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| Section | Weight | Objectives |
|---|---|---|
| Civil Engineering Fundamentals | 25% | - Engineering Mathematics & Applied Science
|
| Construction Management & Materials | 10% | - Construction Methods & Project Management
|
| Geotechnical Engineering | 18% | - Soil Mechanics & Foundation Engineering
|
| Water Resources & Environmental Engineering | 12% | - Hydrology & Water Systems
|
| Transportation Engineering | 15% | - Highway & Road Design
|
| Structural Engineering | 20% | - Structural Analysis & Design
|
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NEW QUESTION # 53
A contractor is checking final grade elevation in advance of paving operations. What elevation needs to be confirmed before any asphalt is placed?
Answer: C
Explanation:
Before asphalt paving, the immediate supporting layer must be at the correct line and grade because asphalt thickness is builton top of the prepared base. Thetop of baseelevation controls final pavement structure thickness and the finished riding surface elevation when combined with asphalt lift thicknesses. If base grade is too high or low, the asphalt thickness will vary outside tolerance, which can affect performance (rutting, cracking), drainage crossfall, and tie-ins at structures and curbs. Standard field inspection practice therefore verifies base course elevations (and crossfall) immediately before paving so corrections (regrading
/recompaction) can be made while accessible. This fits typical roadway QA/QC sequencing: shape and compact subgrade/base to the specified elevations, confirm, then place asphalt lifts to achieve final grade.
Hence, the elevation that must be confirmed prior to placing asphalt istop of base.
NEW QUESTION # 54
A civil engineering technologist has been asked to check the following foundation plan drawing. How many different sizes of concrete piles are required in this project?
Answer: A
Explanation:
Pile sizing on a foundation plan is determined by thepile schedule/legendand callouts that specify different pile types or diameters (and sometimes lengths/capacities) used in different locations to suit varying loads or subsurface conditions. Reviewing a foundation plan for "how many pile sizes" means identifying the distinct pile designations listed in the schedule (e.g., P1, P2, P3, P4), each corresponding to a different concrete pile size/specification. Engineering drawing practice requires reading the schedule and matching symbols/marks to their definitions to count unique sizes, not simply counting total piles on the plan. In the provided drawing, the pile schedule indicatesfourdistinct pile sizes/designations, so the project requiresfourdifferent sizes of concrete piles.
NEW QUESTION # 55
What test should be used to determine the compressive strength of concrete?
Answer: D
Explanation:
Compressive strength is a hardened-concrete property verified by testing a standardized specimen under axial compression until failure. The standard field practice is to castconcrete cylindersfrom a representative sample, cure them under specified conditions, and test them in a compression machine at required ages (commonly 7 and 28 days) to confirm the concrete meets the specified strength. Civil engineering references describe that the compressive strength is computed from the maximum load at failure and the cylinder's cross- sectional area, and that cylinder testing is the accepted quality-control/acceptance method for structural concrete.
Slump testing only indicates fresh concrete consistency, air testing addresses durability-related air entrainment, and sieve testing applies to aggregates rather than hardened concrete strength. Thus, the correct test to determine compressive strength is thecylinder test (Option B).
NEW QUESTION # 56
Concrete thrust block measures 0.6 m by X m in the diagram. If the test pressure is 1034 kPa and the bearing pressure of the soil is 239 kPa, what is the minimum value of X?
Answer: C
Explanation:
Thrust blocks resist unbalanced pressure forces at fittings (tees/bends/caps) by mobilizing bearing against undisturbed soil. The basic thrust relationship isForce = Pressure ร Areaacting on the pipe's internal cross- sectional area. DIPRA's thrust restraint guide states that internal hydrostatic pressure acts on any plane with a force equal toP times A.
From the diagram, the pipe diameter is0.200 m, so pipe area. Thrust. Required soil bearing area. Given block face area, solve. Thus the minimumis0.226 m (Option C).
NEW QUESTION # 57
Which of the following tests are required as part of soil grain size analysis?
Answer: B
Explanation:
Soilgrain size analysisdetermines the particle-size distribution across coarse and fine fractions. Coarse particles (sand and gravel) are sized bysieve analysis, where the sample is passed through a stack of sieves and the mass retained on each sieve is measured to build the gradation curve. Fine particles (silt and clay) are too small for practical sieving and are therefore sized usingsedimentation methods, most commonly the hydrometer test, which infers particle sizes from settling velocity in a suspension. This combined approach (sieve for coarse, hydrometer for fines) is standard in civil geotechnical testing programs because it produces a continuous particle-size distribution needed for soil classification and engineering assessment. Atterberg limits (LL/PL) areconsistency/plasticitytests for fine-grained soils-not grain size tests-so they are not the required fine-fraction method for grain-size analysis. Therefore, the correct combination for grain size analysis issieve analysis for coarse grains and hydrometer test for fine grains.
NEW QUESTION # 58
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