Exam 1 Flashcards
(9 cards)
Give the TWO purposes of a wall cavity between a building frame and the external wall cladding.
To provide ventilation
To prevent external moisture being accumulated or transferred and causing condensation, fungal growth, or the degradation of building elements.
State FOUR factors that must be considered when a soaker flashing is being designed for a flue penetration through a corrugated metal roof.
Flue size.
Roof pitch.
Distance to ridge or bottom of sheet above?
Material compatibility
The ventilation for a plant room containing gas appliances is being designed. State THREE factors that must be considered in determining the location of the ventilation grilles.
If the ventilation can be direct to outside or not.
If a low level vent would be subject to flooding.
Do the vents need to be ducted
What are the wind conditions (vents need to be located away from strong winds)
Who is permitted to supply an endorsement for an imported gas appliance?
An Approved Practitioner (approved by WorkSafe)
Describe where the main run of the gas pipework should be located on a caravan
Outside the cabin attached to the side of the chassis
Give TWO important design requirements regarding pipe joints other than jointing method and pipe material, to consider when installing gas pipework in a boat.
Only run whole lengths and ensure all joints are easily accessible
Give TWO situations where commissioning a gas installation is required to be carried out
When work has been performed on an installation or appliance which may alter the performance or operation of an appliance.
When new appliances are installed
Give an example where gasfitting work in a caravan would not be classed as high risk.
A new installation in a caravan which is not intended for sleeping, including maintenance.
State what is required where pipework passes through a void that is adjacent to the living space of a motor home, according to AS/NZS 5601 Part 2.
Shall be sealed from the living space and shall be provided with a minimum 500mm² ventilation area adjacent to any joints and fittings to allow leaking gas to escape to atmosphere
