LAZO MANUAL REVIEWER 2 (CALCULATION)

Given the following data from Marshall Stability Test, calculate the Optimum Asphalt Content

Air Voids = 4.50%
VMA = 12%
Maximum Stability = 4.60
Maximum Unit Weight = 5.67
4% Air Voids = 5.78

A. 5.35
B. 5.55
C. 5.53
D. 5.38

A

If the dry stability is 1,300 psi, wet stability is 1,250 psi, and air voids of 3%, what is the index of retained strength (IRS)?

A. 104%
B. 96.25%
C. 3.85%
D. 96.15%

D

What is your evaluation:

If the dry stability is 1,300 psi, wet stability is 1,250 psi, and air voids of 3%, what is the index of retained strength (IRS)?

A. Yes, it passed
B. No, it failed
C. Maybe
D. I don’t know

A

The following are the data from the Three-Edge Bearing Test of Reinforced Concrete Pipe

Laying Length = 1.0m
Thickness of the Wall = 125 mm
Actual Internal Diameter = 950 mm
Load Produce 0.30mm Crack = 8500 kg
Ultimate Load = 9250 kg

What is the load to produce 0.30 mm crack?

A. 87.77 N/m/mm
B. 88.77 N/m/mm
C. 87.87 N/m/mm
D. 87.88 N/m/mm

A

The following are the data from the Three-Edge Bearing Test of Reinforced Concrete Pipe

Laying Length = 1.0m
Thickness of the Wall = 125 mm
Actual Internal Diameter = 950 mm
Load Produce 0.30mm Crack = 8500 kg
Ultimate Load = 9250 kg

What is the ultimate load?

A. 98.03 N/m/mm
B. 88.77 N/m/mm
C. 98.30 N/m/mm
D. 87.88 N/m/mm

C

Calculate the moisture content

Original Weight = 150 g
Oven Dried Weight = 145.5 g

A. 3.90%
B. 3.09%
C. 3.00%
D. 3.19%

C

The following are the data from the Three-Edge Bearing Test of Reinforced Concrete Pipe

Laying Length = 1.0m
Thickness of the Wall = 125 mm
Actual Internal Diameter = 950 mm
Load Produce 0.30mm Crack = 4250 lb
Ultimate Load = 4500 lb

What is the load to produce 0.30mm crack?

A. 19.90 N/m/mm
B. 199 N/m/mm
C. 29.90 N/m/mm
D. 299 N/m/mm

A

The following are the data from the Three-Edge Bearing Test of Reinforced Concrete Pipe

Laying Length = 1.0m
Thickness of the Wall = 125 mm
Actual Internal Diameter = 950 mm
Load Produce 0.30mm Crack = 4250 lb
Ultimate Load = 4500 lb

What is the ultimate load?

A. 21.07 N/m/mm
B. 210.7 N/m/mm
C. 20.17 N/m/mm
D. 201.7 N/m/mm

A

What is the degree of compaction of soil if the maximum dry density is 1880 kg/cu.m, wet density is 2100 kg/cu.m with actual moisture content of 9.50%?

A. 102.01%
B. 101.01%
C. 103.01%
D. 101.02%

A

How many layers will you compact and what is the minimum compacto requirement of embankment with a thickness of 1.2m?

A. 6 layers with 95% compaction
B. 8 layers with 95% compaction
C. 6 layers with 90% compaction
D. 8 layers with 90% compaction

A

Embankment material has PL of 30, LL of 34. What is the PI?

A. 64
B. 4
C. 88%
D. 114%

B

How many compacton tests must be conducted for Item 104 with a volume of 5000 cu.m?

A. 4
B. 6
C. 7
D. 3

A

How many CBR tests must be conducted for Item 200 with a volume of 6000 cu.m?

A. 2
B. 3
C. 4
D. 5

B

How many Grading Test tests must be conducted for Item 300 with a volume of 6000 cu.m?

A. 20
B. 30
C. 40
D. 50

A

How many Fractures Face must be conducted for Item 300 with a colume of 6000 cu.m?

A. 2
B. 3
C. 4
D. 5

C

What is the abrasion loss if the original weight of the sample is 10000g and the weight retained in Sive No. 12 is 9240 g

A. 8.22%
B. 7.6%
C. 76%
D. 82.2%

B

Compute the variation of Mass of 16mm diamter reinforcing bar with a mass of specimen 1420 kg/m?

A. 10.07%
B. 11.19%
C. 11.29%
D. 11.01%

A

What is your evaluation?

Compute the variation of Mass of 16mm diamter reinforcing bar with a mass of specimen 1420 kg/m?

A. It passed
B. It did not pass
C. Almost passed
D. Maybe

B

Compute Fineness Modulus

Sieve Size % Passing
3.8” 100
No. 4 95
No. 8 87
No. 16 56
No. 30 35
No. 50 45
No. 100 4
No. 200 2

A. 2.68
B. 2.78
C. 3.76
D. 4.22

B

What is the percent of asphalt by weight of total mix if the weight of dry aggregates is 960 kg and the weight of asphalt is 75 kg?

A. 7.25%
B. 7.52%
C. 7.35%
D. 7.53%

A

What is the degree of compaction of soils if the dry unit weight in the field is 1550 kg/cu.m and the laboratory dry maximum density is 1870 kg/cu.m?

A. 82.99%
B. 82.89%
C. 120.65%
D. 120.56%

B

What is the specific gravity of the mixture

        % By Weight of Total Mix     Specific Gravity Asphalt               5.50                                1.03 Aggregates         94.5                                2.60

A. 2.04
B. 2.40
C. 2.50
D. 2.55

C

What is the specific gravity of the mixture if there are air voids?

        % By Weight of Total Mix     Specific Gravity Asphalt               5.50                                1.03 Aggregates         94.5                                2.60

A. 1.948
B. 2.388
C. 2.292
D. 2.435

C

A 3.5m width single lane pavement has a shoulder width of 2.5m on each side. The combined thickness of subbase and base course shall be 425mm. How many layers of Compaction of the subbase and abse course must be carried out if the thickness of the subbase is 225 mm?

A. 2 layers over full width of 4.5m
B. 2 layers over full width of 3.5m
C. 3 layers over full width of 4.5m
D. 3 layers over full width of 3.5m

C

A 3.25m width single lane pavement has a shoulder width of 3.0m on each side. The combined thickness of subbase and base course shall be 400 mm. How many layers of Compaction of the subbase and abse course must be carried out if the thickness of the subbase is 200 mm?

A. 2 layers over full width of 4.35m
B. 2 layers over full width of 3.35m
C. 3 layers over full width of 4.35m
D. 3 layers over full width of 3.35m

A

If there are 555 pcs of reinforcemed pipe culverts, how many samples shall be taken for testing?

A. 9
B. 11
C. 13
D. 12

D

What is the compressive strength of the 6” diamter cyclinder sample if it fails 105 000 lbs?

A. 3,720 psi
B. 3,710 psi
C. 3,730 psi
D. 3,725 psi

A

What is the compressive strength of the 6” diamter cylinder sample if it fails 450 kN?

A. 3,560 psi
B. 3,690 psi
C. 3,580 psi
D. 3,550 psi

C

The design thickness of concrete core taken for thickness determination is 300 mm and the mesured thickness are the following: 305, 310, 290, 295, 290, 300, 300, and 265

What is the average thickness?

A. 296.66
B. 297.66
C. 298.75
D. 299.75

C

The design thickness of concrete core taken for thickness determination is 300 mm and the mesured thickness are the following: 302, 315, 299, 300, 308, 285, 305, 300 and 295

What is the average thickness?

A. 299.55
B. 295.99
C. 299.65
D. 299.99

A

How many quality tests are required for aggregate base course of 36,650 cu.m?

A. 15
B. 24
C. 25
D. 120

B

How many quality tests are required for corrugated galvanized iron sheets if the total quantity to be used in the project is 35,750 units?

A. 72
B. 36
C. 24
D. 18

C

How many quality tests are required for concrete hollow blocks if the total quantity to be used in the project is 35,750 units?

A. 36
B. 10
C. 8
D. 4

C

How many pieces for testing are required for concrete hollow blocks if the total quantity to be used in the project is 35,750 units?

A. 24
B. 30
C. 6
D. 12

B

How many quality tests are required for each type of pain if in a certain project, it reuires 335 gal of paint and which 160 gal are latex paint and the rest are enamel paint?

A. 2 gal each
B. 3 gal each
C. 4 gal each
D. 5 gal each

C

With the following data below, determine the tensile strength and yield point of a 16mm non-weldable reinforcing steel bar

Yield Point Load = 20250 lb
Tensile Point Load = 25850 lb

A. 458 & 572 MPa
B. 458 & 527 MPa
C. 448 & 562 MPa
D. 448 & 572 MPa

D

What is the compressive strength of a CHB is its ultimate load is 45 kips?

W = 200 mm
L = 400 mm
H = 250 mm

A. 3.5 MPa
B. 2.5 MPa
C. 4.5 MPa
D. 5.5 MPa

B

During a certain concreting of PCCP, the total volume of concrete reaches 550 cu.m. How many st of cylindertest specimes should be needed for sampling and testing purposes?

A. 7
B. 8
C. 11
D. 12

B

For a certain bridge project, the total number of elastomeric bearing pads are 52. What is the minimum number to be selected as samples for testing and inspection?

A. 3
B. 6
C. 5
D. 7

C

If the total asphalt content is 5.35 by weight of the mix and the asphalt absorbed by the aggregates is 0.85, what is the effective asphalt content by weight of the mixture?

A. 4.55
B. 6.55
C. 5.55
D. 4.45

A

What is the bulk specific gravity of the speciment of the compacted bitmunious sample?
Wt of sample in air = 1150 g
Wt of sample in water = 950g
Wt of sample in SSD = 1200g
Air voids = 3.5%

A. 6.4
B. 4.6
C. 5.0
D. 6.0

B

The total number of reflectorized thermoplastic rubble strips of a certain project is 134 bags. How many kg of samples should be taken for testing?

A. 20
B. 2
C. 10
D. 14

A

In a certain PCCP concreting with thickness of 0.23m, 450 sq.m was paved in a 1-day operation. How many set of concrete beam samples should be taken for strength determination?

A. 2
B. 1
C. 3
D. 4

A

How many core samples will be conducted on a 1200-m concrete pavement?

A. 6
B. 4
C. 12
D. 5

A

How many sets of field density tess are required per layer of a 2500-square meter of base course?

A. 6
B. 4
C. 12
D. 5

D