HKIA Exam Paper 2 Quiz 37

All materials used in any building works or street works shall be
a. of a suitable nature and quality for the purposes for which they are used
b. adequately mixed or prepared and
c. applied, used or fixed so as to perform adequately the for which they are designed
(Building (Construction) Regulations (Cap. 123 sub. leg. B) – Part I – General – 3 – Materials)

Plain concrete means concrete in which no reinforcement is included for structural purposes but in which reinforcement may be provided for the purpose of restraining shrinkage or other movements (Building (Construction) Regulations (Cap. 123 sub. leg. B) – Part I – General – 2 – Interpretation)

Flue means a duct through which smoke or other products of combustion or fumes from any cooking apparatus or stove or oven, or vitiated air, pass or are intended to pass for the purpose of reaching the open air
(Building (Construction) Regulations (Cap. 123 sub. leg. B) – Part I – General – 2 – Interpretation)

Carriageway means that part of a private street, cul-de-sac or access road used or intended to be used by vehicular traffic
(Building (Construction) Regulations (Cap. 123 sub. leg. B) – Part I – General – 2 – Interpretation)

The maximum free water/cement ratio shall be 0.7
(General Specification for Building 2017 Edition – Section 8 – Concrete for Minor and Non-Structural Work – Mixes – 8.09)

Every refuse chute shall be provided at the top thereof with a ventilating pipe, such ventilating pipe shall have an internal area of not less than 0.05 m2
(Building (Refuse Storage and Material Recovery Chambers and Refuse Chutes) Regulations (Cap. 123 sub. leg. H) – 19)

Every refuse storage and material recovery chamber shall be provided with a close-fitting steel door, such door shall
a. be situated in an external wall of the refuse storage and material recovery chamber
b. have a height of not less than 1.8 m
c. have a width of not less than 1.25 m (Building (Refuse Storage and Material Recovery Chambers and Refuse Chutes) Regulations (Cap. 123 sub. leg. H) – 10).

The approved types of piles that may be adopted by the Contractor unless otherwise specified are:
a. Precast concrete piles.
b. Precast prestressed tubular piles.
c. Percussion cast in-situ concrete piles.
d. Steel ‘H’ piles.
e. Non-percussion cast in-situ concrete piles.
f. Large diameter bored piles.
g. Minipiles.
h. Rock-socketed Steel H-piles (RSSHP).
i. Barrette piles.
j. Any other piling systems approved by the Development Bureau
(General Specification for Building 2017 Edition – Section 5 – Piling Work – General – 5.01).

Bends or offset in any refuse chute prohibited where any refuse chute has an offset at the foot thereof, such offset shall have a slope of not less than 60 degrees to the horizontal (Building (Refuse Storage and Material Recovery Chambers and Refuse Chutes) Regulations (Cap. 123 sub. leg. H) – 14).

Pile means a columnar foundation element which is
a. pre-manufactured and inserted into the ground by driving, jacking or other methods; or
b. cast-in-place in a shaft formed in the ground by boring, excavating or inserting a shell
(Building (Construction) Regulations (Cap. 123 sub. leg. B) – Part I – General – 2 – Interpretation).

All external walls and roofs of a building should be included in Overall Thermal Transfer Value (OTTV) calculations except;
a. an external wall of a refuge floor
b. an external wall or roof of a car parking floor
c. an external wall of a lightwell having an area on plan not exceeding 21m2
d. any wall on any roof (Code of Practice for Overall Thermal Transfer Value in Buildings 1995 – 4 – Principles of Overall Thermal Transfer Value (OTTV) Calculations – External Walls and Roofs not included in Overall Thermal Transfer Value (OTTV) Calculations – 4.1).

The total sulphate content, expressed as SO3, of the suitable material placed within 500 mm of metalwork shall not exceed 0.5% by mass (General Specification for Building 2017 Edition – Section 3 – Excavation and Earthwork – General – 3.01).

Overall thermal transfer value means as regards a building, the amount, expressed in watts per square metre (W/m2), of heat transferred through that building envelope and calculated having regard to factors such as the area of the building envelope, the material used in its construction, thermal properties of the material, orientation of the building, the area of the openings in the building envelope and the shading effect of projections from the building envelope; (Building (Energy Efficiency) Regulation (Cap. 123 sub. leg. M) – 2 – Interpretation).

All pipes used in the construction of any drain or sewer shall
a. be of true bore
b. have smooth internal surfaces
c. be impervious (Buildings (Standards of Sanitary Fitments, Plumbing, Drainage Works and Latrines) Regulations (Cap. 123 sub. leg. I) – Part IV – Drainage Works – 44).

Consequently, when determining the size and location of windows as well as choice of glass in the envelope of a building, efforts should be made to provide as much natural lighting into the building as possible (Code of Practice for Overall Thermal Transfer Value in Buildings 1995 – General Principles of Control of Overall Thermal Transfer Value – 1.4).

The walls of every refuse chute shall be constructed of solid brick or concrete, and shall be not less than 100 mm thick, exclusive of any lining (Building (Refuse Storage and Material Recovery Chambers and Refuse Chutes) Regulations (Cap. 123 sub. leg. H) – 17).

No domestic building shall be erected against a retaining wall which exceeds 4.5 m in height
(Building (Planning) Regulations (Cap. 123 sub. leg. F) – Part VI – Domestic Buildings – 47 – Building abutting on Retaining Wall).

The height measured to the ceiling of every refuse storage and material recovery chamber shall throughout the chamber be not less than 2m. (Building (Refuse Storage and Material Recovery Chambers and Refuse Chutes) Regulations (Cap. 123 sub. leg. H) – 8).

The approved types of piles that may be adopted by the Contractor unless otherwise specified are:
a. Precast concrete piles.
b. Precast prestressed tubular piles.
c. Percussion cast in-situ concrete piles.
d. Steel ‘H’ piles.
e. Non-percussion cast in-situ concrete piles.
f. Large diameter bored piles.
g. Minipiles.
h. Rock-socketed Steel H-piles (RSSHP).
i. Barrette piles.
j. Any other piling systems approved by the Development Bureau (General Specification for Building 2017 Edition – Section 5 – Piling Work – General – 5.01).

Save as provided in paragraphs (2) and (3) waste pipes shall discharge in the open air
a. over or into a suitable channel within 1 m of a properly trapped gully
b. into a gully, above the level of the water therein; or
c. into a suitable hopper head (Buildings (Standards of Sanitary Fitments, Plumbing, Drainage Works and Latrines) Regulations (Cap. 123 sub. leg. I) – Part III – Plumbing – 12).

Travel distance means the horizontal distance measured on the floor along the centreline of the exit route between the furthest point (most remote point) on a storey or within a fire compartment to:
a. the centre of the fire rated door to a protected exit or a required staircase, as the case may be
b. if there is no such door, the first tread of the required staircase
c. if the exit route leads directly to an ultimate place of safety, any one of the discharge points to the ultimate place of safety (Code of Practice for Fire Safety in Buildings 2011 – Part A – Introduction – Section 3 – Definitions).

In the Overall Thermal Transfer Value (OTTV) formulation, the following factors are not addressed or allowed;
a. Internal shading devices, such as draperies and blinds
b. Solar reflection or Shading from adjacent buildings (Code of Practice for Overall Thermal Transfer Value in Buildings 1995 – General Principles of Control of Overall Thermal Transfer Value – 1.7).

The floor of every refuse storage and material recovery chamber shall be
a. constructed of concrete not less than 100 mm thick
b. laid to fall towards the gully provided in accordance with regulation 11
c. finished with quarry tiles or other approved hard impervious material
(Building (Refuse Storage and Material Recovery Chambers and Refuse Chutes) Regulations (Cap. 123 sub. leg. H) – 9).

Every water closet fitment, other than a squatting type fitment, shall be provided with a hinged seat or a suitable seat rim or inset (Buildings (Standards of Sanitary Fitments, Plumbing, Drainage Works and Latrines) Regulations (Cap. 123 sub. leg. I) – Part III – Plumbing – 14).

For Use Classification 8, the net floor area should be used in applying the occupancy factor. If the net floor area of a room does not exceed 100m2, the occupant capacity is considered to be zero.
(Code of Practice for Fire Safety in Buildings 2011 – Part B – Means of Escape – Section 2 – Provisions of Means of Escape – Subsection B4 – Assessment of Occupant Capacity – Clause B4.1 – Notes).

Hatch box means a chamber of such a size and form as readily allows inspection and testing of the drain or sewer on which it is constructed and the clearance of obstructions from the drain or sewer (Buildings (Standards of Sanitary Fitments, Plumbing, Drainage Works and Latrines) Regulations (Cap. 123 sub. leg. I) – Part IV – Drainage Works – 47A).

The main staircase of every building which exceeds 1 storey in height shall have a clear width of not less than 900mm (Building (Planning) Regulations (Cap. 123 sub. leg. F) – Part V – Staircases, Fire Escapes and Access for Firefighting and Rescue Purposes – 39 – Staircases).

Every refuse chute shall be provided at the top thereof with a ventilating pipe, such ventilating pipe shall
a. have an internal area of not less than 0.05 m2
b. be carried up from the top of the refuse chute to a height, above the roof of the building, of not less than 1 m (Building (Refuse Storage and Material Recovery Chambers and Refuse Chutes) Regulations (Cap. 123 sub. leg. H) – 19)

Admixture shall be approved by the SO and shall contain no chloride, nitrate, sulphate, or aluminium powder (General Specification for Building 2017 Edition – Section 7 – Prestressed Concrete Work – Material – 7.05).

Flushing cistern shall in the case of water closet fitments and slop sinks discharge to the water closet fitment of slop sink, on each occasion such fitment is used, not less than 9 litres and not more than 14 litres of water (Buildings (Standards of Sanitary Fitments, Plumbing, Drainage Works and Latrines) Regulations (Cap. 123 sub. leg. I) – Part III – Plumbing – 19).