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LASN Ordinances October 200609-27-06 | News



Oklahoma City Landscape Code, Part 2 ?EUR??,,????'??+ Strategies for Conformity to the Code

By Buck Abbey, ASLA




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So many points for a use area, so many points for parking, so many points for buffers! Sometimes the emphasis gets placed on achieving design points rather than design results. Here, however, the landscape architect has designed an attractive and functional multiple-use street area for storm water management. Such a subdivision buffer contains a minimum of four points for every 20 feet of frontage.


Two strategies can be used to measure compliance with landscape code requirements: a point system or ?EUR??,,????'??pure design.?EUR??,,????'??

  1. A point system assigns a certain number of points per defined use unit. A defined number of units are needed for compliance with the code. These requirements are always called out in the code.
  2. The pure design strategy looks at the site as related use-units that require certain types and amounts of planting. These units can be called ?EUR??,,????'??design components?EUR??,,????'?? of the landscape code and certain planting requirements are stated.

Performance standards or proscriptive standards (or both) can measure conformity to the code. These standards can be based upon specifications that can be given to measure the design quality of the plan. With the point system, the code determines design quality. Using a design strategy based upon site use and specifications allows the designer to determine design quality. That is the significant difference between the two.

More communities across the country base compliance with landscape codes upon design, not points. This is particularly true in the South and Southeast. Fewer and fewer communities are using point systems these days. Landscape architects find point systems more difficult to work with in a design context.

Point systems of measuring landscape code compliance is more common in Texas and Oklahoma.

Landscape administrators find the point system an easy way to measure design quality. Designers see the point system as a quota system. So many points for a use area, so many points for parking, so many points for buffers! Emphasis gets placed on designing to achieve points rather than design results. The point system makes the code cumbersome. Designers prefer to design landscapes to achieve a certain effect, a personal visual quality standard or just based upon, site, use, program and budget.






Some say a point system allows more design freedom and flexibility, but other designers say it leads to meeting code rather than quality design. Still, proper spacing, growth characteristics and combinations of texture, form, color and line are under the control of the designer, point system or not. Here we see a creative landscape design of street walls, vehicular use-area screens and open space plantings. A site greater than 5,000 sq. ft. requires one point for each 200 sq. ft. of developed area. Parking lot points equal two points per required parking space and one point for each proposed additional parking space. A maximum of 10 percent of the number of required parking spaces may be replaced with landscaping. Ten points of landscaping are required for each substituted parking space.


Points as a measure of design are assigned by the code, not the designer. Supporters say that issuing points rather than performance-based design standards allows more freedom and flexibility to the design. Designers disagree, saying the points lead a designer to a solution that meets the code rather than leading them to a quality design. In some communities this is called ?EUR??,,????'??codescape,?EUR??,,????'??? a general sameness of result indicating misdirected creativity. Designers are very leery of it.

For example, points do not reflect proper spacing, growth characteristics and combinations of texture, form, color and line often thought of as the true measure of design.

But in Oklahoma City a point system is used with good effect. Generally, the larger the site the more points needed, to meet compliance requirements.

Much of the text of this ordinance is devoted to explaining how to calculate points. Points are often awarded based upon a defined measuring system such as plant quantities and sizes. In addition, this code directs a proscribed number of points into certain use areas of the property based upon such factors as evergreen or deciduous character or type of ground cover.

The next time you work with a landscape code ask yourself. Am I designing to meet a certain number of points or am I designing use areas for certain affects within proscribed planting specifications. Both systems accomplish the same goal, they just do it in different way.

Fiver Steps to Comply with the OKC Landscape Ordinance

  1. Calculate Points to determine the quaintly of site points based upon size of the developed area and the number of parking spaces.
  2. Determine Plant Requirements by type and size to meet the point requirements of the code.
  3. Determine Additional Requirements for residential land uses, subdivisions and buffers.
  4. Develop the Design by preparing a landscape plan with plantings that meet the point requirements.
  5. Submit Landscape Plan. In OKC landscape plans can be prepared by any person as well as licensed landscape architects, architects or engineers.

TYPICAL POINT VALUES OKC LANDSCAPE CODE
Landscape Material Minimum Size Point Value
Large Tree 5?EUR??,,????'????EUR??,,????'??? caliper 20 pts
Medium Tree 2?EUR??,,????'????EUR??,,????'??? caliper 12 pts
Ornamental Tree 1?EUR??,,????'????EUR??,,????'??? caliper, 5-6?EUR??,,????'??? height 9 pts
Large Shrub 5 gallon, 24?EUR??,,????'????EUR??,,????'??? height 3 pts
Small Shrub 2 gallon, 8?EUR??,,????'????EUR??,,????'??? height 1 pts
Ornamental Grass 1 gallon .50 pts
Ground Cover 1 gallon .50 pts
Tree Preservation 6?EUR??,,????'????EUR??,,????'??? caliper 22 pts
Tree Preservation 10-15?EUR??,,????'????EUR??,,????'??? caliper 30 pts
Tree Preservation over 25?EUR??,,????'????EUR??,,????'??? caliper 50 pts
Landscape Berm 30?EUR??,,????'????EUR??,,????'??? height, 10?EUR??,,????'??? length 1pt per 5 lf
Turf Grass n/a .25 pts per sq. yd.






D.G. ?EUR??,,????'??Buck?EUR??,,????'?? Abbey, Associate Professor of Landscape Architecture at Louisiana State University, is LASN?EUR??,,????'???s Associate Editor for Legislation.



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