Public reporting burden for the collection of information is estimated to average 1 hour per resp... more Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number.
The Friendship Trail Bridge is the current name of the old Gandy Bridge which carried westbound t... more The Friendship Trail Bridge is the current name of the old Gandy Bridge which carried westbound traffic across Old Tampa Bay until 1995. It was designed to H20 truck loading and was constructed in 1956. The 2.6-mile long bridge has 274 spans, of which 252 are low-level 48ft spans. The typical 48ft span consists of a 30ft 7in wide low-level bridge deck supported by four 3ft 4in deep post-tensioned concrete girders that act compositely with the 7in thick deck slab and are spaced 8ft 6in apart. The four girders are each post-tensioned with four 1 1/8in diameter, Grade 160 post-tensioning (PT) bars. Two of these bars are straight and located in the bottom flange, while the other two have a parabolic profile. Partial-depth post-tensioned diaphragms tie the girders together at third points (16ft on center). The girders resist shear load through the parabolic tendons and do not have additional shear reinforcement.
... estimated to range from 120 mph (55.7 m/s) to 160 mph (74.2 m/s) that exceeded the 114-130 mp... more ... estimated to range from 120 mph (55.7 m/s) to 160 mph (74.2 m/s) that exceeded the 114-130 mph (52.9-60.3 m/s) design wind velocity for Charlotte County ... Reinforced masonry is the most widely used building material with wood trusses sheathed with plywood used for roofing. ...
34th Annual Frontiers in Education, 2004. FIE 2004., 2004
Recent statistics indicate a declining population of undergraduate engineering students that cont... more Recent statistics indicate a declining population of undergraduate engineering students that continue toward advanced engineering degrees. This steady downturn in the number of graduate engineering students has fueled fears that the future of the nation's manufacturing and high technology industry will be damaged by a severe shortage of skilled engineers unless urgent steps are taken to halt and reverse the decline. In response, The College of Engineering (CoE) at the University of South Florida implemented an internal Research Experience for Undergraduates (REU) initiative designed to provide the student with a valuable research encounter. What has resulted is an important retention in the number of engineering undergraduate students enrolling in our graduate program following their REU experience and a systematic approach to integrate a large number of undergraduate students into the research efforts of the college. In this paper we describe our experience and provide guidance for other interested institutions to implement this initiative. Our initial results show that 64% of our graduates continued toward graduate engineering degrees as a direct result of their research experience.
This report summarizes findings from a 24-month study in which the performance of cathodic protec... more This report summarizes findings from a 24-month study in which the performance of cathodic protection systems for substructures of two interstate bridges was remotely monitored. The two bridges# 860050 and# 860054 are located on the “Alligator Alley” toll ...
International Journal for Numerical and Analytical Methods in Geomechanics, 1996
The majority of currently available analytical tools to predict ground stresses due to impact are... more The majority of currently available analytical tools to predict ground stresses due to impact are based on linear spring-dashpot dynamic models. Although these simple models adequately represent stiff ground possessing linear visco-elastic behaviour, they suffer from two ...
Dynamic replacement (DR) is a relatively new ground-modification technique that has been used suc... more Dynamic replacement (DR) is a relatively new ground-modification technique that has been used successfully to stabilize organic soil deposits by replacing the organic soil with sand columns. A full-scale DR field study was conducted in order to assess its effectiveness on Florida organic soils. A computer-based quality control system was developed using data-acquisition-management techniques to evaluate the degree of improvement of the organic soil layer at a given stage of treatment. One of the DR drop locations was instrumented in order to select technical criteria such as the print spacing and the number of blows per print for effective DR implementation, and to facilitate monitoring of the improvement of soil properties. The new quality control system evaluates the effects of treatment by computing the dynamic settlement modulus (DSM) from the impact acceleration data collected during the treatment period, This paper presents the results obtained from the pilot study and their subsequent use in establishing evaluation criteria for the test programme. It is also shown how the DSM-based treatment criteria are in agreement with those obtained from conventional methods. Hence, it is concluded that with the use of the quality control system presented, the implementation of any DR programme can be effectively monitored.
Public reporting burden for the collection of information is estimated to average 1 hour per resp... more Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number.
The Friendship Trail Bridge is the current name of the old Gandy Bridge which carried westbound t... more The Friendship Trail Bridge is the current name of the old Gandy Bridge which carried westbound traffic across Old Tampa Bay until 1995. It was designed to H20 truck loading and was constructed in 1956. The 2.6-mile long bridge has 274 spans, of which 252 are low-level 48ft spans. The typical 48ft span consists of a 30ft 7in wide low-level bridge deck supported by four 3ft 4in deep post-tensioned concrete girders that act compositely with the 7in thick deck slab and are spaced 8ft 6in apart. The four girders are each post-tensioned with four 1 1/8in diameter, Grade 160 post-tensioning (PT) bars. Two of these bars are straight and located in the bottom flange, while the other two have a parabolic profile. Partial-depth post-tensioned diaphragms tie the girders together at third points (16ft on center). The girders resist shear load through the parabolic tendons and do not have additional shear reinforcement.
... estimated to range from 120 mph (55.7 m/s) to 160 mph (74.2 m/s) that exceeded the 114-130 mp... more ... estimated to range from 120 mph (55.7 m/s) to 160 mph (74.2 m/s) that exceeded the 114-130 mph (52.9-60.3 m/s) design wind velocity for Charlotte County ... Reinforced masonry is the most widely used building material with wood trusses sheathed with plywood used for roofing. ...
34th Annual Frontiers in Education, 2004. FIE 2004., 2004
Recent statistics indicate a declining population of undergraduate engineering students that cont... more Recent statistics indicate a declining population of undergraduate engineering students that continue toward advanced engineering degrees. This steady downturn in the number of graduate engineering students has fueled fears that the future of the nation's manufacturing and high technology industry will be damaged by a severe shortage of skilled engineers unless urgent steps are taken to halt and reverse the decline. In response, The College of Engineering (CoE) at the University of South Florida implemented an internal Research Experience for Undergraduates (REU) initiative designed to provide the student with a valuable research encounter. What has resulted is an important retention in the number of engineering undergraduate students enrolling in our graduate program following their REU experience and a systematic approach to integrate a large number of undergraduate students into the research efforts of the college. In this paper we describe our experience and provide guidance for other interested institutions to implement this initiative. Our initial results show that 64% of our graduates continued toward graduate engineering degrees as a direct result of their research experience.
This report summarizes findings from a 24-month study in which the performance of cathodic protec... more This report summarizes findings from a 24-month study in which the performance of cathodic protection systems for substructures of two interstate bridges was remotely monitored. The two bridges# 860050 and# 860054 are located on the “Alligator Alley” toll ...
International Journal for Numerical and Analytical Methods in Geomechanics, 1996
The majority of currently available analytical tools to predict ground stresses due to impact are... more The majority of currently available analytical tools to predict ground stresses due to impact are based on linear spring-dashpot dynamic models. Although these simple models adequately represent stiff ground possessing linear visco-elastic behaviour, they suffer from two ...
Dynamic replacement (DR) is a relatively new ground-modification technique that has been used suc... more Dynamic replacement (DR) is a relatively new ground-modification technique that has been used successfully to stabilize organic soil deposits by replacing the organic soil with sand columns. A full-scale DR field study was conducted in order to assess its effectiveness on Florida organic soils. A computer-based quality control system was developed using data-acquisition-management techniques to evaluate the degree of improvement of the organic soil layer at a given stage of treatment. One of the DR drop locations was instrumented in order to select technical criteria such as the print spacing and the number of blows per print for effective DR implementation, and to facilitate monitoring of the improvement of soil properties. The new quality control system evaluates the effects of treatment by computing the dynamic settlement modulus (DSM) from the impact acceleration data collected during the treatment period, This paper presents the results obtained from the pilot study and their subsequent use in establishing evaluation criteria for the test programme. It is also shown how the DSM-based treatment criteria are in agreement with those obtained from conventional methods. Hence, it is concluded that with the use of the quality control system presented, the implementation of any DR programme can be effectively monitored.
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