PDD 無料問題集「NCARB ARE 5.0 Project Development and Documentation」
The architect has completed 60% of the construction documents. The owner wants to establish the guaranteed maximum price (GMP) at this point before 100% of the construction documents are complete. Several flooring finish items are still undetermined.
What should be included in the project manual to make sure the contractor has a cost to cover all finishes?
What should be included in the project manual to make sure the contractor has a cost to cover all finishes?
正解：D
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解説: (JPNTest メンバーにのみ表示されます)
During the documentation of an office building, the owner requests a fitness center amenity be added to the scope. The mechanical engineer informs the architect that the mechanical unit currently located on a utility mezzanine will need to increase in size to accommodate the required increased capacity.
Who should the architect confirm with that the larger unit will work in this location?
Who should the architect confirm with that the larger unit will work in this location?
正解：A
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The single-line diagram for the electrical distribution system shown is for a multi-family project.
Click in the box on the single-line diagram where the transformer is located.
Click in the box on the single-line diagram where the transformer is located.
正解：
Explanation:
The transformer is located in the first large box after the high-voltage primary feeders and before the secondary service conductors on the left side of the diagram.
Step-by-Step Reasoning
1. Understanding the diagram flow:
* The leftmost symbol represents high-voltage primary feeders from the utility (2,400V, 4,160V, 7,200 V, or 13,200V).
* Immediately after that, there is a large box labeled "Secondary Service conductors" with standard building service voltages (120/208, 120/240, 277/480 V).
* To get from primary (medium/high) voltage to these usable secondary voltages, you must step down the voltage - and that is done by a transformer.
2. Transformer location in electrical distribution:
* Transformers are always placed between the incoming primary service and the secondary distribution system in building diagrams.
* In this drawing, the transformer is symbolized by the first large square/rectangular box after the high- voltage primary feeders.
3. Why not any other box?
* The following boxes and lines after this first step are feeders, panels, and motor starters - they operate at secondary voltage.
* Only the transformer connects the utility high-voltage system to the building's lower-voltage system.
NCARB ARE 5.0 PDD References:
* Content Area: Electrical Systems - Service Entrance and Distribution
* Source References:
* MEEB (Mechanical and Electrical Equipment for Buildings) - Chapter on Transformers & Electrical Service
* NEC (National Electrical Code) Article 450 - Transformer Installation and Use
* Architectural Graphic Standards - Single-Line Diagrams for Electrical Distribution Key Point:
In building electrical distribution, the transformer is always between the high-voltage primary service and the secondary service conductors to step down voltage to a usable level for building loads.