Now showing items 11-20 of 498
Use of Ultimate Load Theories for Design of Drilled Shaft Sound Wall Foundations
(Virginia Tech, 1997-06-20)
A study was performed to investigate the factors that affect the accuracy of the procedures used by the Virginia Department of Transportation for design of drilled shaft sound wall foundations. Field load tests were ...
Effect of mixing intensity on polymer conditioning of sludges
(Virginia Tech, 1986-07-05)
Conditioning studies were conducted on several water and wastewater sludges using polymers to determine the effect of high-intensity mixing on floc formation and breakup. Mechanisms acting in particle coagulation were also ...
Utilization of Captor sponges to maintain nitrification and denitrification in BNR activated sludge at low aerobic MCRTs
(Virginia Tech, 1996-02-05)
The performance of Captor media integration into the aerobic zone of an activated sludge wastewater treatment system operated at low MCRTs was evaluated using a pilot scale Virginia Initiative Project (VIP) process. Two ...
Fundamental frequencies of I-joist, solid-sawn wood joist, and truss floors based on tee-beam modeling
(Virginia Tech, 1993)
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 ...
Design of a multi-span plate girder highway bridge using LRFD bridge specifications
(Virginia Tech, 1993-12-05)
<p>The design of the superstructure of a multi-span plate girder bridge was performed using the new AASHTOILRFD bridge specifications. The bridge was composed of three continuous spans of 100'-120'-100' designed to carry ...
Analysis and design of a triangular cross section truss for a highway bridge
(Virginia Tech, 1983-12-05)
Modeling the roof deck and determining its effect on the stability of a glulam timber dome
(Virginia Tech, 1990)
A finite element modeling and geometrically nonlinear static analysis of the top portion of a glued-laminated timber dome is presented. The modeling assumptions and analysis procedures are applied to a dome model whose ...
An investigation of capacity and delay of runway configurations using the SIMMOD simulation model
(Virginia Tech, 1990-08-01)
Introduction <p> Aviation delays are on the rise as a consequence of disproportionate growth of the air transportation demand. According to the Federal Aviation Administration (FAA) in fiscal year 1987, u. S. commercial ...