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1. The computation of T section depends on:a) ratio b/bw ( generally the neutral axis passes through the flange, x2cnom

3. If neutral axis is in the web at T section, the section is computed as:a) Rectangular sectionb) As T sectionc) As square section

4. How is determined befffor T section:

a)

w

ieff

effbbb

bbb

21

w,min

sure

b)

w

ieff

effbbb

abbb

21

w,max

c)

w

ieff

effbbb

bbb

2min

21

w,

5. When is used the singly reinforced at T section?a) When


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c) As,min=0.26

7. The position of resistant steel in support to a continuous beam loaded to verticalloads is:

a) To the inferior fiberb) To the superior fiberc) Half at inferior fiber and half to the superior fiber

8. To a continuous beam monolith with the slab, the section of designing in the spanis:a) T section not sureb) Rectangular sectionc) Thin-walled section

9. To a continuous beam the section of designing in the support is:a) T sectionb) Rectangular sectionc) Ring shape section

10.What is the maximum steel percentage As,maxfor beams:a) As,max=0.04Acb) As,max=0.03Acc) As,max=0.045Ac

11.The minimum depth of beams part of frames or girders is:a) L/15 ?b) L/20c) L/8

12.The ratio h/b must be between:a) 13b) 23.5c) 1.5.3

13.For monolith beams the sizes of cross section are usually multiple of:a) 30 mmb) 45 mmc) 50 mm not sure from seminar 2 or 3

14.The steel resistant bars in beam section must at a maximum distance betweenthem of:

a) 200 mmb) 250 mmc) 150 mm

15.In the compression zone of sections from the span must provide:a) Minimum 3 constructive barsb) Minimum 2 constructive barsc) Minimum 1constructive bar

16.Which are the members subjected to bending and shear force?a) Beamsb) Beams and slabsc) Beams and columns

17.How shape has the computed section of the slab:


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a) Rectangular, with b=1000mmb) Rectangular with h/b >2c) T section

18. When a slab is reinforced with resistant reinforcement on two directions:a) When L/l >2b)

When L/bw


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28.For slabs with hf> 400 mm, the maximum distance between bars for resistantreinforcement is:

a) 250 mmb) 330 mmc) 300 mm

29.The maximum distance between bars for repartition reinforcement is:a) Smax=3.5hf250 mm for slabs with hf>200 mmb) Smax=3.5hf300 mmc) Smax=3hf200 mm for slabs with hf300 mm

30.The maximum distance between bars for welded mesh is:a) Smax250 mm for slabs with hf>200 mmb) Smax=3.5hf300 mma) Smax=3.5hf200 mm dt,dl100,150,200mm I thinkc)31.Which is the maximum number of bars in the span of slabs:

a) 10 bars/meterb)

9 bars/meterc) 12 bars/meter

32.Which is the maximum number of bars in the support to slabs:a) 12 bars/meterb) 10 bars/meterc) 11 bars/meter

33.The reinforcement in monolith continuous slabs, using independent bars can be:

a)

b)


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c)

34. Which quantity of reinforcement from the zone of positive moments is

continued beyond the edge of support:a) at least half from the steel area and minimum 4 bars/meter

b) minimum 5 bars

c) at least half from the steel area and minimum 3 bars/meter35. To the one way spaning slab, the resistant steel is placed:

a) parallel with the long size span

b) is placed parallel with the small span of the slab.

c) parallel with both sizes of the slab36. Tension stresses of various inclinations and magnitudes, resulting from shear alone

(at the neutral axis) or from the combined of shear and bending, exists in all parts of the

beam and can impair its integrity if not adequately provided for.What are they:a) principal tensile stresses

b) torsion stresses

c) tangential stresses

37. What type of shear failure is in the fig.:a) bond failure

b) flexural failure

c) shear bond failure

38. What type of shear failure is in the fig.:

a) Flexure failureb) Dowel failurec) Shear failure

39. What type of shear failure is in the fig.:

a) shear compression failure

b) dowel failurec) torsion failure

P P

45

dowel action

P P

crushing concrete


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40. What type of failure is in Fig.?

a) flexural failure

b) dowel strut failurec) diagonal tension failure

41. What type of failure is in Fig.?

a) flexural failure

b) dowel failurec) torsion failure

42. The shear resistance of a member with shear reinforcement is equal to:

a) VRd=VRds+Vti

b) VRd=VRds+Vccdc) VRd=VRds43. When shear reinforcement is not necessary to calculate?

a) VEdVRdcc) VEd=VRds

44. Which are the mechanism of shear transfer?

a) dowel action and aggregate interlockb) dowel action, diagonal stress and uncracked concrete

c) dowel action, aggregate interlock and uncracked concrete

45. what type of shear reinforcement do you know?

a) stirrup and bent-up barb) stirrup and longitudinal bar

c) bent-up bar and longitudinal bar

46. Which figure is correct for transfer of shear force in member with stirrups?

a)

b)

P P

P P


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c)

47. To quantify the behaviour and strength of members with shear reinforcement, which

model is used:

a) thin equivalent wallsb) equivalent truss model

c) arch model

48. The capable shear force for members with stirrups is:a)

b)

d)

49. Which is the model for computation to shear for the member with stirrups?

a) ?

b)

c)

s

zfAV

s

ywsw

s

cot

s

zAV

s

sws

cot

s

ywsw

s

zfAV

cot


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50. How many types of torsion do you know?a) equilibrium torsion and lateral torsionb) compatibility torsion

c) equilibrium torsion and compatibility torsion

51. What type of torsion is in the Fig.?

a) Equilibrium torsionb) Slendernessc) Compatibility torsion

52. What type of torsion is in the Fig.?

a) Equilibrium torsionb) Compatibility torsionc) Buckling

53. The shear stress to a circular member subjected to torsion moment is:

a)

b)

c)

54. The torsion strength of elements with simple sections is computed by:

a) replacing the transversal plain section with equivalent section with thin wallsb) replacing the transversal plain section with truss section

c) replacing the section with equivalentT section

p

tx

I

xM

p

tx

I

M

yI

xM

p

tx


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55. The real member subjected to torsion moment TEd, is considered:

a)As a spatial body type trellis girderb As an equivalent thin walled section

c as a spatial trellis girder,realized of four plan trellis girders

56. The transversal reinforcement (stirrups) is determined:a)

b)

a)57. Angle between compression diagonals and longitudinal steel is limited:

a)

b)c)

58. The longitudinal reinforcement for torsion moment TEdis computed:

a)

b)

c)

59. Torsion links must be:

a) closedb) anchored with hooks

c)closed and anchored with hooks

60. It is recommended that longitudinal steel for torsion to be provided:a) uniformly on perimeter of the section

b) to the top of the section

c) to the bottom of the section

61.What types of columns are presented in the Fig.?

tgfA

T

s

A

ydg

Ed

T

sw

2

tgf

T

s

A

yd

Ed

T

sw

2

ydg

Ed

T

sw

fA

T

s

A

2

5,21 ctg 5,25.1 ctg

32 ctg


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64. At failure the equilibrium equation is:

a) NEd= Acfcd+ Asfydb) NEd= Acfcd+ Asfyd+Ms

c) NEd= Acfcd+ Asfyd+ Atrfw65. The slenderness ratio is defined by:

a)

b)

c)

66. Function of slenderness ratio the columns are:a) short columns, slender column

b)short columns, very short columns

c) short column, slender column, very slender column

67. Area of total reinforcement is obtained from relation:a)

b)

c)

68. the area of reinforcement is function of:a)

b) and

c) , and

69. Minimum sizes of rectangular columns are established from the flexibility condition:

r

lfo

dlfo

r

lo

yd

cdctottots

f

fAA ,

yd

cdctotsf

fAA ,

yd

cdtottots

f

fA ,

h

d

h

d 21

h

d

h

d 21

h

d

h

d 21


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a)

b)

c)

70. Minimum sizes of columns cross section are:

a) 250 mm for reduced chargeb) 250 mm for reduced charge and 300 for the rest

c) 300 mm for all

71. The ratio of sizes for columns is usually:

a) h/b2.5b) h/b3

c) h/b>2.5

72. The minimum percentage of reinforcing for column is obtained from:

a)

b)

c)

73. For seismic area the minimum steel area must respect function the ductility class the

following conditions:a) high (H) Asmin0.01Ac and for medium (M) Asmin0.008Ac

b) Asmin0.01Ac

c) Asmin0.02Ac and (M) Asmin0.01Ac74. The maximum percentage for column reinforcing is:

a) 5%

b)4%c)3%

75.The longitudinal bars are distributed on column section:

a)for polygonal section in each corner onebar

b)for polygonal section each size with two bars in corner and in the midlec)for polygonal section three bars on each size

76. The rectangular and square section of columns is reinforced with:

a) perimetral stirrups

b)supplementary stirrupsc) perimetral and supplementary stirrups, function the sizes of the section

77. The distance between stirrups to columns for high class is smaller than:

a)

140i

f

150i

f

130i

c

yd

Eds A

f

NA 002.0

10.0min,

c

yd

Eds A

f

NA 002.0

20.0min,

Af

NA Eds 002.0

10.0min,

mm

b

d

s o

bl

cl

125

3/

6

ma x,


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b)

c)

78. The distance between stirrups to columns of medium class is smaller than:

a)

b)

c)

79. The spiral for columns must respect the conditions:a)As at least 20% Asl; s>6 mmb) As at least 30%Asl; s>6 mm

c) As at least 25%Asl; s>8 mm

80. Longitudinal bars must be at least in a number of:, (fig. 7.28).

a) 6, min -12 mm for PC-14 mm for OB 37 max : 28 mmb) 8, min -12 mm for PC-16 mm for OB 37 max : 30 mmc) 7, min -14 mm pt. PC-18 mm pt. OB 37 max : 28 mm

81. What means member with pre-tensioned reinforcement?a) the tendons are stressed before placing concrete

b) the tendons are stressed after placing concrete

c) the tendons are stressed outside the member82. Which are the stages in pretensioning?

a) stage 1:concrete is poured; stage 2: steel strands are tensioned; stage 3 strands

are cut.

mm

b

d

so

bl

cl

175

23/

8

max,

mm

b

d

s o

bl

cl

125

5/

8

max,

mm

b

d

s o

bl

cl

150

3/

4

max,

mm

b

d

s o

bl

cl

175

23/

10

ma x,

mm

b

d

s o

bl

cl

190

23/

10

max,


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b) stage 1: steel strands are tensioned; stage 2: concrete is poured; stage 3 strands

are cut.

c) stage 1:concrete is poured; stage 2: steel strands are compressed; stage 3strands are cut.

83. What means transfer?

a) The prestress force acts as an external compression force on the concreteb) The transfer of the force from the concrete to the reinforcementc) The prestress force acts as an external tension force on the concrete

84. Which are the technologies for realizing pretensioning?

a) pre-tensioned on long stands, pre-tensioned in metallic self weight shutteringb) pre-tensioned on short stands, pre-tensioned in metallic shuttering,

pretensioning by steel deflection, direct tensioning on the member

c) pre-tensioned on long stands, pre-tensioned in metallic self weight shuttering,

pretensioning by steel deflection, continuous pretensioning, electrothermal method85. What means member with post-tensioned reinforcement?

a) the tendons are tensioned in the same time with the pouring of concrete

b) the tendons are tensioned after the pouring of concretec) the tendons are tensioned after the pouring of concrete and has acquired its

strength.

86. To prevent the occurrence of large deformations and substantial loss in prestress due

to creep of concrete, EC2 does recommend:a) that compressive stresses should not be allowed to exceed 0.45 fck,0 at transfer

and 0.45fckat service

b) that tensile stress should not exceed 0,2ftk,0 at transfer and 0.40 ftkat servicec) that compressive stresses should not be allowed to exceed 0.40 fck,0 at transfer

and 0.40fckat service

87. For the design of fully prestressed members, in which no cracking of the member is

permitted, the tensile stress may be limited:a) to the compressive strength of the concrete.

b) to the tensile strength of the concrete

c) to the tangential strength of concrete88. In the case of partially prestressed members, in which cracks are allowed to form at

service, stress limits are:

a) not usually specified directly for the service condition, but limits are placed onthe width to which the cracks are allowed to open.

b) usually specified directly for the service condition, limiting the width of cracks

c) usually specified for the service condition, limiting the tensile stress

89. The force applied to a tendon, Pmax (i.e. the force at the active end during tensioning)shall not exceed the following value:

a) Pmax = App,max

b) Pmax = App,max

c) Pmax = ApLp,max90. The concrete compressive stress in the structure resulting from the prestressing forceand other loads acting at the time of tensioning or release of prestress, should be limited

to:

a) c 0,5 fck(t)


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a) the same type of meshes at distances of 100 mm 150 mm. The meshe s are

recommended to be commune for more anchorages.

b) the same type of meshes at distances of 150 mm 250 mm. The meshes arerecommended to be commune for more anchorages.

c) other type of meshes at a distance of 100..150 mm.

99. For members with pre-tensioned steel on a length of lt / 4 (lttransfer length) fromthe end of the member it must provide:a) 5 7 transversal reinforcement (stirrups, spiral, mesh) at equal distance

b) 3 5 transversal reinforcement (stirrups, spiral, mesh) at equal distance.

c) reinforcement (stirrups, spiral, mesh) at 100 mm distance100. On the rest of transfer length it must dispose:

a) closed stirrups with dmin = 6 8 mm, at a distance dmax = 150 mm or

welded mesh.

b) closed stirrups with dmin = 8 10 mmc) welded mesh or stirrups with dmin=1012 mm

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