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- Bushfire Protection Measures - Water Supply | BMO Reports
A requirement of the Bushfire Management Overlay is Water Supply, its one of four bushfire protection measures that need to be addressed in a BMO Report | Bushfire Design Consultants | Victoria Static Water Supply BMO Bushfire Protection Measures WHAT IS Static Water Supply When you are building in a Bushfire Management Overlay (BMO), your project may require a water tank, reserved solely for firefighting use in the event of a bushfire. The water supply is known as a "static water supply'. This is an above ground water tank that must remain full and reserved solely for the use of firefighting. The size of the water tank and its location is determined by the size of your land, and if required, the location of any fire hydrants available in the street. WHAT ARE THE REQUIREMENTS FOR Static Water Supply Water Supply Requirements (Table 4 of Clause 53.02-5) A static water supply of either 2,500 litres, 5,000 litres, or 10,000 litres. Be stored in an above ground water tank constructed of concrete or metal. Have all fixed above ground water pipes & fittings required for firefighting purposes made of corrosive resistant metal. Include a separate outlet for occupant use. Where a 10,000 litre water supply is required, the following must also be provided: The outlet/s of the water tank must be within 4 metres of the accessway and unobstructed. Be located within 60 metres of the outer edge of the approved building. Be readily identifiable from the building or appropriate identification signage to the satisfaction of the relevant fire authority. Incorporate a separate ball or gate valve (British Standard Pipe (BSP 65 millimetre) and coupling (64 millimetre CFA 3 thread per inch male fitting). Any pipework and fittings must be a minimum of 65 millimetres (excluding the CFA coupling). ADDITIONAL INFORMATION A larger water tank can be used to store the required firefighting water and household use water as long as the volume required for fire fighting is reserved at the bottom of the tank, by placing pipes for household use above the reserved fire fighting water line. Sometimes when a 10,000 litre static water supply and CFA emergency vehicle are required to get to within 4 metres of the the tank cannot be achieved, the use of a seperate CFA outlet can be used, these means you could have a tank located in the rear of the property, with an underground pipe from the tank to an up stand at the front of the property, this type of system is known as a 'CFA remote outlet'. WATER TANK SIZES AND SHAPES Water tanks can be purchased from any company as long as they meet your sites specific BMO requirements, most builders or building companies will have there own preferred supplier so it may not always be possible to get your own as its a requirement to get the building permit. Tanks can be any shape, round, slimline or other, and most come in a variety of 'height x length x width' configurations to suit your needs. If you require 2,500L or a 5,000L you won't need a CFA outlet on the tank, just a single outlet is needed for personal firefighting use. If you require 10,000L you will require the additional CFA outlet and a separate outlet for personal firefighting use. It's important that the amount of water you need, is above the level of the CFA outlet, in some cases you may need a slightly larger tank to ensure that the full amount of water needed can be accessed, best to confirm this with the tank manufacturer. Some examples of compliant tanks can be found here: 2,500L slimline 2,500L modline 5,000L round (1.9m wide) 5,000L slimline 5,000L 'skinny' slimline 5,000L 'ultra slim' modline 5,000L square 10,000L round (2.7m wide) 10,000L 'tall' round (2.3m wide) 10,000L 'tall' slimline S/S 10,000L 'squat' round (2.9m wide) S/S 10,000L "mid' round (2.55m wide) S/S 10,000 round (2.4m wide) S/S 10,000L 'tall' round (2.05m wide) Always refer to the requirements of your own Bushfire Management Plan (BMP) and ensure that your tank manufacture get this info to ensure its compliant. Bushfire Protection Measures Defendable Space Bushfire Construction Static Water Supply Access (driveway) Servicing all of Victoria Request A Quote
- BAL 19 | Bushfire Construction Reference Guide | AS3959:2018
BAL 19 - Section 6 of AS3959:2018 - Reference Guide | Australian Standards AS3959:2018 | Construction of Buildings in Bushfire Prone Areas Section 6 - AS 3959:2018 Construction Requirements for BAL 19 BAL 12.5 Sections 3 & 5 Ember attack radiant heat below 12.5kW/m2. BAL 19 Sections 3 & 6 Increasing ember attack and windborne debris, radiant heat between 12.5kW/m2 and 19kW/m2. BAL 29 Sections 3 & 7 Increasing ember attack and windborne debris, radiant heat between 19kW/m2 and 29kW/m2. BAL 40 Sections 3 & 8 Increasing ember attack and windborne debris, radiant heat between 29kW/m2 and 40kW/m2. Exposure to flames from a fire front likely. BAL FZ Sections 3 & 9 Direct exposure to flames, radiant heat and embers from the fire front. Section 6 - AS 3959:2018 BAL 19 Reference Guide Refer to Sections 3 & 6 for all BAL 19 Requirements This reference guide is not an exhaustive list of all of the requirements of AS3959:2018, and should be read in conjunction with Australian Standards AS3959:2018 (including Amendments 1 & 2 ), AS1530.8.1, AS1530.8.2 and official test reports and assessments. Link to 'Bushfire resisting timber ' BAL 19 General (Clause 6.1) A building assessed as being BAL 19 shall conform with Section 3 (General Construction Requirements) and Clauses 6.2 to 6.8 of AS3959:2018. Any element of construction or system that satisfies the test criteria of AS1530.8.1 may be used in lieu of the applicable requirements contained within Clauses 6.2 to 6.8 (see Clause 3.8). BAL 19 Subfloor Supports (Clause 6.2) - Unenclosed Subfloors. Supports (stumps, etc.) shall be (a) non-combustible, or (b) bushfire resisting timber, or (c) a timber species with a density of 750kg/m³ or greater. - Enclosed Subfloors. No requirements if the subfloor is enclosed with a cladding that conforms with the wall requirements (sarking not required behind subfloor cladding). BAL 19 Floors (Clause 6.3) - Unenclosed Subfloors. No requirements for bearers and joists with more than 400mm clearance above the ground, if closer than 400mm, bearers and joists shall be (a) non-combustible, or (b) bushfire resisting timber, and the flooring shall be (a) non-combustible, or (b) bushfire resisting timber, or (c) timber, particleboard or plywood with a sarking type material, or mineral wool insulation. - Enclosed Subfloors. No requirements if the subfloor is enclosed with a cladding that conforms with the wall requirements (sarking is not required behind the subfloor cladding). BAL 19 Walls (Clause 6.4) No requirements for wall cladding above 400mm from the ground, decks, carport roofs, awnings or similar. Any walls within 400mm from the ground, decks, carport roofs, awnings or similar, shall be (a) non-combustible (including brick, concrete, rammed earth and mud brick, etc. at min. thickness of 90mm), or (b) timber logs of a certain density, or (c) cladding that is (i) non-combustible, or (ii) min. 6mm thick cement sheet, or (iii) bushfire resisting timber, or (iv) a timber species with a density of 750kg/m³ or greater, or (v) steel sheeting. Any gaps greater than 2mm to be screened with 2mm mesh in corrosive resistant steel, bronze or aluminium. BAL 19 Windows, Sidelights & Doors (Clause 6.5) This section of AS3959:2018 includes multiple compliance paths and detailed variations. Always confirm exact requirements using the current version of AS3959. * Compliance options for BAL 19 windows and doors. (a) A system tested to conform with AS1530.8.1, or (b) Be completely protected by a bushfire shutter, or (c) Be completely protected externally by screens, or (d) Follow the 'Deemed To Satisfy' (DTS) provisions of AS3959:2018. (a) System Tested to AS1530.8.1. Window and door manufactures can have their products tested to comply with a BAL rating. Refer to window and door manufacturers for options. (b) Bushfire Shutters. Bushfire shutters can be used to protect windows and doors that are not: (a) completely screened, or (b) tested to AS1530.8.1, or (c) do not meet the DTS requirements. Where fitted, they must conform with Clause 3.7 and be made from (a) non-combustible material, or (b) bushfire resisting timber. (c) Completely Screened. External screens can be used to protect windows and doors that are not: (a) tested to AS1530.8.1, or (b) do not meet the DTS requirements. Where fitted, they must conform with Clause 3.6 and Clause 5.5.2. (d) Deemed To Satisfy (DTS). - DTS Frames. Window and door frames shall be (a) bushfire resisting timber, or (b) a timber species with a density of 650kg/m³ or greater, or (c) metal (inc. aluminium), or (d) metal reinforced uPVC. - DTS Glazing. For windows and sidelights, toughened glass with a min. thickness of 5mm for any low level glazing (within 400mm of the ground, decks, or roofs less than 18 degrees, etc.). For doors, toughened glass with a min. thickness of 5mm. * Understanding the term 'Screens' in AS3959:2018. The term, 'screen' in this section is used to describe three different applications: 1. Complete Screening . Screens need to be applied externally to cover the entire window or door assembly, including the frame, glazing, sash, sill and hardware. This gives maximum protection from embers and radiant heat. 2. Glazing Protection Screens . Only the glass area is protected by screens. These are fitted externally and reduce radiant heat exposure to glazing. T his could be done by fixing the screening to the window and/or door frame, or using an external insect/ ember screen door. 3. Insect/Ember Screens . These are required on openable windows and may be fitted internally or externally to prevent ember entry when the windows are open. These are required for openable windows at all Bushfire Attack Levels. Doors do not require these, but if fitted externally, need to comply with the screening material for each Bushfire Attack Level. * BAL 19 Screening Material. All screens must be made from mesh or perforated sheet (max. 2mm aperture) using: (a) corrosive resistant steel, or (b) bronze, or (c) aluminium. Refer to AS3959:2018 for frame requirements. BAL 19 Garage Doors (Clause 6.5.6) Garage doors shall be (a) non-combustible, or (b) bushfire resisting timber, or (c) a timber species with a density of 750kg/m³ or greater, and requires door seals to meet section 3 of AS3959:2018 BAL 19 Roofs (Clause 6.6) - General. Any roofing materials, systems or accessories shall be (a) non-combustible, and (b) sealed in accordance with AS3959:2018 Clause 3.6, and (c) any roof vents fitted with ember guards with 2mm mesh or perforated sheet in corrosive resistant steel, bronze or aluminium. - Fascias & Eaves (including alfresco ceilings). Fascias and eave gaps to be fitted with 2mm mesh or perforated sheet in corrosive resistant steel, bronze or aluminium. AS3959:2018 does not provide any construction requirements for fascias, bargeboards or eave linings (including alfresco ceilings) at BAL 19. - Tiled Roofs. Tiled roofs to be fully sarked and shall (a) be located on top of roof framing, except battens may be fixed above the sarking, and (b) cover the entire roof, inc ridges and hips, and (c) extend into gutters and valleys. - Sheet Roofs. Sheet roofs to be fully sarked and shall (a) be located on top of roof framing, except battens may be fixed above the sarking or foil backed insulation blankets may be installed over the battens, and (b) cover the entire roof, inc ridges and hips, and (c) extend into gutters and valleys, and (d) have any gaps sealed at the fascia or wall line, hips and ridges by (i) 2mm mesh or perforated sheet in corrosive resistant steel, bronze or aluminium, or (ii) mineral wool, or (iii) other non-combustible material. - Verandah & Carport Roofs. Verandah and carport roofs shall meet the roof requirements of the main roof, or be separated by an external wall conforming with the wall requirements and shall have non-combustible roof covering, except where the roof covering is translucent or transparent material. - Downpipes & Gutters. No requirements for downpipes or gutters. Box gutters shall be non-combustible, and flashed with non-combustible materials. - Gutter Guards. No requirement to install gutter or valley guards, but if they are fitted shall be non-combustible. - Skylights. Refer to AS 3959:2018 for requirements of skylight flashing and glazing. - Roof Penetrations. Refer to AS3959:2018 for requirements of roof penetrations such as skylights, evaporative coolers, vent pipes, aerials and support brackets, etc as there are many. BAL 19 Verandahs, Decks, Steps & Landings (Clause 6.7) - Verandah & Carport Posts. Verandah and carport posts shall be (a) mounted on galvanised brackets with a clearance of not less than 75mm above the adjacent finished ground level, or (b) if within 400mm from the ground or deck, etc to be (i) non-combustible, or (ii) bushfire resisting timber, or (iii) a timber species with a density of 750kg/m³ or greater. - Deck Supports & Framing. Decks have no requirements for supports or framing (except for posts for verandahs or carports). There are no requirements to enclose the sub floor of a deck, but if enclosed any material used to enclose a subfloor space within 400mm of the ground shall match the wall requirements. - Decking Boards, Stairs & Ramps. Decking boards, stair treads, landings and ramps have no requirements if they are further than 300mm from glazed elements (windows and doors) that are less than 400mm above that surface. Any decking boards, stair treads, landings or ramps within 300mm of glazed elements shall be (a) non-combustible, or (b) bushfire resisting timber, or (c) a timber species with a density of 750kg/m³ or greater. - Balustrades. Balustrades, handrails or other barriers have no requirements. BAL 19 Water & Gas Pipes (Clause 6.8) Above ground exposed water supply pipes shall be metal, external gas pipes and fittings above ground shall be of steel or copper with a min. wall thickness in accordance with gas regulations or 0.9mm, whichever is the greater and shall extend a min. of 400mm within the building and 100mm below ground. BUSHFIRE CONSTRUCTION Reference Guides General Section 3 Reference Guide BAL 29 Section 7 Reference Guide BAL 12.5 Section 5 Reference Guide BAL 40 Section 8 Reference Guide BAL 19 Section 6 Reference Guide BAL FZ Section 9 Reference Guide Servicing all of Victoria Request A Quote
- Bushfire Protection Measures - Access | BMO Reports
Accredited Bushfire Consultants | BMO Reports | Bushfire Management Statements & Bushfire Management Plans | Victoria | Bushfire Management Overlay | BPAD & FPA Access BMO Bushfire Protection Measures WHAT IS Access When you are building in a Bushfire Management Overlay (BMO), and your project requires a 10,000 litre water supply, it will also require 'Access' which means allowing emergency service vehicles (a CFA tanker for example) to be able to get within 4m of your water supply. To achieve this, minimum design and construction requirements apply to your driveway. These include the construction method, width, steepness, radius of any bends, and clearance to allow emergency vehicles safe access. It's not only your driveway that needs to comply, but any road to your property, such as gravel roads or tracks in rural areas, that also need to meet this requirement. WHAT ARE THE REQUIREMENTS FOR Access Access Requirements (Table 5 of Clause 53.02-5) Fire authority vehicles must be able to get within 4m of the water supply outlet. The following access/driveway design and construction requirements apply: All-weather construction. A load limit of at least 15 tonnes. Provide a minimum trafficable width of 3.5 metres. Be clear of encroachments for at least 0.5 metres on each side and at least 4 meters vertically. Curves must have a minimum inner radius of 10 metres. The average grade must be no more than 1 in 7 (14.4%) (8.1°) with a maximum grade of no more than 1 in 5 (20%) (11.3°) for no more than 50 meters. Dips must have no more than a 1 in 8 (12.5%) (7.1°) entry and exit angle. If the length of access/driveway is more than 100 metres, but less than 200 metres, these additional design and construction requirements apply: A turning area for fire fighting vehicles must be provide close to the building by one of the following: A turning circle with a minimum radius of 8 metres. A driveway encircling the dwelling. The provision of other vehicle turning heads such as a T or Y head - which meet the specification of Austroad Design for an 8.8 metre service vehicle. If the length of access/driveway is greater than 200 metres, this additional design and construction requirement applies: Passing bays are required at least every 200 metres and be a minimum 20 metres long and a minimum trafficable width of 6 metres. ADDITIONAL INFORMATION In a major fire event you should not rely upon CFA to assist. However in some circumstances firefighters may be available to provide support (CFA 2023). Access and egress to the road network is crucial to safety during an emergency event for both occupants and emergency services. Properties must provide safe passage for emergency vehicles. Access must comply with requirements Australian Design Rules for vehicles. Bushfire Protection Measures Defendable Space Bushfire Construction Static Water Supply Access (driveway) Servicing all of Victoria Request A Quote
- BAL FZ | Bushfire Construction Reference Guide | AS3959:2018
BAL FZ - Section 9 of AS3959:2018 - Reference Guide | Australian Standards AS3959:2018 | Construction of Buildings in Bushfire Prone Areas Section 9 - AS 3959:2018 Construction Requirements for BAL FZ (Flame Zone) BAL 12.5 Sections 3 & 5 Ember attack radiant heat below 12.5kW/m2. BAL 19 Sections 3 & 6 Increasing ember attack and windborne debris, radiant heat between 12.5kW/m2 and 19kW/m2. BAL 29 Sections 3 & 7 Increasing ember attack and windborne debris, radiant heat between 19kW/m2 and 29kW/m2. BAL 40 Sections 3 & 8 Increasing ember attack and windborne debris, radiant heat between 29kW/m2 and 40kW/m2. Exposure to flames from a fire front likely. BAL FZ Sections 3 & 9 Direct exposure to flames, radiant heat and embers from the fire front. Section 9 - AS 3959:2018 BAL FZ Reference Guide Refer to Sections 3 & 9 for all BAL FZ (Flame Zone) requirements This reference guide is not an exhaustive list of all of the requirements of AS3959:2018, and should be read in conjunction with Australian Standards AS3959:2018 (including Amendments 1 & 2), AS1530.8.1, AS1530.8.2 and official test reports and assessments. BAL FZ General (Clause 9.1) A building assessed as being BAL FZ shall conform with Section 3 (General Construction Requirements) and Clauses 9.2 to 9.8 and have a minimum setback distance of 10m from the edge of the classified vegetation. In circumstances where the 10m setback distance between the building and the edge of the classified vegetation cannot be achieved, those elements of the building that are less than 10m from the edge of the classified vegetation shall conform with AS1530.8.2. The details for roof systems specified in Appendix H are the result of testing to AS1530.8.2 and are deemed to satisfy solutions for the purpose of this Standard. Any element of construction or system that satisfies the test criteria of AS1530.8.2 may be used in lieu of the applicable requirements contained within Clauses 9.2 to 9.8 (see Clause 3.8). BAL FZ Subfloor Supports (Clause 9.2) - Unenclosed Subfloors. Supports (stumps, etc.) shall (a) have a FRL of at least 30/—/— and shall be non-combustible, or (b) be a system conforming with AS1530.8.2. - Enclosed Subfloors. No requirements if the subfloor is enclosed with a cladding that conforms with the wall requirements BAL FZ Floors (Clause 9.3) - Unenclosed Subfloors. Bearers, joists and flooring shall (a) have a FRL or at least 30/30/30 and the surface material shall be non-combustible, or (b) have the underside of the combustible elements of the floor system protected with a 30 min resistance to incipient spread of fire system, or (c) be a system conforming with AS1530.8.2 when tested form the underside. - Enclosed Subfloors. No requirements if the subfloor is enclosed with a cladding that conforms with the wall requirements. BAL FZ Walls (Clause 9.4) Walls shall be (a) non-combustible (including brick, concrete, rammed earth and mud brick at min. thickness of 90mm), or (b) a system conforming with AS 1530.8.2 when tested from the outside, or (c) a system with an FRL of 30/30/30 or —/30/30 when tested from outside. Any gaps greater than 2mm to be screened with 2mm mesh in corrosive resistant steel or bronze (no aluminium allowed). BAL FZ Windows, Sidelights & Doors (Clause 9.5) This section of AS3959:2018 includes multiple compliance paths and detailed variations. Always confirm exact requirements using the current version of AS3959. * Compliance options for BAL FZ windows and doors. (a) A system tested to conform with AS1530.8.2, or (b) Be completely protected by a bushfire shutter. (a) System Tested to AS1530.8.2. Window and door systems shall (a) have an FRL of —/30/—, or (b) be a tested system to AS1530.8.2 when tested from the outside. Window and door manufactures can have their products tested to comply witha BAL rating. Refer to window and door manufacturers for options. Note: Non-combustible frames are usually the only option for BAL FZ, however tested timber windows and doors are available from Paarhammer. (b) Bushfire Shutters. Bushfire shutters can be used to protect windows and doors that are not tested to AS1530.8.2. Where fitted, they must conform with Clause 3.7 and Clause 9.5.1, except that perforations are not acceptable over door systems. * Understanding the term 'Screens' in AS3959:2018. The term, 'screen' in this section is used to describe three different applications: 1. Complete Screening . Screens need to be applied externally to cover the entire window or door assembly, including the frame, glazing, sash, sill and hardware. This gives maximum protection from embers and radiant heat. 2. Glazing Protection Screens . Only the glass area is protected by screens. These are fitted externally and reduce radiant heat exposure to glazing. T his could be done by fixing the screening to the window and/or door frame, or using an external insect/ ember screen door. 3. Insect/Ember Screens . These are required on openable windows and may be fitted internally or externally to prevent ember entry when the windows are open. These are required for openable windows at all Bushfire Attack Levels. Doors do not require these, but if fitted externally, need to comply with the screening material for each Bushfire Attack Level. * BAL FZ Screening Material. All screens must be made from mesh or perforated sheet (max. 2mm aperture) using: (a) corrosive resistant steel, or (b) bronze. ( aluminium is not allowed) Refer to AS3959:2018 for frame requirements. BAL FZ Garage Doors (Clause 9.5.6) Garage doors shall be non-combustible and require door seals to meet section 3 of AS3959:2018. BAL FZ Roofs (Clause 9.6) - General. Any roofing materials, systems or accessories shall be (a) non-combustible, and (b) sealed in accordance with AS3959:2018 Clause 3.6, and (c) any roof vents fitted with ember guards with 2mm mesh or perforated sheet in corrosive resistant steel or bronze (no aluminium allowed). - Evaporative coolers. Evaporative coolers are not permitted. - Fascias & Eaves. Fascias & bargeboards shall conform with AS1530.8.2. Eave linings shall be (a) a system with a FRL or —/30/30, or (b) a system conforming with AS1530.8.2 - Tiled Roofs. To conform with Appendix. H of AS3959:2018 or a system tested to AS1530.8.2. - Sheet Roofs. To conform with Appendix. H of AS3959:2018 or a system tested to AS1530.8.2. - Verandah & Carport Roofs. Verandah and carport roofs shall meet the roof requirements of the main roof, or be separated by an external wall conforming with the wall requirements and shall have non-combustible roof covering, and the complete support structure shall be (a) non-combustible material, or (b) timber rafters lined on the underside with min. 6mm cement sheet or material conforming with AS1530.8.2, or (c) a system conforming to AS1530.8.2. - Downpipes & Gutters. No requirement for downpipes. Gutters shall be non-combustible. Box gutters shall be non-combustible, and flashed with non-combustible materials. - Gutter Guards. No requirement to install gutter or valley guards, but if they are fitted shall be non-combustible. - Skylights. Refer to AS3959:2018 for requirements of skylight flashing and glazing. - Roof Penetrations. Refer to AS3959:2018 for requirements of roof penetrations such as skylights, evaporative coolers, vent pipes, aerials and support brackets, etc as there are many. BAL FZ Verandahs, Decks, Steps & Landings (Clause 9.7) - Verandah & Carport Posts. Verandah and carport posts shall be non-combustible. - Unenclosed Deck Supports & Framing. Deck supports and framing shall be (a) non-combustible, or (b) a system conforming to AS1530.8.2. - Enclosed Deck Supports & Framing. If the subfloor is enclosed, it must be enclosed to match the wall requirements, and there are no requirements for the supports and framing. - Decking Boards, Stairs & Ramps. Decking boards, stair treads, landings and ramps shall be (a) non-combustible, or (b) cement sheet, or (c) a system conforming to AS1530.8.2. - Balustrades. Balustrades, handrails and other barriers within 125mm of any glazing or combustible wall, shall be non-combustible. BAL FZ Water & Gas Pipes (Clause 9.8) Above ground exposed water supply pipes shall be metal, external gas pipes and fittings above ground shall be of steel or copper with a min. wall thickness in accordance with gas regulations or 0.9mm, whichever is the greater and shall extend a min. of 400mm within the building and 100mm below ground. BUSHFIRE CONSTRUCTION Reference Guides General Section 3 Reference Guide BAL 29 Section 7 Reference Guide BAL 12.5 Section 5 Reference Guide BAL 40 Section 8 Reference Guide BAL 19 Section 6 Reference Guide BAL FZ Section 9 Reference Guide Servicing all of Victoria Request A Quote
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