In general for both wall constructions simulation results tended to point to the exterior of the stud
in the Lightweight Wood Frame (LWF) and Cross Laminated Timber (CLT) construction cases to
be the area most at risk, specifically toward the exterior surface of the stud. Generally the total
Moisture Content (MC) of the stud decreased to an acceptable level within the simulation period
however the exterior surface appeared to remain at relatively high of moisture content level for
significant periods of time. The presence of wood strapping covering the exterior face of the stud
seemed to exacerbate the situation. If a support system for the cladding can be designed that does
not rely on wood strapping or covers a minimum area of the stud the performance of this critical
area could be improved. If the initial moisture content of the wood materials could be reduced
before close up the performance would also be improved for all locations that did not show an
increase in moisture content and the RHT index in the second year, at least with respect to
computer modelling. This work however was not in scope of the work.
Journal of Sustainable Architecture and Civil Engineering
Cross-laminated timber is a structural material, which successfully used for structural purposes during the last years. The material is environmentally friendly and decreases CO2 emissions. Cross-laminated timber possesses a decreased level of anisotropy in comparison with solid and glued timber. It is significant for structural units working in bending. So, cross-laminated timber panels are considered as an object of investigation. Design methodology for cross-laminated timber panels subjected to flexure was presented. The methodology is based on LVS EN1995-1-1 and laminated plate theory. The presented methodology was tested experimentally and analytically. Behavior and mechanical properties of cross-laminated timber are analyzed for case of static loading. Two panels with thickness 95mm consisting from three layers were tested in laboratory. Freely supported panels with span equal to 2m, which is loaded by the uniformly distributed load was a design scheme of considered panels. The panel’s width was equal to 1m. Analytical FEM design method, which is based on the using of computational program ANSYSv14 and RFEM5.0, was checked by the experiment. The comparison of stresses acting in the edge fibers and vertical displacements shows that the considered design methodology can be used for engineering calculations. The result difference changes in limits to 30%.
One of the tasks in the project, Wood and Wood-Hybrid Midrise Buildings, was to
develop further information and data for use in developing generic exterior wall systems
for use in mid-rise buildings using either lightweight wood frame or cross-laminated
timber as the structural elements. This report describes a standard full-scale exterior wall
fire test conducted on May 22, 2012 on a simulated cross-laminated timber (CLT) wall
assembly with an attached insulated lightweight wood frame assembly protected using
gypsum sheathing. The test was conducted in accordance with CAN/ULC-S134 .
This paper deals with the seismic behaviour of timber-glass systems. A series of experiments was performed on the shaking table of the IZIIS institute in Skopje, Macedonia. One and two story full scale structures were subjected to a series of ground moti...
A computer aided numerical model for the simulation of the in-plane bending strength of CLT beams is presented. The model uses the Monte-Carlo-Method to generate mechanical characteristics of board lamellae and is suitable for the investigation of statis...
There is a need of more advanced analysis for studying how the long-term behaviour of glued laminated timber structures is affected by creep and by cyclic variations in climate. A beam theory is presented able to simulate the overall hygro-mechanical and...
Cross-laminated timber (CLT) is a building system based on the use of massive, multi-layered solid wood panels. Although CLT as a construction system has been successful in Europe, only a handful of CLT projects have been built in the U.S. This manuscript presents the results from qualitative research, carried out with the objective of assessing the market potential and barriers to the adoption of CLT in the U.S. Insights from national and international experts were collected using semi-structured interviews. Topics included perceived benefits and disadvantages of CLT as a construction system, major barriers to its adoption in the U.S., and level of awareness about CLT among the architecture community.