Memorias de investigación
Communications at congresses:
Procedure for Estimating the Physical and Mechanical Properties of Existing Timber Structures, Applied to an Historic Building in Cava De San Miguel, Madrid, Spain.
Year:2019

Research Areas
  • Civil engineering,
  • Artistic historical patrimony conservation

Information
Abstract
Physical and mechanical properties of the timber structure of a seven-story building from the end of 18th century, located in Madrid, Spain, were estimated using nondestructive techniques. These consisted of stress wave measurements and probing tests based on needle penetration depth and drilling residue collection, to estimate the modulus of elasticity, modulus of rupture and density. The structure consists on timber framed brick walls and heavy timber floors with mortar filling. For the development of the inspection and data collection a protocol based on previous research works has been defined. First, the wood species were identified as Pinus sylvestris L. or Pinus nigra Arnold ssp. salzmannii (Dunal) Franco and Pinus pinaster Ait. Measurements were taken in five areas of floors and in eight areas of framed walls, distributed between the third and sixth floors. In each of these samples, detailed measurements of at least three pieces were taken. The Time-of-Flight were measured over three distances in each piece, and the punctual measurements for the estimation of density were taken in three cross-sections of the piece. Mean values of density and modulus of elasticity were estimated for each sample. Finally, it was proposed to adopt a mean value for joists and another slightly smaller for pillars. The characteristic value of bending strength was conservatively estimated from the previous values.
International
Si
Congress
21st International Nondestructive Testing and Evaluation of Wood Symposium
960
Place
Freiburgh im Breisgau, Alemania
Reviewers
Si
ISBN/ISSN
000-00-00-00000-0
Start Date
24/09/2019
End Date
27/09/2019
From page
473
To page
480
Proceedings: 21st International Nondestructive Testing and Evaluation of Wood Symposium. General Technical Report FPL-GTR-272. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory.
Participants

Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Construcción con Madera
  • Departamento: Ingeniería y Gestión Forestal y Ambiental