This report presents results of an investigation conducted to develop placement tolerances for dowels at concrete pavement joints. A theoretical analysis of dowel misalignment was attempted. The purpose of the analysis was to compute restraint stresses induced in the concrete pavement for different levels of dowel misalignment. However, because of the complexity of correctly incorporating the three dimensional nature of dowel misalignment, the theoretical analysis was not completed. The effect of dowel misalignment was then investigated in the laboratory by conducting pull out tests on sections of concrete slabs incorporating a joint and dowels with different levels of misalignment. Test results are presented in this report. Test results indicate that pull out loads were relatively low for dowel misalignment levels of less than 1 inch per 18 inch length of dowel bars and a maximum joint opening of 0.25 Inches. Because of the limited amount of laboratory data, no recommendations are made to establish new acceptable levels of dowel misalignment.
Decades ago, the U.S. Army introduced an Aeronautical Design Standard that defined Handling Qualities Requirements for Military Rotorcraft, ADS-33E-PR...
A series of studies on the effectiveness, feasibility, and costs of composting as a means of managing animal mortalityremoved from roadways has been c...
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