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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Transportation Engineering | 15% | - Highway & Road Design
|
| Topic 2: Structural Engineering | 20% | - Structural Analysis & Design
|
| Topic 3: Construction Management & Materials | 10% | - Construction Methods & Project Management
|
| Topic 4: Water Resources & Environmental Engineering | 12% | - Hydrology & Water Systems
|
| Topic 5: Civil Engineering Fundamentals | 25% | - Engineering Mathematics & Applied Science
|
| Topic 6: Geotechnical Engineering | 18% | - Soil Mechanics & Foundation Engineering
|
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NEW QUESTION # 72
A civil engineering technologist is performing a concrete test on a site. What minimum number of cylinders should the technologist make?
Answer: A
Explanation:
Concrete compressive strength is verified using standardized specimens that represent the delivered concrete.
A typical field/lab testing program preparesa set of cylindersso strength can be checked at standard ages and so at least one specimen remains available if a test is invalid or confirmation is required. InExperiment Design for Civil Engineering, the compressive strength procedure explicitly states thatsets of four cylindersshould be prepared and thenone cylinder from each setis tested at7, 14, 21, and 28 days. This "four-cylinder set" directly supports the minimum needed to obtain a time-history of strength development through the common curing ages used in practice and referenced by ASTM C39 age tolerances. While many projects may require additional cylinders (for 7-day early breaks, hold cylinders, or additional acceptance tests), the question asks theminimumnumber, and the documented testing set described isfour.
NEW QUESTION # 73
Which of the following images shows the appropriate tool to measure the slump of concrete?
Answer: C
Explanation:
Concreteslumpis measured using theslump cone (Abrams cone)apparatus and tamping rod in accordance with standard procedures (e.g., ASTM C143). The test measures the vertical "settlement" of fresh concrete after a cone-shaped mold is filled in layers, consolidated (rodded), struck off, and then lifted vertically so the concrete subsides; the drop in height is the slump. TheEssentials of Civil Engineering Materialstext describes the slump test as forming a specimen inside ametal cone, removing the cone, and measuring how much the top settles ("slumps"), and it outlines the typical steps: wet the cone, fill in layers, tamp with a rod, strike off, and measure the slump. The correct tool set therefore is the image that shows theslump cone with base and tamping rod, which corresponds toOption C.
NEW QUESTION # 74
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: B
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 # 75
What test should be used to determine the compressive strength of concrete?
Answer: B
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 # 76
A civil engineering technologist has been given the task of drawing a foundation plan for a building that measures 20 m × 30 m. The drawing will be produced on a C1 sized sheet, which measures 648 mm × 917 mm. Which of the following is the best scale for the plan?
Answer: B
Explanation:
Selecting a drawing scale is an engineering graphics task: the plan must fit within the sheet limits after allowing for borders, title block, notes, dimensions, and details. Engineering drawing practice treats scale as a proportional reduction ratio that preserves geometric similarity between the real object and the drawing. A 20 m × 30 m footprint equals 20,000 mm × 30,000 mm. At 1:50, the plotted size is 400 mm × 600 mm, which fits comfortably on a 648 mm × 917 mm sheet with room for margins and annotations. At 1:25, the plotted size becomes 800 mm × 1,200 mm, which exceeds the sheet. At 1:5, it is far too large; at 1:250, it is very small (80 mm × 120 mm), reducing readability for foundations that typically require clear dimensioning of footings, piles, grade beams, and notes. Therefore, 1:50 provides the best balance of fit and legibility for a C1 sheet, makingOption Cthe best scale choice.
NEW QUESTION # 77
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