Tech Manual - Drainage Solutions, Inc.
Tech Manual - Drainage Solutions, Inc.
Tech Manual - Drainage Solutions, Inc.
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
TECHNICAL MANUAL<br />
EXTERIOR DRAINAGE PRODUCTS<br />
Channel Grate Selection Chart<br />
Spee-D, Mini and Micro Channel<br />
Capacity NDS Part Numbers Outlet Fits Grate Open Surface<br />
GPM Various Colors Pipe Size Area (in 2 )<br />
25.2/ft 240, 241, 242, 243, 244, 251 3,4" 19.3/ ft<br />
14.7/ft 541, 542, 543, 544, 551 2" 11.3/ft<br />
2.6/ft 8001, 8002, 8003 1 1/2" 2.0/ft<br />
Example<br />
50' x 50' area, clay-light vegetation soil, Atlanta, GA<br />
Step 1: Surface area = 2,500 square feet.<br />
Step 2: Coefficient of runoff = .60<br />
Step 3: 1 hour maximum rainfall = 3.5 inches<br />
Step 4: Q = (2,500) (.60) (3.50) /96.23 = 55 gal/min<br />
Possibilities<br />
A) 4" or larger pipe used with either an NDS 1210, 1211, 1212 or larger grate.<br />
B) A multiple of smaller size pipe lines and/or grates which together achieve adequate flow in gallons per<br />
minute.<br />
NOTE: This is a reference chart only. For critical areas, consult a landscape architect or engineer.
Change language