The use of heavier trucks demanded upgrading of a twenty-seven year old bridge in Winnipeg, Manitoba, Canada. Analysis of the precast prestressed concrete girders using the current AASHTO Code indicates a deficiency in the shear capacity. Shear strengthening using Carbon Fibre Reinforced Polymer (CFRP) sheets provides a low-cost solution by increasing the speed of construction and reducing traf...

The behavior of bridge bents under spatial loads was investigated to evaluate the suitability of the current office procedure of the Texas State Department of Highways and Public Transportation (TSDHP'I) for analyzing and designing slender concrete bridge bent columns. Two computer codes were developed for this purpose. The linear method of analysis uses the conventional direct stiffness method...

It has been argued that the AASHTO LRFD design code for maximum live loads on highway bridges is overly conservative. In an attempt to determine the level of conservativeness, if any, the writers developed a methodology incorporating real-time visual data collection from traffic cameras coupled with structural strain response of girder bridges. Average daily truck traffic along with frequency o...

In current AASHTO design practices, bridges are designed on an elemental basis. AASHTO code specifies that each structural element is to be designed for the loads it will experience during the life of the bridge. The calculated loads are enveloped to produce maximum loads. This approach, elemental design, is structurally sound, in general conservative, and has resulted in the design and constru...

Deep beams are commonly used in tall buildings, offshore structures, and foundations. According to many codes and standards, strut-and-tie model (STM) is recommended as a rational approach for deep beam analyses. This research focuses on the STM recommended by ACI 318-11 and AASHTO LRFD and uses experimental results to modify the strut effectiveness factor in STM for reinforced concrete (RC) de...

Tanah merupakan salah satu sumber daya alam yang sangat penting untuk mendukung keberhasilan pembangunan fisik infrastruktur. Sebelum mendirikan konstruksi bangunan terlebih dahulu harus dilakukan penyelidikan tanah. Jenis tanah dengan segala sifat teknis faktor dipertimbangkan dan mutlak sebelum struktur itu mulai dikerjakan dalam perencanaan suatu pondasi, agar tidak terjadi kegagalan pada ba...