Televise
Process by which a sewer line or lateral is inspected with a closed-circuit television camera.
Tensile Strength
The pulling stress in psi that is required to elongate a given specimen to the breaking point.
Tensile Strength At Yield
The measured tensile stress required to initiate permanent deformation in a sample under the conditions described in ASTMAmerican Society of Testing and Materials; technical organization formed for the development of standards on characteristics and performance of materials, products, systems and services, and the promotion of related knowledge. D 638.
Test Medium
The fluid or gas inside the main being tested.
Thermal Conductivity
The Thermal conductivity is the property of a material to conduct heat. It is evaluated primarily in terms of Fourier’s Law for heat conduction. Heat transfer occurs at a lower rate across materials of low thermal conductivity than across materials of high thermal conductivity. These variables are mass, length, time, and temperature.