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| Section | Weight | Objectives |
|---|---|---|
| Municipal Engineering | 20% | - Water supply and distribution
|
| Surveying | 20% | - Surveying equipment and methods
|
| Transportation Engineering | 20% | - Highway and road design
|
| Structural Design Fundamentals | 20% | - Structural analysis
|
| Materials Testing | 20% | - Soil mechanics and testing
|
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NEW QUESTION # 43
What is the purpose of a spiral curve in highway design?
Answer: B
Explanation:
Aspiral (transition) curveis used in horizontal alignment to provide a gradual change in curvature from a tangent (infinite radius) to a circular curve (constant radius). AASHTO explains that spiral transition curves simulate the natural turning path of a vehicle and allow lateral acceleration (and side friction demand) to increase/decrease gradually as drivers enter/exit the circular curve, improving comfort and reducing encroachment. AASHTO also notes that the transition curve length provides a suitable location to develop superelevation runoffsmoothly from normal crown to full superelevation. These functions are specifically about transitioning into (and out of) the circular curve, not slowing traffic or transitioning vertical alignment.
Therefore, the purpose of a spiral curve isto transition into a circular curvewhile providing a smooth geometric and superelevation transition for drivers.
NEW QUESTION # 44
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: D
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 # 45
What substance is used to calibrate a concrete air pressure meter?
Answer: D
Explanation:
A pressure air meter (used to measure air content of fresh concrete) must be calibrated by verifying thevolume of the measuring bowl and theaccuracy of the graduated neck/markings. This is done usingwaterbecause water volume can be measured accurately and used to check the meter's indicated graduations (air content scale) by filling the assembled unit to known levels. InExperiment Design for Civil Engineering, the calibration procedure directs filling the assembled air meterwith waterto the highest graduation mark and adding water in known increments to verify that the graduations are accurate throughout the range. The same source references using water to establish the mass/density) and to check calibration cups and neck readings.
Therefore, the substance used to calibrate the air pres*, makingOption Bcorrect.
NEW QUESTION # 46
The critical path refers to which of the following series of tasks in a schedule?
Answer: A
Explanation:
The critical path is thelongest-duration paththrough a project network schedule and represents the sequence of activities withzero (or minimal) float. Because activities on this path have no schedule slack, any delay to a critical-path activity delays theproject completionunless mitigated (e.g., crashing, fast-tracking, resequencing). Standard project scheduling references define the critical path as the chain of tasks that determines theearliest possible finishdate; controlling and monitoring these tasks is essential for schedule management and forecasting. This is why contract administrators and project teams track critical activities and escalate risks affecting them-delivery delays, access constraints, approvals, and rework-because they directly move the completion milestone. Therefore, the critical path refers to tasks thatdictate the finish date of the project, which is optionA.
NEW QUESTION # 47
What test should be used to determine the compressive strength of concrete?
Answer: B
Explanation:
Concrete compressive strength is determined by loading astandard molded specimento failure in a compression testing machine and calculating strength from the peak load divided by the specimen's cross- sectional area. The common acceptance specimen for cast-in-place concrete is acylinder, produced and cured using standardized procedures to ensure that test results reliably represent the delivered concrete. Civil engineering materials references describe compressive strength testing as the principal measure used to verify compliance with specified strength (f'c), and that cylinder specimens are tested in compression to determine the maximum stress sustained.
A slump test measures workability/consistency, an air test measures entrained air content, and sieve testing measures aggregate gradation-none of these directly measure compressive strength. Therefore, the required test for compressive strength is thecylinder test (Option B).
NEW QUESTION # 48
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