Question 1
A company has 20 painters, 15 metal workers and 40 laborers. Painters and metal workers work 40 hours a week and laborers work 50 hours a week. All Workers worked 50 weeks in a given year. There were nine injuries reported by painters, 2 by metal workers and 13 by laborers. What is the incident rate? Select one
Correct Answer : b
Selected Answer : b
Explanation : An incidence rate of injuries and illnesses may be computed from the following formula: Incident rate=(Number of injuries×200000)/(Employee hours worked) The 200,000 figure in the formula represents the number of hours 100 employees working 40 hours per week, 50 weeks per year would work, and provides the standard base for calculating incidence rate for an entire year. Solution: Number of injuries = 9 + 2 + 13 = 24 injuries Employee hours for painters = 20 × 40 × 50 = 40000 Employee hours for metal workers =15 × 40 × 50 = 30000 Employee hours for laborers =40 × 50 × 50 = 100000 Incident rate=(24×200000)/(40000+30000+100000)=28.23
Explanation : /(Employee hours worked) The 200,000 figure in the formula represents the number of hours 100 employees working 40 hours per week, 50 weeks per year would work, and provides the standard base for calculating incidence rate for an entire year. Solution: Number of injuries = 9 + 2 + 13 = 24 injuries Employee hours for painters = 20 × 40 × 50 = 40000 Employee hours for metal workers =15 × 40 × 50 = 30000 Employee hours for laborers =40 × 50 × 50 = 100000 Incident rate=(24×200000)/(40000+30000+100000)=28.23)
Question 2
Consider the following characteristics regarding timber 1 Stronger variety 2. Ability to take very smooth finish 3. Toughness 4 Difficult to season Which of the above characteristics is are essential for timber to be used as beams? Select one
Correct Answer : d
Selected Answer : d
Explanation : • For a beam main important character required is strength. The bending strength of the timber is the most important characteristic. • The timber should have enough stiffness or toughness • .There is no need to achieve smooth finish in beam, except in case of architectural buildings.
Explanation : 
Question 3
Consider the following statements Entrainment of air in concrete is done so as to 1. Increase the workability 2. Increase the strength 3. Increase the resistance to freezing and thawing Which of the above statements is/are correct? Select one
Correct Answer : c
Selected Answer : c
Explanation : Effects of air entrainment of concrete • Increase resistance to freezing and thawing • Increase workability • Decreases strength unit weight • Reduce tendency of segregation and bleeding • Decreases permeability • Increases resistance to chemical attack.
Explanation : 
Question 4
Correct Answer : b
Selected Answer : b
Explanation : We know three equations of Equilibrium ∑V = 0, ∑H = 0, ∑M = 0 Solution: Total load=6×9+28=82 kips We need to find support reactions ∑MB= 0 (since B is a hinged end) R_A×23-(6×9)×(9/2+6+8)-28×8=0 RA = 53.17 kips B.M = 53.17 × 5 – 6 × 5 × 5/2 = 190.86 ≈ 190 kips ft
Explanation :  R_A×23-(6×9)×(9/2+6+8)-28×8=0 RA = 53.17 kips B.M = 53.17 × 5 – 6 × 5 × 5/2 = 190.86 ≈ 190 kips ft)
Question 5
What is the "yield strength" for most reinforcing bars? Select one
Correct Answer : a
Selected Answer : a
Explanation : • Reinforcing bars typically come in two primary grades: Grade 40, which has a minimum yield strength of 40,000 psi, and Grade 60, which has a yield strength of 60,000 psi. • The metric equivalents for these are Grade 420, which has equivalent yield strength of 420 MPa (megapascals) and Grade 520, which has an equivalent yield strength of 520 MPa • Yield strength of steel bar is assumed to be 450 MPa
Explanation :  and Grade 520, which has an equivalent yield strength of 520 MPa • Yield strength of steel bar is assumed to be 450 MPa)
Question 6
Correct Answer : a
Selected Answer : a
Explanation : It is well known that “Lowering of water level leads to increase in effective stress”. Formula: Increase in effective stress = Change in water level × Unit weight of water Solution: Increase in effective stress = (9 -5) × 62.43 pcf = 249.72 pcf [Unit weight of water = 62.37 pcf (pounds per cubic foot)]
Explanation :  × 62.43 pcf = 249.72 pcf [Unit weight of water = 62.37 pcf (pounds per cubic foot)])
Question 7
QSAS stands for
Correct Answer : b
Selected Answer : b
Explanation : • Qatar Sustainability Assessment System (QSAS) is a green building certification system developed for the State of Qatar. • The primary objective of Qatar Sustainability Assessment System [QSAS] is to create a sustainable built environment that minimizes ecological impact while addressing the specific regional needs and environment of Qatar.
Explanation :  is a green building certification system developed for the State of Qatar. • The primary objective of Qatar Sustainability Assessment System [QSAS] is to create a sustainable built environment that minimizes ecological impact while addressing the specific regional needs and environment of Qatar.)
Question 8
The slump test used for Select one
Correct Answer : a
Selected Answer : a
Explanation : Tests on workability of concrete: • Slump Test • Compacting Factor Test • Flow Test • Kelly Ball Test • Vee Bee Test
Explanation : 
Question 9
The factors that govern the workability of fresh concrete are? Select one:
Correct Answer : d
Selected Answer : d
Explanation : Seven factors which affect workability of concrete are: 1. Cement content of concrete 2. Water content of concrete 3. Mix proportions of concrete 4. Size of aggregates 5. Shape of aggregates 6. Grading of aggregates 7. Surface texture of aggregates
Explanation : 
Question 10
Correct Answer : b
Selected Answer : d
Explanation : We know three equations of Equilibrium ∑V = 0, ∑H = 0, ∑M = 0 Solution: Total load=5×13+30=95 kips We need to find support reactions ∑MB= 0 (since B is a hinged end) R_A×17-(5×13)×(13/2+4)-30×9=0 RA = 56 kips RB = 39 kips If we go from left support Shear force at A = 56 kips Shear force under load = 56 – 40 – 30 = - 14 kips Shear force at P = -14 – 25 = - 39 (- ve sign indicates downwards) Alternate method: If we go from right support Shear force at support = 39 kips Since there are no loads in between shear force at P = 39 kips.
Explanation :  R_A×17-(5×13)×(13/2+4)-30×9=0 RA = 56 kips RB = 39 kips If we go from left support Shear force at A = 56 kips Shear force under load = 56 – 40 – 30 = - 14 kips Shear force at P = -14 – 25 = - 39 (- ve sign indicates downwards) Alternate method: If we go from right support Shear force at support = 39 kips Since there are no loads in between shear force at P = 39 kips.)
Question 11
Wastewater engineer designed a circular primary sedimentation tank with a detention time of 2.5 hrs. Height of the tank is 5.6 ft. What is the diameter of the tank if the flow is 1.2 MGD? Detention Time = Volume of the tank / Flow
Correct Answer : b
Selected Answer : b
Explanation : Detention time=(Volume of tank)/Flow 2.5/24=(Volume of tank)/(1.2×〖10〗^6 gallons/day)=(Volume of tank)/(160416.67 ft^3/day) Volume of tank = 16710 ft3 Volume of tank = Height of tank × Area of tank 16710 = 5.6 × π /4 × d2 d = 61.6 ft
Explanation : /Flow 2.5/24=(Volume of tank)/(1.2×〖10〗^6 gallons/day)=(Volume of tank)/(160416.67 ft^3/day) Volume of tank = 16710 ft3 Volume of tank = Height of tank × Area of tank 16710 = 5.6 × π /4 × d2 d = 61.6 ft)
Question 12
The intersection of the WBS and the OBS is the Select one
Correct Answer : c
Selected Answer : c
Explanation : WBS – Work Breakdown structure OBS – Organization Breakdown structure. The intersection of the OBS and WBS defines points of management accountability for the work called Control (or Cost) Accounts.
Explanation :  Accounts.)
Question 13
The flow immediately upstream of a hydraulic jump is Select one
Correct Answer : c
Selected Answer : c
Explanation : uploads/Question_Image/dfa5a61aa367d7e01098f457f0130f35d352fcdc.png
Explanation : 
Question 14
Road project needs a gravel base. Which gravel do you recommend for the project? Select one
Correct Answer : d
Selected Answer : d
Explanation : uploads/Question_Image/f3610e7a365310aa6df5cac65412f8370d4c74da.png
Explanation : 
Question 15
Correct Answer : a
Selected Answer : a
Explanation : We know three equations of Equilibrium ∑V = 0, ∑H = 0, ∑M = 0 Solution: Total load=5×13+30=95 kips We need to find support reactions ∑MB= 0 (since B is a hinged end) R_A×17-(5×13)×(13/2+4)-30×9=0 RA = 56 kips RB = 39 kips Maximum bending moment occurs under the load B.M = 56 × 8 – 5 × 8 × 4 = 288 kip ft
Explanation :  R_A×17-(5×13)×(13/2+4)-30×9=0 RA = 56 kips RB = 39 kips Maximum bending moment occurs under the load B.M = 56 × 8 – 5 × 8 × 4 = 288 kip ft)
Question 16
The minimum and maximum void ratios of a sand are 0.47 and 0.8, respectively. The specific gravity of the soil solids, GS is 2.65. A direct shear test was conducted on this soil (dry). For the test, Void ratio, e = 0.62 tan ϕ = S/N Specimen size = 2 x 2 x 15 in (height) Normal load, N = 40 lb Shearing load of failure, S = 28 lb The soil friction angle for the shear test is about Select one
Correct Answer : b
Selected Answer : b
Explanation : Shear stress at failure τ=c+σ tanϕ Since it is sand c =0 Normal stress=(Normal load)/(Cross sectional area of sample) Shear stress=(Shear load)/(Cross sectional area of sample) Normal stress (σ) = 40/2 × 15 Shearing stress (τ) =28/2 × 15 28/30=40/30 tanϕ tanϕ=0.7 ϕ = 35°.
Explanation : /(Cross sectional area of sample) Shear stress=(Shear load)/(Cross sectional area of sample) Normal stress (σ) = 40/2 × 15 Shearing stress (τ) =28/2 × 15 28/30=40/30 tanϕ tanϕ=0.7 ϕ = 35°.)
Question 17
If a project has a CPI of 0.95 and an SPI of 1.01 this indicates (REPEATED)
Correct Answer : c
Selected Answer : c
Explanation : SPI - Schedule performance index: The schedule performance index (SPI) is a measure of how close the project is to being completed compared to the schedule. SPI=(Earned value)/(Planned value)=(Budgeted cost of work performed)/(Budgeted cost of work scheduled) The three cases are SPI > 1 ⇒ Project is progressing faster than schedule (SPI greater than one) SPI = 1 ⇒ Project is progressing as per schedule SPI < 1 ⇒ Project is progressing slower than schedule It is given SPI of 1.01 which is greater than 1 so Project is progressing faster. Cost performance index (CPI) The cost performance index (CPI) is a measure of the financial effectiveness and efficiency of a project. It represents the amount of completed work for every unit of cost spent. CPI=(Earned value)/(Actual cost)=(Budgeted cost of work performed)/(Actual cost of work performed) CPI > 1 ⇒ Project is costing less than the budget CPI = 1 ⇒ Project is costing equal to the budget CPI < 1 ⇒ Project is over budget It is given CPI of 0.95 which is less than 1 so project is over budget.
Explanation :  is a measure of how close the project is to being completed compared to the schedule. SPI=(Earned value)/(Planned value)=(Budgeted cost of work performed)/(Budgeted cost of work scheduled) The three cases are SPI > 1 ⇒ Project is progressing faster than schedule (SPI greater than one) SPI = 1 ⇒ Project is progressing as per schedule SPI < 1 ⇒ Project is progressing slower than schedule It is given SPI of 1.01 which is greater than 1 so Project is progressing faster. Cost performance index (CPI) The cost performance index (CPI) is a measure of the financial effectiveness and efficiency of a project. It represents the amount of completed work for every unit of cost spent. CPI=(Earned value)/(Actual cost)=(Budgeted cost of work performed)/(Actual cost of work performed) CPI > 1 ⇒ Project is costing less than the budget CPI = 1 ⇒ Project is costing equal to the budget CPI < 1 ⇒ Project is over budget It is given CPI of 0.95 which is less than 1 so project is over budget.)
Question 18
Value engineering can be described as Select one
Correct Answer : b
Selected Answer : b
Explanation : (*HINT: VALUE ENGINEERING – Least cost, minimum cost, lowest cost. These are the keywords.) A process of systematic review that is applied to existing product designs in order to compare the function of the product required by a customer to meet their requirements at the lowest cost consistent with the specified performance and reliability needed.
Explanation :  A process of systematic review that is applied to existing product designs in order to compare the function of the product required by a customer to meet their requirements at the lowest cost consistent with the specified performance and reliability needed.)
Question 19
Correct Answer : d
Selected Answer : d
Explanation : Concept: Factor of safety against sliding=(μ×R_V)/P_a RV – Total vertical weight = 12600 + 3500 + 4500 = 20600 lb/ft Pa – 5400 lb/ft μ = tan ϕ = 0.47 Factor of safety against sliding=(0.47×20600)/5400=1.78
Explanation : /P_a RV – Total vertical weight = 12600 + 3500 + 4500 = 20600 lb/ft Pa – 5400 lb/ft μ = tan ϕ = 0.47 Factor of safety against sliding=(0.47×20600)/5400=1.78)
Question 20
The strength of concrete at a given age and cured under standard conditions is dependent on Select one:
Correct Answer : c
Selected Answer : c
Explanation : • The strength of moist-cured concrete mainly depends on the water-to-cement ratio and degree of compaction. • The presence of voids in concrete due to improper compaction significantly reduces the strength
Explanation : 
Question 21
For extracting rock samples of good quality we use Select one:
Correct Answer : a
Selected Answer : a
Explanation : • To collect the core of the rock drilled, a device known as the core barrel is used. It is 0.5 m to 3 m • Core barrel retains rock core samples from drilling operations • The three types are core barrel are single tube core barrel, double tube core barrel and triple tube core barrel. • Double-tube core barrel is the standard one and suitable for extracting samples of good quality than single tube barrel
Explanation : 
Question 22
A four-lane freeway runs through rural areas. Each lane is 11 ft wide. A recent traffic study for a particular portion of the daily commute period shows the directional weekday volume is 2400 vph in one direction. An average of 750 vehicles passes by during the busiest 15 min. What is the most nearly peak hour factor (PHF)? Useful relationship PHF = PV/HV Select one
Correct Answer : b
Selected Answer : b
Explanation : Peak-Hour Factor (PHF): is the ratio of the volume occurring during the peak hour to a maximum rate of flow during a given time period within the peak hour. Peak hour factor (PHF) = (Hourly volume) / (Maximum rate of flow) Usually, 15 minute periods of flow are /here, Peak hour factor (PHF) = (Hourly volume) / (60/15×V15) V15 - Maximum 15 minute volume within the hour (Busiest 15 min) If 20 minute period flow is considered. Peak hour factor (PHF) = (Hourly volume) / (60/20 × V20) V20 - Maximum 20 minute volume within the hour (Busiest 20 min) Solution: Hourly volume = 2400 vph V15 = 750 PHF=2400/(60/15×750)=0.8
Explanation : : is the ratio of the volume occurring during the peak hour to a maximum rate of flow during a given time period within the peak hour. Peak hour factor (PHF) = (Hourly volume) / (Maximum rate of flow) Usually, 15 minute periods of flow are /here, Peak hour factor (PHF) = (Hourly volume) / (60/15×V15) V15 - Maximum 15 minute volume within the hour (Busiest 15 min) If 20 minute period flow is considered. Peak hour factor (PHF) = (Hourly volume) / (60/20 × V20) V20 - Maximum 20 minute volume within the hour (Busiest 20 min) Solution: Hourly volume = 2400 vph V15 = 750 PHF=2400/(60/15×750)=0.8)
Question 23
The arc definition of the Degree of Curve (D) is defined as the Select one
Correct Answer : a
Selected Answer : a
Explanation : • The definition of the degree of curvature D is the central angle subtended by a 100-foot arc. • If a “metric D” would be the angle subtended by a 30.5-meter arc. (Metric units) • If metric units are used, the definition of the degree of the curve must be carefully examined..
Explanation :  • If metric units are used, the definition of the degree of the curve must be carefully examined..)
Question 24
Concreting has to be done in cold weather. What type of cement is not desirable? Select one:
Correct Answer : c
Selected Answer : c
Explanation : In cold weather concreting Low heat cement should not be used or it is not desirable. Because these cement set up more slowly and generate less internal heat Type 4 - Low heat portland cement. Used where the amount and rate of heat generation must be kept to a minimum. Important point: For cold weather concreting, use Portland cement Type III (HIGH EARLY STRENGTH CEMENT), cement that helps in setting without reducing the concrete's quality. This is important because high moisture content can induce corrosion problems in steel reinforcement.
Explanation : , cement that helps in setting without reducing the concrete's quality. This is important because high moisture content can induce corrosion problems in steel reinforcement.)
Question 25
Correct Answer : d
Selected Answer : d
Explanation : The concept behind influence line can be easily understood by Muller Breslau principle. It states that, if an internal stress component or reaction is considered to act through some small distance and thereby to deflect or displaced the structure. The curve of the deflected structure will be to some scale of influence line for the stress or reaction component. EASY TRICK. 1. To find influence line for reactions – Give unit displacement. 2. *To find influence line for shear force – Place a pair of vertical rollers at that point. One roller moves up and other roller moves down. When we look at point B we can see + 0.5 and – 0.5 which clearly shows the influence line is shear force at B. Hence D is the answer. 3. To find influence line for moment – Place a hinged support at the point and give rotation
Explanation : 
Question 26
The construction estimate of a project is used by Select one
Correct Answer : d
Selected Answer : d
Explanation : • Construction cost estimating is a foundational principle in forecasting the cost of construction of a structure. • Project owners also use construction cost estimation to determine a project's feasibility, scope, and the necessary budget allocations. • Proper construction estimation practices prevent the contractor from losing money and the client from overpaying. Advantages of cost estimation: • Project owners in determining the suitability and feasibility of a project • The builder’s ability to decide on the profit potential of a project. • The procurement team with the financing of the project. • The project team’s ability to make vital decisions on the design or materials could positively or negatively impact the project's cost.
Explanation : 
Question 27
QCS means
Correct Answer : c
Selected Answer : c
Explanation :
Explanation :
