EDGE-Expert Exam Dumps Pass with Updated May-2026 Tests Dumps [Q44-Q60]

Lamp efficiency in EDGE is a key factor in reducing energy consumption for lighting, a critical green building design strategy. The EDGE User Guide defines lamp efficiency: “In EDGE, a moreefficient lamp is one that provides higher lumens per watt, meaning it produces more light output (lumens) for the same electrical input (watts). This metric, known as luminous efficacy, is used to evaluate lighting efficiency measures like EEM22 – Efficient Lighting for Internal Areas” (EDGE User Guide, Section 4.4: Lighting Efficiency Measures). Option A, more lumens/watt, directly aligns with this definition, as it indicates greater efficiency in converting electricity to light. Option B (lower watts/m²) refers to lighting power density, which is a design metric, not a lamp characteristic: “Watts/m² is a measure of lighting power density for a space, not the efficiency of an individual lamp” (EDGE Methodology Report Version 2.0, Section 5.4: Lighting Calculations). Option C (longer life) relates to durability, not efficiency: “Lamp life affects maintenance costs but is not a direct measure of energy efficiency in EDGE” (EDGE User Guide, Section 4.4: Lighting Efficiency Measures). Option D (lower wattage) alone does not indicate efficiency, as a lamp with lower wattage but poor light output would be less efficient: “Lower wattage must be paired with adequate lumens to improve efficiency” (EDGE Methodology Report Version 2.0, Section 5.4: Lighting Calculations). Thus, more lumens/watt (Option A) describes a more efficient lamp.
Reference:EDGE User Guide Version 2.1, Section 4.4: Lighting Efficiency Measures; EDGE Methodology Report Version 2.0, Section 5.4: Lighting Calculations.

EDGE Auditors must meet specific requirements to maintain their licensed status, ensuring they remain active and competent in their role. The EDGE Expert and Auditor Protocols provide detailed guidance: “To maintain their licensed status, EDGE Auditors must undertake at least one building project audit every two years. This requirement ensures that Auditors remain actively engaged in the certification process and maintain their practical experience in verifying EDGE projects” (EDGE Expert and Auditor Protocols, Section 5.1:
Maintaining Auditor Status). Option A, undertake at least one building project audit every two years, directly aligns with this requirement. Option B (attend refresher training for at least two hours every two years) and Option C (attend refresher training for at least two hours every three years) are incorrect, as the protocols specify a different training requirement: “EDGE Auditors must attend refresher training as required by IFC, typically every three years, but the duration is not specified as a minimum of two hours; the focus is on completing the training, not the exact hours” (EDGE Expert and Auditor Protocols, Section 5.1: Maintaining Auditor Status). Option D (undertake at least one building project audit every three years) is also incorrect, as the required frequency is every two years, not three: “A three-year interval for audits does not meet the requirement of one audit every two years, which is necessary to ensure ongoing competence” (EDGE Expert and Auditor Protocols, Section 5.1: Maintaining Auditor Status). The EDGE User Guide supports this by stating: “Auditors maintain their status by conducting at least one audit every two years, ensuring they stay familiar with EDGE standards and procedures through active practice” (EDGE User Guide, Section 6.5:
Working with EDGE Auditors). Additionally, the protocols note: “Failure to conduct an audit within two years may result in a lapse of Auditor status, requiring recertification through additional training or re- examination” (EDGE Expert and Auditor Protocols, Section 5.2: Recertification Conditions). Thus, undertaking at least one audit every two years (Option A) is the correct requirement for maintaining EDGE Auditor status.
Reference:EDGE Expert and Auditor Protocols, Section 5.1: Maintaining Auditor Status, Section5.2:
Recertification Conditions; EDGE User Guide Version 2.1, Section 6.5: Working with EDGE Auditors.

EDGE recognizes renewable energy sources for their contribution to reducing carbon emissions in hot water production. The EDGE User Guide defines renewable hot water technologies: “Solar hot water collectors are considered a renewable source in EDGE, as they directly use solar energy to heat water, reducing reliance on fossil fuel-based energy” (EDGE User Guide, Section 4.2: Energy Efficiency Measures). Option B, solar hot water collectors, matches this description as it harnesses solar energy, a renewable resource. Option A (ground source heat pump) uses electricity to transfer heat from the ground, which is efficient but not renewable unless the electricity is from a renewable source: “Ground source heat pumps are efficient but rely on electrical input, not classified as a renewable source in EDGE” (EDGE Methodology Report Version 2.0, Section 5.1: Energy Efficiency Metrics). Option C (high efficiency boiler) typically uses gas or electricity, not a renewable source: “Boilers, even high-efficiency ones, are not renewable as they burn fuel or use grid electricity” (EDGE User Guide, Section 4.2: Energy Efficiency Measures). Option D (preheating water using waste heat from the generator) is a heat recovery method, not a renewable source: “Waste heat recovery improves efficiency but is not considered a renewable energy source in EDGE” (EDGE Methodology Report Version 2.0, Section 5.3: Energy Measures). Thus, solar hot water collectors (Option B) is the renewable source technology.
Reference:EDGE User Guide Version 2.1, Section 4.2: Energy Efficiency Measures; EDGE Methodology Report Version 2.0, Section 5.1: Energy Efficiency Metrics, Section 5.3: Energy Measures.

Increasing the glazing area in an office building affects various aspects of energy consumption due to changes in heat gain, heat loss, and natural light availability, but it does not influence all buildingsystems. The EDGE User Guide explains the impacts of glazing: “Increasing the glazing area (window-to-wall ratio, WWR) in an office building typically increases cooling demand due to higher solar heat gain, increases heating demand in colder climates due to greater heat loss through windows, and reduces lighting energy by allowing more natural daylight, assuming proper daylighting design” (EDGE User Guide, Section 3.5: Passive Design Strategies). Option A (cooling demand) is affected, as more glazing increases solar heat gain: “Higher WWR leads to greater cooling loads in hot climates due to increased solar radiation entering the building” (EDGE Methodology Report Version 2.0, Section 5.2: Energy Calculation Methods). Option B (heating demand) is also impacted, particularly in cooler climates: “Larger glazing areas increase heat loss in cold climates, raising heating demand due to the lower thermal resistance of windows compared to walls” (EDGE User Guide, Section 4.1: Insulation Measures). Option C (lighting energy) is affected, as more glazing can reduce the need for artificial lighting: “Increased glazing can lower lighting energy by enhancing daylight penetration, provided glare is controlled” (EDGE User Guide, Section 4.4: Lighting Efficiency Measures). However, Option D (hot water demand) is not impacted by glazing area, as hot water use is tied to occupant activities (e.
g., showers, cleaning) rather than building envelope design: “Hot water demand in EDGE is determined by occupant use patterns, such as the number of showers or laundry cycles, and is not influenced by glazing area or WWR” (EDGE Methodology Report Version 2.0, Section 4.2: Water Savings Calculations). The EDGE User Guide further confirms: “Glazing area impacts energy-related metrics like cooling, heating, and lighting, but has no direct effect on hot water demand, which is calculated separately based on usage assumptions” (EDGE User Guide, Section 5.2: Water Efficiency Measures). Therefore, increasing glazing area does not impact hot water demand (Option D).
Reference:EDGE User Guide Version 2.1, Section 3.5: Passive Design Strategies, Section 4.1: Insulation Measures, Section 4.4: Lighting Efficiency Measures, Section 5.2: Water Efficiency Measures; EDGE Methodology Report Version 2.0, Section 5.2: Energy Calculation Methods, Section 4.2: Water Savings Calculations.

The EDGE certification process involves specific steps and fees, including a registration fee, to formally enter a project into the certification system. The EDGE Certification Protocol outlines the timing of the registration fee: “The registration fee must be paid prior to registration of the project in the EDGE system. This fee is required to activate the project in the EDGE App, allowing the Client to begin the self-assessment process and proceed toward certification” (EDGE Certification Protocol, Section 2.1: Registration). Option B, prior to registration, directly matches this requirement, as payment is a prerequisite for starting the certification process. Option A (prior to site audit) is incorrect, as the site audit occurs later, at the post-construction stage:
“The site audit takes place after practical completion, well after registration, so the registration fee is not tied to this stage” (EDGE Certification Protocol, Section 3.4: Post-Construction Requirements). Option C (after the registration) is also incorrect, as payment must precede registration: “Registration cannot be completed without payment of the registration fee, ensuring the project is officially entered into the system” (EDGE User Guide, Section 6.1: Project Preparation). Option D (after certification has been awarded) is wrong, as certification occurs at the end of the process, after registration and audits: “Certification fees may be paid after certification, but the registration fee is required at the outset, before any assessment begins” (EDGE Certification Protocol, Section 3.3: Certification Decision). The EDGE User Guide further clarifies: “Paying the registration fee prior to registration ensures that the project is formally recognized by the EDGE system, enabling access to the software and certification resources” (EDGE User Guide, Section 6.1: Project Preparation). Thus, the registration fee must be paid prior to registration (Option B).
Reference:EDGE Certification Protocol, Section 2.1: Registration, Section 3.4: Post-Construction Requirements, Section 3.3: Certification Decision; EDGE User Guide Version 2.1, Section 6.1: Project Preparation.

Maintaining EDGE Auditor status involves specific requirements to ensure ongoing competence. The EDGE Expert and Auditor Protocols outline these requirements: “To maintain their status, EDGE Auditors must perform at least one project site audit every two years, attend refresher training as required by IFC, and stay updated by studying the EDGE user guides and protocols as they are revised” (EDGE Expert and Auditor Protocols, Section 5.1: Maintaining Auditor Status). Option A (performing at least one project site audit every two years) is explicitly required to demonstrate active engagement. Option B (studying the EDGE user guides as updated) is also necessary to stay current with program changes. Option D (attending refresher training) is mandated to ensure continued education. However, Option C (retaking the auditor exam) is not a requirement for maintaining status: “Once certified, EDGE Auditors are not required to retake the exam to maintain their status, though they may need to retake it if their certification lapses or if significant program changes occur” (EDGE Expert and Auditor Protocols, Section 5.2: Recertification Conditions). Since the question focuses on maintaining status, not recertification after lapse, retaking the exam is not a standard requirement. Thus, retaking the auditor exam (Option C) does not contribute to maintaining Auditor status.
Reference:EDGE Expert and Auditor Protocols, Section 5.1: Maintaining Auditor Status, Section 5.2:
Recertification Conditions.

The post-construction stage in EDGE certification requires evidence to confirm that the efficiency measures claimed in the design stage have been implemented as specified. For window glazing, which affects energy efficiency through its U-value (thermal transmittance) and SHGC (Solar Heat Gain Coefficient), the EDGE Certification Protocol provides clear requirements: “At the post-construction stage, the Client must provide manufacturer’s data sheets for the window glazing measure, showing the make and model, U-value, and SHGC of the installed glass, to confirm that the glazing matches the specifications claimed in the self- assessment and meets the energy efficiency requirements” (EDGE Certification Protocol, Section 3.4: Post- Construction Requirements). Option C, manufacturer’s data sheets showing the make and model, U-value, and SHGC of the installed glass, directly matches this requirement, as it provides the specific technical data needed to verify compliance. Option A (design building elevations marking the window glass specifications) is relevant at the design stage, not post-construction: “Design elevations are required at the preliminary stage to show intended glazing specifications, not after construction” (EDGE Certification Protocol, Section 3.2:
Audit Requirements). Option B (bill of quantities with specifications highlighted) is insufficient on its own, as it may not provide detailed technical data: “Bills of quantities may support purchase verification, but manufacturer’s data sheets are required for technical specifications like U-value and SHGC” (EDGE Certification Protocol, Section 3.4: Post-Construction Requirements). Option D (window schedule showing major glass types) is helpful but not sufficient, as it lacks the detailed technical data: “Window schedules may indicate glass types, but they do not replace the need for manufacturer’s data sheets with U-value and SHGC at post-construction” (EDGE User Guide, Section 6.2: Documentation Requirements). The EDGE User Guide further clarifies: “For glazing measures, post-construction evidence must confirm the installed product’s performance through manufacturer’s data sheets, ensuring alignment with the design-stage claims” (EDGE User Guide, Section 4.1: Insulation Measures). Thus, manufacturer’s data sheets (Option C) are required at the post-construction stage.
Reference:EDGE Certification Protocol, Section 3.4: Post-Construction Requirements, Section 3.2: Audit Requirements; EDGE User Guide Version 2.1, Section 6.2: Documentation Requirements, Section 4.1:
Insulation Measures.

The EDGE standard is designed to be a practical, focused tool for green building certification, emphasizing specific resource efficiency metrics. The EDGE User Guide describes its characteristics: “EDGE is a simple, fast, and smart tool for green building certification. It provides an intuitive interface with a powerful engine that accounts for local climate and building use (simple), identifies measures with the best return on investment (fast), and displays capital costs and payback periods (smart)” (EDGE User Guide, Section 1.1:
Introduction to EDGE). Options A, C, and D align with these descriptions. However, Option B (holistic approach that takes into account wider sustainability issues) is not a characteristic of EDGE, as the standard focuses narrowly on energy, water, and embodied energy in materials, not broader sustainability issues like biodiversity or social equity. This is clarified in the EDGE Certification Protocol: “EDGE is not a holistic sustainability standard; it specifically targets resource efficiency in energy, water, and materials, excluding wider sustainability metrics such as indoor air quality or ecological impact” (EDGE Certification Protocol, Section 1.2: Scope of EDGE Standard). Thus, Option B is not a characteristic of the EDGE standard.
Reference: EDGE User Guide Version 2.1, Section 1.1: Introduction to EDGE; EDGE Certification Protocol, Section 1.2: Scope of EDGE Standard.

The EDGE audit process requires that the documentation submitted by the Client accurately reflects the self- assessment in the EDGE software, ensuring consistency and transparency. The EDGE Expert and Auditor Protocols address discrepancies in documentation: “If an EDGE Auditor identifies a discrepancy between the submitted documentation and the self-assessment PDF, such as measures being claimed that were not selected in the EDGE software, the Auditor must inform the Client to update the EDGE software to reflect the correct measures and prepare a new PDF for submission. This ensures that the audit is based on an accurate representation of the project’s claims” (EDGE Expert and Auditor Protocols, Section 4.2: Evidence Verification). Option C, inform the Client to update the EDGE software and prepare a new PDF, directly aligns with this protocol, as it corrects the error at the source and ensures the self-assessment matches the claimed measures. Option A (ask for advice from the EDGE Partner) is unnecessary, as the protocol provides clear guidance: “Auditors are expected to follow standard procedures for discrepancies without needing to consult the EDGE Partner, unless the issue involves a policy interpretation beyond the protocols” (EDGE Expert and Auditor Protocols, Section 4.1: Audit Process). Option B (modify the self-assessment and submit) is unethical and prohibited, as Auditors cannot alter the Client’s submission: “The Auditor must not modify the Client’s self-assessment in the EDGE software, as this compromises the independence of the audit process; the Client is responsible for updating the assessment” (EDGE Certification Protocol, Section 3.2:
Audit Requirements). Option D (ignore the error on PDF) is also incorrect, as ignoring discrepancies violates audit integrity: “All discrepancies between the PDF and submitted documents must be resolved before the audit proceeds, as ignoring errors could lead to incorrect certification outcomes” (EDGE Expert and Auditor Protocols, Section 4.2: Evidence Verification). The EDGE User Guide further reinforces: “The self- assessment PDF must accurately reflect the measures selected in the EDGE software, and any mismatch requires the Client to revise the assessment to ensure a fair and transparent audit” (EDGE User Guide, Section
6.2: Documentation Requirements). Thus, the Auditor should inform the Client to update the software and prepare a new PDF (Option C).
Reference:EDGE Expert and Auditor Protocols, Section 4.2: Evidence Verification, Section 4.1: Audit Process; EDGE Certification Protocol, Section 3.2: Audit Requirements; EDGE User Guide Version 2.1, Section 6.2: Documentation Requirements.

The post-construction stage in EDGE certification requires evidence to confirm that the efficiency measures claimed in the design stage have been implemented as specified. For window glazing, which affects energy efficiency through its U-value (thermal transmittance) and SHGC (Solar Heat Gain Coefficient), the EDGE Certification Protocol provides clear requirements: “At the post-construction stage, the Client must provide manufacturer’s data sheets for the window glazing measure, showing the make and model, U-value, and SHGC of the installed glass, to confirm that the glazing matches the specifications claimed in the self- assessment and meets the energy efficiency requirements” (EDGE Certification Protocol, Section 3.4: Post- Construction Requirements). Option C, manufacturer’s data sheets showing the make and model, U-value, and SHGC of the installed glass, directly matches this requirement, as it provides the specific technical data needed to verify compliance. Option A (design building elevations marking the window glass specifications) is relevant at the design stage, not post-construction: “Design elevations are required at the preliminary stage to show intended glazing specifications, not after construction” (EDGE Certification Protocol, Section 3.2:
Audit Requirements). Option B (bill of quantities with specifications highlighted) is insufficient on its own, as it may not provide detailed technical data: “Bills of quantities may support purchase verification, but manufacturer’s data sheets are required for technical specifications like U-value and SHGC” (EDGE Certification Protocol, Section 3.4: Post-Construction Requirements). Option D (window schedule showing major glass types) is helpful but not sufficient, as it lacks the detailed technical data: “Window schedules may indicate glass types, but they do not replace the need for manufacturer’s data sheets with U-value and SHGC at post-construction” (EDGE User Guide, Section 6.2: Documentation Requirements). The EDGE User Guide further clarifies: “For glazing measures, post-construction evidence must confirm the installed product’s performance through manufacturer’s data sheets, ensuring alignment with the design-stage claims” (EDGE User Guide, Section 4.1: Insulation Measures). Thus, manufacturer’s data sheets (Option C) are required at the post-construction stage.
Reference:EDGE Certification Protocol, Section 3.4: Post-Construction Requirements, Section 3.2: Audit Requirements; EDGE User Guide Version 2.1, Section 6.2: Documentation Requirements, Section 4.1:
Insulation Measures.

The EDGE App assigns specific user roles to manage project collaboration and access within the software.
The EDGE User Guide details the available roles: “In the EDGE App, user roles for project teams include Project Admin, who manages the project and has full access to edit and submit assessments, and other roles like Project Collaborator for team members contributing to the assessment. The Project Admin is responsible for overseeing the project’s self-assessment and coordinating with the team” (EDGE User Guide, Section 2.2:
Project Setup). Option A, Project Admin, is explicitly listed as a role in the EDGE App. Option B (Project Architect) and Option C (Project Engineer) are not defined roles in the software, as the guide clarifies: “Roles like architect or engineer are project-specific titles, not EDGE App roles; team members are grouped under Project Admin or Collaborator” (EDGE User Guide, Section 2.2: Project Setup). Option D (Project Auditor) is also incorrect, as auditors have a separate role outside the project team: “Project Auditors are assigned by the Certification Provider and access the assessment separately, not as partof the project team’s roles in the EDGE App” (EDGE Certification Protocol, Section 3.1: Certification Process). Thus, Project Admin (Option A) is the correct user role available in the EDGE App.
Reference:EDGE User Guide Version 2.1, Section 2.2: Project Setup; EDGE Certification Protocol, Section
3.1: Certification Process.

The roles and responsibilities in the EDGE certification process are clearly defined to ensure a streamlined audit process. The EDGE Certification Protocol explicitly assigns the responsibility for providing documentation to support green building measures: “The EDGE Client is responsible for providing a full set of documentation to support each green building measure selected in the project assessment. This includes drawings, specifications, manufacturer’s data sheets, and any other evidence required by the Auditor to verify compliance with the EDGE standard during both the design and post-construction stages” (EDGE Certification Protocol, Section 3.1: Certification Process). Option A, the Client, directly aligns with this requirement, as the Client (typically the project owner or developer) is the primary party submitting the project for certification and must provide all necessary evidence. Option B (the Facility Manager) is incorrect because the Facility Manager’s role is operational, not related to certification documentation: “Facility Managers may assist with operational data for EDGE Zero Carbon certification but are not responsible for providing design or construction documentation” (EDGE Certification Protocol, Section 2.3: Certification Levels). Option C (the Building Inspector) is also incorrect, as this role is external to the EDGE process and not involved in certification: “Building Inspectors ensure compliance with local codes, not EDGE requirements” (EDGE User Guide, Glossary). Option D (the project design team) may prepare documentation, but the responsibility lies with the Client to submit it: “While the design team often prepares technical documents, it is the Client’s responsibility to compile and provide them to the Auditor as part of the certification process” (EDGE Expert and Auditor Protocols, Section 2.1: Roles of EDGE Client). The EDGE User Guide further reinforces this by stating: “The Client must ensure all supporting documentation is complete and accessible to the Auditor to avoid delays in the certification process” (EDGE User Guide, Section 6.2: Documentation Requirements). Therefore, the Client (Option A) is responsible for providing the full set of documentation for the audit.
Reference:EDGE Certification Protocol, Section 3.1: Certification Process, Section 2.3: Certification Levels; EDGE Expert and Auditor Protocols, Section 2.1: Roles of EDGE Client; EDGE User Guide Version 2.1, Section 6.2: Documentation Requirements, Glossary.

In hot climates, reducing heat gain through building envelopes is a key strategy for energy efficiency, as emphasized in EDGE’s green building design principles. The EDGE User Guide discusses solar reflectivity (measured by the Solar Reflectance Index, SRI) for walls and roofs, stating: “Higher SRI values indicate greater reflectivity, which reduces heat absorption and lowers cooling energy demand in hot climates. For walls in hot climates, an SRI of 0.7 or higher is recommended to maximize energy savings” (EDGE User Guide, Section 3.5: Passive Design Strategies). The options provided are 0.2, 0.3, 0.4, and 0.7. Since 0.7 is the highest SRI value among the choices, it reflects the most solar radiation, thereby reducing the cooling load andimproving energy efficiency in a hot climate, as per EDGE’s guidance. Options A, B, and C have lower SRI values and would result in greater heat absorption, increasing energy use for cooling.
Reference:EDGE User Guide Version 2.1, Section 3.5: Passive Design Strategies.

The eligibility criteria for becoming an EDGE Expert are designed to ensure candidates have sufficient background to advise on green building projects. The EDGE Expert and Auditor Protocols specify the requirements for candidates without a construction-related higher qualification: “Applicants without a higher education qualification in a construction-related field (e.g., architecture, engineering) must have a higher education qualification in any field plus at least three years of experience in the construction industry as a skilled professional or tradesperson to qualify for EDGE Expert training and certification” (EDGE Expert and Auditor Protocols, Section 3.1: Eligibility Criteria). Option C, at least 3 years, directly matches this requirement. Option A (at least 1 year) and Option B (at least 2 years) are insufficient, as they fall below the minimum threshold: “Less than three years of experience does not meet the eligibility criteria for candidates without a construction-related degree, as this duration ensures adequate practical knowledge of building design and construction processes” (EDGE Expert and Auditor Protocols, Section 3.1: Eligibility Criteria).
Option D (at least 5 years) exceeds the minimum requirement, which is not necessary: “While additional experience is beneficial, the minimum requirement for EDGE Expert eligibility is three years for non- construction degree holders” (EDGE User Guide, Section 6.4: Working with EDGE Experts). The EDGE Certification Protocol also notes: “The three-year experience requirement for non-construction graduates ensures that EDGE Experts have sufficient industry exposure to provide meaningful consultancy, balancing accessibility with competence” (EDGE Certification Protocol, Section 1.3: Program Structure). Additionally, the EDGE User Guide clarifies: “Candidates with a construction-related degree are exempt from the experience requirement, but those without such a degree must demonstrate at least three years of relevant experience to qualify for the EDGE Expert exam” (EDGE User Guide, Section 6.4: Working with EDGE Experts). Therefore, at least 3 years of experience (Option C) is required for applicantswithout a construction- related higher qualification.
Reference:EDGE Expert and Auditor Protocols, Section 3.1: Eligibility Criteria; EDGE Certification Protocol, Section 1.3: Program Structure; EDGE User Guide Version 2.1, Section 6.4: Working with EDGE Experts.

Water consumption in hotels varies significantly based on usage patterns, with guest-related activities often dominating the water use breakdown. The EDGE User Guide provides detailed insights into water use in hotels: “In a typical 3-star business hotel, the largest contributor to water consumption is showers in guest rooms, accounting for approximately 40-50% of total water use due to frequent guest showers, especially in urban hotels with high occupancy. Laundry, toilets, and faucets also contribute, but to a lesser extent, with laundry at 15-20%, toilets at 10-15%, and faucets at 5-10%” (EDGE User Guide, Section 5.2: Water Efficiency Measures). Option A, showers in guest rooms, aligns with this breakdown as the element likely to consume the most water. Option B (laundry) is significant but lower than showers: “Laundry in 3-star hotels consumes less water than showers, as laundry is typically centralized and less frequent than daily guest showers” (EDGE Methodology Report Version 2.0, Section 4.2: Water Savings Calculations). Option C (toilets in lobby area) is a minor contributor, as lobby toilets serve fewer users compared to guest rooms:
“Toilets in public areas like the lobby have lower usage compared to guest room facilities, contributing only a small fraction of total water use in hotels” (EDGE User Guide, Section 5.2: Water Efficiency Measures).
Option D (faucets in guest rooms) also uses less water than showers: “Faucets in guest rooms, used for handwashing or brushing teeth, have lower flow rates and usage frequency compared to showers, which often run for 5-10 minutes per use” (EDGE Methodology Report Version 2.0, Section 4.2: Water Savings Calculations). The EDGE User Guide further elaborates: “In business hotels, showers dominate water use due to high occupancy and guest behavior, making measures like low-flow shower heads particularly effective for water savings” (EDGE User Guide, Section 5.2: Water Efficiency Measures). The EDGE Methodology Report adds: “For a 3-star hotel with 100 rooms and 70% occupancy, showers can account for 45 liters per guest per day, compared to 15 liters for laundry, 10 liters for toilets, and 5 liters for faucets, based on standard usage assumptions” (EDGE Methodology Report Version 2.0, Section 4.2: Water Savings Calculations).
Thus, showers in guest rooms (Option A) are likely to consume the most water in this context.
Reference:EDGE User Guide Version 2.1, Section 5.2: Water Efficiency Measures; EDGE Methodology Report Version 2.0, Section 4.2: Water Savings Calculations.

Insulation materials in EDGE are evaluated for their thermal performance and embodied energy as part of materials efficiency measures. The EDGE User Guide lists common insulation options: “In EDGE, insulation materials for walls, roofs, and floors include mineral wool, polyurethane,polystyrene, and fiberglass, which are selected for their low thermal conductivity and availability in most markets” (EDGE User Guide, Section
7.2: Materials Efficiency Measures). Options A (mineral wool), B (polyurethane), and D (polystyrene) are explicitly mentioned as insulation materials in EDGE. Option C, polypropylene, is not listed as an insulation material, as confirmed by the EDGE Methodology Report: “Polypropylene is a plastic material often used in packaging or pipes, but it is not recognized in EDGE as an insulation material due to its poor thermal resistance compared to standard insulation options like polystyrene or polyurethane” (EDGE Methodology Report Version 2.0, Section 6.1: Embodied Energy in Materials). The EDGE software’s material database further excludes polypropylene from insulation options, focusing instead on materials with established thermal properties for building envelopes. Thus, polypropylene (Option C) is not an insulation option in EDGE.
Reference:EDGE User Guide Version 2.1, Section 7.2: Materials Efficiency Measures; EDGE Methodology Report Version 2.0, Section 6.1: Embodied Energy in Materials.

The baseline assumptions in EDGE software, known as the Base Case, are critical for calculating resource savings and are determined using standardized data. The EDGE Methodology Report explains: “Baseline assumptions in EDGE, referred to as the Base Case, are determined by market surveys of typical construction practices in the project’s country, reflecting common materials, systems, and design practices for the selected typology and location” (EDGE Methodology Report Version 2.0, Section 3.1: Base Case Determination).
Option C, market survey of typical construction practices, aligns with this methodology. Option A (EDGE software users) is incorrect, as users do not set the baseline; they input project-specific data. Option B (EDGE Auditors) is also incorrect, as auditors verify compliance, not establish baselines. Option D (market survey of best construction practices) is wrong because EDGE uses typical practices, not best practices, to create a realistic benchmark, as clarified in the EDGE User Guide: “The Base Case reflects typical local practices, not best practices, to ensure a fair comparison for resource savings” (EDGE User Guide, Section 2.3: Using the EDGE App).
Reference:EDGE Methodology Report Version 2.0, Section 3.1: Base Case Determination; EDGE User Guide Version 2.1, Section 2.3: Using the EDGE App.