HKIA Exam Paper 4 Quiz 77

For synthetic finishing paints on internal and external woodwork, use aluminium primer
(General for Building 2017 Edition – Section 21 – Painting – Priming Paints in General – 21.02).

The joint between the base slab and the walls shall be minimum 250 mm above the top of the base slab (General for Building 2017 Edition – Section 6 – Structural Concrete Work – Watertight construction – 6.64).

A pile group reduction factor of 0.85 shall be applied to the calculated allowable load capacity of piles unless:
i. The centre-to-centre spacings are of more than 3 times the perimeter of the piles or the circumscribed rectangles in the case of H-piles
ii. The allowable load capacity of the piles is derived from end-bearing
iii. The piles are rock-socketed piles
iv. The piles are driven to refusal to rest on rock with final penetration not more than 1.0mm per blow (General for Building 2017 Edition – Section 5 – Piling Work – Pile Group Reduction Factor – 5.07).

Assume the entire cross-section has uniform temperature. For thermal design other than joint movement, the design winter surface temperature shall be 0ºC. The design summer surface temperature shall be at least 71ºC. The internal ambient temperature shall range from 15ºC to 25ºC (General for Building 2017 Edition – Section 16 – Curtain Walls – Criteria for Thermal movement – 16.45).

Stones in ashlar walling shall be laid on a full, even bed of mortar consisting of cement and fine crushed stone in proportions 1:3 by volume (General for Building 2017 Edition – Section 10 – Masonry – Laying and Jointing Ashlar Walling – 10.19).

Vibration caused by piling work shall not exceed the maximum peak particle velocity of ground movement of 7.5 mm/second and 15 mm/second for water retaining structures and water mains respectively, as measured with a vibroscope (General for Building 2017 Edition – Section 5 – Piling Work – Effect of Vibration on Adjacent Structures and Services – 5.24).

Provide concealed extruded aluminium stiffeners for blades, such that vector sum of blade deflections parallel to blade principal axes does not exceed 1/175 times span at design pressure (General for Building 2017 Edition – Section 16 – Curtain Walls – Louvres – 16.25).

When the temperature of the pretensioning steel is below 10 degrees centigrade at the time of tensioning, steel elongation computations shall allow for the increase in temperature of the steel between the time of tensioning and the time when the concrete takes its initial set (General for Building 2017 Edition – Section 7 – Prestressed Concrete Work – Temperature – 7.53).

Unless printed instructions state to the contrary, sealant shall not be applied when substrates are wet or when the temperature is below 4.5ºC (General for Building 2017 Edition – Section 16 – Curtain Walls – Application of Sealant and Gasket – 16.40).

Corrugated sheets shall be at least 0.6 mm thick with corrugations 76 mm wide and 19 mm deep (General for Building 2017 Edition – Section 12 – Roofing – Profiled Aluminium Sheets – 12.84).

Bedrock is defined as rock mass of at least 5 m thick (General for Building 2017 Edition – Section 5 – Piling Work – Large Diameter Bored Piles – 5.19).

Install sheet piles within the following tolerances:
i. Deviation from the correct line at ground level: Not exceeding 15 mm.
ii. Deviation from verticality of individual piles in any direction:
a. Generally: Less than 1:400.
b. For end piles in panels and for guide piles: Less than 1:500 (General for Building 2017 Edition – Section 4 – Steel Sheet Piling Work – Tolerance – 4.10).

Board type shall be moisture resistant grade (MDFMR) with density in excess of 600 kg/m3 (General for Building 2017 Edition – Section 13 – Carpentry and Joinery – Medium Density Fibreboard (MDF) – 13.17.1).

The strength properties of the sheeting material shall not be less than 110 kN/m2 in lap shear and 3.3 kN/m in lap peel under site conditions, unless otherwise approved by the SO (General for Building 2017 Edition – Section 6 – Structural Concrete Work – Watertight Construction – 6.64).

Hinges shall be countersunk drilled, fixed with matching screws and of the following types
For timber doors and frames: Jig drilled, with staggered drilling pattern and 12 screw gauge (SG) x 32mm wood screws (General for Building 2017 Edition – Section 14 – Ironmongery – 14.24).

Assume the entire cross-section has uniform temperature. For thermal design other than joint movement, the design winter surface temperature shall be 0ºC. The design summer surface temperature shall be at least 71ºC. The internal ambient temperature shall range from 15ºC to 25ºC (General for Building 2017 Edition – Section 16 – Curtain Walls – Criteria for Thermal movement – 16.45).

The energy reduction factor of the follower shall be taken as the ratio of energy imparted to the pile immediately after the introduction of follower to the energy imparted to the pile immediately before the introduction of follower (General for Building 2017 Edition – Section 5 – Piling Work – Energy Reduction Factor for Followers – 5.13).

Surface finishes shall be either:
i. Smooth finish: finish with a steel trowel or power float to a smooth surface, free from blemishes.
ii. Wood float finish: finish with a dry wood float to give an even overall surface.
iii. Textured finish: finish by stippling, scraping or other means to produce an approved textured surface.
iv. Rough cast finish: throw onto the undercoat a wet mix of aggregate and cementitious material.
v. Machine applied textured finish: apply in accordance with the manufacturer’s recommendations (General for Building 2017 Edition – Section 18 – Finishes – Surface Finishes – 18.18).

Dowels shall be 16 mm diameter galvanized steel rod 75 mm long (General for Building 2017 Edition – Section 14 – Ironmongery – Dowels for Fixing Door Frames – 14.107).

Underlays to concrete pavings and slabs on hardcore shall be:
i. Subsoil grade reinforced waterproof building paper to BS 1521, grade BIF
ii. 65 m to 80 µm polythene sheet (General for Building 2017 Edition – Section 6 – Structural Concrete Work – Underlays – 6.69).

Fabrication tolerances for exposed surface of individual pieces of stone shall be as follows:
a. Length and height (or width): 1.0 mm.
b. Depth of a saw cut: 2.0 mm.
c. Depth of a drilled hole: 3.0 mm.
d. Deviation from flat plane in 1200 mm, any direction: 2.0 mm.
e. Deviation from square: 2.0 mm difference in diagonals.
f. Deviation from nominal thickness: 2.0 mm.
g. Position of kerf cut relative to outdoor face: ±1.0 mm (General for Building 2017 Edition – Section 16 – Curtain Walls – Stone Fabrication – 16.45).

Uniform-graded material shall consist of material that has a coefficient of uniformity of 10 or less (General for Building 2017 Edition – Section 3 – Excavation and Earthwork – Definitions – 3.01).

Ties between walls and concrete shall be 20x3mm stainless steel 316 flats 350 mm long, fanged at both ends (General for Building 2017 Edition – Section 10 – Masonry – Wall Ties – 10.06).

Panel deviation from square or work size shall not exceed ±0.5 mm (General for Building 2017 Edition – Section 18 – Finishes – Dimensional Requirements – 18.166).

Total Settlement = d + D/120 + 4 mm
Where; d = PL/AE
D = Diameter of circular pile in mm, or
= The least lateral dimension of steel ‘H’ pile section in mm (for driven steel ‘H’ pile )
= Outer diameter of steel casing for Minipile, or
= Diagonal of rectangle enclosing H-section for RSSHP)
P = Test load
L = Nett length of pile (For piles with rock sockets, L shall be measured to the centre of the rock socket.)
A = Cross-sectional area of pile, or
= Transformed section comprising casing, grouting and rebars for Minipile, or
= Cross-sectional area of steel ‘H’ pile for RSSHP
E = Young’s modulus of pile given below (General for Building 2017 Edition – Section 5 – Piling Work – Loading Tests – 5.29).

Perform tests for the following properties:
a. Flexural strength per ASTM C880/C880M.
b. Stone strength at anchors as defined herein.
c. Water porosity as defined herein.
d. Density per ASTM C97/C97M
(General for Building 2017 Edition – Section 16 – Curtain Walls – Laboratory Tests of Stone – 16.77).

Cement/lime mortar cement, lime putty, and sand 1:1:6 for external walls and 1:2:9 for internal walls (General for Building 2017 Edition – Section 9 – Brickwork and Blockwork – Proportion – 9.22).

Provide underlay, where required, one of the following types to BS 5808 and BS EN 14499.
i. Felt
ii. Cellular
iii. Rubber crumb
iv. Composite underlay (General for Building 2017 Edition – Section 18 – Finishes – Underlay – 18.155).

Glass fibre membrane shall be a woven material with a thread count of 8 x 8 mm per 10 mm square (minimum) (General for Building 2017 Edition – Section 12 – Roofing – Glass Fibre Membrane – 12.26).

Water for grout shall be clean fresh water having a temperature not exceeding 30ºC nor less than 5ºC(General for Building 2017 Edition – Section 5 – Piling Work – Minipiles – 5.21).