Index Catalog // ScholarsArchive@OSU

Septic tank maintenance

Creator:: Moore, James A. (James Allan), 1939- and Oregon State University. Extension Service
Abstract:: The most common wastewater treatment system used in rural areas is the septic tank-soil absorption system. The septic tank removes settlable and floatable solids from the wastewater, and the soil absorption field filters and treats the clarified septic tank effluent. Removing the solids from the wastewater protects the soil absorption...
Resource Type:: Technical Report
Full Text:: Septic Tank Maintenance Archival copy. For current version

Why do septic systems fail?

Creator:: Oregon State University. Extension Service and Moore, James A. (James Allan), 1939-
Abstract:: In a properly operating septic system, the solid material in the sewage is settled out in a septic tank and stored until removal by pumping. The effluent from the tank is still sewage. It has a strong odor and is high in disease causing organisms. This effluent is treated and...
Resource Type:: Technical Report
Full Text:: septic system, the solid material in the sewage is settled out in a septic tank and stored until removal

Sewer system rehabilitation and the effectiveness of chemical grouting

Creator:: Whitaker, Todd B.
Abstract:: The City of Salem, Oregon has an active sewer main chemical grouting program for the control of groundwater infiltration into the sewer collection system. The effectiveness of this chemical grouting program is evaluated by a comparison to other effective chemical grouting programs for control of inflow/infiltration (I/I). The importance of...
Resource Type:: Masters Thesis

An economic evaluation of logging road maintenance

Creator:: Feeney, Daniel John
Abstract:: This thesis describes the results of a project conducted to determine the economics of forest road maintenance alternatives between periods of timber harvesting. An open road and a closed road alternative will be compared to the economics of clearcutting an entire area and obliterating the road system until reentry at...
Resource Type:: Masters Thesis

Flexural anchorage performance and strengthening on negative moment regions using near-surface mounted retrofitting in reinforced concrete bridge girders

Creator:: Barker, Laura
Abstract:: Large numbers of reinforced concrete deck girder (RCDG) bridges were built during the highway infrastructure boom of the 1950's. The advent of standardized deformed steel reinforcing bars during this time allowed for straight bar terminations in flexural tension regions. Designers of the time terminated reinforcing bars where they were no...
Resource Type:: Masters Thesis
Full Text:: patience and support are what led to the success of this project. I would like to thank the Oregon

Irrigation system maintenance, groundwater quality, and improved production

Creator:: Oregon State University. Extension Service and Selker, John S.
Abstract:: We first need to note that the soil nitrogen that makes plants green is primarily in the form of nitrate, and this nitrogen is accessible to plants specifically because it stays dissolved in the soil water. In a typical corn field, where the bulk of the roots are in the...
Resource Type:: Technical Report
Full Text:: Maintenance, Groundwater Quality, and Improved Production © 2004 Oregon State University This publication

Roadside strip clearing on fire protection roads for western Oregon

Creator:: Morrison, Vance L. and Oregon State Board of Forestry
Resource Type:: Technical Report
Full Text:: mileage of forest protection roads continues to in- :ease, the maintenance problem becomes more and more

Methods for strengthening flexural steel details in reinforced concrete bridge girders using a near-surface mounted retrofitting technique

Creator:: Amneus, Deanna
Abstract:: Many older reinforced concrete deck girder (RCDG) bridges contain straight bar terminations of flexural reinforcement. Common bridge design practice of the 1950s did not consider the additional demands on the terminated bars from shear and flexure. Moreover, more stringent code specifications and heavier permit trucks contribute to the insufficient ratings...
Resource Type:: Masters Thesis
Full Text:: , and wisdom are what led to the success of this project. I would like to thank the Oregon

An economic analysis of pavement damage caused by studded tires in Oregon

Creator:: Gray, Judith Ann
Abstract:: This report frames the debate over studded tires in terms of economic principles of marginal cost pricing and efficient resource allocation. In the absence of a user tax, the pavement damage caused by studded tires results in inefficient pricing because social costs associated with the damage are excluded from the...
Resource Type:: Masters Thesis
Full Text:: cover attributable maintenance costs would be in the neighborhood of 30% of the purchase price and

Reliability based bridge assessment using modified compression field theory and Oregon specific truck loading

Creator:: Daniels, Theresa Kathryn
Abstract:: Assessment of an existing bridge is needed when the structure exhibits signs of distress. Assessment practices require refinement in the calculation of loading and resistance while maintaining an acceptable level of risk, to minimize costs associated with repair, replacement and weight restrictions. Previous risk-based assessments evaluated the strength cases for...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Septic tank maintenance

Why do septic systems fail?

Sewer system rehabilitation and the effectiveness of chemical grouting

An economic evaluation of logging road maintenance

Flexural anchorage performance and strengthening on negative moment regions using near-surface mounted retrofitting in reinforced concrete bridge girders

Irrigation system maintenance, groundwater quality, and improved production

Roadside strip clearing on fire protection roads for western Oregon

Methods for strengthening flexural steel details in reinforced concrete bridge girders using a near-surface mounted retrofitting technique

An economic analysis of pavement damage caused by studded tires in Oregon

Reliability based bridge assessment using modified compression field theory and Oregon specific truck loading

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