Title page for ETD etd-01212003-155154


Type of Document Master's Thesis
Author Toothman, Adam James
Author's Email Address atoothma@vt.edu
URN etd-01212003-155154
Title Monotonic and Cyclic Performance of Light-Frame Shear Walls with Various Sheathing Materials
Degree Master of Science
Department Civil Engineering
Advisory Committee
Advisor Name Title
Dolan, James Daniel Committee Co-Chair
Easterling, William Samuel Committee Co-Chair
Loferski, Joseph R. Committee Member
Keywords
  • fiberboard
  • gypsum
  • overturning anchors
  • hardboard
  • monotonic and cyclic loading
Date of Defense 2003-01-08
Availability unrestricted
Abstract
The racking performance of light-frame shear walls subjected to monotonic and cyclic loading is the focus of this thesis. The sheathing materials investigated are oriented strandboard (OSB), hardboard, fiberboard, and gypsum wallboard. The objectives of this study were to (1) obtain and compare performance characteristics of each sheathing material; (2) compare the effects of monotonic loading versus the cyclic loading response; (3) investigate the contribution of gypsum in walls with dissimilar sheathing materials on opposite sides of the wall; and (4) study the effects of using overturning anchors. The monotonic tests, which incorporated the use of hold-downs, were performed according to ASTM E564. Half of the cyclic tests were performed with hold-downs, and half were performed without hold-downs. The cyclic tests were performed according to the recently adopted cyclic testing procedure ASTM E2126.

A total of forty-five walls were tested with various configurations. The size of the walls was 1.2 x 2.4m (4 x 8ft). Two tests were performed with each sheathing material subjected to each type of loading: monotonic, cyclic with hold-downs, and cyclic without hold-downs. Two tests were then performed with OSB, hardboard, or fiberboard on one side of the wall and gypsum on the other side of the wall to study the effects of using dissimilar sheathing materials on the shear walls. The OSB and hardboard exhibited similar performance, and were the strongest of the four sheathing materials. Fiberboard performed better than gypsum, but worse than OSB and hardboard. In general, the performance indicators decreased when the walls were subjected to cyclic loading. The contribution of gypsum to walls with hold-downs was significant, but was not linearly additive. The use of hold-downs had a large effect on the performance of the walls. All shear wall performance indicators decreased when hold-downs were not included, with an average reduction of 66% in the peak load.

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  Filename       Size       Approximate Download Time (Hours:Minutes:Seconds) 
 
 28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access 
  AppendixA-Monotonic.pdf 780.86 Kb 00:03:36 00:01:51 00:01:37 00:00:48 00:00:04
  AppendixB-Cyclic_HoldDowns.pdf 1.06 Mb 00:04:55 00:02:32 00:02:13 00:01:06 00:00:05
  AppendixC-Cyclic_noHoldDowns.pdf 926.16 Kb 00:04:17 00:02:12 00:01:55 00:00:57 00:00:04
  THESIS.pdf 3.20 Mb 00:14:47 00:07:36 00:06:39 00:03:19 00:00:17
  Vita.pdf 50.04 Kb 00:00:13 00:00:07 00:00:06 00:00:03 < 00:00:01

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