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The maintenance cycle of a building depends on the latter’s individual circumstances (e.g. the use, classification and condition), expectations of users and their affordability, with adjustments made in accordance with certain special conditions and expected standards. Nonetheless, the maintenance cycles of facilities or structures crucial to the safety or hygiene of residents and the public, or those whose inspection and testing are prescribed by law, e.g. external finishes, fire safety provisions, fire service installations and facilities, electrical and lift installations, etc., shall not be extended.

 

Maintenance Cycle for General Buildings (For Reference Only)

Facility

Repair Work

Life Cycle

External wall Paints

Repainting

4 to 5 years

External finishes

Periodic inspection

Every year

Thorough inspection

5 to 6 years

Structural elements

Periodic inspection

Every year

Thorough inspection

5 to 6 years

Structural overhaul

Whenever necessary

Interior partition walls

Refurbishment/repair

3 years

Structural overhaul

Whenever necessary

Fresh water supply system

Inspection and lubrication of water pumps and inspection of valves

Every month

Cleaning of water tanks and inspection of valves

3 months

Flushing water supply system

 

Inspection and lubrication of water pumps and inspection of valves

Every month

Cleaning of water tanks

6 months

Windows, external balustrades and metal parts

Inspection and reinstallation

Every year

Repainting (for steel and iron parts)

2 to 3 years

Rooftop drainage system

Inspection and cleaning of drainages and nullahs

Every 2 weeks or before and after typhoon/heavy rain

Surface inspection of aboveground sewage system for defects or overgrowth

Every year

Underground sewage system

 

Inspection and cleaning of manholes

2 months

Surveying of underground drainages through surveillance cameras

(e.g. when frequent movements or sedimentation of underground soil is forecast)

2 years

 

Lifts

Oiling and maintenance

Every month

Overhaul

Every year

Electrical installations (Fixed electrical installations whose load exceeds 100 amps)

Inspection, testing and certification by qualified electrical work contractors

At least once  every 5 years

Fire service installations

 

Inspection and reinstallation by managing personnel

Every week

Implementation of overhaul and reporting to the Fire Service Department

Every year

Inspection of fire doors

1 to 2 days

Service risers of gas supply

Inspection by qualified gas work contractors

 

At least once every 18 months

Recreational facilities

 

Inspection by managerial personnel

1 to 2 days

Inspection by mechanical technicians/professionals

Every year

Slopes and retaining walls

 

Inspection of aboveground drainages and protective coating by managerial personnel

At least once after the commencement of the monsoon season every year and after rainstorm or typhoon

Routine inspection and maintenance

 

At least once after the commencement of the monsoon season every year and after rainstorm or typhoon

Inspection by qualified geotechnical engineers

At least once every 5 years

Others

Alarms, public antenna systems and security systems, etc.

6 months to 1 year

Rooftops, floorings and finishes

Every year

Reference: Building Maintenance Guidebook by the Buildings Department.