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Articles 4 Documents
Search results for , issue "Vol 1, No 2 (1984): Jurnal Penelitian Hasil Hutan" : 4 Documents clear
SIFAT-SIFAT PAPAN PARTIKEL KAYU KELAPA Memed, Rozak; Sutigno, Paribotro; Sulastiningsih, I M
Jurnal Penelitian Hasil Hutan Vol 1, No 2 (1984): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (9951.723 KB) | DOI: 10.20886/jphh.1984.1.2.7-10

Abstract

This report  deals with the  laboratory  tests  on  the  properties of  particle board made  from  coconut  wood  and from  coconut wood with  hardwood bonded by urea formaldehyde. The  tests include board density, moisture  content, water absorption, thickness swelling and bending  strength.The  result  reveals that physical and  mechanical  properties of  particle boards  made  from  coconut wood  conform with FAO Standard.  The  properties  of  particle boards  made  from   coconut  wood mixture  with  hardwood in  the proportion of  1 : 1 which conform the  FAO  Standard are limited to density and water absorption. 
STABILISASI TANAH LIAT DENGAN KAPUR PADA KONSTRUKSI BADAN JALAN HUTAN DI PULAU LAUT Suparto, Rahardjo S; Sutopo, S
Jurnal Penelitian Hasil Hutan Vol 1, No 2 (1984): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (18152.856 KB) | DOI: 10.20886/jphh.1984.1.2.11-22

Abstract

Subgrade  construction is an important part in forest  road building,  Subgrade soils with a high clay content  could  not be used satisfactorily as forest  road construction material  unless it is treated  to increase its stability.  The improvement of the  physical characteristics of clay  soils  related  to  subgrade  construction  can  be achieved  by  mixing  lime  of certain proportion into   the soil. The purpose of this investigation  is to determine the amount  of lime required for subgrade stabilization  which  have high clay content  in Pulau Laut,  South  Kalimantan The investigation  reveals the following :1.  The  efective  amount   of  lime  stabilization of  soils  is 7 percent of  the dry  weight  of  the  soil, resulting  in the following  physical  properties  :-  Bearing capacity  is 167 kg/cm2 at air dry  condition,-  Percent  of swell is 2.3,-  Plasticity index  is 25.5,  and-  pH is 9.00.2.  Stabilization   with  7 percent  lime is most  effective  for use in forest  road subgrade containing  about  66% clay. 
PERCOBAAN PENDAHULUAN MENGGERGAJI BATANG KELAPA Rachman, Osly; Karnasudirdja, S
Jurnal Penelitian Hasil Hutan Vol 1, No 2 (1984): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4538.967 KB) | DOI: 10.20886/jphh.1984.1.2.1-5

Abstract

Fourteen   air  dry   logs  of   coconut   trunk   were  sawn  into   boards  and  squares of  varying  dimensions  following   a "sawing  around"   pattern   to  obtain   the  best  lumber  yield  from the hard outer portion of the trunk. A 43.16 percent yield was obtained.                                                                                                                                          The productivity  of  break down  saw based on  the optimum  feed  speed  of  8.67  meters  per  minute   was  0.0542 m3 per minute. Only saw blades hardened by stellite tipping are recommended for sawing coconut trunks. 
JENIS DAN BANYAKNYA KAYU YANG DIPAKAI DALAM KONSTRUKSI JALAN REL DI HUTAN RAWA PROPINSI RIAU Dulsalam, Dulsalam; Sianturi, Apul
Jurnal Penelitian Hasil Hutan Vol 1, No 2 (1984): 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.1984.1.2.23-28

Abstract

An  observation on  the  amount  and  species of  wood  used in rail-road  construction in the swamp forests has been carried out in the PT Alam Wanasaki and PT Tenaga Kampar  concession  areas both  located  in Riau.The observation  revealed  that  the wood  species  used in rail-road construction  at the PT Alam  Wanasaki area consist of 24 species  with  a volume  of  243 m3/km. Those  used at the PT Tenaga Kampar area  consist of 12 species comprising a volume  of  204 m3/km and  the species  used at  the PT Alam  Wanasaki area are mostly  helat  (Xylopia malayana Hooh .f.) with  a total  volume  of  71 m3/km. The same  is found  at the PT Tenaga Kampar  area using a total volume  of 58 m3/km. Other wood  species  used  in  rail-road construction in both  concession  areas consist  of a number  of  commercial  species.Wood  species  which  are  considered   suitable in  the  construction  of  rail-road in  the  swamp  forests  of  PT  Alam Wanasaki are  among  others: bintangur (Callophyllum .spp.), gelam   (Eugenia spp.), medang  (Litsea spp.),   menggeris (Koompassia  spp.), pelawan  (Tristania obovata  R.Br.), punak (Tetramerista glabra Miq.),  resak (Cotylelobium melanoxylon Pierre.),  tempurung (Baccaurea spp.), and  tembesu  (Fagraea spp.),  comprising  about 16%  of the  total  volume  used in the  construction.Wood species  selected  for  rail-road construction   at  the  PT  Tenaga Kampar  concession  area are: bintangur  (Callophyllum spp.),  medang  (Litsea  spp.), and punak  (Tetramerista glabra Miq.), comprising  32% of the total amount  of wood used in the  construction.Both  companies  made  efforts  to onlv  use durable  wood  species,  however,  such  species are scarce.  

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