What are the common wall purlins?
Both C-purlins and Z-purlins are used as wall purlins in Australia. Typical sizes used are: C10015, Z10015, C15015 and Z15015.
What is the difference between joists and purlins?
Purlins support roof structures but rafters support floors and ceilings. Joists transfer their load to walls, and purlins to rafters.
What are the typical rafter and purlin sizes in Australia?
Rafter and purlin sizes depend on load requirements. For purlins (mm): 203 x 79 x 1.9. For timber rafters (mm): 140 x 35.
What are the common roof purlin spacing in Australia?
Roof purlin spacing depends on the load requirements. In Australia, roof purlin spacing is typically between 400mm to 1200mm.
What is the thermal conductivity of electrical insulators?
Thermal conductivity of electrical insulators are between 0.1 to 3.0 W/mK. For example, plastic has a conductivity of between 0.1 - 0.5 W/mK
What insulation is used in a waffle slab construction?
Polystyrene insulation is used in a waffle slab construction having a thermal conductivity of between 0.03-0.04 W/mK.
What is a thermal break insulation?
Thermal breaks are thin insulating materials used to reduce thermal bridging in a wall, floor or a ceiling. Common thermal breaks are EPS strips, rubber or timber battens.
What is fiberglass insulation thermal conductivity?
For fiberglass insulation with a density of 7 kg/m3, it is 0.057 W/mK, and for a density of 12 kg/m3, it is 0.044 W/mK.
What is the best insulation between 140mm rafters?
The best insulation between 140mm rafters is R4.0 insulation, which is the equivalent of a 140mm Glasswool insulation with a density of 32 kg/m3.
What is the best insulation for 90mm stud walls?
The best insulation for 90mm stud walls is R2.7 insulation, [...]
What is the thermal conductivity of Glasswool batts?
Thermal conductivity of Glasswool batts depends on the density of the insulation. Here are some examples (in W/mK): 11 kg/m3: 0.046...
What are insulation thermal conductivity values?
Typical insulation thermal conductivity values (in W/mK) are: Cellulose fibre: 0.04, Fibreglass (7 kg/m3): 0.057...
What helps with understanding the NCC building classifications?
For the purpose of understanding the NCC building classifications, you can refer to NCC 2022 Vol 1.0, Part A6 and this article.
What is a Class 10b building?
A Class 10b building are structures like antenna, fence, retaining walls, swimming pools or the like.
What is an NCC class 10a building?
NCC Class 10a buildings are non-habitable, private buildings and often not accessible by public, like sheds, private garages and carports.
What type of building is considered a Class 9c building?
Class 9c building is an aged care building where at least 10% of the residents require special care for daily activities and evacuation.
Do we use magnetic north or true north for an energy assessment?
To define the project north, we use true north that can be double-checked on printed maps and google maps.
What buildings have a 9b building classification?
A Class 9b building classification refers to a building that is used for the gathering of people for social, civil or religious purposes.
What NCC building class is a hospital?
A hospital is a Class 9a building. However, it is important to know that not all medical centres are classified as Class 9a.
What is the NCC building classification of a farm building?
Depending on the occupancy, size and use of a farm building, it can be classified as a Class 7, 8 or 10a building.