Title page for ETD etd-12052000-153736


Type of Document Master's Thesis
Author Mujagic, Ubejd
URN etd-12052000-153736
Title Strength Calculation Model for Standoff Screws in Composite Joists
Degree Master of Science
Department Civil Engineering
Advisory Committee
Advisor Name Title
Easterling, William Samuel Committee Chair
Murray, Thomas M. Committee Member
Roberts-Wollmann, Carin L. Committee Member
Keywords
  • Composite Joists
  • Composite Floor Design
  • Standoff Screws
  • Shear Connectors
Date of Defense 2000-11-07
Availability unrestricted
Abstract
The objective of the research reported herein is to present a comprehensive evaluation of all available experimental data from push-out tests utilizing the ELCO Grade 8 standoff screws. The goal is to develop a strength prediction equation and determine reliability parameters compatible with the Load Factor Resistance Design (LRFD) procedure that would allow the use of this shear connector in design of composite floor systems.

The study considers results from push-out tests using this type of screw reported by Hankins et al. (1994), Alander et al. (1998), Webler et al. (2000), and Mujagic et al. (2000). Further, this study identifies the limitations in earlier approaches aimed at predicting the strength of standoff screws. An improved strength prediction model is developed that considers all applicable limit states and determines maximum strength of a connector. A reliability study was also conducted to derive strength reduction factors to be used in design. Parameters considered in the model include deck type and geometry, screw height, concrete compressive strength, top chord angle yield strength, and stand-off screw rupture strength. Results from strength prediction model were compared with results from composite joist tests.

Files
  Filename       Size       Approximate Download Time (Hours:Minutes:Seconds) 
 
 28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access 
  A_Cover_Page_and_Abstract.pdf 6.93 Kb 00:00:01 < 00:00:01 < 00:00:01 < 00:00:01 < 00:00:01
  B_Acknowledgements.pdf 5.73 Kb 00:00:01 < 00:00:01 < 00:00:01 < 00:00:01 < 00:00:01
  C_Table_of_Contents.pdf 7.14 Kb 00:00:01 00:00:01 < 00:00:01 < 00:00:01 < 00:00:01
  D_List_of_Figures.pdf 9.14 Kb 00:00:02 00:00:01 00:00:01 < 00:00:01 < 00:00:01
  E_List_of_Tables.pdf 7.68 Kb 00:00:02 00:00:01 < 00:00:01 < 00:00:01 < 00:00:01
  F_Chapter_1.pdf 206.87 Kb 00:00:57 00:00:29 00:00:25 00:00:12 00:00:01
  G_Chapter_2.pdf 136.22 Kb 00:00:37 00:00:19 00:00:17 00:00:08 < 00:00:01
  H_Chapter_3.pdf 214.73 Kb 00:00:59 00:00:30 00:00:26 00:00:13 00:00:01
  I_Chapter_4.pdf 83.78 Kb 00:00:23 00:00:11 00:00:10 00:00:05 < 00:00:01
  J_Chapter_5.pdf 17.14 Kb 00:00:04 00:00:02 00:00:02 00:00:01 < 00:00:01
  K_References.pdf 13.56 Kb 00:00:03 00:00:01 00:00:01 < 00:00:01 < 00:00:01
  L_Appendixes.pdf 182.44 Kb 00:00:50 00:00:26 00:00:22 00:00:11 < 00:00:01

Browse All Available ETDs by ( Author | Department )

dla home
etds imagebase journals news ereserve special collections
virgnia tech home contact dla university libraries

If you have questions or technical problems, please Contact DLA.