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Apul Sianturi
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BIAYA KONSTRUKSI DAN VOLUME KAYU PADA JALAN REL KAYU DAN REL BESI Dulsalam Dulsalam; Apul Sianturi
Jurnal Penelitian Hasil Hutan Vol 2, No 4 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4328.896 KB) | DOI: 10.20886/jphh.1985.2.4.19-23

Abstract

An investigation on construction cost and wood use in railroad tracks in swamp forests has been carried out at two companies located in West Kalimantan in 1983.The investigation arrives at the following conclusion:The construction of both wooden and steel railroad tracks uses 4 layers of sleepers. The difference between the two lies in the rails itself.The bearing capacity of steel railroad track ranges from 2 to 4 tons, while that of wooden railroad track from 10 to 15 tons.Construction cost of  wooden railroad tracks is lower than that of  steel railroad tracks,  i.e., Rp. 2.350.000.-/km and Rp. 11.483.000.-/km respectively. The volume of wood used in wooden and steel railroad tracks is 243 m3/km  and 241 m3/km respectively.The amounts of wood used between wooden railroad tracks and steel railroad tracks do not differ significantly. Among layer, however, they differ highly significantly.
PENGARUH INTENSITAS TEBANG BAYANG TERHADAP KELEMBABAN DAN DAYA DUKUNG JALAN HUTAN Dulsalam Dulsalam; Apul Sianturi
Jurnal Penelitian Hasil Hutan Vol 2, No 1 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2635.457 KB) | DOI: 10.20886/jphh.1985.2.1.15-17

Abstract

Road maintenance has  been generally  considered  as a  major  cost  component in  logging cost.  An  investigation on the  effect of  shade  felling  intensity  on  the  moisture  content  and  bearing  capacity of  forest road was carried  out at the PT  Wisma Lukita  forest  concession  area,  located  in South  Sumatera.  Shade  felling  at the  right and left  side of forest roads is considered to be a  factor  which  affects  roads quality.  It is said to affect soil moisture  in the forest road structure, which in  turn  affects its  bearing capacity.In this study, the  effect  of a set of five shade felling intencity levels were investigated,  starting at 21 percent up to 70 percent  with 10 percent increments. The  effect on  moisture  content turns out  to be significant, and set of  five felling intensity  levels caused  moisture  contents to vary from 8 percent  to 20 percent. The effect on bearing capacity  however, is non-significant.
KOMPOSISI JENIS KAYU YANG DIGUNAKAN DALAM KONSTRUKSI JALAN REL DI HUTAN RAWA SUMATERA DAN KALIMANTAN Dulsalam Dulsalam; Apul Sianturi
Jurnal Penelitian Hasil Hutan Vol 2, No 4 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4194.99 KB) | DOI: 10.20886/jphh.1985.2.4.24-27

Abstract

Data collected consist of the diameters and lengths of wood used in railroad construction in swamp forests of ten forest companies in Sumatera, and six in Kalimantan. Railroads in the swamp forests are different in construction compared to those in the teak forests, generally requiring four layers of sleepers.  This, of course, is due to the extremely low bearing capacity of the soil little is known about the problems of this type of railroad construction, primarily with regard to the quantity of wood required.The steps of collecting data were as follow:Selecting suitable forest companies in Sumatera and in Kalimantan to be surveyed.In each forest area 20 samples of 50 m rail track sections were drawn systematically.Diameters and lengths of logs within the sections were measured according to layers.The average amount of wood used in swamp forests railroad in Sumatera and Kalimantan are respectively 142 m3/km and 188 m3/km. The volume of wood used in every km of railroad between regions are significantly different, and those among forest companies very significantly.Wood used in every km of railroad construction and for layer of sleepers vary. The average of wood used for railroad construction of the 1st and 2nd layer in Sumatera are respectively 55 m3  /km and 87 m3/km.  Those in Kalimantan consist of four layers of sleepers, i.e.:   Ist, 2nd,  3rd and 4th layer from the  top-down,  averaging 32 m3lkm, 64 m3/km, 74 m3/km and 18 m3/km of wood used per layer respectively.
PENGANGKUTAN KAYU DENGAN TRUK DI KPH BOJONEGORO DAN SARADAN Apul Sianturi; Dulsalam Dulsalam
Jurnal Penelitian Hasil Hutan Vol 2, No 2 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2911.047 KB) | DOI: 10.20886/jphh.1985.2.2.13-16

Abstract

An observation on wood transportation by truck has been carried out in the Bojonegoro and Saradan Forest Districts.  Trucks are MercedesBenz, consistingof models rangingfrom 1970 to 1975.The annual operation days of truck at the Bojonegoro and Saradan Forest Districts are 147 and 193  days respectively. The average annual hauling capacity of trucks in Bojonegoro and Saradan is 14 964 ton­km per year and 41 145 ton­km per year respectively.The average hauling cost in Bojonegoro and Saradan is Rp.  300,­  per ton­km  and Rp.  107,­ per ton­km respectively.  This cost is broken down into the following components: Fuel, 9 percent; grease, 9 percent; spare parts,  55 percent; tyres,  23 percent; miscellaneous, 4 percent.
PRODUKTIVITAS ANGKUT TRUK DAN TRUK SEMI-TRAILER Apul Sianturi; Djaban Tinambunan
Jurnal Penelitian Hasil Hutan Vol 2, No 1 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2871.5 KB) | DOI: 10.20886/jphh.1985.2.1.1-3

Abstract

An investigation on log hauling by truck and semi-trailer truck has been carried out at 14 concession  areas in Sumatera and  5 concession  areas in South  Kalimantan in 1980  and  1981. The  investigation  comes to  the following conclussions :1.    Logging Companies in Riau, Jambi and South Sumatera  use poorly constructed forest roads without any graveling.2.    On the other  hand  those in South Kalimantan are relatively good  graveled  roads.3.    Effective  hauling  outputs of  trucks range from 91 to 361 m3km/round trip hour, with an average of 247 m3 km/round  trip hour, and those of semi-trailer  truck  from  265  to 841 m3 km/round  trip hour,  with an average of 494 m3 km/round  trip hour.There is pronounced linier relation  between hauling  distance and round trip time.
PENGARUH JUMLAH TENAGA PENDORONG TERHADAP KECEPATAN LORI PADA PENGANGKUTAN KAYU Apul Sianturi; Dulsalam Dulsalam
Jurnal Penelitian Hasil Hutan Vol 2, No 1 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1674.977 KB) | DOI: 10.20886/jphh.1985.2.1.13-14

Abstract

This  investigation  was carried out  in the: Padangan Forest  District,  Perum Perhutani   Unit II, East Java, employing crews of  various sizes, i.e., 4, 5 and 6 men to push the loaded  lorries.Lorry  speed  is influenced   by several factor, e.g.,  slope, crew size, team-work among  crew members. The influence  of crew size  on  lorry speed  turned  out  to  be insignificant. The average  speed of lorries  are 3.3 km/hour, 4.7 km/hour,  and 4.3 km/hour with standard error of 0.7 km/hour, 0,8 km/hour and  0,9 km/hour  for  4, 5 and  6 man, crew, respectively.
BIAYA KONSTRUKSI DAN VOLUME KAYU PADA JALAN REL KAYU DAN REL BESI Dulsalam Dulsalam; Apul Sianturi
Jurnal Penelitian Hasil Hutan Vol 2, No 4 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4328.896 KB) | DOI: 10.20886/jphh.1985.2.4.19-23

Abstract

An investigation on construction cost and wood use in railroad tracks in swamp forests has been carried out at two companies located in West Kalimantan in 1983.The investigation arrives at the following conclusion:The construction of both wooden and steel railroad tracks uses 4 layers of sleepers. The difference between the two lies in the rails itself.The bearing capacity of steel railroad track ranges from 2 to 4 tons, while that of wooden railroad track from 10 to 15 tons.Construction cost of  wooden railroad tracks is lower than that of  steel railroad tracks,  i.e., Rp. 2.350.000.-/km and Rp. 11.483.000.-/km respectively. The volume of wood used in wooden and steel railroad tracks is 243 m3/km  and 241 m3/km respectively.The amounts of wood used between wooden railroad tracks and steel railroad tracks do not differ significantly. Among layer, however, they differ highly significantly.
PENGARUH INTENSITAS TEBANG BAYANG TERHADAP KELEMBABAN DAN DAYA DUKUNG JALAN HUTAN Dulsalam Dulsalam; Apul Sianturi
Jurnal Penelitian Hasil Hutan Vol 2, No 1 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2635.457 KB) | DOI: 10.20886/jphh.1985.2.1.15-17

Abstract

Road maintenance has  been generally  considered  as a  major  cost  component in  logging cost.  An  investigation on the  effect of  shade  felling  intensity  on  the  moisture  content  and  bearing  capacity of  forest road was carried  out at the PT  Wisma Lukita  forest  concession  area,  located  in South  Sumatera.  Shade  felling  at the  right and left  side of forest roads is considered to be a  factor  which  affects  roads quality.  It is said to affect soil moisture  in the forest road structure, which in  turn  affects its  bearing capacity.In this study, the  effect  of a set of five shade felling intencity levels were investigated,  starting at 21 percent up to 70 percent  with 10 percent increments. The  effect on  moisture  content turns out  to be significant, and set of  five felling intensity  levels caused  moisture  contents to vary from 8 percent  to 20 percent. The effect on bearing capacity  however, is non-significant.
KOMPOSISI JENIS KAYU YANG DIGUNAKAN DALAM KONSTRUKSI JALAN REL DI HUTAN RAWA SUMATERA DAN KALIMANTAN Dulsalam Dulsalam; Apul Sianturi
Jurnal Penelitian Hasil Hutan Vol 2, No 4 (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.1985.2.4.24-27

Abstract

Data collected consist of the diameters and lengths of wood used in railroad construction in swamp forests of ten forest companies in Sumatera, and six in Kalimantan. Railroads in the swamp forests are different in construction compared to those in the teak forests, generally requiring four layers of sleepers.  This, of course, is due to the extremely low bearing capacity of the soil little is known about the problems of this type of railroad construction, primarily with regard to the quantity of wood required.The steps of collecting data were as follow:Selecting suitable forest companies in Sumatera and in Kalimantan to be surveyed.In each forest area 20 samples of 50 m rail track sections were drawn systematically.Diameters and lengths of logs within the sections were measured according to layers.The average amount of wood used in swamp forests railroad in Sumatera and Kalimantan are respectively 142 m3/km and 188 m3/km. The volume of wood used in every km of railroad between regions are significantly different, and those among forest companies very significantly.Wood used in every km of railroad construction and for layer of sleepers vary. The average of wood used for railroad construction of the 1st and 2nd layer in Sumatera are respectively 55 m3  /km and 87 m3/km.  Those in Kalimantan consist of four layers of sleepers, i.e.:   Ist, 2nd,  3rd and 4th layer from the  top-down,  averaging 32 m3lkm, 64 m3/km, 74 m3/km and 18 m3/km of wood used per layer respectively.
PENGANGKUTAN KAYU DENGAN TRUK DI KPH BOJONEGORO DAN SARADAN Apul Sianturi; Dulsalam Dulsalam
Jurnal Penelitian Hasil Hutan Vol 2, No 2 (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.1985.2.2.13-16

Abstract

An observation on wood transportation by truck has been carried out in the Bojonegoro and Saradan Forest Districts.  Trucks are MercedesBenz, consistingof models rangingfrom 1970 to 1975.The annual operation days of truck at the Bojonegoro and Saradan Forest Districts are 147 and 193  days respectively. The average annual hauling capacity of trucks in Bojonegoro and Saradan is 14 964 ton­km per year and 41 145 ton­km per year respectively.The average hauling cost in Bojonegoro and Saradan is Rp.  300,­  per ton­km  and Rp.  107,­ per ton­km respectively.  This cost is broken down into the following components: Fuel, 9 percent; grease, 9 percent; spare parts,  55 percent; tyres,  23 percent; miscellaneous, 4 percent.
Co-Authors Djaban Tinambunan Dulsalam Dulsalam