Agenda - 01-10-1994 - Laserfiche WebLink

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While the approach to calculating tree volume is similar to that used for building volume,it is somewhat more complicated. The steps identified below are intended to simplify that process. 1. Measure that portion of the site on which existing forest land is to be retained. One means of accomplishing 7h&CAM SttAgy-Cal=ebft this is through the use of a planimeter, an instrument used 7me V oA#w by surveyors and engineers to measure acreages. If the area is a uniform geometric shape such as a rectangle, EXJL>ifiv ftetatl0 n the area can be calculated;e.g.,length x width. Exist tQ wooded area 26,690 sq.ft. to be reWvd,incRAV natural 2. Estimate the height of the existing forest land and multiply area and forest&nd that height times the amount of site area covered by AverWe hephtof selected tree W ft. the forested area. Height estimates may be made using a species in wood area field manual or other reference source which identifes VOARW of exlsr ft 1,334,025 cu.ft. canopy height and spread for various tree species. Use w&mWarea the predominant tree species as an 'Indicator"in Itilew PAb7tAIaterrW estimating the height of the forested area. Lame rreas- from Tree P+4nft Detail 3. Multiply the forest land area by average mature height of Nwraberof trees a the indicator species.The result is the volume of the Cawpy hermit 50 ft existing forest land. Canopy spread 40 ft. Area per tree 1,256 Sq.ft. 4. To calculate the volume of new plant material,the best VD&M par tree 62,600 cu.ft source of information is the comprehensive site rota)AW tree VoAa W 502,400 cu.ft. development plan,particularly the landscape plan. The plan lists the types of trees and shrubs which will be installed to Sma#Trees- from Tree Phntt Detail satisfy the landscape design criteria of section 3.2. Aldnber of trees 11 Canopy hegtht 20 ft. Plant materials will fall into one of the five categories Canopy spmw 15 ft. listed below. In calculating the volume of new plant Area per tree 177 sq.ft. material,the caunopy spread and height for each category VoAm per tree 3,532 CU.ft. should be used.They are representative of the average rotal sma4'tree Vot" 39,952 eu.ft. sizes that plants materials used widely in this region will reach upon maturity. Shmft- from Shuab PMi#V DetaW Alumber of shrubs(4-6 ft j 93 CANOPY CANOPY CANOPY Canopy hetpht 5 ft PLANT HE IOHT SPREAD AREA Canopy Wwad 4 ft MATERIAL (Feet) (Feet) (Sq.Ft.) Area per shrub 13 sq.ft. Voom per shrub 63 cu.ft. Large Trees 50 35 1,256 Total V0&N of s&V t 5,959 cu.ft Small Trees 20 15 177 Shrubs 6-12 Feet 10 6 28 TOts7/11771lP 1,881,136Gf�1� Shrubs 4-6 Feet 5 4 13 Shrubs 1-4 Feet 2 3 7 5. Using the canopy height and area from the table above, the volume of each type of plant material can be calculated (height x area x number of plaints). The total volume of all plants is the sum of new and existing material. Ecorr mic DeveA*wnt&t tarts Deson A4arxW Pwe 2.3.9