Papers by Erol Karacabeyli
Encyclopedia of Materials: Science and Technology, 2001
Structural Engineers, 2007
Wood is the most environmentally friendly building material.Shear walls play an important role in... more Wood is the most environmentally friendly building material.Shear walls play an important role in the wind and seismic resistance of low-rise wood-frame buildings.Fire-rated gypsum wallboard panels are normally sheathed on the framings of walls for fire-proofing.Although some building codes(e.g.Uniform Building Code) have provided methods for estimating elastic deflection of shear wall sheathed with single side wood structural panels,but no method is provided for shear walls sheathed on both sides.In this paper the 4-term deflection formula for single side wood structural panels shear walls was extended to shear walls sheathed on both sides only by changing the total load vs into the part load vp the virtual single-sided wood structural panel sheathed wall supported.It is shown that this method can give reasonable predictions compared with test results.
Journal of Structural Engineering-asce, Dec 1, 2013
AbstractShear walls provide the lateral resistance needed for light-frame wood structures to with... more AbstractShear walls provide the lateral resistance needed for light-frame wood structures to withstand earthquake and wind loads. When sheathed with wooden structural panels, shear walls can be strong, stiff, and ductile. This is a study on the effect of wood species and drying temperature of veneer on the suitability of plywood for use in shear walls resisting earthquake loads. The highest lateral nail strength values were obtained from plywood panels manufactured from black pine veneers dried at 160°C. Group C (black pine) showed the highest maximum load values and the greatest displacement at ultimate load, whereas Group A (Scots pine) showed the lowest maximum load values and the least displacement at ultimate load. The stiffness values (2.38, 2.52, and 2.28 for Groups C1, C2, and C3, respectively) in Group C were higher than those of the other groups. The results exceeded the values for standards described in National Design Specification for Wood Construction and ISO 16670 and also met the values in...
Structures Congress 2006, Oct 10, 2006
While there exists a relatively large body of technical information for the engineered design of ... more While there exists a relatively large body of technical information for the engineered design of wood-frame buildings to resist seismic ground motions, the quantitative assessment of seismic resistance of conventional houses built by prescriptive requirements is less well understood. Forintek Canada Corp., in collaboration with other research and industry partners, has embarked on a research project to address this topic. This paper will report on the first phase of this project, the seismic shake table tests of a full-scale wood-frame building. The two-storey specimen, 6 m x 6 m in plan, was built on the seismic shake table at Tongji University in Shanghai, China, according to Part 9 of the 1995 National Building Code of Canada and shaken uni-directionally in each of the two principal directions. Three different seismic table motions were applied at increasing peak ground motion amplitudes up to 0.40 and 0.50 g. The specimen was repaired after the above sets of seismic table motions, and successive runs were conducted for increased door openings. Measurements included specimen accelerations, displacements and anchorage forces. Static stiffness of the specimen was measured at low force levels, and natural frequencies were measured after each seismic loading stage by applying low-level random excitation. The results presented consist of the capacity spectra of the shake table tests, changes in specimen stiffness and natural frequencies with increasing seismic loading. These results and those from other recent shake table tests elsewhere will be compared with simplified engineering calculations based on codified values of strength, and on that basis preliminary conclusions will be drawn on the adequacy of the current code provisions and design guides in Canada and the USA for conventional wood-frame construction.
Forest Products Journal, May 1, 1993
Standards committees, lumber manufacturers, researchers, and structural engineers often need to i... more Standards committees, lumber manufacturers, researchers, and structural engineers often need to interrelate strength test results obtained within a range of time periods varying from a few seconds to several hours. Rate of loading (ROL) data collected at the Western Forest Products Laboratory of Canada and its successor Forintek Canada Corp., and the USDA Forest Service, Forest Products Laboratory, and from other ROL investigations were combined and analyzed. An overall mean trend relationship between stress level and logarithm of time to failure was established. This relationship can be used to adjust the strength of softwood lumber to account for ROL effect.
Canadian Journal of Civil Engineering, Oct 1, 1987
Results from theoretical and experimental studies on the strength of glulam rivet connections und... more Results from theoretical and experimental studies on the strength of glulam rivet connections under eccentric loading are presented. Two failure modes are studied: (1) rivet yielding in bending with simultaneous bearing failure of the wood under the rivet's shank and (2) wood failure around the rivet cluster. The latter is studied using brittle fracture theory and a finite element analysis of the stress distribution in the wood around the rivets.Experimental results are shown to compare well with theoretical predictions for failure loads and type of failure, and design guidelines are proposed. Key words: fasteners, wood connectors, glued-laminated, nails, timber engineering.
Structural Engineers, 2007
Wood is the most environmentally friendly building material.Shear walls play an important role in... more Wood is the most environmentally friendly building material.Shear walls play an important role in the wind and seismic resistance of low-rise wood-frame buildings.Fire-rated gypsum wallboard panels are normally sheathed on the framings of walls for fire-proofing.Although some building codes(e.g.Uniform Building Code) have provided methods for estimating elastic deflection of shear wall sheathed with single side wood structural panels,but no method is provided for shear walls sheathed on both sides.In this paper the 4-term deflection formula for single side wood structural panels shear walls was extended to shear walls sheathed on both sides only by changing the total load vs into the part load vp the virtual single-sided wood structural panel sheathed wall supported.It is shown that this method can give reasonable predictions compared with test results.
Canadian Journal of Civil Engineering, Feb 1, 1989
Canadian Journal of Civil Engineering, Apr 1, 1996
The 1994 edition of CSA (Canadian Standards Association) Standard 086.1 "Engineering design ... more The 1994 edition of CSA (Canadian Standards Association) Standard 086.1 "Engineering design in wood" includes, for the first time, specified strength and stiffness for design rated oriented strandboard (OSB). Design rated OSB panels are manufactured in accordance with the new CSA Standard 0452. In this paper, the results of the short-term (1–10 min) test data which led to the establishment of the three rating grades of Type 1 (standard) design rated OSB are presented. In addition, factors that may affect the classification such as panel thickness and orientation are discussed. Key words: OSB, waferboard, structural panels, wood.
Canadian Journal of Civil Engineering, 2003
Tests were carried out to determine the lateral resistance of bolted lumber-to-concrete connectio... more Tests were carried out to determine the lateral resistance of bolted lumber-to-concrete connections. Specimens were made of hemlockfir and sprucepinefir lumber and bolted to concrete blocks using anchor bolts. Three sizes of anchor bolts were used, with nominal diameters of 12.7 mm (1/2 in.), 15.8 mm (5/8 in.), and 19.1 mm (3/4 in.). The minimum strength of the connections loaded parallel to grain with a single bolt exceeds the characteristic strength specified in the 1994 edition of the Canadian Standards Association (CSA) standard O86.1 by a factor of 1.6 for 12.7 mm (1/2 in.) diameter bolts and 2.0 for 19.1 mm (3/4 in.) diameter bolts. Results on connections loaded perpendicular to grain showed that the 5th percentile strength of a connection with a single bolt was greater than the characteristic strength specified in the CSA standard by a factor of 1.42.5. The reasons for this underestimation of the strength values in the standard are attributed to a low estimate of the embe...
Journal of Structural Engineering-asce, Jul 1, 2007
Journal of Performance of Constructed Facilities, Dec 1, 2014
Journal of Structural Engineering-asce, 2006
In this study, full-scale tests were conducted on unblocked shear walls with various sheathing de... more In this study, full-scale tests were conducted on unblocked shear walls with various sheathing details and reference blocked shear walls. A total of eight shear walls were tested. Monotonic and reversed cyclic displacement schedules were used as loading protocols. ...
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Papers by Erol Karacabeyli