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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Water Resources & Environmental Engineering | 12% | - Hydrology & Water Systems
|
| Topic 2: Construction Management & Materials | 10% | - Construction Methods & Project Management
|
| Topic 3: Structural Engineering | 20% | - Structural Analysis & Design
|
| Topic 4: Civil Engineering Fundamentals | 25% | - Engineering Mathematics & Applied Science
|
| Topic 5: Transportation Engineering | 15% | - Highway & Road Design
|
| Topic 6: Geotechnical Engineering | 18% | - Soil Mechanics & Foundation Engineering
|
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NEW QUESTION # 91
The road cross sections shown have chainage (CH) 1+100 and 1+200. What is the volume of sub-grade material if an averaging method is applied?
Answer: D
Explanation:
The averaging method for earthworks between two stations is theAverage End Areamethod:
whereandare the end areas at the two cross sections andis the station spacing. Here, CH 1+100 to 1+200 givesm. From the cross-section labels in the figure, the two sub-grade areas sum to4.26 m²(e.g., approximately 1.31 m² and 2.95 m²), so the average area ism². Multiply by length:m³. This is the standard approach used for roadway cut/fill and subgrade volume computations between surveyed sections.
NEW QUESTION # 92
A civil engineering technologist is taking a sample of concrete cylinders from a truck. When should the sample be taken?
Answer: A
Explanation:
Concrete cylinder samples must represent thedelivered batch, so sampling must avoid the non-representative portions at the beginning and end of discharge where segregation and water/aggregate distribution can differ.
ASTM C172/C172M sampling practice requires collecting acomposite samplefrom themiddle portionof the load: specifically, not before about10%and not after about90%of the batch has been discharged, using two or more portions taken at regularly spaced intervals. A paper hosted by ASTM discussing sampling from truck mixers references ASTM C172/C172M and its requirement for collecting multiple portions from the discharged batch. Training/field guidance consistent with ASTM C172 also states sampling should occur after
~10% and before ~90% of discharge (i.e., the middle of the load). Therefore, the correct answer isin the middle of the load (Option C).
NEW QUESTION # 93
Which of the following can a civil engineering technologist request from a concrete supplier to verify that concrete falls within municipal specifications?
Answer: A
Explanation:
For ready-mixed concrete deliveries, compliance verification is commonly supported by thedelivery/batch ticket(often called the concrete delivery ticket). Industry guidance tied to ASTM C94 emphasizes that the ticket includes critical batch information (such as batch time and related data) used to confirm compliance with specified requirements and limits (including time limits for discharge and other production/traceability details). Because municipal specifications typically require confirmation of the delivered mix identification, quantities, admixtures, batching time, and other relevant production details, the batch/delivery ticket is the most direct document a technologist can request at the site to verify the delivered concrete aligns with the specified mix and placement requirements. A mix design submittal can show intended proportions but does not prove what was actually batched and delivered for that load; "batch location" alone is not sufficient;
"geotechnical mix design" is not applicable. Therefore, the correct item is thebatch ticket from the plant.
NEW QUESTION # 94
What test should be used to determine the compressive strength of concrete?
Answer: A
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 # 95
The invert elevation of a sanitary sewer line is 98.150 m, the pipe thickness is 12 mm and its outside diameter is 600 mm. Using the image below, what is the crown elevatf m
Answer: C
Explanation:
Invert elevation is the elevation of theinside bottomof the pipe. With outside diameterm and wall thicknessm, the inside diameter ism. The vertical distance from invert (inside bottom) to theoutside top of pipeism, giving the outside top-of-pipe elevation:m. The section detail in the provided image shows the vertical cover from top of pipe to top of asphaltas approximately2.476 m(dimensioned in the road section). Adding this cover gives the road crown elevation:m, matching optionA. This uses standard civil geometry conversions between invert, pipe dimensions, and surface elevations used in utility/roadway inspection and verification.
NEW QUESTION # 96
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