PCI Level 1 & 2 with all Correct & 100% Verified
Answers |Latest Version |Already Graded A+
(Ch. 1) A number of principal factors in quality control are mentioned in this chapter. Name four
✔Correct Answer-1. Commitment of management to quality
2. Qualified personnel for design, production, and inspection
3. Testing and Inspection of all materials
4. Accurate, clear, and complete shop DWGs.
(Ch. 1) Inspection and recordkeeping cover many areas in production. Name four ✔Correct
Answer-1. Tensioning
2. ID, Examine, Accept, and plant testing of materials and sub assemblies.
3. Beds and forms prior to concreting
4. Member dimensions and strand/rebar position and type.
(Ch. 2) Embedments made with headed studs should be reviewed and checked when placed for four
different items or conditions: ✔Correct Answer-1. Stud diameter/size
2. Ceramic ferrules removed to inspect weld
3. Plate orientation
4. Security to form
5. Coating
(Ch. 2) Quality control should routinely inspect beds for several things. Name four: ✔Correct
Answer-1. Cracked welds
2. Abutment movement/damage
3. Bent plates
4. Loose clamps
5. Offset form joints.
Minimum concrete temp during initial curing? ✔Correct Answer-50 deg. F
(Ch. 3) How are fine and coarse aggregates defined by the standard (ASTM C33) and how does a
plant check these criteria ✔Correct Answer-Gradation
Check visually and with monthly gradation tests from supplier
Particle size distribution and FM
(3) Applicable ASTM for headed steel stud material? ✔Correct Answer-ASTM A-108
(3) When evaluating a new source for coarse aggregate or if your supplier is changing his particular
source, what testing should be performed, if any, on the aggregate material? ✔Correct Answer-
Gradation, SG, absorption, abrasion, reactivity, soundness, organics, and deleterious.
(3) Name the types of admixtures identified as HRWA, what is the general spec? ✔Correct Answer-
Type F and G superplasticizers
ASTM C-494
(3) Name five advantages of pozzolans ✔Correct Answer-1. Reduce cement content
2. Lowers heat of hydration
3. Permeability
, 4. Reactivity
5. Plasticity
(4) Name five procedures to prevent plastic shrinkage ✔Correct Answer-1. Cover/shade aggregates
2. Replace mix water with ice
3. Moist/cool burlap
4. Set-retarding admixtures
5. Shade product surfaces
(4) The maximum concrete temperature at placement should be ✔Correct Answer-95 deg. F
(4) ASTM C-403 is what ✔Correct Answer-ASTM C-403:
Time setting of concrete mixtures by penetration resistance
(4) When not employing accelerated curing methods, concrete curing involves controlling what two
factors for the concrete? ✔Correct Answer-Moisture and heat retention
(4) Concrete strength gain during the curing period falls into three stages. Define those stages as to
the strength gains that can be expected and the amount of time that each stage entails: ✔Correct
Answer-1. Preset stage: 3-5 hrs to reach 500 psi
2. Rapid strength gain: 8 more hrs, 500-700 psi/hr
3. Moderate strength gain: 8-12 more hrs, 50-100 psi/hr
(5) Bar cover is generally equal to or greater than ???? x the size of the aggregate top size?
✔Correct Answer-1.33
(5) ASTM A775 is for what ✔Correct Answer-Epoxy-coated rebar
(5) ASTM A767 is for what ✔Correct Answer-Galvanized bar bending
(5) If the inside diameter of the WWF bend is smaller than 8 wire diameters (dw), the bend shall be
located at least how many wire diameters from the nearest welded cross wire? ✔Correct Answer-4
dw
(5) What are the minimum bend diameters?
1) WWF = W6 or smaller
2) Larger than W6 ✔Correct Answer-1) D greater or equal to 2 dw
2) greater than 4 dw
(5) Elongation is measured to the nearest ??? inch for beds greater than 50'?
less than 50'? ✔Correct Answer-L > 50' = 1/4"
L = 50 or L < 50' = 1/8"
If the concrete temperature is greater than the strand temperature, the force and elongation should
be increased or decreased?
ie: 70 deg. concrete and 40 deg. strand ✔Correct Answer-Increased
70 - 40 = 30
= 3% increase in stressing force and elongation
Answers |Latest Version |Already Graded A+
(Ch. 1) A number of principal factors in quality control are mentioned in this chapter. Name four
✔Correct Answer-1. Commitment of management to quality
2. Qualified personnel for design, production, and inspection
3. Testing and Inspection of all materials
4. Accurate, clear, and complete shop DWGs.
(Ch. 1) Inspection and recordkeeping cover many areas in production. Name four ✔Correct
Answer-1. Tensioning
2. ID, Examine, Accept, and plant testing of materials and sub assemblies.
3. Beds and forms prior to concreting
4. Member dimensions and strand/rebar position and type.
(Ch. 2) Embedments made with headed studs should be reviewed and checked when placed for four
different items or conditions: ✔Correct Answer-1. Stud diameter/size
2. Ceramic ferrules removed to inspect weld
3. Plate orientation
4. Security to form
5. Coating
(Ch. 2) Quality control should routinely inspect beds for several things. Name four: ✔Correct
Answer-1. Cracked welds
2. Abutment movement/damage
3. Bent plates
4. Loose clamps
5. Offset form joints.
Minimum concrete temp during initial curing? ✔Correct Answer-50 deg. F
(Ch. 3) How are fine and coarse aggregates defined by the standard (ASTM C33) and how does a
plant check these criteria ✔Correct Answer-Gradation
Check visually and with monthly gradation tests from supplier
Particle size distribution and FM
(3) Applicable ASTM for headed steel stud material? ✔Correct Answer-ASTM A-108
(3) When evaluating a new source for coarse aggregate or if your supplier is changing his particular
source, what testing should be performed, if any, on the aggregate material? ✔Correct Answer-
Gradation, SG, absorption, abrasion, reactivity, soundness, organics, and deleterious.
(3) Name the types of admixtures identified as HRWA, what is the general spec? ✔Correct Answer-
Type F and G superplasticizers
ASTM C-494
(3) Name five advantages of pozzolans ✔Correct Answer-1. Reduce cement content
2. Lowers heat of hydration
3. Permeability
, 4. Reactivity
5. Plasticity
(4) Name five procedures to prevent plastic shrinkage ✔Correct Answer-1. Cover/shade aggregates
2. Replace mix water with ice
3. Moist/cool burlap
4. Set-retarding admixtures
5. Shade product surfaces
(4) The maximum concrete temperature at placement should be ✔Correct Answer-95 deg. F
(4) ASTM C-403 is what ✔Correct Answer-ASTM C-403:
Time setting of concrete mixtures by penetration resistance
(4) When not employing accelerated curing methods, concrete curing involves controlling what two
factors for the concrete? ✔Correct Answer-Moisture and heat retention
(4) Concrete strength gain during the curing period falls into three stages. Define those stages as to
the strength gains that can be expected and the amount of time that each stage entails: ✔Correct
Answer-1. Preset stage: 3-5 hrs to reach 500 psi
2. Rapid strength gain: 8 more hrs, 500-700 psi/hr
3. Moderate strength gain: 8-12 more hrs, 50-100 psi/hr
(5) Bar cover is generally equal to or greater than ???? x the size of the aggregate top size?
✔Correct Answer-1.33
(5) ASTM A775 is for what ✔Correct Answer-Epoxy-coated rebar
(5) ASTM A767 is for what ✔Correct Answer-Galvanized bar bending
(5) If the inside diameter of the WWF bend is smaller than 8 wire diameters (dw), the bend shall be
located at least how many wire diameters from the nearest welded cross wire? ✔Correct Answer-4
dw
(5) What are the minimum bend diameters?
1) WWF = W6 or smaller
2) Larger than W6 ✔Correct Answer-1) D greater or equal to 2 dw
2) greater than 4 dw
(5) Elongation is measured to the nearest ??? inch for beds greater than 50'?
less than 50'? ✔Correct Answer-L > 50' = 1/4"
L = 50 or L < 50' = 1/8"
If the concrete temperature is greater than the strand temperature, the force and elongation should
be increased or decreased?
ie: 70 deg. concrete and 40 deg. strand ✔Correct Answer-Increased
70 - 40 = 30
= 3% increase in stressing force and elongation
