Table 3'~~'rime required to contain a fire for two suppression tactics 

 and various fire shape factors. A/Vp is the ratio of suppression rate 

 to forward rate of spread; is the flanking rate of spread and Vg 

 is the backing rate; n is another shape parameter (see fig. l). 

 Entries in table are (A x containment time/initial perimeter), so are 

 numerically equal to the final pe r i me te r/ i n i t i a 1 perimeter 









T a f I r 



1 



J 



attack backing 



f i 





f i rst 



Tact i c 



2 : 



attack head 



f 





f i 



J L 









1 1 



1 



1 





r 





9 





1 



p 



= 









n — 



1 



\ 







n — 



9 

















w 



_i 

















































A/Vp 





v 



X'f 



0.5 



] . 



n 



u 







c 

 J 



1 



J • 







0. 



5 



1 



\ 













1 



J . 







n 



c 

 J 



1 



i < 



n 







5 



1 









n 



? 



L. 



1 n 1 



1 



1 . 



n 1 





n 1 





1 





1 



1 









1 

 J 



1 





n 1 



1 

 J 



n 1 





nn 





nn 







u 



1 n 1 



J . U 1 



1 



J . 



01 





01 



\\ 



01 





1 



I 



01 



1 



01 



1 



1 





01 



1 



01 





n 1 





n 1 



100 





6 



1 .01 



1 . 



01 



j • 



01 



J- 



0] 





01 



] 



01 



] 



01 



1 



01 



1 



01 



1 



01 



1 



01 



1 



.01 







8 



1 .02 



1 . 



n 1 





1 





1 



■ 



01 



1 



1 





1 



1 



01 





n 1 



1 



n 1 



\ 



01 





01 





1 







1 .02 



1 



0? 

 u c 





02 





02 





1 



] 



02 





1 





02 



1 



1 



\ 



02 





1 



] 



.02 







2 



1 1 3 



1 



1 7 





1 2 





12 





12 



] 



1 2 





.06 



] 



07 





O'^ 



\ 



0^ 





04 





.04 







h, 



1.14 



] 



14 





13 





13 



] 







13 



1 



08 



1 



09 





07 





08 





.06 





07 



10 





6 



1. 15 



1 



15 





14 





15 





14 



1 



14 





10 



1 



12 



1 



09 



1 



1 1 





08 



1 



. 1 1 







8 



1.17 



1 



1 LJ 





16 



J \j 



] 





1 . 



16 



1 

 J 



16 



] 



1 '\ 



1 



15 







1 



\ 



1 4 





1 1 





. 14 





] 







1 1 9 



1 



1 8 



^ ■ 



1 8 





1 8 





18 



1 



1 8 





1 c 

 ' ;3 



1 



1 



1 8 





1 c 



1 

 1 



1 8 



1 



1 4 



J 



. 1 8 







. 2 



1 30 



1 



30 





28 





28 





27 



1 



21 





1 3 



1 



14 





10 



1 



1 1 





08 





09 







.h, 



1 . 32 



1 



32 



l' 



30 



1 



30 





29 



1 



29 



1 



.17 



1 



19 



1 



14 



1 



17 





. 1 2 





. 16 



5 





.6 



1.35 



1 



35 



I ' 



33 



] 



33 



l' 



32 



1 



.32 





.22 



1 



26 





20 



1 



24 





.18 



1 



.23 







.8 



1 .39 



1 







^8 





^8 





36 



1 



■^7 







1 



33 





96 



1 

 1 







.24 





.32 





] 



. 



-i . -t J 



] 



4^ 



1 



43 





43 





42 



1 



1 



43 





36 



1 



43 





^4 



1 

 1 







32 





43 







. 2 



1.61 



1 



U 1 





/ 





c 7 





54 



1 



1 









1 



.26 





1 8 



1 

 1 



90 





. 14 





1 7 







. h, 



1 . 66 



1 



66 





61 



1 



62 





58 



1 



59 



1 



.32 



1 



36 



1 



.26 



1 



31 





. 22 





.28 



3 





.6 



1.74 



1 



72 



1 



69 





69 





65 



1 



66 





.42 



1 



.50 





.37 



1 



46 



1 



. 33 



1 



.44 







.8 



1.84 



1 



U 1 





79 





79 





76 



1 



78 

 / o 





qA 



1 

 1 



.69 







1 

 I 



67 



] 



.47 





.65 





1 



n 



2 . 00 



1 



9 ^ 





9 





9 c; 





92 



1 

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9^ 





7li 



1 

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9^^ 





69 



1 

 I 







66 



1 



9 ^ 







. 2 



1 8^ 



1 



8l 





/ D 





77 

 / / 







1 



73 





:2 1 

 . J5 1 





^■^ 





9 7 



1 



96 





1 7 





. 2 1 







. i, 



1 90 



] 



89 



1 



83 



] 



83 





78 



1 



.79 



1 



.41 



1 



. 46 



1 



.33 



1 



40 





.28 



1 



36 



2.5 





.6 



2.01 



1 



98 



] 



93 





93 



1 



88 



1 



.90 



] 



.55 



1 



^65 





.47 



1 



.60 



1 



.42 



1 



.57 







.8 



2.17 



2 



1 -J 



C 



1 



2 



1 



2 



05 



9 



c. 



07 





74 



1 

 1 



.93 





67 



1 



1 



9 





.62 



\ 



.88 





1 



. 



2 . 42 



2 



^4 



2 





2 



^4 



2 



30 



9 



L. 



. J • 





n 1 



9 



34 





9^; 



9 







90 





34 







. 2 



2.28 



2 



28 



2 



16 



2 



1 7 



2 



10 



9 



L. 



1 1 







1 



1 



45 







1 



1 



^4 





23 





27 







.k 



2 . 40 



2 



.38 



2 



27 



2 



28 



2 



19 



2 



.21 





.57 



1 



65 



J 



.45 



1 



.55 





37 





49 



2.0 





.6 



2.59 



2 



55 



2 



45 



2 



45 



2 



36 



2 



.39 





.78 



1 



.95 





.66 



1 



87 



1 



.58 





.81 







. 8 



2.91 



2 



82 



2 



76 



2 



76 



2 



66 



2 



.71 



2 



. 10 



2 



. 44 





.98 



2 



38 





.90 



2 



. 34 





1 



.0 



3. 42 



3 



27 



3 



28 



3 



27 



3 



18 



3 



.27 



2 



.61 



3 



27 





.48 



3 



27 





.40 



3 



.27 







.2 



3. 72 



3 



72 



3 



42 



■ — 

 3 



43 



3 



24 



3 



.26 



1 



.70 



1 



.74 





."48 



1 



54 





.35 



1 



.41 







.k 



4.04 



' 4 



3 1 



3 



68 



! 3 



.69 



3 



47 



3 



.50 



1 



.96 



2 



. 10 





.72 



1 



39 





• 58 



1 



.77 



1.5 





.6 



4.60 



4 



.48 



4 



18 



4 



.18 



3 



91 



3 



.98 



2 



.38 



2 



75 



2 



. 12 



2 



54 





.95 



2 



.40 







.8 



5.66 



5 



.40 



5 



16. 



■ 5 



. 16 



4 



82 



4 



.98 



3 



.15 



4 



.07 



2 



.84 



3 



88 



2 



.63 



3 



.74 





1 



.0 



7.93 



7 



.45 



7 



32 





.45 



6 



93 



7 



.45 



4 



• 77 



7 



.45 



4 



.38 



7 



45 



4 



.13 



7 



.45 



10 



