NCC | |
---|---|
Australian Building Codes Board | |
| |
Territorial extent | Whole of Australia |
Enacted by | Australian Building Codes Board |
The National Construction Code (NCC) is a set of minimum requirements for buildings in Australia. The requirements concern the aspects of health, safety, accessibility, amenity and sustainability of the types of buildings that the code applies to. The Code is published by the Australian Building Codes Board (ABCB) in service to the Australian Federal Government as well as State and Territorial governments of Australia.
The NCC 2022 replaced the NCC 2019; it is revised every 3 years. [1] The NCC consists of 3 volumes. Volume One contains requirements for mostly commercial buildings, Volume Two contains requirements for mostly domestic buildings. These first two volumes together are known as the Building Code of Australia (BCA). Volume Three contains plumbing and drainage requirements for all types of buildings, it is also known as the Plumbing Code of Australia. [2]
The NCC is revised every three years by the Australian Building Codes Board (ABCB), and the changes that are implemented include those selected from proposals. [3] These proposals can be submitted by any person at any time. Once submitted they will be considered by involved committees and if it passes will be included in the public comment draft of the next years edition of the NCC. [4]
The NCC 2022 has increased the energy efficiency requirements, new houses will be required to achieve a higher degree of thermal performance. [5]
The NCC 2022 has more focus on creating fully electric buildings, buildings that don't use gas, and harnessing this electricity from renewable sources. [5] This includes a requirement that buildings be able to accommodate electric vehicle charging. [6]
The requirements for valley gutters have been increased to where there is a minimum of 15 millimetres (0.6 in) freeboard height, which is more than it was in NCC 2019. [7]
Establishing a building plans compliance with the NCC can be done through one of a few pathways. The most common of these is the "deemed to satisfy" pathway in which the aspects of a buildings plan are measured against the requirements for the various aspects of the design as written in the NCC. More complex and less commonly used is the "alternative solution" pathway; which is seen by some as more extensive and more difficult to achieve. [8]
The thermal comfort range that the ABCB recommends is a Predicted Mean Vote between +1 and -1, which is a level that would ensure that three quarters of the occupants of the given building across 95% of the floor area would feel comfortable thermally. [9]
Class | Description | ||
---|---|---|---|
1 | a | (i) | Single Dwelling that is Detached |
(ii) | Single Dwelling that is Attached (shares one or more walls with) other Single Dwellings (Semi-detached, Terraced house, Terraced houses in Australia) | ||
b | (i) | Any Class 1a building that is used as a Boarding house, Guest house, Hostel that does not accommodate more than 12 people and is not larger than 300 m2 (3,200 sq ft). | |
(ii) | When four or more dwellings are sitting on the same plot and used for short-term holiday stay. | ||
2 | (i) | The dwellings are stacked, such as Apartments. | |
(ii) | Class 1a(ii) building that has a collective/shared space underneath such as a shared carpark. | ||
3 | "a residential building providing long-term or transient accommodation for a number of unrelated persons" [11] | ||
(i) | Boarding house, guest house, hostel, lodging house. | ||
(ii) | Residential area that is a part of a hotel or motel. | ||
(iii) | Residential area that is part of a school. | ||
(iv) | Children, handicaped or elderly accommodation. | ||
(v) | Residential area for the staff of a hospital, nursing home or clinic. | ||
(vi) | Residential area of a detention centre. | ||
(vii) | Assisted living | ||
4 | A single residence within a larger building that is Class 5, 6, 7, 8 or 9. | ||
5 | Office buildings (Class 6 in NSW and SA) | ||
6 | Retail, Commercial | ||
(i) | Cafes, restaurants and bars. | ||
(ii) | Dining areas, bars, shops and stalls that are part of and located within a greater hotel or motel building. | ||
(iii) | Barbershop, laundromat, funeral home. | ||
(iv) | Showrooms, automobile repair shops, auctionhouse. | ||
7 | a | Parking lot, multistorey car park | |
b | Warehouse | ||
8 | (i) | Laboratory | |
(ii) | Factory, Workshop | ||
9 | a | Healthcare buildings such as, but not limited to, hospitals, where patients receive treatment. | |
b | Workshop, laboratory area within a school. | ||
c | Aged care | ||
10 | a | Structures such as a shed, personal garage or carports that are not intended for living in. | |
b | Any structures such as antennas, fences, free standing walls and swimming pools. | ||
c | A bushfire shelter associated with a Class 1a building. |
According to Geoff Hanmer, adjunct professor of architecture at the University of Adelaide, the regulations for ventilation are impotent. The code permits a building to be ventilated naturally though openable windows, but does not in any way guarantee that the windows will actually be opened to provide this ventilation; in the case of buildings like hospitals where there is a requirement that the building be mechanically ventilated, the NCC allows for the fresh air that is supplied into the patient rooms to recirculate via the corridors of the hospital [note 1] . He states that the NCC thus permits the construction a 1000-person occupancy building such as a nightclub, a school of 600 occupants and elderly care facilities of 300 occupants all with virtually no ventilation. [12]
The requirements the properties of reinforced concrete walls as specified in the standard AS 3600-2009, which are cited by at least NCC 2016 are not adequate in preventing collapse during very rare seismic events. The best practices for places with low to moderate seismicity, like Australia, are to have performance objectives in place that prevent collapse under the conditions of very rare seismic events. Hoult, Goldsworthy & Lumantarna (2019) specifically recommends that the Australian Building Codes Board revise the codes pertaining to this present in the NCC 2016 to prevent collapse in the event of a earthquake with 2500 year Return period. [13]
As of the NCC2019, it was more difficult and more expensive to make massive timber constructions due to the necessity to establish compliance with the NCC through "alternative solutions". As of the NCC2019, the compliance of massive timber constructions up to 25 m (82 ft) can be established through the "deemed to satisfy" pathway. [8]
The Committee on the Rights of Persons with Disabilities (CRPD) recommended to the NCC the implementation of mandatory accessibility requirements (for disabled access). The states of New South Wales, Western Australia, and South Australia have not followed the recommendations despite being bound by the CRPD. [14]
The state of South Australia (SA) has announced it will transition into the NCC 2022 in a unique and delayed way. (SA) will implement NCC 2022 on 1 May 2023. [1]
Plumbing is any system that conveys fluids for a wide range of applications. Plumbing uses pipes, valves, plumbing fixtures, tanks, and other apparatuses to convey fluids. Heating and cooling (HVAC), waste removal, and potable water delivery are among the most common uses for plumbing, but it is not limited to these applications. The word derives from the Latin for lead, plumbum, as the first effective pipes used in the Roman era were lead pipes.
Heating, ventilation, and air conditioning (HVAC) is the use of various technologies to control the temperature, humidity, and purity of the air in an enclosed space. Its goal is to provide thermal comfort and acceptable indoor air quality. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. "Refrigeration" is sometimes added to the field's abbreviation as HVAC&R or HVACR, or "ventilation" is dropped, as in HACR.
Ventilation is the intentional introduction of outdoor air into a space. Ventilation is mainly used to control indoor air quality by diluting and displacing indoor pollutants; it can also be used to control indoor temperature, humidity, and air motion to benefit thermal comfort, satisfaction with other aspects of the indoor environment, or other objectives.
A building code is a set of rules that specify the standards for construction objects such as buildings and non-building structures. Buildings must conform to the code to obtain planning permission, usually from a local council. The main purpose of building codes is to protect public health, safety and general welfare as they relate to the construction and occupancy of buildings and structures — for example, the building codes in many countries require engineers to consider the effects of soil liquefaction in the design of new buildings. The building code becomes law of a particular jurisdiction when formally enacted by the appropriate governmental or private authority.
The National Building Code of Canada is the model building code of Canada. It is issued by the National Research Council of Canada. As a model code, it has no legal status until it is adopted by a jurisdiction that regulates construction.
Green building refers to both a structure and the application of processes that are environmentally responsible and resource-efficient throughout a building's life-cycle: from planning to design, construction, operation, maintenance, renovation, and demolition. This requires close cooperation of the contractor, the architects, the engineers, and the client at all project stages. The Green Building practice expands and complements the classical building design concerns of economy, utility, durability, and comfort. Green building also refers to saving resources to the maximum extent, including energy saving, land saving, water saving, material saving, etc., during the whole life cycle of the building, protecting the environment and reducing pollution, providing people with healthy, comfortable and efficient use of space, and being in harmony with nature. Buildings that live in harmony; green building technology focuses on low consumption, high efficiency, economy, environmental protection, integration and optimization.’
A wheelchair ramp is an inclined plane installed in addition to or instead of stairs. Ramps permit wheelchair users, as well as people pushing strollers, carts, or other wheeled objects, to more easily access a building, or navigate between areas of different height. Ramps for accessibility may predate the wheelchair and are found in ancient Greece.
Building Science is the science and technology-driven collection of knowledge to provide better indoor environmental quality (IEQ), energy-efficient built environments, and occupant comfort and satisfaction. Building physics, architectural science, and applied physics are terms used for the knowledge domain that overlaps with building science. In building science, the methods used in natural and hard sciences are widely applied, which may include controlled and quasi-experiments, randomized control, physical measurements, remote sensing, and simulations. On the other hand, methods from social and soft sciences, such as case study, interviews & focus group, observational method, surveys, and experience sampling, are also widely used in building science to understand occupant satisfaction, comfort, and experiences by acquiring qualitative data. One of the recent trends in building science is a combination of the two different methods. For instance, it is widely known that occupants' thermal sensation and comfort may vary depending on their sex, age, emotion, experiences, etc. even in the same indoor environment. Despite the advancement in data extraction and collection technology in building science, objective measurements alone can hardly represent occupants' state of mind such as comfort and preference. Therefore, researchers are trying to measure both physical contexts and understand human responses to figure out complex interrelationships.
Building regulations in the United Kingdom are statutory instruments or statutory regulations that seek to ensure that the policies set out in the relevant legislation are carried out. Building regulations approval is required for most building work in the UK.
Passive cooling is a building design approach that focuses on heat gain control and heat dissipation in a building in order to improve the indoor thermal comfort with low or no energy consumption. This approach works either by preventing heat from entering the interior or by removing heat from the building.
Building insulation is material used in a building to reduce the flow of thermal energy. While the majority of insulation in buildings is for thermal purposes, the term also applies to acoustic insulation, fire insulation, and impact insulation. Often an insulation material will be chosen for its ability to perform several of these functions at once.
Passive ventilation is the process of supplying air to and removing air from an indoor space without using mechanical systems. It refers to the flow of external air to an indoor space as a result of pressure differences arising from natural forces.
Building officials of developed countries are generally the jurisdictional administrator of building and construction codes, engineering calculation supervision, permits, facilities management, and accepted construction procedures.
Council House 2 (also known as CH2), is an office building located at 240 Little Collins Street in the Melbourne central business district, Australia. It is used by the City of Melbourne council, and in April 2005, became the first purpose-built office building in Australia to achieve a maximum Six Green Star rating, certified by the Green Building Council of Australia. CH2 officially opened in August 2006.
Architectural engineering or architecture engineering, also known as building engineering, is a discipline that deals with the engineering and construction of buildings, such as environmental, structural, mechanical, electrical, computational, embeddable, and other research domains. It is related to Architecture, Mechatronics Engineering, Computer Engineering, Aerospace Engineering, and Civil Engineering, but distinguished from Interior Design and Architectural Design as an art and science of designing infrastructure through these various engineering disciplines, from which properly align with many related surrounding engineering advancements.
Air changes per hour, abbreviated ACPH or ACH, or air change rate is the number of times that the total air volume in a room or space is completely removed and replaced in an hour. If the air in the space is either uniform or perfectly mixed, air changes per hour is a measure of how many times the air within a defined space is replaced each hour. Perfectly mixed air refers to a theoretical condition where supply air is instantly and uniformly mixed with the air already present in a space, so that conditions such as age of air and concentration of pollutants are spatially uniform.
Green buildings in Australia are assessed and rated by a variety of government and independent ratings systems.
Sustainable refurbishment describes working on existing buildings to improve their environmental performance using sustainable methods and materials. A refurbishment or retrofit is defined as: "any work to a building over and above maintenance to change its capacity, function or performance' in other words, any intervention to adjust, reuse, or upgrade a building to suit new conditions or requirements". Refurbishment can be done to a part of a building, an entire building, or a campus. Sustainable refurbishment takes this a step further to modify the existing building to perform better in terms of its environmental impact and its occupants' environment.
The COVID-19 pandemic in Victoria was part of the worldwide pandemic of the coronavirus disease 2019 caused by severe acute respiratory syndrome coronavirus 2. The first confirmed case in the state of Victoria, also the first in Australia, was identified as being on 19 January 2020, when a man from Wuhan arrived by air from Guangdong, China. His test results on 25 January confirmed he had COVID-19.
The Australian Building Codes Board (ABCB) is a body that writes Australia's standardized building requirements, including the National Construction Code (NCC), WaterMark, and CodeMark. The ABCB is part of a joint endeavour by the Commonwealth, state and territory governments, and the country's plumbing and building industries.