20/01/ of 8 TOW SSD v3. C 2.78AC Σ Cumul. A*C. Tc 1 =A14+1 =B14+1 =C14+1 =D14+1 =E14+1 =F14+1 =G14+1 =H14+1 =I14+1 =J14+1 =K14+1

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1 20/01/ of 8 TOW SSD v3 Location Project a =IF(Design_Storm>0,VL b =IF(Design_Storm>0,VL c =IF(Design_Storm>0,VL Designed By Checked By Date Date Comment Min Tc 15 LOCATION From To MH or CBMH STA. MH or STA. A (ha) Σ A (ha) Total DRAINAGE AREA C 2.78AC Σ Cumul. A*C no. CBMH no. 2.78AC Tc 1 =A14+1 =B14+1 =C14+1 =D14+1 =E14+1 =F14+1 =G14+1 =H14+1 =I14+1 =J14+1 =K14+1 Σ Cumul. i (mm/h) RUNOFF Controlled Q (L/s) =2.78*E15*G15 =SUMIF(Dn_MH,A15,Cum =IF(I15>0,maxif(Dn_MH=IF(I15>0,a/(J15+b)^c_, =SUMIF(Dn_MH,A15,Con =SUMIF(Dn_MH,A16,SSD_ =2.78*E16*G16 =SUMIF(Dn_MH,A16,Cum =IF(I16>0,maxif(Dn_MH=IF(I16>0,a/(J16+b)^c_, =SUMIF(Dn_MH,A16,Con =SUMIF(Dn_MH,A17,SSD_ =2.78*E17*G17 =SUMIF(Dn_MH,A17,Cum =IF(I17>0,maxif(Dn_MH=IF(I17>0,a/(J17+b)^c_, =SUMIF(Dn_MH,A17,Con =SUMIF(Dn_MH,A18,SSD_ =2.78*E18*G18 =SUMIF(Dn_MH,A18,Cum =IF(I18>0,maxif(Dn_MH=IF(I18>0,a/(J18+b)^c_, =SUMIF(Dn_MH,A18,Con =SUMIF(Dn_MH,A19,SSD_ =2.78*E19*G19 =SUMIF(Dn_MH,A19,Cum =IF(I19>0,maxif(Dn_MH=IF(I19>0,a/(J19+b)^c_, =SUMIF(Dn_MH,A19,Con =SUMIF(Dn_MH,A20,SSD_ =2.78*E20*G20 =SUMIF(Dn_MH,A20,Cum =IF(I20>0,maxif(Dn_MH=IF(I20>0,a/(J20+b)^c_, =SUMIF(Dn_MH,A20,Con =SUMIF(Dn_MH,A21,SSD_ =2.78*E21*G21 =SUMIF(Dn_MH,A21,Cum =IF(I21>0,maxif(Dn_MH=IF(I21>0,a/(J21+b)^c_, =SUMIF(Dn_MH,A21,Con =SUMIF(Dn_MH,A22,SSD_ =2.78*E22*G22 =SUMIF(Dn_MH,A22,Cum =IF(I22>0,maxif(Dn_MH=IF(I22>0,a/(J22+b)^c_, =SUMIF(Dn_MH,A22,Con =SUMIF(Dn_MH,A23,SSD_ =2.78*E23*G23 =SUMIF(Dn_MH,A23,Cum =IF(I23>0,maxif(Dn_MH=IF(I23>0,a/(J23+b)^c_, =SUMIF(Dn_MH,A23,Con =SUMIF(Dn_MH,A24,SSD_ =2.78*E24*G24 =SUMIF(Dn_MH,A24,Cum =IF(I24>0,maxif(Dn_MH=IF(I24>0,a/(J24+b)^c_, =SUMIF(Dn_MH,A24,Con =SUMIF(Dn_MH,A25,SSD_ =2.78*E25*G25 =SUMIF(Dn_MH,A25,Cum =IF(I25>0,maxif(Dn_MH=IF(I25>0,a/(J25+b)^c_, =SUMIF(Dn_MH,A25,Con =SUMIF(Dn_MH,A26,SSD_ =2.78*E26*G26 =SUMIF(Dn_MH,A26,Cum =IF(I26>0,maxif(Dn_MH=IF(I26>0,a/(J26+b)^c_, =SUMIF(Dn_MH,A26,Con =SUMIF(Dn_MH,A27,SSD_ =2.78*E27*G27 =SUMIF(Dn_MH,A27,Cum =IF(I27>0,maxif(Dn_MH=IF(I27>0,a/(J27+b)^c_, =SUMIF(Dn_MH,A27,Con =SUMIF(Dn_MH,A28,SSD_ =2.78*E28*G28 =SUMIF(Dn_MH,A28,Cum =IF(I28>0,maxif(Dn_MH=IF(I28>0,a/(J28+b)^c_, =SUMIF(Dn_MH,A28,Con =SUMIF(Dn_MH,A29,SSD_ =2.78*E29*G29 =SUMIF(Dn_MH,A29,Cum =IF(I29>0,maxif(Dn_MH=IF(I29>0,a/(J29+b)^c_, =SUMIF(Dn_MH,A29,Con =SUMIF(Dn_MH,A30,SSD_ =2.78*E30*G30 =SUMIF(Dn_MH,A30,Cum =IF(I30>0,maxif(Dn_MH=IF(I30>0,a/(J30+b)^c_, =SUMIF(Dn_MH,A30,Con =SUMIF(Dn_MH,A31,SSD_ =2.78*E31*G31 =SUMIF(Dn_MH,A31,Cum =IF(I31>0,maxif(Dn_MH=IF(I31>0,a/(J31+b)^c_, =SUMIF(Dn_MH,A31,Con =SUMIF(Dn_MH,A32,SSD_ =2.78*E32*G32 =SUMIF(Dn_MH,A32,Cum =IF(I32>0,maxif(Dn_MH=IF(I32>0,a/(J32+b)^c_, =SUMIF(Dn_MH,A32,Con =SUMIF(Dn_MH,A33,SSD_ =2.78*E33*G33 =SUMIF(Dn_MH,A33,Cum =IF(I33>0,maxif(Dn_MH=IF(I33>0,a/(J33+b)^c_, =SUMIF(Dn_MH,A33,Con =SUMIF(Dn_MH,A34,SSD_ =2.78*E34*G34 =SUMIF(Dn_MH,A34,Cum =IF(I34>0,maxif(Dn_MH=IF(I34>0,a/(J34+b)^c_, =SUMIF(Dn_MH,A34,Con =SUMIF(Dn_MH,A35,SSD_ =2.78*E35*G35 =SUMIF(Dn_MH,A35,Cum =IF(I35>0,maxif(Dn_MH=IF(I35>0,a/(J35+b)^c_, =SUMIF(Dn_MH,A35,Con =SUMIF(Dn_MH,A36,SSD_ =2.78*E36*G36 =SUMIF(Dn_MH,A36,Cum =IF(I36>0,maxif(Dn_MH=IF(I36>0,a/(J36+b)^c_, =SUMIF(Dn_MH,A36,Con =SUMIF(Dn_MH,A37,SSD_ =2.78*E37*G37 =SUMIF(Dn_MH,A37,Cum =IF(I37>0,maxif(Dn_MH=IF(I37>0,a/(J37+b)^c_, =SUMIF(Dn_MH,A37,Con =SUMIF(Dn_MH,A38,SSD_ =2.78*E38*G38 =SUMIF(Dn_MH,A38,Cum =IF(I38>0,maxif(Dn_MH=IF(I38>0,a/(J38+b)^c_, =SUMIF(Dn_MH,A38,Con =SUMIF(Dn_MH,A39,SSD_ =2.78*E39*G39 =SUMIF(Dn_MH,A39,Cum =IF(I39>0,maxif(Dn_MH=IF(I39>0,a/(J39+b)^c_, =SUMIF(Dn_MH,A39,Con =SUMIF(Dn_MH,A40,SSD_ =2.78*E40*G40 =SUMIF(Dn_MH,A40,Cum =IF(I40>0,maxif(Dn_MH=IF(I40>0,a/(J40+b)^c_, =SUMIF(Dn_MH,A40,Con =SUMIF(Dn_MH,A41,SSD_ =2.78*E41*G41 =SUMIF(Dn_MH,A41,Cum =IF(I41>0,maxif(Dn_MH=IF(I41>0,a/(J41+b)^c_, =SUMIF(Dn_MH,A41,Con =SUMIF(Dn_MH,A42,SSD_ =2.78*E42*G42 =SUMIF(Dn_MH,A42,Cum =IF(I42>0,maxif(Dn_MH=IF(I42>0,a/(J42+b)^c_, =SUMIF(Dn_MH,A42,Con =SUMIF(Dn_MH,A79,SSD_ =2.78*E79*G79 =SUMIF(Dn_MH,A79,Cum =IF(I79>0,maxif(Dn_MH=IF(I79>0,a/(J79+b)^c_, =SUMIF(Dn_MH,A79,Con Notes: 1. For L/s use Coefficient Zoning/Land Use 6. Intensity of rainfall i = 2. Runoff coef 0.2 Parks - Cemeteries - Playgroun Town of Whitby values 3. To convert 0.45 Single Family Residential Frequency a 4. Q = 2.78 * A 0.55 Semi-detached Residential ha * mm 0.65 Townhouses m³/s = 0.75 Apts & Medium Density Composite 0.75 Schools & Churches Industrial Areas Commercial Areas Rev Oct 7. Hydraulic Radius R =

2 20/01/ of 8 TOW SSD v3 Instructions: 1. Fill in the highlighted blue 2. Optionally change green Allowable 3. Calculations are automa 4. Press Alt+F11 to see VB Designed Minimum Maximum Transition Velocity Minimum P Σ Q Nominal Pipe D Pipe D Actual (m) Pipe Length Pipe S o A p (m 2 ) R (m) Q f (L/s) (m) (m) (m/m) L/s (m/m) =L14+1 =M14+1 =N14+1 =O14+1 =P14+1 =Q14+1 =R14+1 =S14+1 =T14+1 =U14+1 V (m/s) Critical Slope =IF(I15>0,I15*K15*MTO_R =IF(AND(M15>0,Mannin=IF(N15>0,1.016*N15,0 =IF(O15>0,PI()*O15^ 2 /4,0) =IF(O15>0,O15/4,0) =IF(AND(U15>0,R15>0),U=IF(AND(Manning_n>0,=IF(AND(O15>0,Mannin =IF(I16>0,I16*K16*MTO_R =IF(AND(M16>0,Mannin=IF(N16>0,1.016*N16,0 =IF(O16>0,PI()*O16^ 2 /4,0) =IF(O16>0,O16/4,0) =IF(AND(U16>0,R16>0),U=IF(AND(Manning_n>0,=IF(AND(O16>0,Mannin =IF(I17>0,I17*K17*MTO_R =IF(AND(M17>0,Mannin=IF(N17>0,1.016*N17,0 =IF(O17>0,PI()*O17^ 2 /4,0) =IF(O17>0,O17/4,0) =IF(AND(U17>0,R17>0),U=IF(AND(Manning_n>0,=IF(AND(O17>0,Mannin =IF(I18>0,I18*K18*MTO_R =IF(AND(M18>0,Mannin=IF(N18>0,1.016*N18,0 =IF(O18>0,PI()*O18^ 2 /4,0) =IF(O18>0,O18/4,0) =IF(AND(U18>0,R18>0),U=IF(AND(Manning_n>0,=IF(AND(O18>0,Mannin =IF(I19>0,I19*K19*MTO_R =IF(AND(M19>0,Mannin=IF(N19>0,1.016*N19,0 =IF(O19>0,PI()*O19^ 2 /4,0) =IF(O19>0,O19/4,0) =IF(AND(U19>0,R19>0),U=IF(AND(Manning_n>0,=IF(AND(O19>0,Mannin =IF(I20>0,I20*K20*MTO_R =IF(AND(M20>0,Mannin=IF(N20>0,1.016*N20,0 =IF(O20>0,PI()*O20^ 2 /4,0) =IF(O20>0,O20/4,0) =IF(AND(U20>0,R20>0),U=IF(AND(Manning_n>0,=IF(AND(O20>0,Mannin =IF(I21>0,I21*K21*MTO_R =IF(AND(M21>0,Mannin=IF(N21>0,1.016*N21,0 =IF(O21>0,PI()*O21^ 2 /4,0) =IF(O21>0,O21/4,0) =IF(AND(U21>0,R21>0),U=IF(AND(Manning_n>0,=IF(AND(O21>0,Mannin =IF(I22>0,I22*K22*MTO_R =IF(AND(M22>0,Mannin=IF(N22>0,1.016*N22,0 =IF(O22>0,PI()*O22^ 2 /4,0) =IF(O22>0,O22/4,0) =IF(AND(U22>0,R22>0),U=IF(AND(Manning_n>0,=IF(AND(O22>0,Mannin =IF(I23>0,I23*K23*MTO_R =IF(AND(M23>0,Mannin=IF(N23>0,1.016*N23,0 =IF(O23>0,PI()*O23^ 2 /4,0) =IF(O23>0,O23/4,0) =IF(AND(U23>0,R23>0),U=IF(AND(Manning_n>0,=IF(AND(O23>0,Mannin =IF(I24>0,I24*K24*MTO_R =IF(AND(M24>0,Mannin=IF(N24>0,1.016*N24,0 =IF(O24>0,PI()*O24^ 2 /4,0) =IF(O24>0,O24/4,0) =IF(AND(U24>0,R24>0),U=IF(AND(Manning_n>0,=IF(AND(O24>0,Mannin =IF(I25>0,I25*K25*MTO_R =IF(AND(M25>0,Mannin=IF(N25>0,1.016*N25,0 =IF(O25>0,PI()*O25^ 2 /4,0) =IF(O25>0,O25/4,0) =IF(AND(U25>0,R25>0),U=IF(AND(Manning_n>0,=IF(AND(O25>0,Mannin =IF(I26>0,I26*K26*MTO_R =IF(AND(M26>0,Mannin=IF(N26>0,1.016*N26,0 =IF(O26>0,PI()*O26^ 2 /4,0) =IF(O26>0,O26/4,0) =IF(AND(U26>0,R26>0),U=IF(AND(Manning_n>0,=IF(AND(O26>0,Mannin =IF(I27>0,I27*K27*MTO_R =IF(AND(M27>0,Mannin=IF(N27>0,1.016*N27,0 =IF(O27>0,PI()*O27^ 2 /4,0) =IF(O27>0,O27/4,0) =IF(AND(U27>0,R27>0),U=IF(AND(Manning_n>0,=IF(AND(O27>0,Mannin =IF(I28>0,I28*K28*MTO_R =IF(AND(M28>0,Mannin=IF(N28>0,1.016*N28,0 =IF(O28>0,PI()*O28^ 2 /4,0) =IF(O28>0,O28/4,0) =IF(AND(U28>0,R28>0),U=IF(AND(Manning_n>0,=IF(AND(O28>0,Mannin =IF(I29>0,I29*K29*MTO_R =IF(AND(M29>0,Mannin=IF(N29>0,1.016*N29,0 =IF(O29>0,PI()*O29^ 2 /4,0) =IF(O29>0,O29/4,0) =IF(AND(U29>0,R29>0),U=IF(AND(Manning_n>0,=IF(AND(O29>0,Mannin =IF(I30>0,I30*K30*MTO_R =IF(AND(M30>0,Mannin=IF(N30>0,1.016*N30,0 =IF(O30>0,PI()*O30^ 2 /4,0) =IF(O30>0,O30/4,0) =IF(AND(U30>0,R30>0),U=IF(AND(Manning_n>0,=IF(AND(O30>0,Mannin =IF(I31>0,I31*K31*MTO_R =IF(AND(M31>0,Mannin=IF(N31>0,1.016*N31,0 =IF(O31>0,PI()*O31^ 2 /4,0) =IF(O31>0,O31/4,0) =IF(AND(U31>0,R31>0),U=IF(AND(Manning_n>0,=IF(AND(O31>0,Mannin =IF(I32>0,I32*K32*MTO_R =IF(AND(M32>0,Mannin=IF(N32>0,1.016*N32,0 =IF(O32>0,PI()*O32^ 2 /4,0) =IF(O32>0,O32/4,0) =IF(AND(U32>0,R32>0),U=IF(AND(Manning_n>0,=IF(AND(O32>0,Mannin =IF(I33>0,I33*K33*MTO_R =IF(AND(M33>0,Mannin=IF(N33>0,1.016*N33,0 =IF(O33>0,PI()*O33^ 2 /4,0) =IF(O33>0,O33/4,0) =IF(AND(U33>0,R33>0),U=IF(AND(Manning_n>0,=IF(AND(O33>0,Mannin =IF(I34>0,I34*K34*MTO_R =IF(AND(M34>0,Mannin=IF(N34>0,1.016*N34,0 =IF(O34>0,PI()*O34^ 2 /4,0) =IF(O34>0,O34/4,0) =IF(AND(U34>0,R34>0),U=IF(AND(Manning_n>0,=IF(AND(O34>0,Mannin =IF(I35>0,I35*K35*MTO_R =IF(AND(M35>0,Mannin=IF(N35>0,1.016*N35,0 =IF(O35>0,PI()*O35^ 2 /4,0) =IF(O35>0,O35/4,0) =IF(AND(U35>0,R35>0),U=IF(AND(Manning_n>0,=IF(AND(O35>0,Mannin =IF(I36>0,I36*K36*MTO_R =IF(AND(M36>0,Mannin=IF(N36>0,1.016*N36,0 =IF(O36>0,PI()*O36^ 2 /4,0) =IF(O36>0,O36/4,0) =IF(AND(U36>0,R36>0),U=IF(AND(Manning_n>0,=IF(AND(O36>0,Mannin =IF(I37>0,I37*K37*MTO_R =IF(AND(M37>0,Mannin=IF(N37>0,1.016*N37,0 =IF(O37>0,PI()*O37^ 2 /4,0) =IF(O37>0,O37/4,0) =IF(AND(U37>0,R37>0),U=IF(AND(Manning_n>0,=IF(AND(O37>0,Mannin =IF(I38>0,I38*K38*MTO_R =IF(AND(M38>0,Mannin=IF(N38>0,1.016*N38,0 =IF(O38>0,PI()*O38^ 2 /4,0) =IF(O38>0,O38/4,0) =IF(AND(U38>0,R38>0),U=IF(AND(Manning_n>0,=IF(AND(O38>0,Mannin =IF(I39>0,I39*K39*MTO_R =IF(AND(M39>0,Mannin=IF(N39>0,1.016*N39,0 =IF(O39>0,PI()*O39^ 2 /4,0) =IF(O39>0,O39/4,0) =IF(AND(U39>0,R39>0),U=IF(AND(Manning_n>0,=IF(AND(O39>0,Mannin =IF(I40>0,I40*K40*MTO_R =IF(AND(M40>0,Mannin=IF(N40>0,1.016*N40,0 =IF(O40>0,PI()*O40^ 2 /4,0) =IF(O40>0,O40/4,0) =IF(AND(U40>0,R40>0),U=IF(AND(Manning_n>0,=IF(AND(O40>0,Mannin =IF(I41>0,I41*K41*MTO_R =IF(AND(M41>0,Mannin=IF(N41>0,1.016*N41,0 =IF(O41>0,PI()*O41^ 2 /4,0) =IF(O41>0,O41/4,0) =IF(AND(U41>0,R41>0),U=IF(AND(Manning_n>0,=IF(AND(O41>0,Mannin =IF(I42>0,I42*K42*MTO_R =IF(AND(M42>0,Mannin=IF(N42>0,1.016*N42,0 =IF(O42>0,PI()*O42^ 2 /4,0) =IF(O42>0,O42/4,0) =IF(AND(U42>0,R42>0),U=IF(AND(Manning_n>0,=IF(AND(O42>0,Mannin =IF(I79>0,I79*K79*MTO_R =IF(AND(M79>0,Mannin=IF(N79>0,1.016*N79,0 =IF(O79>0,PI()*O79^ 2 /4,0) =IF(O79>0,O79/4,0) =IF(AND(U79>0,R79>0),U=IF(AND(Manning_n>0,=IF(AND(O79>0,Mannin 8. V = 1/n where R is hydraulic radius in m b c S is slope in m/m n is Manning's coefficient = Minor System 9. Qf = Ap where Ap is area of flow (full is assume V is velocity in m/s Qf is capacity of flow (full is assu Major System (HGL) use Qf = 1000 * Ap * V for capacity in D [ 4^1⅔ * n * Q / π / S^½ ]^⅜ 10. Veloci Max Veloc PIPE SELECTION

3 20/01/ of 8 TOW SSD v3 Design Frequency MTO Runoff Factor Rainfall Station(s) Minimum Drop at MH Minimum Cover 5 =IF(Urban_Rural<>"Rural",IF(Design_Storm>= Urban Critical Capacity L/s PROFILE Upstream D/S Time of Flow (min.) Minor Losses (m) Fall in Sewer (m) Surface Elev. (m) Invert Elev. (m) Invert Elev. (m) =V14+1 =W14+1 =X14+1 =Y14+1 =Z14+1 =AA14+1 =AB14+1 =AC14+1 REMARKS =IF(AND(V15>0,R15>0 =IF(AND(P15>0,U15>0 =IF(AND(U15>0,k_t>0),=IF(AND(P15>0,Q15>0 =IF(AND(Min_Cover>0, =IF(AND(AC15>0),AC1 =IF(AND(P15>0,O15>0 =IF(O15>0,IF(OR(M15>Ratio*T15,M15 =IF(AND(V16>0,R16>0 =IF(AND(P16>0,U16>0 =IF(AND(U16>0,k_t>0),=IF(AND(P16>0,Q16>0 =IF(AND(Min_Cover>0, =IF(AND(AC16>0),AC1 =IF(AND(P16>0,O16>0 =IF(O16>0,IF(OR(M16>Ratio*T16,M16 =IF(AND(V17>0,R17>0 =IF(AND(P17>0,U17>0 =IF(AND(U17>0,k_t>0),=IF(AND(P17>0,Q17>0 =IF(AND(Min_Cover>0, =IF(AND(AC17>0),AC1 =IF(AND(P17>0,O17>0 =IF(O17>0,IF(OR(M17>Ratio*T17,M17 =IF(AND(V18>0,R18>0 =IF(AND(P18>0,U18>0 =IF(AND(U18>0,k_t>0),=IF(AND(P18>0,Q18>0 =IF(AND(Min_Cover>0, =IF(AND(AC18>0),AC1 =IF(AND(P18>0,O18>0 =IF(O18>0,IF(OR(M18>Ratio*T18,M18 =IF(AND(V19>0,R19>0 =IF(AND(P19>0,U19>0 =IF(AND(U19>0,k_t>0),=IF(AND(P19>0,Q19>0 =IF(AND(Min_Cover>0, =IF(AND(AC19>0),AC1 =IF(AND(P19>0,O19>0 =IF(O19>0,IF(OR(M19>Ratio*T19,M19 =IF(AND(V20>0,R20>0 =IF(AND(P20>0,U20>0 =IF(AND(U20>0,k_t>0),=IF(AND(P20>0,Q20>0 =IF(AND(Min_Cover>0, =IF(AND(AC20>0),AC2 =IF(AND(P20>0,O20>0 =IF(O20>0,IF(OR(M20>Ratio*T20,M20 =IF(AND(V21>0,R21>0 =IF(AND(P21>0,U21>0 =IF(AND(U21>0,k_t>0),=IF(AND(P21>0,Q21>0 =IF(AND(Min_Cover>0, =IF(AND(AC21>0),AC2 =IF(AND(P21>0,O21>0 =IF(O21>0,IF(OR(M21>Ratio*T21,M21 =IF(AND(V22>0,R22>0 =IF(AND(P22>0,U22>0 =IF(AND(U22>0,k_t>0),=IF(AND(P22>0,Q22>0 =IF(AND(Min_Cover>0, =IF(AND(AC22>0),AC2 =IF(AND(P22>0,O22>0 =IF(O22>0,IF(OR(M22>Ratio*T22,M22 =IF(AND(V23>0,R23>0 =IF(AND(P23>0,U23>0 =IF(AND(U23>0,k_t>0),=IF(AND(P23>0,Q23>0 =IF(AND(Min_Cover>0, =IF(AND(AC23>0),AC2 =IF(AND(P23>0,O23>0 =IF(O23>0,IF(OR(M23>Ratio*T23,M23 =IF(AND(V24>0,R24>0 =IF(AND(P24>0,U24>0 =IF(AND(U24>0,k_t>0),=IF(AND(P24>0,Q24>0 =IF(AND(Min_Cover>0, =IF(AND(AC24>0),AC2 =IF(AND(P24>0,O24>0 =IF(O24>0,IF(OR(M24>Ratio*T24,M24 =IF(AND(V25>0,R25>0 =IF(AND(P25>0,U25>0 =IF(AND(U25>0,k_t>0),=IF(AND(P25>0,Q25>0 =IF(AND(Min_Cover>0, =IF(AND(AC25>0),AC2 =IF(AND(P25>0,O25>0 =IF(O25>0,IF(OR(M25>Ratio*T25,M25 =IF(AND(V26>0,R26>0 =IF(AND(P26>0,U26>0 =IF(AND(U26>0,k_t>0),=IF(AND(P26>0,Q26>0 =IF(AND(Min_Cover>0, =IF(AND(AC26>0),AC2 =IF(AND(P26>0,O26>0 =IF(O26>0,IF(OR(M26>Ratio*T26,M26 =IF(AND(V27>0,R27>0 =IF(AND(P27>0,U27>0 =IF(AND(U27>0,k_t>0),=IF(AND(P27>0,Q27>0 =IF(AND(Min_Cover>0, =IF(AND(AC27>0),AC2 =IF(AND(P27>0,O27>0 =IF(O27>0,IF(OR(M27>Ratio*T27,M27 =IF(AND(V28>0,R28>0 =IF(AND(P28>0,U28>0 =IF(AND(U28>0,k_t>0),=IF(AND(P28>0,Q28>0 =IF(AND(Min_Cover>0, =IF(AND(AC28>0),AC2 =IF(AND(P28>0,O28>0 =IF(O28>0,IF(OR(M28>Ratio*T28,M28 =IF(AND(V29>0,R29>0 =IF(AND(P29>0,U29>0 =IF(AND(U29>0,k_t>0),=IF(AND(P29>0,Q29>0 =IF(AND(Min_Cover>0, =IF(AND(AC29>0),AC2 =IF(AND(P29>0,O29>0 =IF(O29>0,IF(OR(M29>Ratio*T29,M29 =IF(AND(V30>0,R30>0 =IF(AND(P30>0,U30>0 =IF(AND(U30>0,k_t>0),=IF(AND(P30>0,Q30>0 =IF(AND(Min_Cover>0, =IF(AND(AC30>0),AC3 =IF(AND(P30>0,O30>0 =IF(O30>0,IF(OR(M30>Ratio*T30,M30 =IF(AND(V31>0,R31>0 =IF(AND(P31>0,U31>0 =IF(AND(U31>0,k_t>0),=IF(AND(P31>0,Q31>0 =IF(AND(Min_Cover>0, =IF(AND(AC31>0),AC3 =IF(AND(P31>0,O31>0 =IF(O31>0,IF(OR(M31>Ratio*T31,M31 =IF(AND(V32>0,R32>0 =IF(AND(P32>0,U32>0 =IF(AND(U32>0,k_t>0),=IF(AND(P32>0,Q32>0 =IF(AND(Min_Cover>0, =IF(AND(AC32>0),AC3 =IF(AND(P32>0,O32>0 =IF(O32>0,IF(OR(M32>Ratio*T32,M32 =IF(AND(V33>0,R33>0 =IF(AND(P33>0,U33>0 =IF(AND(U33>0,k_t>0),=IF(AND(P33>0,Q33>0 =IF(AND(Min_Cover>0, =IF(AND(AC33>0),AC3 =IF(AND(P33>0,O33>0 =IF(O33>0,IF(OR(M33>Ratio*T33,M33 =IF(AND(V34>0,R34>0 =IF(AND(P34>0,U34>0 =IF(AND(U34>0,k_t>0),=IF(AND(P34>0,Q34>0 =IF(AND(Min_Cover>0, =IF(AND(AC34>0),AC3 =IF(AND(P34>0,O34>0 =IF(O34>0,IF(OR(M34>Ratio*T34,M34 =IF(AND(V35>0,R35>0 =IF(AND(P35>0,U35>0 =IF(AND(U35>0,k_t>0),=IF(AND(P35>0,Q35>0 =IF(AND(Min_Cover>0, =IF(AND(AC35>0),AC3 =IF(AND(P35>0,O35>0 =IF(O35>0,IF(OR(M35>Ratio*T35,M35 =IF(AND(V36>0,R36>0 =IF(AND(P36>0,U36>0 =IF(AND(U36>0,k_t>0),=IF(AND(P36>0,Q36>0 =IF(AND(Min_Cover>0, =IF(AND(AC36>0),AC3 =IF(AND(P36>0,O36>0 =IF(O36>0,IF(OR(M36>Ratio*T36,M36 =IF(AND(V37>0,R37>0 =IF(AND(P37>0,U37>0 =IF(AND(U37>0,k_t>0),=IF(AND(P37>0,Q37>0 =IF(AND(Min_Cover>0, =IF(AND(AC37>0),AC3 =IF(AND(P37>0,O37>0 =IF(O37>0,IF(OR(M37>Ratio*T37,M37 =IF(AND(V38>0,R38>0 =IF(AND(P38>0,U38>0 =IF(AND(U38>0,k_t>0),=IF(AND(P38>0,Q38>0 =IF(AND(Min_Cover>0, =IF(AND(AC38>0),AC3 =IF(AND(P38>0,O38>0 =IF(O38>0,IF(OR(M38>Ratio*T38,M38 =IF(AND(V39>0,R39>0 =IF(AND(P39>0,U39>0 =IF(AND(U39>0,k_t>0),=IF(AND(P39>0,Q39>0 =IF(AND(Min_Cover>0, =IF(AND(AC39>0),AC3 =IF(AND(P39>0,O39>0 =IF(O39>0,IF(OR(M39>Ratio*T39,M39 =IF(AND(V40>0,R40>0 =IF(AND(P40>0,U40>0 =IF(AND(U40>0,k_t>0),=IF(AND(P40>0,Q40>0 =IF(AND(Min_Cover>0, =IF(AND(AC40>0),AC4 =IF(AND(P40>0,O40>0 =IF(O40>0,IF(OR(M40>Ratio*T40,M40 =IF(AND(V41>0,R41>0 =IF(AND(P41>0,U41>0 =IF(AND(U41>0,k_t>0),=IF(AND(P41>0,Q41>0 =IF(AND(Min_Cover>0, =IF(AND(AC41>0),AC4 =IF(AND(P41>0,O41>0 =IF(O41>0,IF(OR(M41>Ratio*T41,M41 =IF(AND(V42>0,R42>0 =IF(AND(P42>0,U42>0 =IF(AND(U42>0,k_t>0),=IF(AND(P42>0,Q42>0 =IF(AND(Min_Cover>0, =IF(AND(AC42>0),AC4 =IF(AND(P42>0,O42>0 =IF(O42>0,IF(OR(M42>Ratio*T42,M42 =IF(AND(V79>0,R79>0 =IF(AND(P79>0,U79>0 =IF(AND(U79>0,k_t>0),=IF(AND(P79>0,Q79>0 =IF(AND(Min_Cover>0, =IF(AND(AC79>0),AC7 =IF(AND(P79>0,O79>0 =IF(O79>0,IF(OR(M79>Ratio*T79,M Partially Full Pipes α = asin(2*h/d-1) Af = (D/2)^2*(π/2+α+sin Rf = D/4*(1 + sinα*cosα where H is height of flow (H<D α is angle from springlin Rf is hydraulic radius (m Af is area from surface 12. Capacity (@H/D=0.5 Max Capacity (@ H/D=0 80% H/D = % H/D = % H/D = 0.341

4 20/01/ of 8 TOW SSD v3 Summary of sizes and lengths. Use the table below to estimate ponding storage in the pipe. Estimating Quantities Elevation Pipe Size (m) Count Sum Area Upstream m² 0.2 =COUNTIF(Nom_Diam,AF15) =SUMIF(Nom_Diam,AF15,Pipe_Length) =IF(AND(O15>0,Elevation>0,AB15>0),areaflow(O15,Elevation-AB15),0) 0.25 =COUNTIF(Nom_Diam,AF16) =SUMIF(Nom_Diam,AF16,Pipe_Length) =IF(AND(O16>0,Elevation>0,AB16>0),areaflow(O16,Elevation-AB16),0) 0.3 =COUNTIF(Nom_Diam,AF17) =SUMIF(Nom_Diam,AF17,Pipe_Length) =IF(AND(O17>0,Elevation>0,AB17>0),areaflow(O17,Elevation-AB17),0) =COUNTIF(Nom_Diam,AF18) =SUMIF(Nom_Diam,AF18,Pipe_Length) =IF(AND(O18>0,Elevation>0,AB18>0),areaflow(O18,Elevation-AB18),0) 0.45 =COUNTIF(Nom_Diam,AF19) =SUMIF(Nom_Diam,AF19,Pipe_Length) =IF(AND(O19>0,Elevation>0,AB19>0),areaflow(O19,Elevation-AB19),0) =COUNTIF(Nom_Diam,AF20) =SUMIF(Nom_Diam,AF20,Pipe_Length) =IF(AND(O20>0,Elevation>0,AB20>0),areaflow(O20,Elevation-AB20),0) 0.6 =COUNTIF(Nom_Diam,AF21) =SUMIF(Nom_Diam,AF21,Pipe_Length) =IF(AND(O21>0,Elevation>0,AB21>0),areaflow(O21,Elevation-AB21),0) =COUNTIF(Nom_Diam,AF22) =SUMIF(Nom_Diam,AF22,Pipe_Length) =IF(AND(O22>0,Elevation>0,AB22>0),areaflow(O22,Elevation-AB22),0) 0.75 =COUNTIF(Nom_Diam,AF23) =SUMIF(Nom_Diam,AF23,Pipe_Length) =IF(AND(O23>0,Elevation>0,AB23>0),areaflow(O23,Elevation-AB23),0) =COUNTIF(Nom_Diam,AF24) =SUMIF(Nom_Diam,AF24,Pipe_Length) =IF(AND(O24>0,Elevation>0,AB24>0),areaflow(O24,Elevation-AB24),0) 0.9 =COUNTIF(Nom_Diam,AF25) =SUMIF(Nom_Diam,AF25,Pipe_Length) =IF(AND(O25>0,Elevation>0,AB25>0),areaflow(O25,Elevation-AB25),0) =COUNTIF(Nom_Diam,AF26) =SUMIF(Nom_Diam,AF26,Pipe_Length) =IF(AND(O26>0,Elevation>0,AB26>0),areaflow(O26,Elevation-AB26),0) 1.05 =COUNTIF(Nom_Diam,AF27) =SUMIF(Nom_Diam,AF27,Pipe_Length) =IF(AND(O27>0,Elevation>0,AB27>0),areaflow(O27,Elevation-AB27),0) 1.2 =COUNTIF(Nom_Diam,AF28) =SUMIF(Nom_Diam,AF28,Pipe_Length) =IF(AND(O28>0,Elevation>0,AB28>0),areaflow(O28,Elevation-AB28),0) 1.35 =COUNTIF(Nom_Diam,AF29) =SUMIF(Nom_Diam,AF29,Pipe_Length) =IF(AND(O29>0,Elevation>0,AB29>0),areaflow(O29,Elevation-AB29),0) 1.5 =COUNTIF(Nom_Diam,AF30) =SUMIF(Nom_Diam,AF30,Pipe_Length) =IF(AND(O30>0,Elevation>0,AB30>0),areaflow(O30,Elevation-AB30),0) 1.65 =COUNTIF(Nom_Diam,AF31) =SUMIF(Nom_Diam,AF31,Pipe_Length) =IF(AND(O31>0,Elevation>0,AB31>0),areaflow(O31,Elevation-AB31),0) 1.8 =COUNTIF(Nom_Diam,AF32) =SUMIF(Nom_Diam,AF32,Pipe_Length) =IF(AND(O32>0,Elevation>0,AB32>0),areaflow(O32,Elevation-AB32),0) 1.95 =COUNTIF(Nom_Diam,AF33) =SUMIF(Nom_Diam,AF33,Pipe_Length) =IF(AND(O33>0,Elevation>0,AB33>0),areaflow(O33,Elevation-AB33),0) 2.1 =COUNTIF(Nom_Diam,AF34) =SUMIF(Nom_Diam,AF34,Pipe_Length) =IF(AND(O34>0,Elevation>0,AB34>0),areaflow(O34,Elevation-AB34),0) 2.25 =COUNTIF(Nom_Diam,AF35) =SUMIF(Nom_Diam,AF35,Pipe_Length) =IF(AND(O35>0,Elevation>0,AB35>0),areaflow(O35,Elevation-AB35),0) 2.4 =COUNTIF(Nom_Diam,AF36) =SUMIF(Nom_Diam,AF36,Pipe_Length) =IF(AND(O36>0,Elevation>0,AB36>0),areaflow(O36,Elevation-AB36),0) 2.55 =COUNTIF(Nom_Diam,AF37) =SUMIF(Nom_Diam,AF37,Pipe_Length) =IF(AND(O37>0,Elevation>0,AB37>0),areaflow(O37,Elevation-AB37),0) 2.7 =COUNTIF(Nom_Diam,AF38) =SUMIF(Nom_Diam,AF38,Pipe_Length) =IF(AND(O38>0,Elevation>0,AB38>0),areaflow(O38,Elevation-AB38),0) 3 =COUNTIF(Nom_Diam,AF39) =SUMIF(Nom_Diam,AF39,Pipe_Length) =IF(AND(O39>0,Elevation>0,AB39>0),areaflow(O39,Elevation-AB39),0) 3.3 =COUNTIF(Nom_Diam,AF40) =SUMIF(Nom_Diam,AF40,Pipe_Length) =IF(AND(O40>0,Elevation>0,AB40>0),areaflow(O40,Elevation-AB40),0) 3.6 =COUNTIF(Nom_Diam,AF41) =SUMIF(Nom_Diam,AF41,Pipe_Length) =IF(AND(O41>0,Elevation>0,AB41>0),areaflow(O41,Elevation-AB41),0) =IF(AND(O42>0,Elevation>0,AB42>0),areaflow(O42,Elevation-AB42),0) =IF(AND(O79>0,Elevation>0,AB79>0),areaflow(O79,Elevation-AB79),0)

5 20/01/ of 8 TOW SSD v3 Insert elevation of water surface below. All other calculations are automatic. Area Downstream m² Pipe and Surface Volumes to Elevation Full Length m =IF(AND(O15>0,Elevation>0,AC15>0),areaflow(O15,Elevation-AC15),0) =IF(AND(O16>0,Elevation>0,AC16>0),areaflow(O16,Elevation-AC16),0) =IF(AND(O17>0,Elevation>0,AC17>0),areaflow(O17,Elevation-AC17),0) =IF(AND(O18>0,Elevation>0,AC18>0),areaflow(O18,Elevation-AC18),0) =IF(AND(O19>0,Elevation>0,AC19>0),areaflow(O19,Elevation-AC19),0) =IF(AND(O20>0,Elevation>0,AC20>0),areaflow(O20,Elevation-AC20),0) =IF(AND(O21>0,Elevation>0,AC21>0),areaflow(O21,Elevation-AC21),0) =IF(AND(O22>0,Elevation>0,AC22>0),areaflow(O22,Elevation-AC22),0) =IF(AND(O23>0,Elevation>0,AC23>0),areaflow(O23,Elevation-AC23),0) =IF(AND(O24>0,Elevation>0,AC24>0),areaflow(O24,Elevation-AC24),0) =IF(AND(O25>0,Elevation>0,AC25>0),areaflow(O25,Elevation-AC25),0) =IF(AND(O26>0,Elevation>0,AC26>0),areaflow(O26,Elevation-AC26),0) =IF(AND(O27>0,Elevation>0,AC27>0),areaflow(O27,Elevation-AC27),0) =IF(AND(O28>0,Elevation>0,AC28>0),areaflow(O28,Elevation-AC28),0) =IF(AND(O29>0,Elevation>0,AC29>0),areaflow(O29,Elevation-AC29),0) =IF(AND(O30>0,Elevation>0,AC30>0),areaflow(O30,Elevation-AC30),0) =IF(AND(O31>0,Elevation>0,AC31>0),areaflow(O31,Elevation-AC31),0) =IF(AND(O32>0,Elevation>0,AC32>0),areaflow(O32,Elevation-AC32),0) =IF(AND(O33>0,Elevation>0,AC33>0),areaflow(O33,Elevation-AC33),0) =IF(AND(O34>0,Elevation>0,AC34>0),areaflow(O34,Elevation-AC34),0) =IF(AND(O35>0,Elevation>0,AC35>0),areaflow(O35,Elevation-AC35),0) =IF(AND(O36>0,Elevation>0,AC36>0),areaflow(O36,Elevation-AC36),0) =IF(AND(O37>0,Elevation>0,AC37>0),areaflow(O37,Elevation-AC37),0) =IF(AND(O38>0,Elevation>0,AC38>0),areaflow(O38,Elevation-AC38),0) =IF(AND(O39>0,Elevation>0,AC39>0),areaflow(O39,Elevation-AC39),0) =IF(AND(O40>0,Elevation>0,AC40>0),areaflow(O40,Elevation-AC40),0) =IF(AND(O41>0,Elevation>0,AC41>0),areaflow(O41,Elevation-AC41),0) =IF(AND(O42>0,Elevation>0,AC42>0),areaflow(O42,Elevation-AC42),0) =IF(AND(O79>0,Elevation>0,AC79>0),areaflow(O79,Elevation-AC79),0) =IF(AND(Q15>0,P15>0,AC15>0,Elevation>0),MIN(P15,(Elevation-AC15)/Q15),0) =IF(AND(Q16>0,P16>0,AC16>0,Elevation>0),MIN(P16,(Elevation-AC16)/Q16),0) =IF(AND(Q17>0,P17>0,AC17>0,Elevation>0),MIN(P17,(Elevation-AC17)/Q17),0) =IF(AND(Q18>0,P18>0,AC18>0,Elevation>0),MIN(P18,(Elevation-AC18)/Q18),0) =IF(AND(Q19>0,P19>0,AC19>0,Elevation>0),MIN(P19,(Elevation-AC19)/Q19),0) =IF(AND(Q20>0,P20>0,AC20>0,Elevation>0),MIN(P20,(Elevation-AC20)/Q20),0) =IF(AND(Q21>0,P21>0,AC21>0,Elevation>0),MIN(P21,(Elevation-AC21)/Q21),0) =IF(AND(Q22>0,P22>0,AC22>0,Elevation>0),MIN(P22,(Elevation-AC22)/Q22),0) =IF(AND(Q23>0,P23>0,AC23>0,Elevation>0),MIN(P23,(Elevation-AC23)/Q23),0) =IF(AND(Q24>0,P24>0,AC24>0,Elevation>0),MIN(P24,(Elevation-AC24)/Q24),0) =IF(AND(Q25>0,P25>0,AC25>0,Elevation>0),MIN(P25,(Elevation-AC25)/Q25),0) =IF(AND(Q26>0,P26>0,AC26>0,Elevation>0),MIN(P26,(Elevation-AC26)/Q26),0) =IF(AND(Q27>0,P27>0,AC27>0,Elevation>0),MIN(P27,(Elevation-AC27)/Q27),0) =IF(AND(Q28>0,P28>0,AC28>0,Elevation>0),MIN(P28,(Elevation-AC28)/Q28),0) =IF(AND(Q29>0,P29>0,AC29>0,Elevation>0),MIN(P29,(Elevation-AC29)/Q29),0) =IF(AND(Q30>0,P30>0,AC30>0,Elevation>0),MIN(P30,(Elevation-AC30)/Q30),0) =IF(AND(Q31>0,P31>0,AC31>0,Elevation>0),MIN(P31,(Elevation-AC31)/Q31),0) =IF(AND(Q32>0,P32>0,AC32>0,Elevation>0),MIN(P32,(Elevation-AC32)/Q32),0) =IF(AND(Q33>0,P33>0,AC33>0,Elevation>0),MIN(P33,(Elevation-AC33)/Q33),0) =IF(AND(Q34>0,P34>0,AC34>0,Elevation>0),MIN(P34,(Elevation-AC34)/Q34),0) =IF(AND(Q35>0,P35>0,AC35>0,Elevation>0),MIN(P35,(Elevation-AC35)/Q35),0) =IF(AND(Q36>0,P36>0,AC36>0,Elevation>0),MIN(P36,(Elevation-AC36)/Q36),0) =IF(AND(Q37>0,P37>0,AC37>0,Elevation>0),MIN(P37,(Elevation-AC37)/Q37),0) =IF(AND(Q38>0,P38>0,AC38>0,Elevation>0),MIN(P38,(Elevation-AC38)/Q38),0) =IF(AND(Q39>0,P39>0,AC39>0,Elevation>0),MIN(P39,(Elevation-AC39)/Q39),0) =IF(AND(Q40>0,P40>0,AC40>0,Elevation>0),MIN(P40,(Elevation-AC40)/Q40),0) =IF(AND(Q41>0,P41>0,AC41>0,Elevation>0),MIN(P41,(Elevation-AC41)/Q41),0) =IF(AND(Q42>0,P42>0,AC42>0,Elevation>0),MIN(P42,(Elevation-AC42)/Q42),0) =IF(AND(Q79>0,P79>0,AC79>0,Elevation>0),MIN(P79,(Elevation-AC79)/Q79),0)

6 20/01/ of 8 TOW SSD v3 Use the table below to Volume m³ =IF(AND(AL15>0,AK15>0),AL15*(AJ15+AK15)/IF(AJ15>0,2,3),0)+SUM(AP15,AR15,AT15,AV15,AX15,AZ15,BB15,BD15) =IF(AND(AL16>0,AK16>0),AL16*(AJ16+AK16)/IF(AJ16>0,2,3),0)+SUM(AP16,AR16,AT16,AV16,AX16,AZ16,BB16,BD16) =IF(AND(AL17>0,AK17>0),AL17*(AJ17+AK17)/IF(AJ17>0,2,3),0)+SUM(AP17,AR17,AT17,AV17,AX17,AZ17,BB17,BD17) =IF(AND(AL18>0,AK18>0),AL18*(AJ18+AK18)/IF(AJ18>0,2,3),0)+SUM(AP18,AR18,AT18,AV18,AX18,AZ18,BB18,BD18) =IF(AND(AL19>0,AK19>0),AL19*(AJ19+AK19)/IF(AJ19>0,2,3),0)+SUM(AP19,AR19,AT19,AV19,AX19,AZ19,BB19,BD19) =IF(AND(AL20>0,AK20>0),AL20*(AJ20+AK20)/IF(AJ20>0,2,3),0)+SUM(AP20,AR20,AT20,AV20,AX20,AZ20,BB20,BD20) =IF(AND(AL21>0,AK21>0),AL21*(AJ21+AK21)/IF(AJ21>0,2,3),0)+SUM(AP21,AR21,AT21,AV21,AX21,AZ21,BB21,BD21) =IF(AND(AL22>0,AK22>0),AL22*(AJ22+AK22)/IF(AJ22>0,2,3),0)+SUM(AP22,AR22,AT22,AV22,AX22,AZ22,BB22,BD22) =IF(AND(AL23>0,AK23>0),AL23*(AJ23+AK23)/IF(AJ23>0,2,3),0)+SUM(AP23,AR23,AT23,AV23,AX23,AZ23,BB23,BD23) =IF(AND(AL24>0,AK24>0),AL24*(AJ24+AK24)/IF(AJ24>0,2,3),0)+SUM(AP24,AR24,AT24,AV24,AX24,AZ24,BB24,BD24) =IF(AND(AL25>0,AK25>0),AL25*(AJ25+AK25)/IF(AJ25>0,2,3),0)+SUM(AP25,AR25,AT25,AV25,AX25,AZ25,BB25,BD25) =IF(AND(AL26>0,AK26>0),AL26*(AJ26+AK26)/IF(AJ26>0,2,3),0)+SUM(AP26,AR26,AT26,AV26,AX26,AZ26,BB26,BD26) =IF(AND(AL27>0,AK27>0),AL27*(AJ27+AK27)/IF(AJ27>0,2,3),0)+SUM(AP27,AR27,AT27,AV27,AX27,AZ27,BB27,BD27) =IF(AND(AL28>0,AK28>0),AL28*(AJ28+AK28)/IF(AJ28>0,2,3),0)+SUM(AP28,AR28,AT28,AV28,AX28,AZ28,BB28,BD28) =IF(AND(AL29>0,AK29>0),AL29*(AJ29+AK29)/IF(AJ29>0,2,3),0)+SUM(AP29,AR29,AT29,AV29,AX29,AZ29,BB29,BD29) =IF(AND(AL30>0,AK30>0),AL30*(AJ30+AK30)/IF(AJ30>0,2,3),0)+SUM(AP30,AR30,AT30,AV30,AX30,AZ30,BB30,BD30) =IF(AND(AL31>0,AK31>0),AL31*(AJ31+AK31)/IF(AJ31>0,2,3),0)+SUM(AP31,AR31,AT31,AV31,AX31,AZ31,BB31,BD31) =IF(AND(AL32>0,AK32>0),AL32*(AJ32+AK32)/IF(AJ32>0,2,3),0)+SUM(AP32,AR32,AT32,AV32,AX32,AZ32,BB32,BD32) =IF(AND(AL33>0,AK33>0),AL33*(AJ33+AK33)/IF(AJ33>0,2,3),0)+SUM(AP33,AR33,AT33,AV33,AX33,AZ33,BB33,BD33) =IF(AND(AL34>0,AK34>0),AL34*(AJ34+AK34)/IF(AJ34>0,2,3),0)+SUM(AP34,AR34,AT34,AV34,AX34,AZ34,BB34,BD34) =IF(AND(AL35>0,AK35>0),AL35*(AJ35+AK35)/IF(AJ35>0,2,3),0)+SUM(AP35,AR35,AT35,AV35,AX35,AZ35,BB35,BD35) =IF(AND(AL36>0,AK36>0),AL36*(AJ36+AK36)/IF(AJ36>0,2,3),0)+SUM(AP36,AR36,AT36,AV36,AX36,AZ36,BB36,BD36) =IF(AND(AL37>0,AK37>0),AL37*(AJ37+AK37)/IF(AJ37>0,2,3),0)+SUM(AP37,AR37,AT37,AV37,AX37,AZ37,BB37,BD37) =IF(AND(AL38>0,AK38>0),AL38*(AJ38+AK38)/IF(AJ38>0,2,3),0)+SUM(AP38,AR38,AT38,AV38,AX38,AZ38,BB38,BD38) =IF(AND(AL39>0,AK39>0),AL39*(AJ39+AK39)/IF(AJ39>0,2,3),0)+SUM(AP39,AR39,AT39,AV39,AX39,AZ39,BB39,BD39) =IF(AND(AL40>0,AK40>0),AL40*(AJ40+AK40)/IF(AJ40>0,2,3),0)+SUM(AP40,AR40,AT40,AV40,AX40,AZ40,BB40,BD40) =IF(AND(AL41>0,AK41>0),AL41*(AJ41+AK41)/IF(AJ41>0,2,3),0)+SUM(AP41,AR41,AT41,AV41,AX41,AZ41,BB41,BD41) =IF(AND(AL42>0,AK42>0),AL42*(AJ42+AK42)/IF(AJ42>0,2,3),0)+SUM(AP42,AR42,AT42,AV42,AX42,AZ42,BB42,BD42) =IF(AND(AL79>0,AK79>0),AL79*(AJ79+AK79)/IF(AJ79>0,2,3),0)+SUM(AP79,AR79,AT79,AV79,AX79,AZ79,BB79,BD79) Cumulative Volume m³ =IF(AM15>0,AM15+SUMIF(Dn_MH,A15,Cumul_PV),0) =IF(AM16>0,AM16+SUMIF(Dn_MH,A16,Cumul_PV),0) =IF(AM17>0,AM17+SUMIF(Dn_MH,A17,Cumul_PV),0) =IF(AM18>0,AM18+SUMIF(Dn_MH,A18,Cumul_PV),0) =IF(AM19>0,AM19+SUMIF(Dn_MH,A19,Cumul_PV),0) =IF(AM20>0,AM20+SUMIF(Dn_MH,A20,Cumul_PV),0) =IF(AM21>0,AM21+SUMIF(Dn_MH,A21,Cumul_PV),0) =IF(AM22>0,AM22+SUMIF(Dn_MH,A22,Cumul_PV),0) =IF(AM23>0,AM23+SUMIF(Dn_MH,A23,Cumul_PV),0) =IF(AM24>0,AM24+SUMIF(Dn_MH,A24,Cumul_PV),0) =IF(AM25>0,AM25+SUMIF(Dn_MH,A25,Cumul_PV),0) =IF(AM26>0,AM26+SUMIF(Dn_MH,A26,Cumul_PV),0) =IF(AM27>0,AM27+SUMIF(Dn_MH,A27,Cumul_PV),0) =IF(AM28>0,AM28+SUMIF(Dn_MH,A28,Cumul_PV),0) =IF(AM29>0,AM29+SUMIF(Dn_MH,A29,Cumul_PV),0) =IF(AM30>0,AM30+SUMIF(Dn_MH,A30,Cumul_PV),0) =IF(AM31>0,AM31+SUMIF(Dn_MH,A31,Cumul_PV),0) =IF(AM32>0,AM32+SUMIF(Dn_MH,A32,Cumul_PV),0) =IF(AM33>0,AM33+SUMIF(Dn_MH,A33,Cumul_PV),0) =IF(AM34>0,AM34+SUMIF(Dn_MH,A34,Cumul_PV),0) =IF(AM35>0,AM35+SUMIF(Dn_MH,A35,Cumul_PV),0) =IF(AM36>0,AM36+SUMIF(Dn_MH,A36,Cumul_PV),0) =IF(AM37>0,AM37+SUMIF(Dn_MH,A37,Cumul_PV),0) =IF(AM38>0,AM38+SUMIF(Dn_MH,A38,Cumul_PV),0) =IF(AM39>0,AM39+SUMIF(Dn_MH,A39,Cumul_PV),0) =IF(AM40>0,AM40+SUMIF(Dn_MH,A40,Cumul_PV),0) =IF(AM41>0,AM41+SUMIF(Dn_MH,A41,Cumul_PV),0) =IF(AM42>0,AM42+SUMIF(Dn_MH,A42,Cumul_PV),0) =IF(AM79>0,AM79+SUMIF(Dn_MH,A79,Cumul_PV),0) A

7 20/01/ of 8 TOW SSD v3 Insert contour elevations in highlighted cells of Row 12. Start at the lowest rim elevation or elevation in Column 37. Insert areas for the 2 or more contours at all catchment areas. Volume is automatically calculated between areas. Ponding Areas for Elevation Ponding Volumes m³ V A V A V =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ15>0,AQ$12>AO$12,AQ$12>AA15),(AQ$12-MAX(AO$12,AA15))*(AO15+AQ15)/IF(AO15=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ16>0,AQ$12>AO$12,AQ$12>AA16),(AQ$12-MAX(AO$12,AA16))*(AO16+AQ16)/IF(AO16=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ17>0,AQ$12>AO$12,AQ$12>AA17),(AQ$12-MAX(AO$12,AA17))*(AO17+AQ17)/IF(AO17=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ18>0,AQ$12>AO$12,AQ$12>AA18),(AQ$12-MAX(AO$12,AA18))*(AO18+AQ18)/IF(AO18=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ19>0,AQ$12>AO$12,AQ$12>AA19),(AQ$12-MAX(AO$12,AA19))*(AO19+AQ19)/IF(AO19=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ20>0,AQ$12>AO$12,AQ$12>AA20),(AQ$12-MAX(AO$12,AA20))*(AO20+AQ20)/IF(AO20=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ21>0,AQ$12>AO$12,AQ$12>AA21),(AQ$12-MAX(AO$12,AA21))*(AO21+AQ21)/IF(AO21=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ22>0,AQ$12>AO$12,AQ$12>AA22),(AQ$12-MAX(AO$12,AA22))*(AO22+AQ22)/IF(AO22=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ23>0,AQ$12>AO$12,AQ$12>AA23),(AQ$12-MAX(AO$12,AA23))*(AO23+AQ23)/IF(AO23=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ24>0,AQ$12>AO$12,AQ$12>AA24),(AQ$12-MAX(AO$12,AA24))*(AO24+AQ24)/IF(AO24=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ25>0,AQ$12>AO$12,AQ$12>AA25),(AQ$12-MAX(AO$12,AA25))*(AO25+AQ25)/IF(AO25=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ26>0,AQ$12>AO$12,AQ$12>AA26),(AQ$12-MAX(AO$12,AA26))*(AO26+AQ26)/IF(AO26=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ27>0,AQ$12>AO$12,AQ$12>AA27),(AQ$12-MAX(AO$12,AA27))*(AO27+AQ27)/IF(AO27=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ28>0,AQ$12>AO$12,AQ$12>AA28),(AQ$12-MAX(AO$12,AA28))*(AO28+AQ28)/IF(AO28=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ29>0,AQ$12>AO$12,AQ$12>AA29),(AQ$12-MAX(AO$12,AA29))*(AO29+AQ29)/IF(AO29=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ30>0,AQ$12>AO$12,AQ$12>AA30),(AQ$12-MAX(AO$12,AA30))*(AO30+AQ30)/IF(AO30=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ31>0,AQ$12>AO$12,AQ$12>AA31),(AQ$12-MAX(AO$12,AA31))*(AO31+AQ31)/IF(AO31=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ32>0,AQ$12>AO$12,AQ$12>AA32),(AQ$12-MAX(AO$12,AA32))*(AO32+AQ32)/IF(AO32=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ33>0,AQ$12>AO$12,AQ$12>AA33),(AQ$12-MAX(AO$12,AA33))*(AO33+AQ33)/IF(AO33=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ34>0,AQ$12>AO$12,AQ$12>AA34),(AQ$12-MAX(AO$12,AA34))*(AO34+AQ34)/IF(AO34=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ35>0,AQ$12>AO$12,AQ$12>AA35),(AQ$12-MAX(AO$12,AA35))*(AO35+AQ35)/IF(AO35=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ36>0,AQ$12>AO$12,AQ$12>AA36),(AQ$12-MAX(AO$12,AA36))*(AO36+AQ36)/IF(AO36=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ37>0,AQ$12>AO$12,AQ$12>AA37),(AQ$12-MAX(AO$12,AA37))*(AO37+AQ37)/IF(AO37=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ38>0,AQ$12>AO$12,AQ$12>AA38),(AQ$12-MAX(AO$12,AA38))*(AO38+AQ38)/IF(AO38=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ39>0,AQ$12>AO$12,AQ$12>AA39),(AQ$12-MAX(AO$12,AA39))*(AO39+AQ39)/IF(AO39=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ40>0,AQ$12>AO$12,AQ$12>AA40),(AQ$12-MAX(AO$12,AA40))*(AO40+AQ40)/IF(AO40=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ41>0,AQ$12>AO$12,AQ$12>AA41),(AQ$12-MAX(AO$12,AA41))*(AO41+AQ41)/IF(AO41=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ42>0,AQ$12>AO$12,AQ$12>AA42),(AQ$12-MAX(AO$12,AA42))*(AO42+AQ42)/IF(AO42=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev =IF(AND(AO$12<Elevation,AQ$12<=Elevation,AQ79>0,AQ$12>AO$12,AQ$12>AA79),(AQ$12-MAX(AO$12,AA79))*(AO79+AQ79)/IF(AO79=0,3,2),0) =IF(AND(AQ$12<Elev =IF(AND(AS$12<Elev

8 20/01/ of 8 TOW SSD v3 ns m² A V A V A V A V A V A