Design Guide

Landscape Dripline Design _____________________________________________________________
■ Typical Design Procedures
NOTES:
■ Step 4: Lay out the laterals: (cont.)
D. Divide the lateral area (as determined in Step C above) by
the recommended lateral spacing (DW8) to obtain the
total number of spaces between laterals. Round off to the
nearest whole number to determine the exact number of
spaces necessary to cover the drip area.
Lateral area
Dripline lateral spacing
E. Add 1 to the number of spaces between driplines (from
Step D above) to determine the total number of driplines
across the widest part of the zone.
1 + Number of spaces between driplines = Total lengths of
dripline: ________
■ Step 5: For applications exceeding a 3% slope, place the laterals parallel
to the slope contour. Increase the calculated lateral spacing by
25% on the lower one-third of the slope to avoid excessive
drainage.
For areas exceeding 10 feet in elevation change, zone the lower
one-third of the slope separately from the upper two-thirds to
help control drainage.
■ Step 6: Determine the total estimated dripline footage required for each
zone. There will always be some waste with each installation.
Therefore, you should plan for additional footage by applying
an appropriate factor for each dripline footage calculation
(10%-25% should suffice).
A. Total dripline footage required: _________ = length of runs x
number of laterals
B. Total dripline footage required x 1.10 (10%) = _________ total
estimated dripline
footage required
(round off to nearest whole number)
= _______ spaces between driplines
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