Project-Planning-Design無料更新100%試験合格率保証 [2025]
[2025年10月] 認証されたNCARB試験問題集でProject-Planning-Design試験学習ガイド
質問 # 37
An existing building containing the maximum allowable area may be extended horizontally provided the extension is separated from the existing building by which one of the following?
- A. An outside space separation of at least 10 ft
- B. A water curtain
- C. A fire-rated shutter
- D. A fire wall
正解：D
解説：
Comprehensive and Detailed Explanation From Exact Extract:
According to the International Building Code (IBC) and reflected in the NCARB Project Planning & Design guidelines, when an existing building has reached the maximum allowable floor area, horizontal extensions (additions) can be made only if there is a proper separation between the existing structure and the new addition. This separation must prevent fire spread and protect structural integrity.
A fire wall is a continuous, fire-resistive barrier designed to prevent the spread of fire between adjacent buildings or different parts of a building. It must have structural stability under fire conditions and can allow the two portions of the building to be treated as separate structures for area calculations, effectively permitting expansion beyond the allowable area of a single building.
Fire-rated shutters (Option A) are movable devices used for compartmentation but are not intended for permanent separation of building areas.
Outside space separation of at least 10 ft (Option B) is generally insufficient for full area separation unless it meets specific fire-resistance rating and distance requirements that typically exceed 10 feet.
Water curtains (Option D) are active fire protection devices but are not substitutes for passive separations required by code to extend allowable building area.
Thus, the correct method to extend a building beyond its maximum allowable area is to separate it with a fire wall, as per NCARB and IBC provisions.
References:
ARE 5.0 PPD - Codes and Regulations, Building Area and Occupancy Separation IBC 2018, Chapter 7: Fire and Smoke Protection Features The Architect's Handbook of Professional Practice, 15th Edition - Fire Protection
質問 # 38
Which of the following roofing types is the most appropriate for installation during below-freezing weather conditions on a roof with less than a 2:12 slope?
- A. A self-sealing shingle roof
- B. A ballasted EPDM roof
- C. A cold-tar built-up roof
正解：B
解説：
Comprehensive and Detailed Explanation From Exact Extract:
Low-slope roofs (< 2:12) require roofing materials suitable for flat or nearly flat conditions:
Cold-tar built-up roofs (A) are difficult to install in freezing weather because the tar cannot be applied or cured properly in cold temperatures.
Self-sealing shingles (B) are generally used on steeper slopes and depend on heat to activate the sealing strips, making them unsuitable for low slopes and cold weather.
Ballasted EPDM (C) is a single-ply synthetic rubber membrane that can be installed in a variety of weather conditions, including below-freezing temperatures. The ballast (usually gravel) holds the membrane in place on low slopes and does not rely on adhesives or heat curing.
Therefore, ballasted EPDM is the most appropriate.
References:
ARE 5.0 PPD - Building Systems and Assemblies, Roofing Materials and Systems The Architect's Handbook of Professional Practice, 15th Edition - Roofing
質問 # 39
An elementary school requires a renovation, selective demolition, and a major addition in order to accommodate a growing student population. The school is located in a temperate coastal climate that requires almost equal heating and cooling days during the year. Good indoor air quality and increased energy efficiency are priorities.
Given the building use and site location, which of the following approaches should be used for the mechanical system in the school?
- A. Hydronic Convection System
- B. Single Duct Constant Air Volume (CAV)
- C. Geothermal System
- D. Evaporative Cooling and Trombe Wall
正解：C
解説：
Comprehensive and Detailed Explanation From Exact Extract:
A geothermal system is highly efficient for climates requiring balanced heating and cooling, such as temperate coastal zones. It provides stable, efficient temperature control and good indoor air quality.
Hydronic convection (A) and CAV systems (C) are less efficient and have slower response.
Evaporative cooling and Trombe walls (D) are best for dry climates.
Geothermal HVAC systems support sustainability goals in schools with fluctuating heating/cooling needs.
References:
ARE 5.0 PPD - Building Systems and Assemblies, Mechanical Systems
The Architect's Handbook of Professional Practice, 15th Edition - Sustainable HVAC
________________________________________
質問 # 40
Which exterior elements control daylighting? Check the three that apply.
- A. Parapet walls
- B. Horizontal girt
- C. Roof overhangs
- D. Horizontal louvers
- E. Vertical louvers
- F. Spandrel panels
正解：C、D、E
解説：
Comprehensive and Detailed Explanation From Exact Extract:
Exterior shading devices control daylight penetration and solar heat gain:
Roof overhangs (A) shade upper window areas and reduce direct sunlight in summer.
Horizontal louvers (C) block high-angle summer sun but allow low-angle winter sun.
Vertical louvers (E) control low-angle sun from east/west directions and reduce glare.
Horizontal girts (B) and spandrel panels (D) are structural or opaque elements, not designed for daylight control.
Parapet walls (F) can shade roof edges but are not primary daylight controls.
References:
ARE 5.0 PPD - Environmental Conditions and Context, Daylighting and Solar Control The Architect's Handbook of Professional Practice, 15th Edition - Sustainable Design
質問 # 41
A recital hall requires a clear span of 75 feet. Special consideration must also be given to the prevention of airplane noise that would interfere with performances.
Which of the following wall-bearing structural solutions will provide the most reasonable and economical roof-framing system to meet these needs?
- A. Precast, prestressed 8' wide concrete tee sections
- B. Laminated wood beams spaced at 6'-0" o.c. supporting tongue-and-groove wood decking
- C. Cast-in-place reinforced concrete slab
- D. Long-span steel joists spaced at 7'-6" o.c. supporting preformed metal decking
正解：C
解説：
Comprehensive and Detailed Explanation From Exact Extract:
For a recital hall needing noise reduction and a 75-foot clear span:
Cast-in-place reinforced concrete slabs (B) provide mass and stiffness, reducing noise transmission (including airplane noise) and offering sound isolation.
Steel joists and wood beams (A, D) are lighter, less dense, and less effective acoustically.
Precast concrete tees (C) may provide structural support but less acoustic mass.
Therefore, cast-in-place concrete best balances span, acoustics, and cost.
References:
ARE 5.0 PPD - Building Systems and Assemblies, Acoustic and Structural Design
質問 # 42
When designing a three-story wood-frame home located in a high wind region, the addition of a green roof with a two-foot soil bed would do which one of the following?
- A. Increase the structure's resistance to racking
- B. Increase the structure's resistance to overturning
- C. Require additional tie-downs
正解：C
解説：
Comprehensive and Detailed Explanation From Exact Extract:
Adding a green roof with a two-foot soil bed significantly increases the dead load on the roof and affects the uplift forces caused by high winds. This heavier roof mass necessitates additional structural tie-downs or anchorage to resist wind uplift and prevent overturning or structural failure.
The added weight does not inherently increase resistance to overturning (A) or racking (C); rather, it increases loads that require structural reinforcement.
References:
ARE 5.0 PPD - Building Systems and Assemblies, Structural Loads and Wind Design The Architect's Handbook of Professional Practice, 15th Edition - Wind-Resistant Design
質問 # 43
For a three-story building, which of the following is considered a vertical irregularity with respect to seismic design?
- A. Interior symmetrically placed shear walls are four times as stiff as perimeter columns.
- B. The building has a significant reentrant corner on the front side.
- C. The effective mass of the roof is one-half the mass of the floor immediately below.
- D. The effective mass of story 2 is two times the mass of story 1.
正解：D
解説：
Comprehensive and Detailed Explanation From Exact Extract:
In seismic design, vertical irregularities are discontinuities or abrupt changes in the building's mass, stiffness, or geometry that can affect seismic response and increase vulnerability during an earthquake. The NCARB ARE 5.0 Project Planning & Design guidelines describe vertical irregularities as changes occurring along the height of the building.
* Option C describes a mass irregularity where story 2 has twice the effective mass of story 1. According to seismic code provisions (such as those referenced in ASCE 7 and adopted by IBC), a vertical mass irregularity is present if the effective seismic mass in any story is more than 150% (1.5 times) or less than 70% (0.7 times) of the mass of an adjacent story. Here, doubling the mass is a significant vertical irregularity that affects the dynamic behavior and design.
* Option A, the roof mass being half that of the floor below, is a decrease in mass but less than the typical threshold of 30% difference (the ratio is 0.5, which is a 50% difference). This might also be considered, but the mass irregularity is more typically flagged at the 1.5x or 0.7x threshold and tends to be more critical in lower floors, making C the clearer choice.
* Option B describes a reentrant corner, which is a horizontal plan irregularity, not vertical. Reentrant corners affect torsional behavior but are not classified as vertical irregularities.
* Option D refers to stiffness differences between interior shear walls and perimeter columns but, when symmetrically placed, this is not necessarily considered an irregularity. Vertical stiffness irregularities are defined by abrupt stiffness changes in vertical elements, but symmetry mitigates torsional effects.
The presence of vertical mass irregularities significantly influences seismic forces distribution, dynamic response, and the potential for torsional motions. Designers must recognize these irregularities per NCARB guidelines and apply appropriate structural detailing and design modifications to meet life-safety requirements.
References:
ARE 5.0 Project Planning & Design Outline: Environmental Conditions and Context - Seismic Design Considerations NCARB ARE 5.0 Guidelines, Seismic Design and Irregularities ASCE 7-16, Chapter 12 - Seismic Design Criteria The Architect's Handbook of Professional Practice, 15th Edition, Chapter 13: Building Codes, Standards, and Regulations
質問 # 44
A church congregation has hired an architect to help them determine the feasibility of converting a retail strip mall space into a new church. The space is 30' wide and 125' long and is in an interior location with tenants on both long sides. The client has requested the following:
Natural light into the central gathering space
Nursery space for young children
Church office space
Adequate restrooms
Visually appealing landscaping
Which of the following should the architect consider to help determine if the project can move forward?
Check the three that apply.
- A. Conduct a demographic survey of church membership to determine the capacity of the new restrooms.
- B. Analyze the existing building exits to determine their adequacy for the new use classification.
- C. Investigate the existing water and sewer services to determine their adequacy for the new use classification.
- D. Engage a landscaping consultant to determine visually appealing landscaping options.
- E. Conduct a demographic survey to determine the number of children to be served by the nursery.
- F. Check the existing roof structure to determine potential locations for skylights.
正解：B、C、F
解説：
Comprehensive and Detailed Explanation From Exact Extract:
When converting a retail strip mall to a church, the architect must verify that the existing building infrastructure supports the new occupancy:
(A) Exits and egress must be adequate per fire and life safety codes for assembly occupancy.
(B) Roof structure must be evaluated for installing skylights to bring natural light into central spaces.
(C) Water and sewer services need to support increased demand, especially with added restrooms and nursery.
Demographic surveys (D, E) inform program design but do not determine feasibility.
Landscaping consultants (F) are part of later design phases, not initial feasibility.
References:
ARE 5.0 PPD - Project Integration of Program and Systems
The Architect's Handbook of Professional Practice, 15th Edition - Adaptive Reuse
質問 # 45
An architect has just received client approval of the Schematic Design documents for a three-story, outpatient medical clinic. The clinic is located within a mixed-use development governed by a City-approved Planned Development (PD) document. The medical clinic design utilizes standardized departmental layouts and includes outpatient clinics, as well as treatment spaces, administrative spaces and public/lobby spaces.
The site needs to accommodate four different vehicular traffic flows: patient traffic, staff traffic, service and delivery traffic, and emergency services traffic. In addition, a pedestrian plaza must connect to the mixed-use development sidewalks. The plaza must provide space for bicycle parking and will serve as the future bus stop.
The site design addresses several challenges related to building orientation. The southeast facade, with excellent visibility from the highway, is the location of all service equipment. The building entrance faces northwest, convenient to the parking but not visible from the highway.
The client believes future patient volumes will outgrow the clinic. The PD document allows for a planned Phase 2 development on the adjacent vacant site to the southwest. Phase 2 would include a second building (2 story, 80,000 BGSF) and/or a parking deck.
Other considerations for the project include:
* Protected tree requirements are defined in the PD document.
* Easy pedestrian access must be provided from Sycamore Boulevard.
* All required parking for the clinic must be accommodated on site.
* Programmed area includes 109,450 Departmental Gross Square Feet (DGSF) / 130,184 Building Gross Square Feet (BGSF).
* Exterior material percentages are dictated by the PD document and shall not exceed specific percentages for Primary and Secondary Finishes.
* All service equipment needs to be screened; see PD document for restrictions.
* Signage opportunities are important to the client.
* Acoustical privacy is a concern of the healthcare system.
The following resources are available for your reference:
* Drawings, including a perspective, plans, and exterior elevations
* Building Program, including client's departmental program and detailed program for Treatment 01 (Infusion)
* Exterior Material Cost Comparisons
* Planned Development Document
* IBC Excerpts, showing relevant code sections
* ADA Excerpts, showing relevant sections from the ADA Standards for Accessible Design The client decides to build-out and lease the second floor shell space as a lunch cafe with cooking classes as an additional function in the evening.
- A. Required parking will be determined based on occupancy of the lunch cafe area.
- B. Required parking will be determined based on the building area.
- C. Required parking will be determined based on the occupancy of the cooking classroom area.
正解：B
解説：
Comprehensive and Detailed Explanation From Exact Extract:
Parking requirements in mixed-use developments governed by Planned Development (PD) documents are typically calculated based on the total building area or gross floor area, especially when multiple uses occur within the same building or floor.
This method simplifies administration and ensures adequate parking for all uses.
Determining parking based only on specific uses such as cafe or cooking classroom (A, B) can lead to under or overestimation, especially with shared parking scenarios.
Thus, building area-based parking calculation is the most reliable and compliant approach.
References:
Planned Development Document
Local Zoning Ordinance Excerpts
ARE 5.0 PPD - Codes and Regulations, Parking Requirements
質問 # 46
In high-rise building construction, which advantages does the use of composite floor decking offer over the use of flat plates? Check the four that apply.
- A. Lightweight concrete may be used to reduce dead weight of the structure.
- B. Metal decks provide a working platform, eliminating the need for wood planking.
- C. Shear connectors are not required between the concrete and the beams below.
- D. Composite decks serve as forms for concrete, eliminating the need for forming and stripping.
- E. Composite decks provide positive reinforcement for concrete slabs.
- F. Steel construction provides decreased sound transmission compared to flat plate systems.
正解：A、B、D、E
解説：
Comprehensive and Detailed Explanation From Exact Extract:
Composite floor decking advantages:
(A) Composite action reinforces slabs, improving strength.
(C) Metal decks serve as working platforms, speeding construction.
(D) Decks act as permanent formwork, eliminating temporary formwork.
(E) Lightweight concrete can be used to reduce structural weight.
(B) Shear connectors are required for composite action, so this is incorrect.
(F) Steel generally increases sound transmission compared to flat plate concrete, so false.
References:
ARE 5.0 PPD - Building Systems and Assemblies, Structural Systems
The Architect's Handbook of Professional Practice, 15th Edition - Steel Construction
質問 # 47 
Refer to the exhibit (photo showing diagonal cracks in a wall).
The structural damage evident in the photograph illustrates a classic example of failure due to which of the following?
- A. In-plane shear
- B. Excessive diaphragm flexure
- C. Overturning
正解：A
解説：
Comprehensive and Detailed Explanation From Exact Extract:
The diagonal cracking pattern seen in the photo is characteristic of in-plane shear failure in structural walls or diaphragms. In-plane shear occurs when lateral forces (such as seismic or wind loads) act parallel to the plane of the wall, causing it to deform in shear. This results in diagonal tension cracks typically forming at roughly
45 degrees, as shown in the image.
Overturning (Option A) refers to the rotation of a wall or structural element about its base or a pivot point due to lateral forces. Overturning typically causes tension cracks at the base or separation at connections rather than diagonal shear cracks.
Excessive diaphragm flexure (Option C) causes bending deformations in horizontal diaphragms such as floors or roofs, usually leading to different cracking patterns, such as horizontal or vertical flexural cracks.
This type of in-plane shear failure is critical to identify for seismic design, as walls or diaphragms must be detailed to resist shear forces to prevent such damage.
References:
ARE 5.0 PPD - Environmental Conditions and Context, Seismic and Lateral Force Design The Architect's Handbook of Professional Practice, 15th Edition - Structural Systems NCARB Seismic Design Guidelines
質問 # 48
Which of the following is the most effective way to reduce noise in mechanical air delivery systems?
- A. Reduce the free area of the supply air grille
- B. Increase the size of the ductwork
- C. Provide exterior duct insulation
正解：B
解説：
Comprehensive and Detailed Explanation From Exact Extract:
Noise in mechanical air delivery systems is often caused by high air velocity and turbulence within ducts, which generate sound that can be transmitted to occupied spaces.
Increasing the size of the ductwork (A) lowers the air velocity for a given volume of air flow, which reduces turbulence and noise generation inside the duct. Larger ducts allow air to move more quietly and efficiently.
Exterior duct insulation (B) can reduce noise transmission through the duct walls but is less effective at controlling the noise generated by airflow itself inside the duct.
Reducing the free area of the supply air grille (C) increases velocity at the grille, potentially increasing noise at the outlet and causing discomfort.
Therefore, the most effective strategy is increasing duct size to reduce air velocity and noise.
References:
ARE 5.0 PPD - Building Systems and Assemblies, HVAC and Acoustics
質問 # 49
An architect has just received client approval of the Schematic Design documents for a three-story, outpatient medical clinic. The clinic is located within a mixed-use development governed by a City-approved Planned Development (PD) document. The medical clinic design utilizes standardized departmental layouts and includes outpatient clinics, as well as treatment spaces, administrative spaces and public/lobby spaces.
The site needs to accommodate four different vehicular traffic flows: patient traffic, staff traffic, service and delivery traffic, and emergency services traffic. In addition, a pedestrian plaza must connect to the mixed-use development sidewalks. The plaza must provide space for bicycle parking and will serve as the future bus stop.
The site design addresses several challenges related to building orientation. The southeast facade, with excellent visibility from the highway, is the location of all service equipment. The building entrance faces northwest, convenient to the parking but not visible from the highway.
The client believes future patient volumes will outgrow the clinic. The PD document allows for a planned Phase 2 development on the adjacent vacant site to the southwest. Phase 2 would include a second building (2 story, 80,000 BGSF) and/or a parking deck.
Other considerations for the project include:
* Protected tree requirements are defined in the PD document.
* Easy pedestrian access must be provided from Sycamore Boulevard.
* All required parking for the clinic must be accommodated on site.
* Programmed area includes 109,450 Departmental Gross Square Feet (DGSF) / 130,184 Building Gross Square Feet (BGSF).
* Exterior material percentages are dictated by the PD document and shall not exceed specific percentages for Primary and Secondary Finishes.
* All service equipment needs to be screened; see PD document for restrictions.
* Signage opportunities are important to the client.
* Acoustical privacy is a concern of the healthcare system.
The following resources are available for your reference:
* Drawings, including a perspective, plans, and exterior elevations
* Building Program, including client's departmental program and detailed program for Treatment 01 (Infusion)
* Exterior Material Cost Comparisons
* Planned Development Document
* IBC Excerpts, showing relevant code sections
* ADA Excerpts, showing relevant sections from the ADA Standards for Accessible Design Refer to the exhibit.
What is the required wall finish for rooms 1201 through 1206 on the first floor?
- A. Wall finishes shall be free of fissures, open joints, or crevices that may retain or permit passage of dirt particles.
- B. Wall finishes shall have sealed seams that are tight and smooth.
- C. Wall finishes shall be smooth, scrubbable, and water-resistant.
正解：C
解説：
Comprehensive and Detailed Explanation From Exact Extract:
Rooms such as medical treatment or healthcare spaces require wall finishes that are smooth, scrubbable, and water-resistant to maintain hygiene and allow for regular cleaning and disinfection.
Tight, sealed seams (A) and absence of fissures (B) are important but part of broader requirements.
The key is surfaces that can withstand cleaning agents and moisture exposure without damage.
This ensures compliance with healthcare facility codes and infection control.
References:
IBC - Healthcare Facilities Chapter
ADA Standards for Accessible Design
ARE 5.0 PPD - Codes and Regulations, Healthcare
質問 # 50
The architect's greatest contribution to good seismic design is in the design of which of the following?
- A. Structural components and connections
- B. Building's interior partition arrangement
- C. Site location and building orientation
- D. Building's plan and cross-sectional configuration
正解：D
解説：
Comprehensive and Detailed Explanation From Exact Extract:
Architects have the most influence on seismic performance through building form and configuration, including the plan and cross-sectional layout. A regular, symmetrical, and well-configured building reduces torsional forces and stress concentrations during seismic events.
Structural components and connections (A) are primarily the engineer's responsibility.
Interior partitions (B) affect non-structural behavior but are less critical to seismic response.
Site location and orientation (D) influence seismic forces but are often fixed or limited by client and site constraints.
Thus, architects significantly improve seismic safety through thoughtful spatial and structural configuration design.
References:
ARE 5.0 PPD - Environmental Conditions and Context, Seismic Design
The Architect's Handbook of Professional Practice, 15th Edition - Earthquake Resistant Design
質問 # 51
Program requirements for a hospital with a clear span of 70 feet include minimal disruption of the hospital routine for future mechanical and electrical repairs and alterations and a maximum economical flexibility of the structure.
Which of the following structural systems is most appropriate?
- A. Interstitial trusses
- B. Composite floor beams
- C. Plate girders
- D. Precast concrete planks
正解：A
解説：
Comprehensive and Detailed Explanation From Exact Extract:
Interstitial trusses provide a structural space between floors specifically designed for mechanical and electrical systems, allowing future repairs and alterations without disrupting hospital routines. This system supports large spans and offers flexible layouts, aligning well with the hospital's needs.
Plate girders (B) and composite beams (C) do not inherently provide interstitial spaces and can limit flexibility.
Precast concrete planks (D) are durable but limit access to mechanical systems, increasing disruption during maintenance.
Therefore, interstitial trusses best support minimal disruption and structural flexibility.
References:
ARE 5.0 PPD - Building Systems and Assemblies
The Architect's Handbook of Professional Practice, 15th Edition - Structural Systems for Healthcare
________________________________________
質問 # 52
Which of the following design elements will affect pedestrian security within a site? Check the four that apply.
- A. Type of landscaping
- B. Number of site access points
- C. Parking quantity
- D. Transparency of fences and barriers
- E. Location of adjacent activity
- F. Impervious pavement
正解：A、B、D、E
解説：
Comprehensive and Detailed Explanation From Exact Extract:
Pedestrian security depends on the design and management of the site to reduce hiding spots, increase visibility, and encourage natural surveillance:
Type of landscaping (B): Dense, tall, or thorny plants can deter access or obstruct views, while low, transparent landscaping improves visibility and security.
Number of site access points (D): More access points can increase vulnerability unless properly controlled.
Transparency of fences and barriers (E): Transparent or see-through fences improve visibility and reduce concealment areas, enhancing security.
Location of adjacent activity (F): Adjacent active uses or areas with high foot traffic provide natural surveillance, discouraging crime.
Impervious pavement (A) relates to surface permeability and drainage but not directly to security.
Parking quantity (C) impacts traffic and congestion more than pedestrian security.
References:
ARE 5.0 PPD - Environmental Conditions and Context, Site Planning and Security The Architect's Handbook of Professional Practice, 15th Edition - Crime Prevention Through Environmental Design (CPTED)
質問 # 53
An architect is designing a mixed-use building and must provide fire separation between the various use types.
Which properties must be considered to meet the fire separation requirements? Check the three that apply.
- A. Wall to structure connection
- B. Length of exit corridor
- C. Air changes per hour
- D. Orientation of building
- E. Occupancy type
- F. Wall assembly materials
正解：A、E、F
解説：
Comprehensive and Detailed Explanation From Exact Extract:
To meet fire separation requirements, the following must be considered:
Occupancy type (B): Different uses have different fire hazard classifications influencing separation.
Wall assembly materials (D): Materials define fire resistance ratings.
Wall to structure connection (A): Proper connection maintains fire separation integrity.
Air changes (C) relate to ventilation, not separation.
Exit corridor length (E) and building orientation (F) affect egress and solar exposure, not fire separation.
References:
ARE 5.0 PPD - Codes and Regulations, Fire Separation
The Architect's Handbook of Professional Practice, 15th Edition - Fire-Resistive Construction
質問 # 54
Which of the following strategies is most appropriate for a new shopping center to be constructed on a nearly flat site flowing into a municipal subsurface storm-drainage system that is at capacity during a 5-year storm?
- A. Conducting all site drainage along the curbs of service streets
- B. Sectioning, sizing, and pitching drainage ways, culverts, and basins to reduce runoff time
- C. Grading roads, locating buildings, and sizing culverts to create retention basins
- D. Extending the storm sewers to catch basins in all roads and drives in the development
正解：C
解説：
Comprehensive and Detailed Explanation From Exact Extract:
When the municipal storm-drain system is at capacity during frequent storms, site design must incorporate on- site stormwater management to reduce runoff and delay peak flows.
Option B is the most effective strategy: grading the site and positioning buildings and infrastructure to create retention basins allows water to be temporarily stored on site, reducing the volume and rate of runoff entering the municipal system. This also aids in groundwater recharge and helps comply with stormwater management regulations.
Extending storm sewers (A) without capacity improvements only increases burden on an already overloaded system.
Reducing runoff time (C) can exacerbate peak flows by quickly directing water to the storm drains.
Conducting drainage along curbs (D) is standard but does not solve capacity issues if the municipal system is overloaded.
Thus, on-site retention and detention through basin creation is preferred.
References:
ARE 5.0 PPD - Environmental Conditions and Context, Site and Stormwater Design The Architect's Handbook of Professional Practice, 15th Edition - Site Planning and Stormwater Management
質問 # 55
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