bushfire management statement

Bushfire Management Statement

PATHWAY 2 APPLICATION

Construction of a dwelling (including an extension or alteration to a dwelling)

☐ Dependant Persons Unit

☐ Industry

☐ Office

☐ Retail Premises

Property Address: Caledonian Hill Road Bolwarra

Applicant/Owner Name: I Bell

Date: 27/01/2016

Prepared by:Name: Bernie Wilder

Address: 9 Robins Ave Portland 3305

Telephone: 0419400333

Email: [email protected]

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Contents

Introduction....................................................................................................... 3

Application Details .............................................................................................. 4

Site Description.................................................................................................. 4

Bushfire Landscape Assessment ........................................................................... 6

Bushfire Hazard Assessment ................................................................................ 7

Bushfire Management Statement.......................................................................... 8

52.47-2 Bushfire Protection Objectives .......................................................... 8

Approved Measure AM 2.1 - Landscape............................................................ 8

Approved Measure AM 2.2 - Siting .................................................................. 8

Approved Measure 2.3 – Building Design.......................................................... 9

52.47-2.2 – Defendable Space and Construction Objective...................................10

Approved Measure AM 3.1 – Bushfire Construction and Defendable Space...........10

Alternative Measures.......................................................................................11

Alternative Measure AltM 3.3 – Defendable Space on adjoining land ...................11

Alternative Measure AltM 3.4 – Calculate defendable space using Method 2 ofAS3959-2009 ..............................................................................................11

Alternative Measure AltM 3.5 – Dwellings subject to direct flame contact ............11

Other unspecified Alternative Measures ..........................................................12

52.47-2.3 – Water Supply and Access Objectives ..................................................13

Approved Measure AM 4.1 – Water Supply and Access ........................................13

Water Supply Requirement.........................................................................13

Access Requirement ..................................................................................14

Attachment 1 – Bushfire Landscape Assessment....................................................17

Attachment 2 – Bushfire Site Hazard Plan.............................................................18

Attachment 3 – Site Photos.................................................................................20

Attachment 4 – Bushfire Management Plan ...........................................................22

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Introduction

This Bushfire Management Statement has been prepared in response to the requirementsof Clause 44.06-1 – Bushfire Management Overlay, and in accordance with theapplication requirements of Clause 52.47 – Planning for Bushfire.

The statement contains three components:

1. A bushfire hazard landscape assessment including a plan that describes thebushfire hazard of the general locality more than 150 metres from the site.Photographs or other techniques may be used to assist in describing the bushfirehazard.

2. A bushfire hazard site assessment including a plan that describes the bushfirehazard within 150 metres of the proposed development. The description of thehazard must be prepared in accordance with Section 2.2.3 to 2.2.5 ofAS3959:2009 Construction of buildings in bushfire prone areas (StandardsAustralia). Photographs or other techniques maybe used to assist in describingthe bushfire hazard.

3. A bushfire management statement describing how the proposeddevelopment responds to the requirements of Clause 44.06 and 52.47.

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Application Details

Municipality: Glenelg Shire

Title description: CA D Pt sec14 and pt CA E sec 14 Parish of Bolwarra Caledonian HillRoad Bolwarra

Overlays: Environmental Significance 2 Overlay control and a WildfireManagement Overlay.

Zoning: Rural Living and Rural Conservation 2 Zone

Site Description

Site shape: Rectangle

Site Dimensions: Refer Title

Site Area 22.8ha

Existing use andsiting of buildingsand works on andnear the land:

Vacant

Existing vehiclearrangements:

Entry to existing roads in place.

All weater access meeting CFA standards proposed forbuilding envelopes with subdivision.

Location of nearestfire hydrant: Narrawong and Tanks on site proposed

Any other featuresof the site relevantto bushfireconsiderations:

Site to be used in part for conservation purposes withTrust for Nature Covenant. Area around BuildingEnvelopes to be cleared of undergrowth to providedefendable space meeting relevant standards.

Refer to Attachment 1 for a scaled plan that shows the following:

150 metre assessment around the location of proposed buildings and aroundreasonable siting options for proposed buildings (if they are available)

Property boundaries Orientation Contours Classifiable vegetation within the assessment area Excludable vegetation within the assessment area Distance between the classifiable vegetation and the proposed buildings

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Slope under the classifiable vegetation (slope is based on the slope under theclassifiable vegetation and not the slope between the vegetation and the building

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Bushfire Landscape Assessment

Refer to pages 17 to 25 of Practice Note 65 for details to assist in developinga Bushfire Hazard Landscape Assessment.

Which landscape scenario represents the site? (Refer to Practice Note 65 for descriptions)

The landscape scenario that represents this is Landscape Scenario 1.

What is the likely fire behaviour impacting the site?

Protected in part by managed pasture or cultivated farmland surrounding. North windcommon on high fire hazard days. Fire services close by. It is submitted that the firedanger level is low because of the management proposed. .

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Bushfire Hazard Assessment

Classify the vegetation within 150 metres of the proposed development in accordancewith AS3959:2009 Construction of buildings in bushfire prone areas.

Direction (Aspect)

Northern Southern Eastern Western

Vegetation(within 150 metresof proposedbuilding / works)

Excludable / Low

Threat ☐Modified

Forest ☐Woodland

Scrub (tall) ☐Shrubland (short) ☐Mallee ☐Rainforest ☐Grassland ☐

Excludable / Low

Threat ☐Modified

Forest ☐Woodland


Excludable / Low

Threat ☐Modified

Forest ☐Woodland


Excludable / Low

Threat ☐Modified

Forest ☐Woodland


EffectiveSlope

(under theclassifiablevegetation within150 metres)

Upslope / Flat ☐DOWNSLOPE

>0 to 5 °

>5 to 10° ☐>10° to 15° ☐>15 to 20° ☐>20° ☐

Upslope / Flat

DOWNSLOPE

>0 to 5 ° ☐>5 to 10° ☐>10° to 15° ☐>15 to 20° ☐>20° ☐


>0 to 5 °

>5 to 10° ☐>10° to 15° ☐>15 to 20° ☐>20° ☐


>0 to 5 °

>5 to 10° ☐>10° to 15° ☐>15 to 20° ☐>20° ☐

Distance (m)to

ClassifiableVegetation

>150 43 >150 >150

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Bushfire Management Statement

52.47-2.1 Landscape, Siting and design objectives

Development is appropriate having regard to the nature of the bushfire risk arisingfrom the surrounding landscape.

Development is sited to minimise the risk from bushfire. Development is sited to provide safe access for vehicles, including emergency

vehicles. Building design minimises vulnerability to bushfire attack.

Approved Measure AM 2.1 - Landscape

Requirement

The bushfire risk to the development from the landscape beyond the site can bemitigated to an acceptable level.

The land surrounding comprises managed pasture and cultivated farmland.

Has Approved Measure AM 2.1 been met? Yes No ☐Approved Measure AM 2.2 - Siting

Requirement

A building is sited to ensure the site best achieves the following:

The maximum separation distance between the building and thebushfire hazard

43m defendable space proposed.

The building is in close proximity to a public road

yes

Access can be provided to the building for emergency service vehicles

Yes access to meet CFA standards

Any other comments

Nil

Has Approved Measure AM 2.2 been met? Yes No ☐

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Approved Measure 2.3 – Building Design

Requirement

A building is designed to reduce the accumulation of debris and entry of embers.

Yes BAL 19 proposed.


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52.47-2.2 – Defendable Space and Construction Objective

Defendable space and building construction mitigate the effect of flame contact,radiant heat and embers on the building.

Approved Measure AM 3.1 – Bushfire Construction and Defendable Space

Requirement:

A building provides the defendable space in accordance with Column A, B, C of Table 2to Clause 52.47-3 wholly within the title boundaries of the land.

The building will be provided with defendable space in accordance with BAL 19.

The defendable space distance required is 43 metres.

Are there significant siting constraints that would allow Column D of Table 2 to Clause52.47-3?

Yes ☐ No Not Applicable ☐None

A building is constructed to the bushfire attack level:

That corresponds to the defendable space provided in accordance with Table 1 toClause 52.47-3. The building will be constructed to BAL 19

Is the defendable space wholly contained within the boundaries of yourproperty?

Yes No ☐if no, see Alternative Measure 3.3

Any other comments

Nil


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Alternative Measures

Alternative Measure AltM 3.3 – Defendable Space on adjoining land

Requirement:

Adjoining land may be included as defendable space where there is reasonable assurancethat the land will remain or continue to be managed in that condition as part of thedefendable space.

Adjoining land managed pasture or cultivated land.

The building envelopes are to be cleared and the defendable space cleared per the fireplan.

Has Alternative Measure AltM 3.3 been met? Yes ☐ No ☐ N/A

Alternative Measure AltM 3.4 – Calculate defendable space using Method 2 ofAS3959-2009

Requirement:

Defendable space and the bushfire attack level is determined using Method 2 ofAS3959:2009 Construction of buildings in bushfire prone areas (Standards Australia)subject to any guidance published by the relevant fire authority.

Not Applicable


Alternative Measure AltM 3.5 – Dwellings subject to direct flame contact

Requirement:

A building used for a dwelling (including an extension or alteration to a dwelling) mayprovide defendable space to the property boundary where it can be demonstrated that:

The lot has access to urban, township or other areas where:o Protection can be provided from the impact of extreme bushfire behaviouro Fuel is managed in a minimum fuel conditiono There is sufficient distance or shielding to protect people from direct flame

contact or harmful levels of radiant heat Less defendable space and higher construction standard is appropriate having

regard to the bushfire hazard landscape assessment The dwelling is constructed to a bushfire attack level of BAL-FZ

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This alternative measure only applies where the requirements of Approved Measure 3.1cannot be met.

Not applicable


Other unspecified Alternative Measures

Nil

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52.47-2.3 – Water Supply and Access Objectives

A static water supply is provided to assist in protecting property. Vehicle access is designed and constructed to enhance safety in the event of a

bushfire.

Approved Measure AM 4.1 – Water Supply and Access

Water Supply Requirement

A building used for a dwelling (including an extension or alteration to a dwelling), adependant person’s unit, industry, office or retail premises is provided with a static watersupply for fire fighting and property protection purposes as specified in Table 4 to Clause52.47-3.

The water supply may be in the same tank as other water supplies provided that aseparate outlet is reserved for fire fighting water supplies.

Lot Size (m2) HydrantAvailable

Capacity(litres)

FireAuthorityFittings &

AccessRequired

SelectResponse

Less than 500 Not Applicable 2,500 No ☐500 – 1000 Yes 5,000 No ☐500 – 1000 No 10,000 Yes ☐1001 and above Not Applicable 10,000 Yes

Note: a hydrant is available if it is located within 120 metres of the rear of the building

Note: Fittings must be in accordance with the published requirements of the relevant fire authority

Confirm StaticWater Supplymeets thefollowingrequirements

Is stored in an above ground water tank constructed ofconcrete or metal

All fixed above ground water pipes and fittings for firefighting purposes must be made of corrosive resistantmetal.

The following additional requirements apply when 10,000litres of static water is required:

Incorporate a ball or gate valve (British Standard Pipe (BSP65mm) and coupling (64mm CFA 3 thread per inch malefitting)

The outlet/s of the water tank must by within 4 metres ofthe accessway and unobstructed

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Be readily identifiable from the building or appropriateidentification signage to the satisfaction of CFA must beprovided.

Any pipework and fittings must be a minimum of 65mm(excluding the CFA coupling)

Additional Information:

Not applicable

Has Approved Measure AM 4.1 (Water Supply)

been met? Yes No ☐Access Requirement

A building used for a dwelling (including an extension or alteration to a dwelling), adependant person’s unit, industry, office or retail premises is provided with vehicleaccess is designed and constructed as specified in Table 5 to Clause 52.47-3.

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Column A Column B

Length ofaccess is lessthan 30 metres

☐ There are no design and construction requirements if fireauthority access to water supply is not required under AM4.1

Length ofaccess is lessthan 30 metres

Where fire authority access to the water supply is requiredunder AM 4.1 fire authority vehicles must be able to getwithin 4 metres of the water supply outlet

Drive to meet CFA standards

Length ofaccess isgreater than 30metres

The following 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 eachside and at least 4 metres 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 1in 5 (20%)(11.3°) for no more than 50 metres

Length ofaccess isgreater than100 metres

A turning area for fire fighting vehicles must be provided close tothe building by one of the following:

A turning circle with a minimum radius of eight metres

A driveway encircling the dwelling

The provision of other vehicle turning heads such as a Thead or Y Head – which meet the specification of AustroadDesign for an 8.8 metre service vehicle.

Length ofaccess isgreater than200 metres

Passing bays must be provided at least every 200 metres.

Passing bays must be a minimum of 20 metres long with aminimum trafficable width of 6 metres.

Additional Information:

Not Applicable

Has Approved Measure AM 4.1 (Access)

been met? Yes No ☐

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Attachment 1 – Bushfire Landscape Assessment

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Attachment 2 – Bushfire Site Hazard Plan

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Attachment 3 – Site Photos

View from Caledonian Hill Road at Western Boundary

South West Walk

Area within Lot 2

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South West Walk within lot 1

South West Walk within lot 1

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Attachment 4 – Bushfire Management Plan

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Appendix

Clause 52.47-2.4 of the Glenelg Planning Scheme provides as follows:

Details for AM5.1 to AM 5.4

Assessment

Measure Comments

AM5.1 All relevant standards are to be met. Refer assessment earlier in thisdocument.

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AM5.2 All relevant standards are to be met. Refer assessment earlier in thisdocument and Bushfire Management Plan.

AM5.3 Not Applicable as only 3 lots.

AM5.4 All relevant standards are to be met. Refer assessment earlier in thisdocument and Bushfire Management Plan.

AM5.5 Not Applicable.

bushfire management statement

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