Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references (leaves 162-164). Also available via the Internet.

Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references (leaves 64-67). Also available via the Internet.

Thesis (M.S.)--West Virginia University, 2001. / Title from document title page. Document formatted into pages; contains x, 127 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 89-92).

Full size wood joist floors were built and their frequencies were measured. Double tee-beam floors were built and also cut from the full size floors and their frequencies were measured. The floor joists investigated included: solid sawn, parallel chord floor trusses, and composite I -joists. The first natural frequency of each tee-beam floor was predicted after measuring the deflection under imposed loading. A design procedure is presented to predict the fundamental frequency of wood joist floors from tabulated material properties / Master of Science

The key issue addressed by this dissertation is that a number of heritage buildings undergoing the adaptive reuse are having building components such as timber structure, timber staircase which cannot meet the current fire safety regulation. Given this, it is imperative to begin researching the reasons why the timber component in heritage buildings cannot comply with the current statutory fire resistance requirement and find out the methods in preserving the timber component. The dissertation will focus on timber floor which is a highly important component in meeting the fire safety requirement as it provides the compartment separation to inhabit the rapid spread of fire and smoke in a building and as the same time it is usually a character defining element having heritage value. The dissertation will try to find out the different methods of conserving the timber floor of the heritage building under adaptive reuse with examples. The different methods will be evaluated based on the fire performance, statutory acceptance and conservation principles and the appropriate method will be matched to the adaptive reuse heritage buildings in Hong Kong. / published_or_final_version / Conservation / Master / Master of Science in Conservation

This thesis presents the results of an extensive study of several types of lateral bracing for solid-sawn and parallel-chord truss floor systems. Three solid-sawn floor bracing systems were evaluated: X-bridging, full-depth solid blocking, and finally, post-tensioned solid-blocking. Five different truss bracing systems were investigated: bottom-chord bracing, steel X-bracing, strong-back bracing, and the bracing combinations of X-plus bottom-chord bracing, and strong-back plus bottom chord bracing were evaluated. A total of seven, 4.9m x 4.9m floor specimens were constructed. Four 38 x 286 mm (2 x 12 inch nominal), solid-sawn wood joist floors were constructed for evaluation of the solid-sawn bracing systems. Three 305 mm (12 inch) deep, bottom-chord bearing, metal plate connected, parallel-chord truss floors were constructed to evaluate the truss floor bracing systems. Both floor systems utilized joist/truss spacings of 610 mm (24 inches) on center, and were covered with 18.3 mm (23/32 inch) thick, tongue-in-groove, plywood sheathing. The bracing systems were evaluated at different live load levels and boundary conditions. The bracing systems were subjected to both static and dynamic loadings. The effect of the bracing systems were determined based on four parameters: one static, and three dynamic. The percent change in concentrated load carried by the loaded joist was used as the static test parameter. The effect, if any, of the bracing systems on the modal resonant frequencies, separation of frequencies, and damping characteristics of the floor systems, were used as dynamic parameters. Future research and design recommendations were given in the conclusion chapter. / Master of Science