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質問 # 64
Internal treatments for penetrating damp (when external repairs are not possible) should:
- A. Be considered only if external repairs cannot be made, with appropriate membranes installed behind affected linings
- B. Always be the first option
- C. Be used alone without external investigation
- D. Never be used
正解：A
質問 # 65
A damp proof course (DPC) in traditional construction serves to:
- A. Support the roof only
- B. Provide insulation only
- C. Provide structural strength only
- D. Prevent moisture rising from the ground through capillary action
正解：D
質問 # 66
Photographic evidence in a dampness report should:
- A. Be purely decorative
- B. Show typical areas of damp, close-ups of specific defects, and reference photographs for context
- C. Never be included
- D. Only show perfect conditions
正解：B
質問 # 67
Black mould associated with condensation can be temporarily removed by:
- A. Leaving it untreated
- B. Ignoring it
- C. Cleaning with appropriate disinfectants; however, prevention through controlling condensation is more important
- D. Painting over it
正解：C
質問 # 68
Cavity wall insulation can trap moisture if:
- A. It is not installed correctly or if the cavity ventilation is blocked
- B. It is too thick
- C. It is installed during summer
- D. It is grey in colour
正解：A
質問 # 69
Replastering of walls after DPC installation must account for:
- A. No special considerations
- B. Only appearance
- C. Salt content reduction through drying/removal, use of compatible low-salt plaster, and appropriate finishes
- D. Only speed of application
正解：C
質問 # 70
A surveyor reports on penetrating damp in a cavity wall property. The report should include:
- A. Only moisture meter readings
- B. Only aesthetic observations
- C. Location of damp internally, corresponding external defects photographed, assessment of cavity integrity, insulation condition, and recommended repair prioritization
- D. Only recommendations without investigation details
正解：C
質問 # 71
A commercial property has severe rising damp but alternative treatments (electro-osmotic, capillary breaks) cannot be installed due to structural constraints. The surveyor's recommendation should include:
- A. Demolition of the building
- B. Only internal cosmetic treatments
- C. Accepting permanent damp
- D. Conventional chemical DPC installation as appropriate method, with realistic expectations regarding moisture reduction timescale
正解：D
質問 # 72
Professional reporting of a complex damp problem (multiple sources) should:
- A. Clearly identify all sources, provide evidence for each diagnosis, explain interactions, and recommend prioritized solutions
- B. Simplify to only one diagnosis
- C. Avoid technical detail
- D. Provide only recommendations without evidence
正解：A
質問 # 73
The survey report must communicate findings clearly to:
- A. No one; findings are confidential
- B. Building owners, occupants, and professionals who may not be surveyors
- C. Only building professionals
- D. Only moisture specialists
正解：B
質問 # 74
An electrical resistance moisture meter reading in masonry affected by rising damp will be:
- A. Unaffected by salts
- B. Always accurate
- C. Always accurate regardless of salt content
- D. Artificially lowered due to high salt content increasing conductivity
正解：D
質問 # 75
To diagnose condensation as opposed to rising or penetrating damp, the surveyor should observe:
- A. Moisture at all heights
- B. Surface condensation without salt deposits, appearing in cold corners and on windows
- C. Damp only after rainfall
- D. Tide marks at ground level
正解：B
質問 # 76
When a surveyor concludes that a property's damp problem is primarily caused by condensation resulting from occupant behavior (drying washing indoors, inadequate ventilation), the recommendation should:
- A. Ignore occupant factors
- B. Explain the technical cause, recommend occupant action changes, and suggest building improvements to reduce condensation risk
- C. Only blame occupants
- D. Recommend expensive structural works
正解：B
質問 # 77
Following chemical DPC installation at 150mm spacing using BS 6576 procedures, the surveyor must verify:
- A. Work commenced immediately after injection
- B. Chemical has circulated through wall and cure time allows for replastering; high-salt contamination addressed through drying/salt removal
- C. No replastering needed
- D. Moisture will decrease within days
正解：B
質問 # 78
Condensation typically appears as:
- A. Damp patches linked to external defects
- B. Tide marks with salt deposits
- C. Black mould on walls, ceilings, windows, and cold surfaces
- D. Brown staining on brickwork
正解：C
質問 # 79
A property shows damp with characteristic black mould appearing in winter only, no salt deposits, high relative humidity (70%+), and visible condensation on windows. The cause is most likely:
- A. Condensation from occupancy, inadequate ventilation, and poor heating
- B. Penetrating damp
- C. Structural failure
- D. Rising damp
正解：A
質問 # 80
The scope and limitations of the survey should be stated in the report because:
- A. It is not important
- B. It is optional
- C. Surveyors do not need to disclose limitations
- D. It clarifies what was and was not investigated, allowing clients to understand the basis of conclusions
正解：D
質問 # 81
BS 5250:2021 addresses condensation control through:
- A. Preventing occupancy
- B. Eliminating all moisture
- C. Adequate ventilation, thermal insulation, and moisture management to control relative humidity
- D. Using dehumidifiers only
正解：C
質問 # 82
A basement property shows seepage through walls below water table level. The surveyor must specify waterproofing per BS 8102:2022. Type A protection involves:
- A. Accepting water ingress
- B. Only internal treatment
- C. External drained cavity system allowing water to enter but collecting and draining it safely
- D. Sealed barrier membrane
正解：C
質問 # 83
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