Study Guide 4 Flashcards

1
Q

1) Most Reinforcing steel must be hot-rolled new billet, intermediate grade, and deformed to conform to:

A, ASTM Designation Grade 40
B, ASTM Designation Grade 40 and 60
C, ASTM Designation A15 and A305
D, A & B

A

C, ASTM Designation A15 and A305

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2
Q

2) Reinforcing Steel is given a __________ test.

A, Tensile.
B. Bend.
C, Compression.
D, Strength.

A

B, Bend.

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3
Q

3) The Steel is placed in a testing machine and pulled apart to measure:

A, Tensile Strength.
B, Yield Point.
C, Elongation.
D, All of the above.

A

D, All of the above.

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4
Q

4) Reinforcing Steel is divided into grades that are equal to the strength at the:

A, Yield Point.
B, Tensile Point.
C, Breaking Point.
D, Elongation Point.

A

B, Tensile Point.

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5
Q

5) Reinforced Steel is manufactured for maximum tensile strength with reservation for bending.
True or False

A

True

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6
Q

6) Splice requirements depend upon:

A, The design strength of the concrete
B, The grade of steel.
C, The length of the bar.
D, A & B

A

D, A & B

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7
Q

7) Lap top bar at mid span and bottom bars over the support.

True or False

A

True

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8
Q

8) Thirty or Thirty-Two bar diameters is becoming standard.

True or False

A

True

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9
Q

9)  A reinforced concrete beam is affected by the distance between supports and:

A, The depth of the beam.
B, The spacing of the bar diameter.
C, The thickness of the bar diameter.
D, The load placed upon the beam.

A

D, The load placed upon the beam.

My note: Remember compression.

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10
Q

10) The horizontal steel in a beam resist the _______ forces while the concrete resists the compression forces.

A, Tensile.
B, Twisting.
C, Shearing.
D. Breaking.

A

A, Tensile.

My note: I understand tension to be the correct answer to this question but go with it.

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11
Q

11) The horizontal Steel in a beam should be:

A, Centered.
B, Near the bottom.
C, Near the bottom at mid span and near the top at supports.
D, Near the top at mid span and near the bottom that supports.

A

C, Near the bottom at mid span and near the top at supports.

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12
Q

12) Stirrups are used to resist a diagonal force that is at a maximum.

A, Near the end.
B, Near the top.
C, Near the supports.
D, Near mid span.

A

C, Near the supports.

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13
Q

13) One of the most important considerations in the design of a column is:

A, The diameter.
B, The unsupported length.
C, It’s with.
D, It’s base support.

A

B, The unsupported length.

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14
Q

14) A column having a length less than ten times the least width is a:

A, Pier.
B, Post.
C, Short Column.
D, Long Column.

A

C, Short Column.

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15
Q

15) A column have any length greater than ten times the least width is classified as a:

A, Long Column.
B, Post.
C, Piling.
D, Short Column. 

A

A, Long Column.

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16
Q

16) For economy, most columns are designed to be:

A, Short.
B, Long.
C, Flexible.
D, Yielding.

A

A, Short

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17
Q

17) The two most common types of reinforcing steel and concrete columns are:

A, Vertical bars with ties and vertical bars with spiral steel.
B, Bowing bars and stress legs. 
C, Horizontal and Vertical.
D, A & B

A

A, Vertical bars with ties and vertical bars with spiral steel.

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18
Q

18)  Usually, the square column will be designed with square ties, and the round column with spiral steel.

True or False

A

True

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19
Q

19) The spacing of the ties of a tide column (square) is usually limited to 16 times the diameter of the vertical bar or 48 times the diameter of the tie. This would normally be ten inches for a #2 tie on a #5 vertical or _______ inches for a #2 tie on a #6 bar.

A, 12”
B, 13”
C, 14”
D, 16”

A

A, 12”

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20
Q

20) The spiral should extend from the floor level in any story or from the top of the footing to the level of the lowest horizontal reinforcement in:

A, Slab.
B, Drop Panel.
C, Beam above.
D, Any of the above. 

A

D, Any of the above.

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21
Q

21) The height (or length) of a spiral is defined as the distance out-to-out of coils, including finish turns top and bottom, with a tolerance of plus or minus ____ inches.

A, 1”
B, 1 1/2”
C, 2”
D, 2 - 1/2”

A

B, 1 1/2”

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22
Q

22) Estimate _____ extra turns at each end of the spiral for finish.

A, 1 1/2”
B, 2”
C, 3”
D, 2 1/2”

A

A, 1 1/2”

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23
Q

23) If spirals must be spliced the ACI building code requires either a tension lab splice of _______ diameter minimum but not less than 12” or by welding.

A, 24”
B, 30”
C, 36”
D, 48”

A

D, 48

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24
Q

24) The out-to-out diameter of spiral should be ______ inches less than the outside dimension of the column.

A, 1”
B, 2”
C, 3”
D, 4”

A

C, 3”

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25
Q

25)  The diameter of column spirals is the _________ measurement of the bar or wire.

A, Outside to Inside.
B, Inside to Outside.
C, Inside to Inside.
D, Outside to Outside.

A

D, Outside to Outside.

26
Q

26) The clear spacing between turns and any spiral should not exceed ____ inches nor be less than 1” pitch is to be very by 1/4 inches intervals.

A, 3”
B, 4”
C, 5”
D, 6”

A

A, 3”

27
Q

27) Standard fabricating equipment limits minimum core diameter as:

A, 9” Core diameter use number _____ bar.
B, 12” Core diameter use number _____ bar.
C, 15” Core diameter use number _____ bar.

A

A, 3”
B, 4”
C, 5”

28
Q

28) The ACI building code requires that spacers be furnished as following: “ number of spacers per spiral”

 Use notes provided

A

Use notes provided

29
Q

29) The lab for a spiral steel should be blank turn(s) .

A, 2
B, 1 - 1/2
C, 3
D, 3/4

A

B, 1 - 1/2

30
Q

30) Column bars larger than #11 should be _____ welded.

A, Beveled.
B, Angle.
C, Butt.
D, Double Grooved.

A

C, Butt.

31
Q

31) The “minimum” lap for vertical steel in a column is.

A, 60 Bar diameters.
B, 40 Bar diameters.
C, 30 Bar diameters.
D, 27 Bar diameters

A

D, 27 Bar diameters

32
Q

32) The most common concrete floor slab systems are:

A, One-way slab and beam.
B, Two-way slab and beam.
C, Flat slab and joist or ribbed.
D, All of the above.

A

D, All of the above.

33
Q

33) Most slabs are designed similarly to beams side-by-side.

True or False

A

True

34
Q

34) In one-way slab the main steel runs from support to support and the temperature steel runs:

A, Perpendicular.
B, Parallel.
C, Parallel to the support.
D, A or B 

A

C, Parallel to the support.

35
Q

35) In a two-way slab, the main steel runs in two directions and is:

A, Tied at the ends.
B, Supported on four sides by beams.
C, Tied on the supporting sides.
D, All the above. 

A

B, Supported on four sides by beams.

36
Q

36) A flat slab has no beams or girders, and the steel runs in two directions. The slab is supported by columns.

True or False

A

True

37
Q

37) A joist floor (pan slab) consist of many small joist running from beam to beam. The joists are usually reinforce with a bar of steel near the _____ , and the slab reinforce with a _______.

A, Center, welded wire mesh.
B, Top, plane bars.
C, Bottom, deformed bars.
D, Bottom, welded wire mesh.

A

D, Bottom, welded wire mesh.

38
Q

38) Cold-drawn wire has no definitive yield point, possibly allowing a reduction in steel with the use of welded wire fabric.

True or False

A

True

39
Q

39) Mesh 06 gauge or higher gauge is difficult to support with chains or blocks so when pouring concrete mesh is:

A, Set on top of the concrete to settle.
B, Usually pull into position.
C, Set in the pour area before pouring.
D, Set in place after the first (1”) depth of pour. 

A

B, Usually pull into position.

40
Q

40) The most important consideration in the welding and reinforcing the steel is the _______ of the steel being used.

A, Carbon Content.
B, Temperature Control.
C, Manganese Content.
D, A & B

A

C, Manganese Content.

41
Q

41) Reinforcing bars may be either:

A, Butt Welded.
B, Lap Welded.
C, Both bars welded to a structural shape.
D, All of the above.

A

D, All of the above.

42
Q

42) In butt welding both bars are prepared for welding.

True or False

A

True

43
Q

43*) For vertical splices one bar is square cut and the other bar is: (see fig. 1A and 1B page 54)

A, Single Beveled.
B, Doble Beveled.
C, Square Cut.
D, A or B

A
  • D, A or B

Note: It could be one or the other. The difference is one or two 45 degree angle.

44
Q

44) For horizon splices, bot bars are beveled with:

A, Single Bevels (Single Vee)
B, Double Bevels (Double Vee)
C, Single Bevel (Each 45°)
D, Double Bevels (Each 60°)
E) A or B
A

E) A or B

Note: See page 54; Note the 45° X 60° angles.

45
Q

45) Pre-stressing consists of stretching cables, then forming, pouring concrete, and releasing the cable so that they apply a stress to the concrete.

True or False

A

True

46
Q

46) Post-tensioning consists of pouring the concrete around cables that are position but not tensioned, and stressing the cables:

A, Before the concrete has gained straight.
B, Well the concrete is gaining strength.
C, After the concrete has gain strength.
D, None of the above. 

A

C, After the concrete has gain strength.

47
Q

47) The concrete can either bond to the concrete or be anchored at the ends to apply there stress to the concrete.

True or False

A

True

48
Q

48) The _______ tie is normally use in flat horizontal work.

A, Snap Tie.
B, Single Tie.
C, Wrap Tie.
D, A or B

A

D, A or B

49
Q

49) The ______ is very simple and is wrapped ones around the two crossing bars in a diagonal manner with two ends on top. (See fig. A, page 53)

A, A snap or single tie.
B, Saddle or wrap tie.
C, Figure 8.
D, A or B

A

A, A snap or single tie.

50
Q

50) The type of tire required for question # 52 and # 53 is also use when tying bars in caissons, at times using no. 15 or no. 14 gauge wire.

True or False

A

True

51
Q

51*) The snap or single tie may be made stronger by doubling the wire rather than using heavier wire.

True or False

A

*True.

The tie would then be called a double snap tie or single tie double wire. (See detail 9 fig. A page 53)

52
Q

(52*) A tie normally use when tying wall reinforcement, holding the bars in position so that the horizontal bars do not shift during the construction progress or concreting.

A, Wrap a Snap.
B, Saddle.
C, Wrap and Saddle.
D, Figure 8

A

A, Wrap a Snap.

My note: We called this a “snap with a wrap” 

53
Q

53) The above tie is made by wrapping the wire 1 - 1/2 times around the _____ bar, and then diagonally around the ______ bar?

A, Intersecting, Vertical.
B, Horizontal, Diagonal.
C, Vertical, Intersecting Horizontal.
D, A or B

A

C, Vertical, Intersecting Horizontal.

54
Q

54) A saddle tie is ______ then the other two just describe, though it is favored in certain localities.

A, More complicated.
B, Less complicated.
C, Easer.
D, Not Complicated. 

A

A, More complicated.

55
Q

55*) The saddle tie is use particularly for tying of ________ to haul hook ends oh bars in position.

A, Column Ties.
B, Footing or other mats.
C, Wall bars away from forms.
D, A & B

A
  • B

It is used also for securing column ties to vertical bars. (See detail # 9 fig. C page 53) 

56
Q

56*) A tie sometimes used to secure heavy mats that are lifted by crane and for securing column ties to verticals when there is a tendency for a great deal of strain on the ties.

A, Wrap Tie.
B, Wrap and Snap.
C, Nailhead Tie.
D, Wrap and Saddle.,

A

D, Wrap and Saddle.,

57
Q

57*) A figure 8 tie is occasionally used in walls, instead of the ______ but is not practically recommended because of the time required to make the tie.

A, Wrap and Snap.
B, Saddle.
C, Wrap Saddle.
D, Snap.

A
  • A, Wrap and Snap

My note: we called this one a “snap and a wrap”. (See detail # 9 fig. E page 53)

58
Q

58*) When nails are employed as spreaders to hold wall bars away from the form, this system is known as.

A, Bulkhead.
B, Nailhead.
C, Sheepshead.
D. Pin Tie.

A

B, Nailhead.

(referred to tie method fig.10 page 53) 

59
Q

59) In most areas tie wire is available in ______ pound coils.

A, 1 to 2 Lbs.
B, 2 to 3 Lbs.
C, 3 to 4 Lbs
D, 4 to 5 Lbs.

A

C, 3 to 4 Lbs

60
Q

60) Wire use for tying reinforcing bar is usually:

A, No. 14 Gauge Black, Soft Annealed Wire.
B, No. 16 Gauge Black, Rigid Annealed Wire.
C, No. 16 Gauge Black, Soft Annealed Wire.
D, No. 16 Gauge Double Black Soft Annealed Wire.

A

C, No. 16 Gauge Black, Soft Annealed Wire.

61
Q

61) When heavier gauge wire is used for tying bars in heavily reinforced caissons or walls to maintain the proper position of the horizontal reinforcement ______ will be used.

A, No. 15
B, No. 14
C, 16 Doubled.
D, Any of the above.

A

D, Any of the above.

My note: I like C because it’s softer and easier on your wrist.