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Managing Infiltration Inflow In Wastewater Collection Systems (1998), Sharon Rollins Jul 1998

Managing Infiltration Inflow In Wastewater Collection Systems (1998), Sharon Rollins

MTAS Publications: Full Publications

An overview of I/I problems caused by ground water and surface or rainwater.

Validating A Vegetative Filter Strip Performance Model, Puneet Srivastava, Thomas A. Costello, Dwayne R. Edwards, James A. Ferguson Jan 1998

Validating A Vegetative Filter Strip Performance Model, Puneet Srivastava, Thomas A. Costello, Dwayne R. Edwards, James A. Ferguson

Biosystems and Agricultural Engineering Faculty Publications

Vegetative filter strips (VFS) reduce losses of nutrients, solids, and other materials from land area treated with fertilizers and manures. A number of models are available that simulate nutrient and sediment transport in VFS. While VFS effectiveness is considered to depend on lengths of pollutant source area and VFS areas, few published studies have tried to validate these models using variable pollutant source area and VFS area. The objective of this study was to validate an event-based nutrient transport model (Chaubey et al., 1995) that simulates soluble nutrient transport in VFS. This model links three sub-models: modified Green-Ampt infiltration, non-linear …

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Development Of A Field Procedure To Measure The Airtightness Of Wall Construction Elements Of Houses, Grenville K. Yuill, David Yuill Dec 1997

Development Of A Field Procedure To Measure The Airtightness Of Wall Construction Elements Of Houses, Grenville K. Yuill, David Yuill

David Yuill

Whole-house tests were developed to compare the airflow resistance of several different materials used to seal the walls of a house at the outer surface. These airflow resistances were measured in field installations and include the effects of interactions with adjacent materials and assemblies. The materials tested were housewrap fiberboard and foam sheathings, extruded polystyrene foam sheathing with the edges taped, extruded polystyrene sheathing with the edges untaped, and caulking and foaming the inside of the wall cavity. The comparisons were between different wall materials installed in sequence in the same house. In this way, any inherent differences in house …