Estimated Annual Indoor Demand (gal)
cistern possible new cisterns
7,672
Estimated Annual Rainwater Harvesting Potential (gal)
7421 7,992 OVERALL 28,800 13,069
Austin, TX 78724
105
Date
BUILDINGS RANKED IN ITS WATER DEMAND AND RAINWATER HARVESTING POTENTIAL
Scale
6
#5 Grenhouse
Page Number
WATER BALANCE :
proximity groups general direction of downhill
833 666 0 0 1,000
Catchment Area (sq. ft.) Monthly Indoor Demand (gals) Landscaped area Water in Storage to Begin (gal) Tank Size (gal)
A Appliances or uses which are measured on a per-person basis Toilets ULFT Dual Flush (solids) Dual Flush (liquids) Baths & Showers Showerhead Bath (gal/bath) Faucets (personal hygience, cooking, and cleaning of surfaces)
Appliances or uses which are measured on a per-use basis (not a per-person basis) Clothes Washer Dishwasher
Miscellaneous
Water consumption (gal/flush or gal/min)
B Assumptions (flushes/person/day or min/person/day)
C
D
Number of persons in household
Monthly Demand = A x B x C x 30
1.6 1.6 0.13
6 2 4
0 0 0
0 0 0
2 50
5 N/A
0 0
0 0
1
5
1
150
A
B
C
D
Water Consumption (gal/load)
Assumptions (loads per week)
Household Monthly Demand = A x B x 4.3
20 8
6 0
516 0
A
B
D
Water Consumption (gal)
C Multiplication factor Frequency of use (to get from daily/weekly/ (daily/weekly/monthly/yearly) yearly demand to monthly)
Household Monthly Demand =AxC 0 0 0
Total
666
Month
Prec. (in)
rainwater harvesting indoor demand potential (gal) (gal)
January February March April May June July August September October November December
1.79 2.4 1.84 2.89 4.4 3.41 1.75 2.03 3.22 3.5 2.05 2.18
744 997 764 1,201 1,828 1,417 727 843 1,338 1,454 852 906
666 666 666 666 666 666 666 666 666 666 666 666
Total
31.46
13,069
7,992
Total roof Surface area (sq ft) Rainwater harvesting System efficiency rating
833
0.8
666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666
666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666 666
1.79 2.05 2.47 0.73 2.90 0.50 2.14 1.66 1.45 1.21 0.20 0.04 1.16 0.71 2.35 1.44 2.65 2.44 0.46 0.82 1.58 2.93 0.15 2.18 1.79
0.07 3.51 0.95 3.39 2.44 1.75
0.99 2.16 0.63 1.01 0.67 0.56 0.29 2.29 1.75 1.03 0.74 0.89 1.51 0.22 1.06 0.52 0.25 0.58 1.01 2.49 2.45 1.28 0.38
791 904 1,091 324 1,279 220 945 733 641 535 87 18 510 312 1,036 637 1,168 1,078 203 360 698 1,293 68 962 790 33 1,549 418 1,497 1,078 772 437 953 278 443 297 248 129 1,009 771 456 328 392 664 97 466 229 111 257 447 1,100 1,079 564 169
125 363 788 446 1,060 554 833 900 875 744 165 -483 -156 -354 370 341 843 1,255 537 231 263 890 293 588 712 78 962 713 1,545 1,412 1,106 771 1,058 612 390 21 -397 -537 343 448 239 -100 -274 -2 -569 -200 -437 -555 -409 -219 434 847 745 248
7
125 363 788 446 1,000 554 833 900 875 744 165 0 0 0 370 341 843 1,000 537 231 263 890 293 588 712 78 962 713 1,000 1,000 1,000 771 1,000 612 390 21 0 0 343 448 239 0 0 0 0 0 0 0 0 0 434 847 745 248
Center for Maximum Potential Building Systems
5
proposed swimming pool (34k gal)
Jan-05 Feb-05 Mar-05 Apr-05 May-05 Jun-05 Jul-05 Aug-05 Sep-05 Oct-05 Nov-05 Dec-05 Jan-06 Feb-06 Mar-06 Apr-06 May-06 Jun-06 Jul-06 Aug-06 Sep-06 Oct-06 Nov-06 Dec-06 Jan-07 Feb-07 Mar-07 Apr-07 May-07 Jun-07 Jul-07 Aug-07 Sep-07 Oct-07 Nov-07 Dec-07 Jan-08 Feb-08 Mar-08 Apr-08 May-08 Jun-08 Jul-08 Aug-08 Sep-08 Oct-08 Nov-08 Dec-08 Jan-09 Feb-09 Mar-09 Apr-09 May-09 Jun-09
Author
10
Lead Designer
currently collecting
End End of of month month Net NetWater Water cistern storage cistern storage Storage Storage (gal) (gal)
Job Title
Month Month
Rainfall Rainfall Total Indoor Indoor Total Rainfall Rainfall collected collected deman demand demand (in) (85% demand (in) (85% d efficiency) efficiency)
Project Title
potential collection
8604 FM 969
existing water lines