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| Section | Objectives |
|---|---|
| Surveying and CAD Applications | - Land Surveying Principles - Computer-Aided Design (CAD) Usage |
| Civil Engineering Materials and Construction | - Construction Methods and Techniques - Concrete, Steel, and Asphalt Properties |
| Transportation Engineering | - Roadway Design Basics - Traffic and Pavement Considerations |
| Engineering Fundamentals | - Engineering Principles - Mathematics and Applied Calculations |
| Geotechnical Engineering | - Foundation Design Principles - Soil Mechanics |
| Professional Practice and Ethics | - Engineering Ethics - Legal and Regulatory Responsibilities |
| Structural Engineering Basics | - Structural Analysis Fundamentals - Design Principles and Load Considerations |
| Hydraulics and Hydrology | - Drainage and Water Management Systems - Fluid Mechanics Fundamentals |
>> Civil-Engineering-Technology考試證照 <<
如果你參加CTTAM Civil-Engineering-Technology認證考試，你選擇VCESoft就是選擇成功！祝你好運。
問題 #86
The critical path refers to which of the following series of tasks in a schedule?
答案：D
解題說明：
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.
問題 #87
A contractor is checking final grade elevation in advance of paving operations. What elevation needs to be confirmed before any asphalt is placed?
答案：B
解題說明：
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.
問題 #88
Considering Occupational Health and Safety standards for trench side slopes in lieu of shoring, and a 1.2 m wide trench, what is the minimum offset from centre line to the top edge of the trench for an excavation that is
3 m deep?
答案：B
解題說明：
For trenches without shoring, OHS/OSHA sloping requirements depend on soil type; when soil is not specified, standard practice is to use themost conservative allowable slope(Type C), which is1.5H:1Vfor excavations less than 20 ft (#6 m) deep. Lindeburg's reference (citing OSHA 1926 Subpart P, App. B) provides maximum allowable slopes, includingType C = 1.5:1 (H:V). For a 3 m deep trench, horizontal run on each side = 1.5 × 3 =4.5 m. Trench bottom width is 1.2 m, so half-width from centreline =0.6 m. Minimum offset from centreline to top edge = 0.6 + 4.5 =5.1 m, which rounds to the available option5.20 m. Therefore,D is the correct answer.
問題 #89
A soil sample has a porosity of 40%, and the specific gravity of solids is 2.60. What would be the approximate value of dry density of the soil if the soil is completely saturated?
答案：A
解題說明：
For soils, porosityand void ratioare related by. With,
Dry unit weight (often called dry density in kN/m³ terms) is:
whereis specific gravity of solids and. Substituting:
Note that "completely saturated" affects thebulk/saturated unit weight, but thedryunit weight depends only on the solids content (via) and void structure (via), not on how much water occupies the voids. These phase- relationship calculations are standard in soil mechanics.
問題 #90
What material property is measured by a sieve analysis?
答案：A
解題說明：
Sieve analysis is the standard laboratory procedure used to determine theparticle size distributionof granular materials by passing a representative dry sample through a stack of sieves with progressively smaller openings and measuring the mass retained on each sieve. The result is a gradation curve (percent passing vs.
sieve size) that characterizes whether the material is well-graded, poorly graded, or gap graded, and it is foundational for specifying aggregates for concrete, asphalt, base course, and filters. Civil engineering materials references identify sieve analysis as the test used to determinegradationand classify soils
/aggregates by size ranges. Angularity is a shape characteristic not measured by sieve analysis; moisture- density relates to compaction testing; and "mass" is a measured quantity in the procedure, but the material property being determined is thegradation (particle size distribution). Therefore, the correct answer isD.
問題 #91
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