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S Sutopo
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SISTEM PENYARADAN PADA EKSPLOITASI HUTAN PINUS DI JAWA TENGAH S Sutopo; Maman M Idris
Jurnal Penelitian Hasil Hutan Vol 2, No 3 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5938.05 KB) | DOI: 10.20886/jphh.1985.2.3.1-9

Abstract

A paper  mill  is to  be erected  in Cilacap, Central Java in the near future. The raw material  must  come  from  the hilly pine  forests  in  the  Pekalongan  and Banyumas  area. The  mill's daily intake ranges between 1,000-1,500 m3 of  relatively small  diameter  pine  logs. Therefore manual yarding  system  must  be improved  to increase its productivity. One way to do this is to yard  with a  wheeled  cariage.The purpose of this investigation  is to  determine the feasibility of  this yarding system in hilly pine forest terrain. The investigation reveals the following   :Yarding system by  Roda II is favourable  in  the  hilly pine  forest area in Central Java.This system increases  the  income  per  manday  approximately  by 31%  compared to the  traditional system (ngglebeg) for a  distance of  1,0 km,  and  18%  for a distance of  2.0 km.Yarding productivity by Roda II is approximately  1.58  m3 per day.
KEMUNGKINAN PENGGUNAAN LATEX UNTUK STABILISASI BADAN JALAN HUTAN Rahardjo S Suparto; S Sutopo
Jurnal Penelitian Hasil Hutan Vol 3, No 3 (1986): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1986.3.3.13-18

Abstract

Among  the many known  stabilized methods  and materials that can be applied to improve forest  road stability,  latex is thought  of as one such material  that deserves trying.   This experiment  is to asses the possibility  of  using latex as a stabilizing  agent,The fol/owing   conclusions  are in order: Latex  can be used as stabilizing  agent for  clayey soils as subgrade  material.  A  4% latex content turned out to be effective  to keep swelling,  due to soaking  in water,  within a limit of 4,3%. Degree of compaction  has no significant  effect  of swell.  Degree of  compaction  and percentage  of  latex  content  has significant  effect  on bearing capacity.  Latex  may  be recommended   as an alternative  material for  stabilizing subgrade soil in forest  road construction.
SISTEM PENYARADAN PADA EKSPLOITASI HUTAN PINUS DI JAWA TENGAH S Sutopo; Maman M Idris
Jurnal Penelitian Hasil Hutan Vol 2, No 3 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1985.2.3.1-9

Abstract

A paper  mill  is to  be erected  in Cilacap, Central Java in the near future. The raw material  must  come  from  the hilly pine  forests  in  the  Pekalongan  and Banyumas  area. The  mill's daily intake ranges between 1,000-1,500 m3 of  relatively small  diameter  pine  logs. Therefore manual yarding  system  must  be improved  to increase its productivity. One way to do this is to yard  with a  wheeled  cariage.The purpose of this investigation  is to  determine the feasibility of  this yarding system in hilly pine forest terrain. The investigation reveals the following   :Yarding system by  Roda II is favourable  in  the  hilly pine  forest area in Central Java.This system increases  the  income  per  manday  approximately  by 31%  compared to the  traditional system (ngglebeg) for a  distance of  1,0 km,  and  18%  for a distance of  2.0 km.Yarding productivity by Roda II is approximately  1.58  m3 per day.
KEMUNGKINAN PENGGUNAAN LATEX UNTUK STABILISASI BADAN JALAN HUTAN Rahardjo S Suparto; S Sutopo
Jurnal Penelitian Hasil Hutan Vol 3, No 3 (1986): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1986.3.3.13-18

Abstract

Among  the many known  stabilized methods  and materials that can be applied to improve forest  road stability,  latex is thought  of as one such material  that deserves trying.   This experiment  is to asses the possibility  of  using latex as a stabilizing  agent,The fol/owing   conclusions  are in order: Latex  can be used as stabilizing  agent for  clayey soils as subgrade  material.  A  4% latex content turned out to be effective  to keep swelling,  due to soaking  in water,  within a limit of 4,3%. Degree of compaction  has no significant  effect  of swell.  Degree of  compaction  and percentage  of  latex  content  has significant  effect  on bearing capacity.  Latex  may  be recommended   as an alternative  material for  stabilizing subgrade soil in forest  road construction.
Co-Authors Maman M Idris Rahardjo S Suparto