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Recovery and Processing of Logging Residue on Steep Terrain in Northern Idaho Item Info

Logging residue recovery in steep terrain was tested using a small wood yarder, the Christy Yarder, to concurrently yard sawlogs and logging residue and a wheeled skidder to shuttle material to a remote landing. Residue processing was tested with a wood shear – firewood processor. The shear used a hydraulically operated knife to chop residue pieces into firewood lengths. A hydraulic loader fed the shear. Although the shear was tested on gentle terrain the operation would work well in steep terrain because of the linear arrangement of equipment. Results of the two field studies were used to simulate combined operations of the yarder and shear in various operating modes that included operation of the shear and loader at the yarder location. Results indicate that the yarder can effectively remove sawlog and residue pieces concurrently. The yarder productive turn was not influenced by the residue pieces in turn. Imbalanced production between the yarder and skidder did, however, create delays at the yarder because the yarder waited for the skidder to clear the yarder landing deck. Skidder production was directly impacted by residue recovery with the extra time spent piling residue pieces and maneuvering at the landing. Total residue recovery costs ranged from $10.75 to $22.85 per green ton of residue recovered.

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Title:
Recovery and Processing of Logging Residue on Steep Terrain in Northern Idaho
Creator:
Verner, Eric S.
Date Created:
1983-11
Description:
Logging residue recovery in steep terrain was tested using a small wood yarder, the Christy Yarder, to concurrently yard sawlogs and logging residue and a wheeled skidder to shuttle material to a remote landing. Residue processing was tested with a wood shear – firewood processor. The shear used a hydraulically operated knife to chop residue pieces into firewood lengths. A hydraulic loader fed the shear. Although the shear was tested on gentle terrain the operation would work well in steep terrain because of the linear arrangement of equipment. Results of the two field studies were used to simulate combined operations of the yarder and shear in various operating modes that included operation of the shear and loader at the yarder location. Results indicate that the yarder can effectively remove sawlog and residue pieces concurrently. The yarder productive turn was not influenced by the residue pieces in turn. Imbalanced production between the yarder and skidder did, however, create delays at the yarder because the yarder waited for the skidder to clear the yarder landing deck. Skidder production was directly impacted by residue recovery with the extra time spent piling residue pieces and maneuvering at the landing. Total residue recovery costs ranged from $10.75 to $22.85 per green ton of residue recovered.
Document Type:
Thesis
Library Call Number:
SD544.V47
Subjects:
Flat Creek Christy Yarder residue recovery logging residue yarder recovery forest operations
UIEF Unit:
Flat Creek
Stand Number:
116
Location:
UIEF; Flat Creek
Latitude:
46.849831
Longitude:
-116.731595
Department:
Department of Forest Products
Type:
text
Format:
application/pdf

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Preferred Citation:
"Recovery and Processing of Logging Residue on Steep Terrain in Northern Idaho", UIEF Research Exchange, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/uief/items/uief_0023.html
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