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100+ Free AHERA Project Designer Practice Questions

Pass your AHERA Asbestos Project Designer Certification Exam (EPA Model Accreditation Plan) exam on the first try — instant access, no signup required.

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2026 Statistics

Key Facts: AHERA Project Designer Exam

70%

Passing Score

EPA AHERA MAP

100 Q

Practice Questions

OpenExamPrep

24 hrs

Initial Training

EPA AHERA MAP

8 hrs

Annual Refresher

EPA AHERA MAP

4 ACH

Containment Air Changes

AHERA / industry consensus

AHERA Project Designer accreditation requires completing a 24-hour EPA-approved initial training course and passing a ~50-question exam with at least 70%. Designers must complete an 8-hour refresher every year to maintain accreditation. Some states require a PE or Architect license to stamp abatement designs.

Sample AHERA Project Designer Practice Questions

Try these sample questions to test your AHERA Project Designer exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under the AHERA Model Accreditation Plan, what is the primary deliverable of an accredited Project Designer?
A.A pre-abatement bulk sampling report
B.Technical specifications, drawings, and a work plan describing the abatement project
C.Daily air monitoring logs during the project
D.The waste shipment record (manifest) at project close-out
Explanation: Under AHERA, the Project Designer translates the Building Inspector's findings and the Management Planner's response action into actionable design documents: technical specifications, drawings, and a written work plan. The designer is not the bulk sampler (Inspector role), the air monitor (often a third party), or the waste hauler.
2How many hours of EPA-approved initial training are required for AHERA Project Designer accreditation?
A.16 hours
B.24 hours
C.32 hours
D.40 hours
Explanation: AHERA Model Accreditation Plan specifies 24 hours of EPA-approved initial training for the Project Designer discipline (the Worker discipline is 32 hours and Contractor/Supervisor is 40 hours). An 8-hour annual refresher is required to maintain accreditation.
3What is the required AHERA annual refresher training duration for an accredited Project Designer?
A.4 hours
B.8 hours
C.16 hours
D.24 hours
Explanation: AHERA requires Project Designers to complete an 8-hour annual refresher to maintain accreditation. Letting the refresher lapse generally requires retaking the full 24-hour initial course. State programs may add additional refresher topics.
4A designer is sizing a negative air machine for a containment that measures 40 ft x 20 ft x 10 ft. At the AHERA-consensus minimum of 4 air changes per hour, what is the required exhaust capacity (CFM) before any leakage allowance?
A.About 267 CFM
B.About 533 CFM
C.About 1,600 CFM
D.About 32,000 CFM
Explanation: Volume = 40 x 20 x 10 = 8,000 cubic feet. Required CFM = (Volume x ACH) / 60 = (8,000 x 4) / 60 = approximately 533 CFM. The designer would then add roughly 25 percent leakage allowance and select NAM units whose rated capacity (after HEPA loading) totals at least that figure, plus a backup unit.
5What is the industry-consensus minimum number of air changes per hour (ACH) inside a Class I asbestos containment under AHERA and OSHA guidance?
A.1 ACH
B.2 ACH
C.4 ACH
D.10 ACH
Explanation: AHERA training, OSHA 1926.1101 Appendix F, and industry consensus call for a minimum of 4 air changes per hour inside a regulated containment to maintain negative pressure and dilute airborne fibers. Some designs use higher ACH for high fiber-release work; 1 to 2 ACH is insufficient.
6What minimum negative pressure (relative to the surrounding clean area) should a Project Designer specify inside a containment, measured by manometer?
A.-0.002 inches of water column
B.-0.02 inches of water column
C.-0.2 inches of water column
D.-2.0 inches of water column
Explanation: AHERA, OSHA, and industry guidance specify a minimum of -0.02 inches of water column (about -5 Pa) measured continuously by manometer between containment interior and clean adjacent space. The other values are either too low to keep critical barriers from collapsing inward (false negative) or unrealistically high.
7In a Project Designer's specification, where is a continuous-reading manometer best located?
A.At the negative air machine exhaust
B.Between the work area and an adjacent clean space, with the recording display outside the containment
C.Inside the equipment (dirty) room only
D.On the building rooftop
Explanation: A manometer measures pressure differential between the containment and an adjacent clean space; the high-pressure tap must be in clean air and the recording display must remain outside the contaminated zone so inspectors and the AHJ can read it without entering. Locating it at the NAM exhaust or inside the dirty room does not measure differential pressure correctly.
8What polyethylene sheeting thickness should a designer specify for primary critical barriers on the floor of a Class I containment?
A.2-mil single layer
B.4-mil single layer
C.6-mil minimum, two layers
D.10-mil single layer
Explanation: Industry-standard specifications call for the floor critical barrier to be 6-mil minimum polyethylene installed in two layers (the upper layer can be replaced during the job as it tears). Walls and ceiling are typically two layers of 4-mil minimum. Thinner sheeting tears under foot traffic; a single layer is not redundant.
9What is the difference between a primary and a secondary critical barrier in containment design?
A.Primary is on the floor, secondary is on the ceiling
B.Primary is the airtight seal against fiber escape (HVAC, doors, penetrations); secondary is the redundant poly layer that provides backup if the primary fails
C.Primary is for Class I work, secondary is for Class III
D.There is no difference
Explanation: Primary critical barriers are the airtight seals at HVAC supply/return openings, doors, windows, electrical penetrations, and other openings; secondary barriers are the redundant poly sheeting layers behind them that provide backup if the primary seal fails. Both must be specified for Class I and most Class II projects.
10Which CSI MasterFormat section is most commonly used for the asbestos remediation specification in an abatement project manual?
A.Division 01 - General Requirements
B.Division 02 84 16 - Asbestos Remediation (within Division 02 Existing Conditions)
C.Division 03 - Concrete
D.Division 22 - Plumbing
Explanation: Under the current CSI MasterFormat (2004 and later), asbestos remediation is specified under Division 02 Existing Conditions, Section 02 84 16 Asbestos Remediation. Older MasterFormat 1995 placed it in Section 02080. Division 01 covers general requirements, not asbestos-specific content.

About the AHERA Project Designer Exam

The AHERA Project Designer exam follows the EPA Model Accreditation Plan (MAP) under the Asbestos Hazard Emergency Response Act. The exam covers technical design of asbestos abatement projects: writing specifications (CSI MasterFormat Division 02 84 16), preparing drawings, calculating negative air machine (NAM) CFM for 4 ACH containment, designing decontamination units and critical barriers, selecting encapsulants and enclosures, planning air monitoring and clearance protocols, sequencing project phases, estimating cost and schedule, and coordinating with engineers, AHJ, and abatement contractors.

Questions

50 scored questions

Time Limit

60 minutes

Passing Score

70%

Exam Fee

Included in training course tuition (EPA-accredited training providers (state-approved per AHERA Model Accreditation Plan))

AHERA Project Designer Exam Content Outline

20%

Designer Role & Project Documents

Translating inspection and management plan into design; specifications, drawings, work plan, bid documents, addenda

20%

Containment & Negative Pressure Design

Critical barriers (primary/secondary), 4 ACH NAM sizing, manometer placement, -0.02 inch H2O target, HEPA filtration

15%

Decontamination Unit Design

3-stage decon (clean/shower/dirty), waste decon, water filtration and discharge, worker flow

15%

Specifications & CSI MasterFormat

Division 02 84 16 Asbestos Remediation, three-part spec (general/products/execution), bid documents, drawings

10%

Air Monitoring & Clearance Design

Baseline/periodic/clearance sampling, aggressive sampling, AHERA <0.01 f/cc, third-party independence, NVLAP/AIHA

10%

Encapsulation, Enclosure & Variance Design

Penetrating vs bridging encapsulants, permanent enclosures, alternative methods, state variance approval

10%

Coordination, Permitting & Cost/Schedule

MEP coordination, NESHAP notification, productivity rates, cost estimation, designer professional liability

How to Pass the AHERA Project Designer Exam

What You Need to Know

  • Passing score: 70%
  • Exam length: 50 questions
  • Time limit: 60 minutes
  • Exam fee: Included in training course tuition

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

AHERA Project Designer Study Tips from Top Performers

1Memorize the 4 air changes per hour (ACH) requirement and the CFM = (Volume x 4) / 60 formula for sizing negative air machines
2Know the three-stage decontamination unit sequence (clean room, shower room, equipment/dirty room) and worker flow direction
3Master critical barrier specifications: 6-mil poly on floor (2 layers), 4-mil minimum on walls/ceiling, taped seams, HVAC isolation
4Understand the difference between penetrating and bridging encapsulants and when each is specified
5Practice CFM calculations including 25% extra capacity for leakage and the -0.02 inch H2O negative pressure target measured by manometer

Frequently Asked Questions

What does the AHERA Project Designer exam cover?

The exam follows the EPA Model Accreditation Plan and covers design of asbestos abatement projects: writing technical specifications (CSI MasterFormat), preparing drawings and work plans, sizing negative air machines for 4 air changes per hour, designing critical barriers and 3-stage decontamination units, specifying air monitoring and clearance protocols, and coordinating with engineers and the AHJ.

How long is the AHERA Project Designer initial training course?

The AHERA Project Designer initial training is a 24-hour EPA-approved course covering design theory, regulations, and specification writing, followed by a written exam. An 8-hour refresher course is required every year to maintain accreditation. Some states require prior Inspector and Management Planner accreditation as a prerequisite.

What is the passing score on the AHERA Project Designer exam?

Most EPA-approved AHERA Project Designer exams require a minimum score of 70% to pass. The exam typically contains around 50 multiple-choice questions covering specifications, drawings, containment calculations, decon design, encapsulation, air monitoring design, and project coordination.

How often is AHERA Project Designer accreditation renewed?

AHERA Project Designer accreditation must be renewed annually by completing an 8-hour refresher training course covering regulatory updates, new design methods, and current industry practices. Designers who let accreditation lapse may need to retake the full 24-hour initial course.

Do AHERA Project Designers need a PE or Architect license?

Federal AHERA does not require designers to be licensed Professional Engineers or Architects, but several states require a PE or Architect stamp on abatement design documents, especially for school and public buildings. Always check your state asbestos program and engineering board requirements before stamping designs.