A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
An early focus on structural use of processed rather than round timber resulted in an underestimation of the structural advantages of retaining the natural form of small-diameter round timber. In the round and tapered form, timbers are not susceptible to the strength-reducing effects of diving grain and exposed juvenile wood. Fiber continuity around knots on the surface of a debarked log rarely exhibits the stress concentration and fracture propagation commonly seen in disrupted grain around knots in lumber. Symmetry of material properties about the centroidal axis in a round timber improves the efficacy of standard section property equations derived for uniform isotropic materials. Ignoring these benefits and comparing the strength of round and processed timbers solely on the basis of section property, the round section has from two to four times the bending load design capacity of any standard-sized processed timber that could be sawn from it.
An early focus on structural use of processed rather than round timber resulted in an underestimation of the structural advantages of retaining the natural form of small-diameter round timber. In the round and tapered form, timbers are not susceptible to the strength-reducing effects of diving grain and exposed juvenile wood. Fiber continuity around knots on the surface of a debarked log rarely exhibits the stress concentration and fracture propagation commonly seen in disrupted grain around knots in lumber. Symmetry of material properties about the centroidal axis in a round timber improves the efficacy of standard section property equations derived for uniform isotropic materials. Ignoring these benefits and comparing the strength of round and processed timbers solely on the basis of section property, the round section has from two to four times the bending load design capacity of any standard-sized processed timber that could be sawn from it.
Strength of Small-Diameter Round and Tapered Bending Members
2005
7 pages
Report
No indication
English
Forestry , Bending , Strength(Mechanics) , Taper , Propagation , Fibers , Exposure(General) , Trees , Equations , Lumber , Stress concentration , Wood , Continuity , Symmetry , Isotropism , Fracture(Mechanics) , Capacity(Quantity) , Structural properties , Loads(Forces)
Application of small-diameter round timber as structural members in light frame construction
| DOAJ | 2022
Application of small-diameter round timber as structural members in light frame construction
| Taylor & Francis Verlag | 2022
Shear strength of tapered I-shaped steel members
| Online Contents | 2015
Shear strength of tapered I-shaped steel members
| Elsevier | 2015
The bending strength of round timber
| Engineering Index Backfile | 1928