Find ultimate shear strength (check it for safe against shear failure) if vu is 27.75kn, Loss ratio is 0.8, prestressing force is 182000, area is 31400, breadth is 50 where height is 320, prestressing force is 1.7, fcp = 4.65, ft is 1.7?

if vu is 27.75kn, Loss ratio is 0.8, prestressing force is 182000, area is 31400, breadth is 50 where height is 320, prestressing force is 1.7, fcp = 4.65, ft is 1.7?a) Safeb) Unsafec) Zerod) Collapse

Find minimum section modulus given data is mg is 3.86‚Äö√†√∂‚àö‚â•106, mq is 22.50‚Äö√†√∂‚àö‚â•106, fbr is given as 12 and the loss ratio is 0.8?$

123‚Äö√†√∂‚àö‚â•104

134‚Äö√†√∂‚àö‚â•104

182‚Äö√†√∂‚àö‚â•104

123‚Äö√†√∂‚àö‚â•104

120‚Äö√†√∂‚àö‚â•104

18 + Mcqs in Design Pretensioned Beams in Prestressed Concrete Structures Page 1 McqOptions

1.	Find the deflection due to self weight given that ϕ = 1.6, Ee = 2.6Ece, elastic modulus of concrete is 34×103, gravity is given as 6, self weight is 0.76, Length of the cable is 1000, elastic modulus of concrete is 34×103 , Moment of inertia is 3200×105?
A.	1.66mm
B.	5.3mm
C.	23.4mm
D.	1.02mm
Answer» E.

Discussion

2.	Check for deflection due to prestressing force if given data is Prestressing force is 182×103 eccentricity of cable is 105, Length of the cable is 1000, elastic modulus of concrete is 34×103, Moment of inertia is 3200×105?
A.	9.4
B.	4.5
C.	6.8
D.	9.8
Answer» D. 9.8

Discussion

3.	Find ultimate shear strength (check it for safe against shear failure) if vu is 27.75kn, Loss ratio is 0.8, prestressing force is 182000, area is 31400, breadth is 50 where height is 320, prestressing force is 1.7, fcp = 4.65, ft is 1.7?
A.	Safe
B.	Unsafe
C.	Zero
D.	Collapse
E.	if vu is 27.75kn, Loss ratio is 0.8, prestressing force is 182000, area is 31400, breadth is 50 where height is 320, prestressing force is 1.7, fcp = 4.65, ft is 1.7?a) Safeb) Unsafec) Zerod) Collapse
Answer» B. Unsafe

Discussion

4.	Check for ultimate flexural strength if given Aps is 154mm2, fpu is 1600n/mm2, b is 160mm, fcu is 50n/mm2and diameter is 265mm?
A.	9.65
B.	0.116
C.	3.442
D.	2.345
Answer» C. 3.442

Discussion

5.	Find the supporting force if given characteristic strength is -1, moment of gravity is 3.86×106, zt = 230×104?
A.	-2.68n/mm2
B.	-3.45n/mm2
C.	-1.23n/mm2
D.	13.56n/mm2
Answer» B. -3.45n/mm2

Discussion

6.	Find minimum section modulus given data is mg is 3.86×106, mq is 22.50×106, fbr is given as 12 and the loss ratio is 0.8?
A.	134×104
B.	182×104
C.	123×104
D.	120×104
Answer» C. 123×104

Discussion

7.	Find minimum range of stresses if fct is 15n/mm2, fcw is 17, ftw is zero, fu is -1n/mm2, ɳ is 0.8?
A.	12 and 18n/mm2
B.	13 and 14n/mm2
C.	12 and 15n/mm2
D.	10 and 16n/mm2
Answer» B. 13 and 14n/mm2

Discussion

8.	Design a pretensioned roof pull-in to suit the data Fcu, concrete cube strength = 50n/mm2, effective span = 6m, applied load = 5kn/m, dead load = 1.4, live load = 1.6, β = 0.125, k = 7.5, Dc = 2400, and determine ultimate moment and shear?
A.	42 and 27.75
B.	54 and 27.75
C.	34 and 27.75
D.	20 and 28
Answer» B. 54 and 27.75

Discussion

9.	CHECK_FOR_DEFLECTION_DUE_TO_PRESTRESSING_FORCE_IF_GIVEN_DATA_IS_PRESTRESSING_FORCE_IS_182‚ÄÖ√†√∂‚ÀÖ‚Â•10³_ECCENTRICITY_OF_CABLE_IS_10⁵,_LENGTH_OF_THE_CABLE_IS_1000,_ELASTIC_MODULUS_OF_CONCRETE_IS_34‚ÄÖ√†√∂‚ÀÖ‚Â•10³,_MOMENT_OF_INERTIA_IS_3200‚ÄÖ√†√∂‚ÀÖ‚Â•10⁵??$#
A.	9.4
B.	4.5
C.	6.8
D.	9.8
Answer» D. 9.8

Discussion

10.	Find_the_deflection_due_to_self_weight_given_that_‚âà√¨‚àö√ò_=_1.6,_E_e_=_2.6E_ce,_elastic_modulus_of_concrete_is_34‚Äö√†√∂‚àö‚â•10³,_gravity_is_given_as_6,_self_weight_is_0.76,_Length_of_the_cable_is_1000,_elastic_modulus_of_concrete_is_34‚Äö√†√∂‚àö‚â•10³_,_Moment_of_inertia_is_3200‚Äö√†√∂‚àö‚â•10⁵?$#
A.	1.66mm
B.	5.3mm
C.	23.4mm
D.	1.02mm
Answer» E.

Discussion

11.	Find ultimate shear strength (check it for safe against shear failure) if v_u is 27.75kn, Loss ratio is 0.8, prestressing force is 182000, area is 31400, breadth is 50 where height is 320, prestressing force is 1.7, f_cp = 4.65, f_t is 1.7?
A.	Safe
B.	Unsafe
C.	Zero
D.	Collapse
Answer» B. Unsafe

Discussion

12.	Check for ultimate flexural strength if given A_ps is 154mm², f_pu is 1600n/mm², b is 160mm, f_cu is 50n/mm²and diameter is 265mm?
A.	9.65
B.	0.116
C.	3.442
D.	2.345
Answer» C. 3.442

Discussion

13.	Find the supporting force if given characteristic strength is -1, moment of gravity is 3.86‚Äö√†√∂‚àö‚â•10⁶, z_t = 230‚Äö√†√∂‚àö‚â•10⁴?$
A.	-2.68n/mm<sup>2</sup>
B.	-3.45n/mm<sup>2</sup>
C.	-1.23n/mm<sup>2</sup>
D.	13.56n/mm<sup>2</sup>
Answer» B. -3.45n/mm<sup>2</sup>

Discussion

14.	Find minimum section modulus given data is mg is 3.86‚Äö√†√∂‚àö‚â•10⁶, m_q is 22.50‚Äö√†√∂‚àö‚â•10⁶, f_br is given as 12 and the loss ratio is 0.8?$
A.	134‚Äö√†√∂‚àö‚â•10<sup>4</sup>
B.	182‚Äö√†√∂‚àö‚â•10<sup>4</sup>
C.	123‚Äö√†√∂‚àö‚â•10<sup>4</sup>
D.	120‚Äö√†√∂‚àö‚â•10<sup>4</sup>
Answer» C. 123‚Äö√†√∂‚àö‚â•10<sup>4</sup>

Discussion

15.	Find minimum range of stresses if f_ct is 15n/mm², f_cw is 17, f_tw is zero, f_u is -1n/mm², ‚Äö√Ñ¬∂‚Äö√¢‚Ä¢ is 0.8?$
A.	12 and 18n/mm<sup>2</sup>
B.	13 and 14n/mm<sup>2</sup>
C.	12 and 15n/mm<sup>2</sup>
D.	10 and 16n/mm<sup>2</sup>
Answer» B. 13 and 14n/mm<sup>2</sup>

Discussion

16.	Find the approximate thickness of web if b is 0.5d, d is 270mm, d/h ratio is 0.85, h is 315mm, adopt effective depth, d = 275mm overall depth , h is 320mm, width of flange of 160mm and Average thickness of flange is 70mm since sloping flanges are used, increases the flange thickness by 20 percent?
A.	45mm
B.	43mm
C.	41mm
D.	42mm
Answer» C. 41mm

Discussion

17.	Design cross sectional dimensions of pretensioned roof pull given that b is 0.5d?
A.	250
B.	260
C.	270
D.	280
Answer» D. 280

Discussion

18.	Design a pretensioned roof pull-in to suit the data F_cu, concrete cube strength = 50n/mm², effective span = 6m, applied load = 5kn/m, dead load = 1.4, live load = 1.6, ‚âà√≠‚Äö√¢¬ß = 0.125, k = 7.5, Dc = 2400, and determine ultimate moment and shear?
A.	42 and 27.75
B.	54 and 27.75
C.	34 and 27.75
D.	20 and 28
Answer» B. 54 and 27.75

Discussion

Explore topic-wise MCQs in Prestressed Concrete Structures.

Find the deflection due to self weight given that ϕ = 1.6, Ee = 2.6Ece, elastic modulus of concrete is 34×103, gravity is given as 6, self weight is 0.76, Length of the cable is 1000, elastic modulus of concrete is 34×103 , Moment of inertia is 3200×105?

Check for deflection due to prestressing force if given data is Prestressing force is 182×103 eccentricity of cable is 105, Length of the cable is 1000, elastic modulus of concrete is 34×103, Moment of inertia is 3200×105?

Find ultimate shear strength (check it for safe against shear failure) if vu is 27.75kn, Loss ratio is 0.8, prestressing force is 182000, area is 31400, breadth is 50 where height is 320, prestressing force is 1.7, fcp = 4.65, ft is 1.7?

Check for ultimate flexural strength if given Aps is 154mm2, fpu is 1600n/mm2, b is 160mm, fcu is 50n/mm2and diameter is 265mm?

Find the supporting force if given characteristic strength is -1, moment of gravity is 3.86×106, zt = 230×104?

Find minimum section modulus given data is mg is 3.86×106, mq is 22.50×106, fbr is given as 12 and the loss ratio is 0.8?

Find minimum range of stresses if fct is 15n/mm2, fcw is 17, ftw is zero, fu is -1n/mm2, ɳ is 0.8?

Design a pretensioned roof pull-in to suit the data Fcu, concrete cube strength = 50n/mm2, effective span = 6m, applied load = 5kn/m, dead load = 1.4, live load = 1.6, β = 0.125, k = 7.5, Dc = 2400, and determine ultimate moment and shear?

Find ultimate shear strength (check it for safe against shear failure) if vu is 27.75kn, Loss ratio is 0.8, prestressing force is 182000, area is 31400, breadth is 50 where height is 320, prestressing force is 1.7, fcp = 4.65, ft is 1.7?

Check for ultimate flexural strength if given Aps is 154mm2, fpu is 1600n/mm2, b is 160mm, fcu is 50n/mm2and diameter is 265mm?

Find the supporting force if given characteristic strength is -1, moment of gravity is 3.86‚Äö√†√∂‚àö‚â•106, zt = 230‚Äö√†√∂‚àö‚â•104?$

Find minimum section modulus given data is mg is 3.86‚Äö√†√∂‚àö‚â•106, mq is 22.50‚Äö√†√∂‚àö‚â•106, fbr is given as 12 and the loss ratio is 0.8?$

Find minimum range of stresses if fct is 15n/mm2, fcw is 17, ftw is zero, fu is -1n/mm2, ‚Äö√Ñ¬∂‚Äö√¢‚Ä¢ is 0.8?$

Find the approximate thickness of web if b is 0.5d, d is 270mm, d/h ratio is 0.85, h is 315mm, adopt effective depth, d = 275mm overall depth , h is 320mm, width of flange of 160mm and Average thickness of flange is 70mm since sloping flanges are used, increases the flange thickness by 20 percent?

Design cross sectional dimensions of pretensioned roof pull given that b is 0.5d?

Design a pretensioned roof pull-in to suit the data Fcu, concrete cube strength = 50n/mm2, effective span = 6m, applied load = 5kn/m, dead load = 1.4, live load = 1.6, ‚âà√≠‚Äö√¢¬ß = 0.125, k = 7.5, Dc = 2400, and determine ultimate moment and shear?

Find ultimate shear strength (check it for safe against shear failure) if v_u is 27.75kn, Loss ratio is 0.8, prestressing force is 182000, area is 31400, breadth is 50 where height is 320, prestressing force is 1.7, f_cp = 4.65, f_t is 1.7?

Check for ultimate flexural strength if given A_ps is 154mm², f_pu is 1600n/mm², b is 160mm, f_cu is 50n/mm²and diameter is 265mm?

Find the supporting force if given characteristic strength is -1, moment of gravity is 3.86‚Äö√†√∂‚àö‚â•10⁶, z_t = 230‚Äö√†√∂‚àö‚â•10⁴?$

Find minimum section modulus given data is mg is 3.86‚Äö√†√∂‚àö‚â•10⁶, m_q is 22.50‚Äö√†√∂‚àö‚â•10⁶, f_br is given as 12 and the loss ratio is 0.8?$

Find minimum range of stresses if f_ct is 15n/mm², f_cw is 17, f_tw is zero, f_u is -1n/mm², ‚Äö√Ñ¬∂‚Äö√¢‚Ä¢ is 0.8?$

Design a pretensioned roof pull-in to suit the data F_cu, concrete cube strength = 50n/mm², effective span = 6m, applied load = 5kn/m, dead load = 1.4, live load = 1.6, ‚âà√≠‚Äö√¢¬ß = 0.125, k = 7.5, Dc = 2400, and determine ultimate moment and shear?