nswfrs planning for bush fire protection 2006 - appendix 2 attachment_20070301_0bb916b2

7/31/2019 NSWFRS Planning for Bush Fire Protection 2006 - Appendix 2 Attachment_20070301_0BB916B2

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1997, dp P, 1984). pp vb , v v p 20 y v ypy .

r v p v w z 1 h p pv p y w b x 50. t

w z aPZ bk b w b . t v p b v .

a , w p vy y p, v b y b b z, w xp w b -z. rp v w 20 w bk v,k b p p, .

Riparian areas Orchards (reduced vegetation)

Playgrounds (reduced vegetation) Woodland remnant

Examples o non-vegetated and reduced vegetation areas.

Recent experiences rom bush res inCentral Western NSW have demonstratedthat a signicant threat can existor developments in grassland areas.Construction requirements are notspecied in relation to grassland areasand these areas may not be mapped asbeing bush re prone. Grass res canthreaten the sub foor spaces o a buildingand may generate signicant embers.The RFS supports protection o the subfoor or the integration o 1.8 metrehigh protective (non combustible) encingin conjunction with screened windowsand a basic APZ o 10 metres or thesesituations. LEP provisions should addressrural properties at threat rom crop orgrass res including access, water andthe above as a requirement.

For the purposes o assessment, theollowing are not considered a hazardor as a predominant vegetation class/ormation and can be included within anasset protection zone:

(a) non-vegetated areas including roads,ootpaths, cycleways, waterways,buildings, rocky outcrops and thelike; and

(b) reduced vegetation including

maintained lawns, gol course airways,playgrounds or sports elds, vineyards,orchards, cultivated ornamentalgardens and commercial nurseries.

Appendices


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Central Western Grasslands

Dry sclerophyll orests (Open orest)

Semi-arid woodlands (Low woodlands)

Rainorests (Closed orest)

Examples o Vegetation Formations o NSW


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Table A2.1 Classifcation o Vegetation Formations (ater Keith, 2004)

Formation class

Rainorests

(Closed orest)

Wet sclerophyllorests (Tall open

orest)

Grassy woodlands(Woodlands)

Grasslands

Dry sclerophyllorests

(Open orest)

Heathlands

(Shrublands)

F (r)/F(t)*(t/ha)

8/10

25/30

20/25

10/15

6

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Keith (2004) Formations

Formation (Sub ormation) Description

c py p vy ,

zy- v. gy k yp. uyypy b. V p py y. o y by , y v y. typy p .

h p py by (ypy >30), -k yp p. lx y p v b, b. my y p p. y (>900) .

Shrubby sub ormationmy -v b y. e.

typy b-p b .

Grassy sub ormationw -v b w b v b f. rf b. e.typy p .

d by p p y yp (ypybx ) w w y ( 500. c, b w p.

Shrub/grass sub ormationcp p y. a v b p, x v -v p. i v b p.

Shrubby sub ormationuy by b w, bk,p fw, w, p-fw, , -,v , b wx fw. sp vp y -v . y xp .

sbby v. Pp p p bk, p

fw, w, , yp, -, pp bk,k, , . g . p . n .


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Formation class

Heathlands(Shrublands)

Alpine complex(Sedgelands)

Freshwaterwetlands

Forested wetlands

Saline wetlands

Semi-aridwoodlands (Low

woodlands)

Arid shrublands

F (r)/F(t)*(t/ha)

25

15

17

15

15/20

-

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9

9

Formation (Sub formation) Description

Tall Heaths (Scrub)htln t tn 2 t tll. inl hwkbysntn vttn wt tt vty t npnntly lty nty n tl t. my nl

ll lypt n tl ltn.

Short Heath (Open Shrub)htln l tn 2 t n t. otn pn n npy.

sttl nn by ll-lv b, b n tky. snl ny n nw tln. a lk t.

a pnntly tply nnt t by tnn nnn wt (wp). dnt by , b b.exl wtln nt by t n t wt nntqntt lt. ct, tblln, wtn lp n pln.

rtt t vn n fpln bjt t p

nntn. dnt by lypt, t-t n ppbk k. dtn by pn ypyt, wyplnt tt n lv n f nvnnt . , ,bttp, knt w, ln, n n . n nllylw ltt. sl vy pty n - l l tnl ly n ny l. ct, tblln, n nln.

dtn by n bnn lt. hlpyt bnnt. env wp, lt n w. ct(tl t) n wtn pln (lt lk).

Wly p t np, t 5-20 tll. dnn lpyll t (bx lypt, ll lypt, k,wttl n yp pn), t tnt b n

pl n b. rnll 250-500/y.Wtn pln.

Grassy sub formationo n fpln. unty pnntly y, ltnp b y b n n ll . cn btn y wln by t pln v n pnnt t n b, ll w vnln tbtn.

Shrubby sub formationo n lvt pln. st t


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(b) Eective Slope

a p v 100 x ppy by (bv) b p ( sPP) vp w v v z. i

p, y b vy p v . d

w z (v) ww y f bv

v v .

sp y b v pp p py 10 v. W b vy by vy, b b v .

t p w, v z:

() pp v ( 0)() >0 5

wp v

() >5 10 wp v(v) >10 15

wp v

(v) >15 18wp v

aPZ b appx pv pb w p p 18. ev p b wz x 18 w q p

r d P 1:1 --------------------- 45 100%

1:1.5 --------------------- 34 --------------------- 66%

1:2 --------------------- 26 --------------------- 50%

1:2.5 --------------------- 21 --------------------- 40%

1:3 --------------------- 18 --------------------- 33%

1:3.5 --------------------- 15 --------------------- 28%

1:4 --------------------- 14 --------------------- 25%1: 4.5 --------------------- 12 --------------------- 22%

1:5 --------------------- 11 --------------------- 20%

1: 5.5 --------------------- 10 --------------------- 18%

1: 6 --------------------- 9 --------------------- 16%

1: 6.5 --------------------- 9 --------------------- 15%

1: 7 --------------------- 8 --------------------- 14%

1: 7.5 --------------------- 8 --------------------- 13%

1: 8 --------------------- 7 --------------------- 12%

1: 8.5 --------------------- 7 --------------------- 11%

1: 9 --------------------- 6 --------------------- 11%

1: 10 --------------------- 6 --------------------- 10%

1: 11 --------------------- 5 --------------------- 9%

1: 12 --------------------- 5 --------------------- 8%

1: 13 --------------------- 4 --------------------- 8%

1: 14 --------------------- 4 --------------------- 7%1: 15 --------------------- 4 --------------------- 7%

1: 16 --------------------- 4 --------------------- 6%

1: 17 --------------------- 3 --------------------- 6%

1: 18 --------------------- 3 --------------------- 5.5%

1: 19 --------------------- 3 --------------------- 5%

1: 20 --------------------- 3 --------------------- 5%

SLOPE COMPARISIONS

Table A 2.2 Slope Comparisons

Managed asset protection zone

Not applicable for measurement of effective slope

Downslope

Flat

Upslope

Effective slope (degrees)

Measure slope under vegetation

Figure A2.3 Determining Eective Slope


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(c) Determining Appropriate Fire (Weather) Areas

bv ( v tb a2.3) w

vp b ppp p di. sPP () bw.

(d) Determining Appropriate Asset ProtectionZones (APZs)

c tb a2.4 a2.5 ( bv) pv v pppdi . These setbacks are based upon theneed to conorm to Level 3 (except grasslands)construction (AS 3959 1999) or a building oClass 1 or 2 under the BCA.

g 100 y by(bv) b (sPP) q q y w as3959 1999 b q aPZ 10 p


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Table A2.4 Minimum Specifcations or Asset Protection Zones (m) or Residential and Rural Residential SubdivisionPurposes (or Class 1 and 2 buildings) in FDI 100 Fire Areas (0-5 >5-10 >10-15 >15-18r 10 10 15 20 25 20 25 35 50 60W (gy) 10 15 20 25 30P (P) 20 25 30 45 50t h (sb) 15 15 20 20 20s h (op sb) 10 10 10 15 15w W 10 10 10 15 15 W 15 20 25 35 45

Table A2.5 Minimum Specifcations or Asset Protection Zones (m) or Residential and Rural Residential SubdivisionPurposes (or Class 1 and 2 buildings) in FDI 80 Fire Areas (0-5 >5-10 >10-15 >15-18r 10 10 15 15 20 20 20 30 40 45W 10 15 15 20 25P (P) 15 20 25 35 40t h (sb) 15 15 20 20 20s h (op sb) 10 10 10 15 15w W 10 10 10 15 15 W 15 20 20 30 35s-a (W) 10 10 10 10 15a sb 10 10 10 15 15

Table A2.6 Minimum Specifcations or Asset Protection Zones (m) or Special Fire Protection Purposes in bush freprone areas (0-5 >5-10 >10-15 >15-18r 30 40 50 60 65 60 70 85 100 100W (gy) 40 50 60 70 75P (P) 50 60 70 85 95t h (sb) 45 50 55 60 65s h (op sb) 35 35 40 45 45w W 35 35 40 45 45 W 50 60 75 90 95s-a (W) 30 35 40 45 50a sb 30 35 40 45 45ap r ( p 31 tb a3.5 p 66)

Table A2.7 Determining Allowable Outer Protection Areas (m) or orest vegetation within an APZ

Eective Slopes

Upslope/Flat >0-5 >5-10 >10-15 >15-18 di 100 - bv 10 10 15 25 30 di 80 - bv 10 5 15 20 20 sPP 20 20 25 30 25

n: V b K d. (2004) - p 54 - 55

For Forest Vegetation Formations, APZs can incorporate IPAs and OPAs (see page 50). OPAs to thedistances specifed in Table A2.7 are allowable subject to meeting the peromance requirements orthe OPAs. The balance o the APZ is to be managed as an IPA.

nswfrs planning for bush fire protection 2006 - appendix 2 attachment_20070301_0bb916b2

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