Joe Landowner Location: Carroll, Iowa Twp/Rng/Sec: 082N 034W 08. Information and Estimated Cost Maximum pool surface area

Transcription

1 Client: Joe Landowner Location: Carroll, Iowa Twp/Rng/Sec: 082N 034W 08 Legend Structure Pool Features Max Temporary Pool Existing Tile Watershed ± Miles Kilometers Service Layer Credits: Sources: Esri, HERE, DeLorme, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), MapmyIndia, NGCC, OpenStreetMap contributors, and the GIS User Community Information and Estimated Cost Maximum pool surface area 1.82 ac Drainage time hrs Cost (includes all fill, tile and excavation costs) $4,758

2 Session Information Application: Preparer Information Name: Tom Buman Notes Disclaimer This estimate is for planning purposes only. In no way shall it be construed as an engineering design. Engineering designs must be approved by a licensed, professional engineer. This is a preliminary cost estimate for planning purposes only. The final construction cost may vary depending on actual site conditions, timing of construction, availability of fill materials, inflation, competitive bid process, construction method, etc. The content and products associated with Agren R BasinBuilder are provided to you on an as-is and as available basis. Agren, Inc. makes no representations or warranties of any kind, express or implied, as to the operation of Agren BasinBuilder or the information, estimates, content, materials, products or services included on or associated with Agren BasinBuilder. You expressly agree that your use of Agren BasinBuilder and all products and services included on or associated with Agren BasinBuilder are at your sole risk. Agren, Inc. does not make any representations, warranties or guarantees express or implied, regarding the accuracy, correctness, or completeness of the content of Agren BasinBuilder, nor the safety, reliability, title, timeliness, completeness, merchantability, conformity, or fitness for a particular purpose of the content of Agren BasinBuilder. It is your sole responsibility to independently evaluate the accuracy, correctness, or completeness of the content of Agren BasinBuilder and estimates produced with Agren BasinBuilder software. Agren, Inc. makes no representation, warranty, or guarantee that the content is free of infection from any viruses, worms, or other code or computer programming routines that are intended to damage or detrimentally interfere with any system data. 2/9/2018, 2:20:08 PM Powered by Agren R

3 Client: Joe Landowner Location: Carroll, Iowa Twp/Rng/Sec: 082N 034W 08 Legend Structure Pool Features Max Temporary Pool Existing Tile Watershed ± Miles Kilometers Service Layer Credits: Sources: Esri, HERE, DeLorme, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), MapmyIndia, NGCC, OpenStreetMap contributors, and the GIS User Community Information and Estimated Cost Maximum pool surface area 1.82 ac Drainage time hrs Cost (includes all fill, tile and excavation costs) $4,758 2/9/2018, 2:20:08 PM Powered by Agren R

4 Cost Item Quantity Unit Unit Cost Subtotal Dam fill 2346 cu yd $1.89 $4,433 Foundation cutoff fill 0 cu yd $1.89 $0 Foundation cutoff excavation 0 cu yd $2.50 $0 Existing tile 4.0 diameter inlets 1 ea $ $ diameter outlet 20 ft $7.75 $155 Total = $4,758 2/9/2018, 2:20:08 PM Powered by Agren R

5 A G B C D Inlet F E Basin/Tile (not to scale) Design Values A Dam top width 8 ft B Constructed fill elevation at centerline ft C Settle fill elevation at centerline ft D Dam back slope 2.5 :1 F Lowest point in dam centerline ft G Dam front slope 2.5 :1 2/9/2018, 2:20:08 PM Powered by Agren R

6 Planning Details Hydrology Dam Drainage area 28.2 ac Average watershed slope 10.7% Runoff curve number 83 Design storm event 10 yr/24 hr (4.6 in) Acres contributing sediment to basin design 28.2 ac Acres contributing surface water to basin design 28.2 ac Added settlement 5.0% Volume of constructed fill (includes foundation cutoff) cu yd Foundation cutoff excavation 0.0 cu yd Foundation cutoff depth 0.0 ft Foundation cutoff side slope ratio 0.0:1 Foundation cutoff bottom width 0.0 ft Settled fill height at centerline 11.5 ft Pool Volume of pool 6.04 ac-ft Average watershed erosion 5.0 t/ac/yr Delivery rate of erosion 100.0% Minimum years of sediment storage 10 yr Design reduction from tile flow 0.58 ac-ft Runoff stored 91.3% 2/9/2018, 2:20:08 PM Powered by Agren R

7 Planning Details Existing Tile Tile type Corrugated PVC Tile diameter 6.0 in Inlets required 1 Inlet diameter 4.0 in Design slope/grade 3.0% Outlets required 1 Outlet diameter 5.0 in Tile flow rate 0.84 cfs Contributions A: Does water contribute to an existing tile that outlets beyond the watershed? B: Does water contribute to storage requirement? C: Does sediment contribute to storage requirement? Subwatershed Area Answer Answer Answer ID (acres) to A to B to C SW Yes Yes Yes 2/9/2018, 2:20:08 PM Powered by Agren R

8 Stage Storage Data Settled Area Volume Acc. Vol. Acc. Vol. Area Elevation (sq ft) (cu ft) (cu ft) (ac ft) (ac) /9/2018, 2:20:08 PM Powered by Agren R

9 2/9/2018, 2:20:08 PM Powered by Agren R

10 Earthwork Dimensions Square yardage reflects earth quantity before settling. Ground Constructed Station Elevation Fill Elevation Grade Cu Yd /9/2018, 2:20:08 PM Powered by Agren R

11 Ground Constructed Station Elevation Fill Elevation Grade Cu Yd /9/2018, 2:20:08 PM Powered by Agren R

12 Hydrologic Soil Groups Assigned to the Watershed Legend Hydrology C Watershed ± Miles Kilometers Service Layer Credits: Sources: Esri, HERE, DeLorme, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), MapmyIndia, NGCC, OpenStreetMap contributors, and the GIS User Community Land Cover Types Assigned to the Watershed Legend Watershed Row Crop - C + CR - G Roads with gravel Row Crop - SR + CR - G Row Crop - SR + CR - G ± Miles Kilometers Service Layer Credits: Sources: Esri, HERE, DeLorme, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), MapmyIndia, NGCC, OpenStreetMap contributors, and the GIS User Community 2/9/2018, 2:20:08 PM Powered by Agren R

13 Runoff Curve Number Worksheet Subwatershed SW1 Hydrologic Soil Type Soil Group Cover Description RCN Area (ac) RCN x Area Exira C Roads with gravel Colo-Judson C Roads with gravel Marshall C Roads with gravel Exira C Row Crop - C + CR - G Exira C Row Crop - SR + CR - G Colo-Judson C Row Crop - C + CR - G Colo-Judson C Row Crop - SR + CR - G Marshall C Row Crop - SR + CR - G Marshall C Row Crop - C + CR - G RCN (Weighted) = / = 83 Totals: /9/2018, 2:20:08 PM Powered by Agren R

14 Technical Calculations Below are the math calculations used to construct this water and sediment control basin. Although some figures are rounded for display purposes, original non-rounded numbers were used in the equations. T W A (total watershed area) = acres SW 1 = 28 acres CET (surface water contributing to existing tile by subwatershed) SW 1 CET = 28 acres N CD (surface water not contributing to dam by subwatershed) SW 1 NCD = 0 acres CSD (sediment contributing to dam by subwatershed) SW 1 CSD = 28 acres m ex (existing tile slope) = 3.0% n ex (existing tile Manning s N) = D ex (existing tile diameter) = 0.5 ft (6.0 in) m (new tile slope) = 0.0% n (new tile Manning s N) = D (new tile diameter) = 0 ft (0.0 in) ye (minimum years of sediment storage) = 10 yr E (average watershed erosion) = 5.0 tons/acre CNU (runoff curve number for contributing area) = 83 CNP (runoff curve number for noncontributing area) = 0 P (design storm event) = 10 yr/24 hr (4.6 in) 2/9/2018, 2:20:08 PM Powered by Agren R

15 Design Constants Average weight of 1 acre foot of soil deposited in water = 1750 tons Total watershed surface area contributing water to an existing tile SACET = (SW 1 CET ) SACET = (28) SACET = 0 ac Total watershed surface area contributing water to the dam SACW D ac = T W A (SW 1 NCD) SACW D ac = (0) SACW D ac = ac Surface acres contributing sediment to dam SACSD = (SW 1 CSD) SACSD = (28) SACSD = ac Discharge rate of the new tile (Q new ) Q new = z n (D)8/3 m Q new = (0)8/3 0 Q new = 0 cfs Discharge rate of existing tile (Q ex ) Q ex = z n ex (D ex ) 8/3 m ex Q ex = (0.5)8/ Q ex = 0.84 cfs Runoff depth of the surface area contributing to dam design (RDU) RDU = RDU = RDU = 2.81 in [P 0.2( 1000 CNU 10)]2 P +0.8( 1000 CNU 10) [ ( )] ( ) 2/9/2018, 2:20:08 PM Powered by Agren R

16 Runoff depth of surface water contributing to existing tile (RDP ) RDP = RDP = RDP = 2.81 in [P 0.2( 1000 CNP 10)]2 P +0.8( 1000 CNP 10) [ ( )] ( ) Runoff volume of the surface water contributing to dam design (RV U) RV U = RDU SACW Dac 12 RV U = RV U = 6.62 ac-ft Runoff volume of the surface water contributing to existing tile (RV P ) RV P = RDP SACET 12 RV P = RV P = 0 ac-ft Combined runoff volume of surface water (RV ) RV = RV U + RV P RV = RV = 6.62 ac-ft Discharge rate for new tile and existing (QU) QU = RV U RV (Q new + Q ex ) QU = 6.62 ( ) 6.62 QU = 0.84 cfs Drainage time (T ) T = RV (Q new+q ex) 3600 T = (0+0.84) 3600 T = hrs 2/9/2018, 2:20:08 PM Powered by Agren R

17 Acre to square mile conversion SACW D sqmi = SACW D ac 640 ac/sqmi SACW D sqmi = 0.04 sq-mi Drainage coefficient (DC) DC = QU SACW D sqmi DC = DC = 0.71 in/day Required storage depth (S) S = RDU 1.27 DC 0.27 S = S = 2.57 in Required runoff storage (V W ) V W = S 12 SACW D ac V W = V W = 6.04 ac-ft Required sediment storage (V S ) V S = SACW Dac ye E 1750 V S = V S = 0.81 ac-ft Total required storage (V ) V = V W + V S V = V = 6.85 ac-ft 2/9/2018, 2:20:08 PM Powered by Agren R

18 Session Information Application: Preparer Information Name: Tom Buman Notes Disclaimer This estimate is for planning purposes only. In no way shall it be construed as an engineering design. Engineering designs must be approved by a licensed, professional engineer. This is a preliminary cost estimate for planning purposes only. The final construction cost may vary depending on actual site conditions, timing of construction, availability of fill materials, inflation, competitive bid process, construction method, etc. The content and products associated with Agren R BasinBuilder are provided to you on an as-is and as available basis. Agren, Inc. makes no representations or warranties of any kind, express or implied, as to the operation of Agren BasinBuilder or the information, estimates, content, materials, products or services included on or associated with Agren BasinBuilder. You expressly agree that your use of Agren BasinBuilder and all products and services included on or associated with Agren BasinBuilder are at your sole risk. Agren, Inc. does not make any representations, warranties or guarantees express or implied, regarding the accuracy, correctness, or completeness of the content of Agren BasinBuilder, nor the safety, reliability, title, timeliness, completeness, merchantability, conformity, or fitness for a particular purpose of the content of Agren BasinBuilder. It is your sole responsibility to independently evaluate the accuracy, correctness, or completeness of the content of Agren BasinBuilder and estimates produced with Agren BasinBuilder software. Agren, Inc. makes no representation, warranty, or guarantee that the content is free of infection from any viruses, worms, or other code or computer programming routines that are intended to damage or detrimentally interfere with any system data. 2/9/2018, 2:20:08 PM Powered by Agren R