Gabarro

Tatajuba

Scientific name: Bagassa guianensis Aubl.; B. tiliaefolia R. Ben.

Geographic origin: South America

Tatajuba
Description

  • Sapwood: cream-coloured.
  • Heartwood: yellow to dark brown with the light effects.
  • Fiber: Straight, generally intertwined.
  • Grain: medium size to rough.
  • Characteristic defects: Growth tensions

Capacity of being impregnated

  • Sapwood: Medium capacity of being impregnated
  • Heartwood: Low capacity of being impregnated

Mechanization

  • Sawing process: ordinary difficulties arise from hardness and the possible irritations produced by its powder. Risk of deformations due to internal tensions that produce radial quartering despieces radiales.
  • Drying process: Medium to high speed. Low risk of deformation and crack formation.
  • Planing process: Difficulties arise from hardness and risk of repelling on pieces of intertwined fibers. Slow mechanisation is recommended
  • Gluing process: No difficulties.
  • Nailing and screwing process: pre-drilling is recommended due to hardness.
  • Finish: No particular difficulties arise

Physical properties

  • Apparent density at 12% humidity 795 kg/m3 heavy wood
  • Dimensional stability
  • - Volumetric contraction coefficient 0.35 % stable wood.
  • - Relation between contractions 1.45% no tendency to deformity
  • Hardness (Chaláis-Meudon) 6.5 hardwood

Tatajuba
Mechanical properties

  • Resistance to static flexion 1,350 kg/cm2
  • Elasticity module 180,000 kg/cm2
  • Resistance to compression 780 kg/cm2

Tatajuba
Observations

Tatajuba