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| Section | Weight | Objectives |
|---|---|---|
| Transportation Engineering | 20% | - Highway and road design
|
| Municipal Engineering | 20% | - Wastewater and stormwater management
|
| Surveying | 20% | - Surveying equipment and methods
|
| Materials Testing | 20% | - Concrete and asphalt testing
|
| Structural Design Fundamentals | 20% | - Design of structural elements
|
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NEW QUESTION # 52
The k-value in a vertical curve design defines the horizontal distance required to make a 1% change in the gradient. Provided that the stopping sight distance is the same, the uphill grade is 1%, the downhill grade is #0.
5%, and the design speed is 90 km/h, what is the length of the vertical curve?
Answer: A
Explanation:
For vertical curves, AASHTO uses theK valuedefined as, whereis curve length (m) andis the algebraic difference in grades (percent). Here,and, so. Withstopping sight distance controlled by the same criterion(i.
e., the applicable K value for the given design speed remains the same), length is found from. For 90 km/h, the SSD-based K for the controlling curve type yieldsthat corresponds to60 mforper the provided choices.
This reflects standard vertical-curve practice: once K is set by SSD for the design speed, length scales linearly with the grade difference.
NEW QUESTION # 53
A gas fireplace has been installed by the general contractor's sub-trade. After numerous repair attempts, it is still not operating properly. How should the owner correct the problem?
Answer: C
Explanation:
Under standard construction contracting practice, thegeneral contractor (prime contractor)is responsible for the overall delivery of the work, including coordination and quality of subcontractors' work and correction of deficiencies that fall under the contract's quality obligations and warranty requirements. Warranties are specifically described as requiring the contractor to repair or replace deficient work within a specified period at the contractor's expense. Since the subcontractor is contractually accountable to the general contractor (not directly to the owner in a typical arrangement), the owner's most effective and proper route is to require the general contractorto address the deficiency, manage the subcontractor, and ensure the system performs as required. Escalating directly to a new contractor and back-charging can be possible, but it is typically a later remedy after formal notice and contract procedures. Contacting the manufacturer may help diagnose, but it does not replace contractual responsibility for correction. Therefore, the correct action is toask the general contractor to review and correct the installation.
NEW QUESTION # 54
Which are five different types of driver maneuvers a technologist must consider when designing an at-grade intersection?
Answer: A
Explanation:
At-grade intersection design is governed by how vehicle paths interact-i.e., the fundamentalconflict types and maneuver classes that must be accommodated by geometry, channelization, and traffic control. AASHTO' s intersection chapter explicitly categorizes vehicular conflict points and illustrates them using the maneuver typesdiverging, merging, and crossing, and it addresses how turning movements create and interact with these conflicts within the functional area of intersections.
In addition, AASHTO describesweavingas the condition where one-way traffic streams cross bymerging and divergingmaneuvers-another key operational behavior that affects design and level of service.
Putting these together, the five maneuvers a technologist must consider in intersection design arediverging, merging, weaving, crossing, and turning, which corresponds exactly toOption B.
NEW QUESTION # 55
A continuous bridge spans over multiple piers. If one of the piers collapsain standing because the adjacent piers will pick up the load. What type of redundancy does the bridge have?
Answer: B
Explanation:
The scenario describes the bridge continuing to stand after a support failure because loads can be redistributed through alternate routesto the remaining supports. That is the essence ofalternate load paths
, i.e.,load path redundancy. Petroski explains bridge failures where collapse occurred because there wasno alternate load pathcapable of supporting rerouted loads after a component became loose, highlighting that survival depends on alternate load paths. He also notes designers try to buildalternate load pathsso stresses can reroute when one load path becomes unavailable. Labi similarly describes redundancy as having another member/component "there to play its role" in the event of failure, enab when a component is out of service.
Because the bridge remains standing due to load redistribution to adjacent supports, the redundancy type is best identified dancy.
NEW QUESTION # 56
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 # 57
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