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Cubicación por Trozas

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Cubicación por Trozas

  1. 1. DENDROMETRÍATEMA 2.CUBICACIÓN POR TROZAS http://hmbEndeavour.blogspot.com Miguel Ángel Cogolludo AgustínResponsable de Suministro de la Fábrica ENCE de Pontevedra Prof. Asociado E.U.E.T. Forestales.
  2. 2. Cubicación por trozas• Para la cubicación de la madera se calcula la 18 suma del volumen de 16 cada una de las trozas 14 12 que componen el árbol. 10 Para ello, distintos 8 autores han asemejado http://hmbEndeavour.blogspot.com 6 las trozas a distintas 4 formas geométricas. 2 0 -0,4 -0,2 0 0,2 0,4
  3. 3. Fórmulas geométricashttp://hmbEndeavour.blogspot.com
  4. 4. SMALIAN vs HUBERÁrea de un paralelogramo = bh •Smalian da el área del trapecio superior •Huber la del trapecio inferior •Huber < REAL < Smalian S1/2 http://hmbEndeavour.blogspot.com
  5. 5. Estimación de defectos• Los defectos en las trozas pueden reducir de manera importante la cantidad de producto que un aserradero puede obtener. Caso 1: Defecto interior http://hmbEndeavour.blogspot.com Caso 2: Fl echa mayor de 5 cm M Caso 3: Extrem o desvi ado del eje nota: sed =diámetro en punta delgada
  6. 6. Destinos principales de productos http://hmbEndeavour.blogspot.com
  7. 7. Destinos principales de productos Pontevedra 2004MADERA DE EUCALIPTO MADERA DE PINOEucalyptus globulus Pinus pinaster, Pinus radiata largo diámetro largo diámetroCELULOSA FINSAchips 2-2,5 >7-<65 trituración/desfibrado 2-2,5 TODOScaracterísticas poca curvatura característicasFINSA LIGNOTOCKtrituración/desfibrado 2-2,5 TODOS desfibrado 2-2,5 >8-<25características características poca curvatura, muy verde CONSULTAR derramaje a ras, silvestris NONEFAB FINSAdesenrollo 2,7 >35-<100 desenrollo 2,5 >35características características http://hmbEndeavour.blogspot.comASERRADERO ASERRADEROtabla 2,6 >40-<80 tabla 2,5 >20características característicasBATEA ASERRADEROmaestras 30-32 35-40 palets 2,5 >18características palos de 6 Tm 10 entre testas características
  8. 8. Estimación de defectoshttp://hmbEndeavour.blogspot.com
  9. 9. Reglas madereras• La regla maderera de este tipo más conocida es la de Scribner (1846).• Una ligera variante la Scribner decimal C, es una de las mas usadas actualmente en los E.E.U.U. http://hmbEndeavour.blogspot.com• Entre las reglas de formula una de las mas exactas es la Costeros Internacional debida a Clark en 1906

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