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NEW QUESTION # 99
The client requests to limit daylighting in a second-story bedroom located in the northeast corner of a new house, especially in the mornings. The architect is considering options for the windows in terms of quantity, size, type, and location, and notes that emergency escape and rescue openings must provide a minimum clear opening of 5.7 square feet.
Answer: A
Explanation:
Emergency egress requires minimum 5.7 sq ft clear opening (net).
Double-hung windows' clear opening is about half the sash area. A 3'×5' nominal size gives # 3×2.5 = 7.5 sq ft gross, ~6.25 sq ft clear # meets code.
North wall placement minimizes direct morning sunlight (vs. east wall).
A: 2'×2' awning # too small and awnings don't count for egress in most cases.
B: Fixed windows do not meet egress operability requirements.
C: Two 3'×2' casements on east wall # each only 6 sq ft gross, and east wall gets morning sun, opposite client' s goal.
PDD Reference: IBC §1030 Emergency Escape and Rescue; ARE 5.0 PDD "Code compliance-Daylighting control & egress."
NEW QUESTION # 100
Proposed trees along a residential street next to a new development site should first be selected based on which of the following?
Answer: C
Explanation:
Selecting trees for residential streets near a new development should prioritize:
Adaptability to local climate and soil conditions to ensure healthy growth and longevity.
While seasonal foliage, color, scale, and wildlife habitat are important, they are secondary to ensuring the tree can survive and thrive in the environment.
Dense root systems and wind resistance are considerations but often come after adaptability is confirmed.
Reference:
NCARB ARE 5.0 Review Manual, Site Design and Environmental Systems chapter Landscape architecture best practices and local planting guides
NEW QUESTION # 101
Which of the following admixtures is used to greatly increase the slump of concrete?
Answer: C
Explanation:
Comprehensive Detailed Explanation with all NCARB ARE 5.0 Project Development and Documentation (PDD) Study Guide References:
In concrete technology, admixtures are used to modify properties of fresh or hardened concrete:
Air-entraining agents: Introduce microscopic air bubbles to improve freeze-thaw resistance; they do not increase slump.
Water-reducing agents: Reduce water content while maintaining slump; increase workability but only moderately.
Calcium chloride: An accelerator, speeds up setting time; does not increase slump.
Superplasticizers (also called high-range water reducers): Significantly increase the slump (workability) of concrete without adding extra water, making the mix more flowable and easier to place.
Thus, to greatly increase slump while maintaining water-cement ratio, the superplasticizer is the correct choice.
Supporting References:
NCARB ARE 5.0 Review Manual, Materials and Assemblies section
Portland Cement Association publications on admixtures
ACI (American Concrete Institute) guidelines on admixtures
NEW QUESTION # 102
Which system would most impact the structural loads in a vegetated roof design?
Answer: D
Explanation:
Green roofing adds significant dead loads due to soil and water retention layers. Structural engineers must verify load-bearing capacity. This is tied to ARE Objective 3.2 on evaluating integration of building systems.
NEW QUESTION # 103 
Refer to the exhibit.
Which device allows for piping misalignment and isolation?
Answer: D
Explanation:
Understanding the Diagram
The image shows a pump installation detail with various vibration and alignment control devices:
* A - Typically a pipe hanger or suspension support to reduce strain on piping.
* B - Likely a flexible electrical conduit (for pump motor connection).
* C - Spring vibration isolators under the pump base to prevent vibration transmission into the building structure.
* D - A flexible pipe connector (also called a flex connector or braided flexible coupling).
Purpose of Flexible Pipe Connectors
Flexible pipe connectors (D in the diagram) are designed to:
* Absorb minor misalignment between connected piping systems.
* Reduce stress on pump flanges due to thermal expansion, settlement, or installation tolerances.
* Isolate vibration from the pump so that it is not transmitted along rigid piping to the building structure.
This makes them essential in mechanical systems where pumps, chillers, or other vibrating equipment connect to rigid building piping.
Why Other Options Are Incorrect:
* A. Pipe hangers/supports - Maintain alignment and support vertical loads but do not allow for misalignment or vibration isolation in the same way as flexible connectors.
* B. Electrical conduit/flexible connection - Relates to electrical supply flexibility, not piping alignment.
* C. Spring vibration isolators - Isolate vibration from equipment to the floor but do not address piping misalignment.
NCARB ARE 5.0 PDD Study Guide References:
* Content Area: Integration of Building Materials & Systems - Mechanical Systems Coordination
* Source References:
* Mechanical and Electrical Equipment for Buildings (MEEB) - Chapter on Vibration Isolation & Pump Installation
* Architectural Graphic Standards - Flexible Connector & Piping Details
* Key Point: Flexible connectors at pumps and equipment protect against misalignment, vibration, and stress transfer to the piping system.
NEW QUESTION # 104
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