Garuda - Garba Rujukan Digital

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

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

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.

FAKTOR EKSPLOITASI KAYU RAMIN (GONYSTYLUS BANCANUS MIQ) Marolop Sinaga; Dulsalam Dulsalam; Sampe Radja Simarmata
Jurnal Penelitian Hasil Hutan Vol 2, No 3 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

This investigation is carried out in the Central Kalimantan and West Kalimantan areas at three logging companies. The purpose of this investigation is to determine the exploitation factor for Gonystylus bancanus Miq.The knowledge of exploitation factor will help logging companies in the planning and control of production. The exploitation factor is the ratio of stem volume utilized to the stem volume that actually could be utilized. The latter represents part of the stem from its lowest point to its first branch. The part of stem considered utilized is that part which reached the log pond or other point for marketing.Exploitation waste in the areas of the forest companies observed ranges from 11.1% to 21.2%. This means that the exploitation factor ranges from 78.8% to 88.9%. The average of exploitation waste is 16.7%, consisting of parts from stumps 2.9% and parts from stems 13.8%, and hence the exploitation factor is 0.81.Exploitation waste can be kept at a minimum by better planning and improving skills of the workers. The exploitation factors among provincial regions and logging companies are not significantly. Among diameter class, however, they differ highly significantly. Therefore, the exploitation factor reported here should be used with great care.

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

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.

FAKTOR EKSPLOITASI JENIS MERANTI DI JAMBI, KALIMANTAN TENGAH DAN KALIMANTAN TIMUR Sampe Radja Simarmata; Dulsalam Dulsalam
Jurnal Penelitian Hasil Hutan Vol 2, No 1 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

The study was carried out in three locations in Jambi, Central Kalimantan and East Kalimantan. The number of forest companies observed in each location varies from 2 to 4 which were randomly selected.The study concludes that :The logging waste ranges from 16,3 % to 24,6 % of the clear bole volume. The average logging waste is 22,2 % consists of 12,2 % trimming waste and stumps, and 9 % defects.The exploitation factor ranges from 75,4 % to 83,7 % and the average is 0,80. This value was previously used for the observed locations.Diameter class has a highly significant effect (P<0,01) on exploitation factor. The exploitation factor proportionally increases with the log diameters.

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

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.

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

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.

VOLUME DAN KLASIFIKASI LIMBAH PENEBANGAN PADA BEBERAPA PENGUSAHAAN HUTAN DI ACEH DAN KALIMANTAN TIMUR Sampe Radja Simarmata; Dulsalam Dulsalam
Jurnal Penelitian Hasil Hutan Vol 2, No 2 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

A study on volume and classification of logging waste has been carried out in several forest companies in Aceh, North Sumatra, and East Kalimantan. Average wood waste volume at the logged over areas having diameter range from 10 to 39 cm with one meter in length or more were measured using the Brereton method.The results of this investigation reveal that:I. Logging waste volume in Aceh range from 26,46 to 29,08 m3/ha with an average of 27,85 m3/ha. In North Sumatra the value ranges from 22,94 to 38,66 m3/ha with an average of 28,90 m3/ha. It was formed that in East Kalimantan the logging waste ranges from22,00 to 81,94 m3/ha with an average of 52,38 m3/ha.2. The average wood waste at felling site was higher in the forest companies in East Kalimantan.3. Logging waste consists predominantly of those classified as 10 to 39 cm in diameter with 4 m length or more.4. The average volume of logging waste classifiedas 10 to 19 cm in diameter with 4 m length of more in Aceh, North Sumatra and East Kalimantan are consecutively 17,5 m3/ha,16,9 m3/ha and 24,9 m3/ha.

BEBERAPA MACAM PERLAKUAN TERHADAP PENYADAPAN AGATHIS SPP. UNTUK MENINGKATKAN BASIL GETAH Dulsalam Dulsalam; Ishak Surnantri
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.1985.2.2.10-12

An investigation into tapping of Agathis spp. using several methods has been carried out in Malang Forest District, Unit II Perum Perhutani, East Java, in 1983. The methods are designed to increase resin yield per unit time by manipulating tapping time, duration and covers and orientation.The investigation reveals that:1. Average resin production of the Agathis spp. for one week to two weeks times using of black and white plastic covers are respectively 9,85 gram/tree and 9,61 gram/tree. Without plastic cover the yield is 7, 76 gram/tree, shightly lower then when they are covered.2. The application of black plastic cover at tapping his significantly increased the yield up to 26,9% and those covered with white plastic of 23,8"7o. In both cases the resin yield is significantly higher compared to result obtained when tapping was carried out without cover.3. Average resin yield at tapping face oriented to in east and west from one to two weeks are 7,48 gram/tree and 11,26 gram/tree, respectively.4. The tapping face oriented to the west increases the resin yield up to 50,5% compared with that oriented to the east.5. The average resin yield for one and two week are respectively 8,57 gram/tree and 9,95 gram/tree. Duration of tapping of the Agathis spp. for one and two week does not effect the production level. Therefore 2 week tappin~ is not recomended.

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

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.

Title

Found 18 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 18 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 18 Documents
Search