.
(b)	Downward vertical component of tension flange bending stress only.
(c)	Downward vertical component of compression flange and upward vertical component of tension flange bending stress.
(d)	Upward vertical component of compression flange and downward vertical component of tension flange bending stress.

18.

The d/

t_{w}

should be ___ to avoid buckling of compression flange into web when transverse stiffeners are not provided

(a)	≥ 500 ${ε_{f}}^{2}$
(b)	≤ 345 ${ε_{f}}^{2}$
(c)	≥ 345 ${ε_{f}}^{2}$
(d)	≤ 500 ${ε_{f}}^{2}$

19.

When only transverse stiffeners are provided and d/

t_{w}

< 345

ε_{f}

to meet compression flange buckling criteria, the range of c should be

(a)	c ≥ 4.5d
(b)	c > 3d
(c)	c > 1.5d
(d)	c < 1.5d

20.

The optimum depth of web of plate girder is given by

(a)	${(k / f_{y})}^{0.33}$
(b)	$(M_{z} k / f_{y})$
(c)	${(M_{z} k / f_{y})}^{0.33}$
(d)	${(M_{z} k / f_{y})}^{2}$

Showing 11 to 20 out of 40 Questions