IICRC Commercial Drying Specialist
(CDS) Questions And 100% Correct
Answers| 2026 Updated
The first principle of restoration as described by the S500 on a restoration project
is to - ANSWER: Account for the health and safety of occupants
Describe at least three characteristics of commercial drying projects that make it
different from typical residential ones - ANSWER: Complex wiring
Public access and security
Multiple stakeholders
Electrical power
Complex construction, materials, codes
The S500 describes Commercial Buildings in the following way:
•Commercial
•Industrial
•Institutional
•Complex residential - ANSWER: Commercial- mixed use buildings, retail,
office/warehouses, multi/tenant buildings
Industrial- used for manufacturing/distribution centers , foundries, petrochemical
plants, water/sewage treatment facilities
Institutional- public use facilities, schools, colleges, hospitals, libraries, offices
Complex residential- condos, apartments, hotels, private mansions
Decisions made following the initial inspection includes, but are not necessarily
limited to
-
ANSWER: Identify potential hazards and perform risk assessments
Preliminary determination of category of water
Establish dry standards
, Determine drying goals
Identify need for any specialized experts
Category of water refers to - ANSWER: The range of
contamination in the water
Who determines the Category of water? -
ANSWER: The restorer
Classes of water refers to - ANSWER: An approximation of the degree of
water absorption and evaporation
A dry standard is - ANSWER: Approximation of the MC/ML of
materials prior to the water intrusion
Drying goals are - ANSWER: Target MC/ML of materials after
water intrusion
The drying goals should be set that would be expected to: and -
ANSWER: Return structure, systems or contents to an acceptable condition and
inhibit ,microbial growth
If the restorer has been informed by the customer that water did not affect adjacent
areas or floors, the restorer is safe-to assume that. True or False -
ANSWER: False, check all adjacent areas
Satisfactory completion of a job or phase of a job should be obtained
when - ANSWER: Returning the building or a portion of it to the
client
According to the current IICRC S500 Standard, a restorer should establish an
initial dehumidification capacity needed on a project, but should be modified after
that based on -
ANSWER: Subsequent or following days psychrometric readings
Some of the other project factors that may need to be considered in adjusting the
dehumidification requirement can be (describe at least three) - ANSWER: An
agreed upon deadline to complete the job
(CDS) Questions And 100% Correct
Answers| 2026 Updated
The first principle of restoration as described by the S500 on a restoration project
is to - ANSWER: Account for the health and safety of occupants
Describe at least three characteristics of commercial drying projects that make it
different from typical residential ones - ANSWER: Complex wiring
Public access and security
Multiple stakeholders
Electrical power
Complex construction, materials, codes
The S500 describes Commercial Buildings in the following way:
•Commercial
•Industrial
•Institutional
•Complex residential - ANSWER: Commercial- mixed use buildings, retail,
office/warehouses, multi/tenant buildings
Industrial- used for manufacturing/distribution centers , foundries, petrochemical
plants, water/sewage treatment facilities
Institutional- public use facilities, schools, colleges, hospitals, libraries, offices
Complex residential- condos, apartments, hotels, private mansions
Decisions made following the initial inspection includes, but are not necessarily
limited to
-
ANSWER: Identify potential hazards and perform risk assessments
Preliminary determination of category of water
Establish dry standards
, Determine drying goals
Identify need for any specialized experts
Category of water refers to - ANSWER: The range of
contamination in the water
Who determines the Category of water? -
ANSWER: The restorer
Classes of water refers to - ANSWER: An approximation of the degree of
water absorption and evaporation
A dry standard is - ANSWER: Approximation of the MC/ML of
materials prior to the water intrusion
Drying goals are - ANSWER: Target MC/ML of materials after
water intrusion
The drying goals should be set that would be expected to: and -
ANSWER: Return structure, systems or contents to an acceptable condition and
inhibit ,microbial growth
If the restorer has been informed by the customer that water did not affect adjacent
areas or floors, the restorer is safe-to assume that. True or False -
ANSWER: False, check all adjacent areas
Satisfactory completion of a job or phase of a job should be obtained
when - ANSWER: Returning the building or a portion of it to the
client
According to the current IICRC S500 Standard, a restorer should establish an
initial dehumidification capacity needed on a project, but should be modified after
that based on -
ANSWER: Subsequent or following days psychrometric readings
Some of the other project factors that may need to be considered in adjusting the
dehumidification requirement can be (describe at least three) - ANSWER: An
agreed upon deadline to complete the job
