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Comment: Migrated to Confluence 4.0

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Linear

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Orifice

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Flow

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Meter

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Variable

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Description

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Table:

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in

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order

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of

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appearance

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in

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code

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Variable

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Name

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Variable

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Description

Wiki Markup
{latex} $$ N_{Lfom} $$ {latex}

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Number 
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 of 
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 riser 
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pipes
 Wiki Markup
{latex} $$ K_{Rm} $$ {latex}
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minor 
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 loss 
...
 coefficient 
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 for 
...
 rapid 
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mix
 Wiki Markup
{latex} $$ A_{LfomOrificeTotal} $$ {latex}
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 Combined 
...
 area 
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 of 
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 all 
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orifices
 Wiki Markup
{latex} $$ A_{Orifice} $$ {latex}
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function 
...
 for 
...
 determining 
...
 the 
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 orifice 
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 areas 
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 as 
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 the 
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 vertical 
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 distance 
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 on 
...
 the 
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 riser 
...
 pipe 
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increases
 Wiki Markup
{latex} $$ HL_{Lfom} $$ {latex}
...
 headloss 
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 through 
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 the 
...
 Lfom, 
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 and 
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 the 
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 minimum 
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 height 
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 of 
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 the 
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 water 
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 in 
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 the 
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 entrance 
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tank
 Wiki Markup
{latex} $$ Pi_{VenaContractaOrifice} $$ {latex}
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minor 
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 loss 
...
 coefficient 
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 for 
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 an 
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 orifice 
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 (was 
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 K 
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 orifice)
...
 Wiki Markup
{latex} $$ Q_{Plant} $$ {latex}
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plant 
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 flow 
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rate
 Wiki Markup
{latex} $$ ID_{Lfom} $$ {latex}
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the 
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 inner 
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 diameter 
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 of 
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 the 
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 riser 
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pipe
 Wiki Markup
{latex} $$ Pi_{LfomOrificeArea} $$ {latex}
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ratio 
...
 of 
...
 LFOM 
...
 pipe 
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 area 
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 to 
...
 orifice 
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area
 Wiki Markup
{latex} $$ ND_{Lfom} $$ {latex}
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nominal 
...
 diameter 
...
 of 
...
 the 
...
 riser 
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 pipe 
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 and 
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 rapid 
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 mix 
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pipe
 Wiki Markup
{latex} $$ EN_{PipeSpec} $$ {latex}
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 enumerated 
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 type 
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 of 
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pipe
 Wiki Markup
{latex} $$ HL_{Rm} $$ {latex}
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 rapid 
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 mix 
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 head 
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loss
 Wiki Markup
{latex} $$ L_{RmPipe} $$ {latex}
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The 
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 total 
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 pipe 
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 length 
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 betweeen 
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 the 
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 bottom 
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 of 
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 the 
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 orifices 
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 and 
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 the 
...
flocculator
 Wiki Markup
{latex} $$ Nu_{Water} $$ {latex}
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viscosity 
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 of 
...
 water 
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 through 
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 the 
...
plant
 Wiki Markup
{latex} $$ E_{Pvc} $$ {latex}
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PVC 
...
 pipe 
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roughness
 Wiki Markup
{latex} $$ H_{Ramp} $$ {latex}
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 Function 
...
 based 
...
 off 
...
 of 
...
 ramp 
...
 functions, 
...
 this 
...
 is 
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 an 
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 incremental 
...
 function 
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 that 
...
 all 
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 ows 
...
 other 
...
 funtions 
...
 to 
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 evaluate 
...
 one 
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 level 
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 of 
...
 orifices 
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 at 
...
 a 
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time
 Wiki Markup
{latex} $$ B_{LfomOrifice} $$ {latex}
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vertical 
...
 distance 
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 between 
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orifices
 Wiki Markup
{latex} $$ Pi_{LfomH} $$ {latex}
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elevation 
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 between 
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 orifice 
...
 rows 
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 at 
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 which 
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 the 
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 flow 
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 is 
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 calibrated, 
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 a 
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 0 
...
 or 
...
 1 
...
 value. 
...
 0 
...
 corresponds 
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 to 
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 the 
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 current 
...
 row 
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 and 
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 1 
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 corresponds 
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 to 
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 the 
...
 next 
...
row
 Wiki Markup
{latex} $$ Q_{Ramp} $$ {latex}
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funtion 
...
 to 
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 determine 
...
 target 
...
 riser 
...
 pipe 
...
 flow, 
...
 incrementally 
...
 calculates 
...
flows
 Wiki Markup
{latex} $$ Q_{LfomActual} $$ {latex}
...
 funtion 
...
 to 
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 determine 
...
 actual 
...
 flow 
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 through 
...
orifices
 Wiki Markup
{latex} $$ n_{LfomOrifices} $$ {latex}
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 number 
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 of 
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orifices
 Wiki Markup
{latex} $$ D_{LfomOrifices} $$ {latex}
...
 diameter 
...
 of 
...
 Lfom 
...
orifices
 Wiki Markup
{latex} $$ D_{Circle} $$ {latex}
...
 function 
...
 that 
...
 determines 
...
 the 
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 diamter 
...
 of 
...
 a 
...
 circle 
...
 given 
...
 the 
...
area
 Wiki Markup
{latex} $$ D_{Drill} $$ {latex}
...
 function 
...
 that 
...
 determines 
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 the 
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 drill 
...
 bit 
...
 size 
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necessary
 Wiki Markup
{latex} $$ N_{LfomOrificesFirstrow} $$ {latex}
...
 arbitrary 
...
 value 
...
 determines 
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 the 
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 number 
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 of 
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 orifices 
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 in 
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 the 
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 first 
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 row, 
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 currently 
...
 5 
...
 is 
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selected
 Wiki Markup
{latex} $$ Q_{LfomError} $$ {latex}
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percent 
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 error 
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 in 
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 the 
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 actual 
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 flow 
...
 rate 
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 compared 
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 to 
...
 theoretical 
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values
 Wiki Markup
{latex} $$ Q_{LfomErrorMax} $$ {latex}
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maximum 
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 error 
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 of 
...
 Q_LfomError 
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array
 Wiki Markup
{latex} $$ HL_{EtFloc} $$ {latex}
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headloss 
...
 from 
...
 the 
...
 entrance 
...
 tank 
...
 to 
...
 the 
...
flocculator
 Wiki Markup
{latex} $$ ZW_{Et} $$ {latex}
...
 water 
...
 depth 
...
 of 
...
 entrance 
...
 tank 
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 relative 
...
 to 
...
 the 
...
 bottom 
...
 of 
...
 the 
...
 sedimation 
...
tank
 Wiki Markup
{latex} $$ HW_{FlocStart} $$ {latex}
...
 height 
...
 of 
...
 the 
...
 start 
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 of 
...
 the 
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 floculation 
...
 tank 
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 relative 
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 to 
...
 the 
...
 bottom 
...
 of 
...
 the 
...
 sedimention 
...
tank
 Wiki Markup
{latex} $$ H_{LfomFreefall} $$ {latex}
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difference 
...
 between 
...
 height 
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 of 
...
 water 
...
 in 
...
 floculation 
...
 tank 
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 and 
...
 the 
...
 bottom 
...
 set 
...
 of 
...
 orifices 
...
 on 
...
 the 
...
LFOM
 Wiki Markup
{latex} $$ HW_{Etmax} $$ {latex}
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maximum 
...
 water 
...
 level 
...
 in 
...
 entrance 
...
tank
 Wiki Markup
{latex} $$ HW_{Etmin} $$ {latex}
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minimum 
...
 water 
...
 level 
...
 in 
...
 entrance 
...
tank
 Wiki Markup
{latex} $$ H_{Et} $$ {latex}
...
height 
...
 of 
...
 entrance 
...
 tank 
...
walls
 Wiki Markup
{latex} $$ H_{PlantFreeBoard} $$ {latex}
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height 
...
 of 
...
 entrance 
...
 tank 
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 above 
...
 the 
...
 top 
...
 of 
...
 the 
...
 riser 
...
pipe
 Wiki Markup
{latex} $$ H_{LfomSF} $$ {latex}
...
 safety 
...
 factor 
...
 of 
...
 height 
...
 of 
...
 riser 
...
 pipe 
...
 above 
...
 top 
...
 row 
...
 of 
...
orifices
 Wiki Markup
{latex} $$ L_{Lfom} $$ {latex}
...
height 
...
 of 
...
 the 
...
 riser 
...
 pipe
...