Sawmod: A Tool For Optimizing Potential Profit From Beetle-Killed Southern Pine Sawtimber

Authors

  • Steven A. Sinclair

Keywords:

Sawmill, computer model, insect-killed, Pinus, softwood, Dendroctonus, operations-research

Abstract

Currently the operators of small- to medium-sized sawmills have minimal information upon which to base processing decisions and profit estimations. This problem is further complicated when unusual variables, such as processing beetle-killed timber, are superimposed upon normal operating parameters.

SAWMOD (SAWmill decision MODel) is a computer algorithm designed to provide accurate information for decision-making. By using actual lumber grade yields, estimated residue volumes, current market prices, and readily obtainable production variables, economically optimal processing schemes may be derived from SAWMOD. Potential economic returns from conversion into lumber and/or chips for each log diameter within six log quality classes are considered. Estimates of total profit and break-even log cost FOB mill for each log quality class are provided by SAWMOD. These estimates are based on a given log diameter distribution and total log volume.

Structured to be individualized for a given sawmill and periodically updated, SAWMOD is a powerful decision tool that will help to continue progress toward a highest-value utilization of our saw-timber resource.

References

Anon. 1975. Southeast area southern pine beetle outbreak status. USDA Forest Service, Southeastern Area State and Private Forestry, Atlanta, GA.nAnon. 1977. Weekly lumber price guide. Random lengths (August 19, 1977). Miller-Freeman, Inc. Eugene, OR.nBennett, F., and F. Lloyd. 1974. Volume of saw-log residues as calculated from log rule formulae. USDA For. Serv. Res. Pap. SE-118. 16 pp.nDobie, J., and D. M. Wright. 1978a. Lumber values from beetle-killed lodgepole pine. For. Prod. J. 28(6):44-47.nDobie, J., and D. M. Wright. 1978b. Lumber yields and values from dead, standing alpine fir. For. Prod. J. 28(5):27-30.nRow, C., and S. Guttenburg. 1966. Determining weight-volume relationships for saw logs. For. Prod. J. 16(5):39-47.nRow, C. Fasick, and S. Guttenburg. 1965. Improving sawmill profits through operations research. USDA For. Serv. Res. Pap. SO-20. 26 pp.nSafranyik, L., D. M. Shrimpton, and H. S. Whitney. 1966. Mountain pine beetle workshops—Planning and execution. Can. Forestry Serv. Pac. Forest Res. Cent. Victoria, B.C. BC-P-15. 41 pp.nSinclair, S. A., and G. Ifju. 1977. Processing beetle-killed southern pine-An opinion survey in Virginia. So. Lumberman 235(2915):11-14.nSinclair, S. A., and G. Ifju. 1979. Lumber quality of beetle-killed southern pine in Virginia. For. Prod. J. 29(4):18-22.nSinclair, S. A., G. Ifju. and H. J. Heikkenen. 1977. Lumber yield and grade recovery from southern pine sawtimber after beetle attack. So. J. Appl. For. 1(4):17-20.nSnellgrove, T. A., and T. D. Faley. 1977. Market values and problems associated with utilization of dead timber. For. Prod. J. 27(10):74-79.nSouthern Pine Inspection Bureau. 1970. Standard grading rules for southern pine lumber. Pensacola, Florida.n

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Published

2007-06-27

Issue

Number 1 / Spring 1980

Section

Research Contributions

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