This paper proposes a design framework for CFRP liners for concrete pressure pipes with different levels of degradation in an attempt to form the basis of a design standard. Design approach considers non-degraded, degraded, and severely degraded...
Abstract: An investigation of the stability of the roof of an 85-ft diameter cylindrical prestressed concrete wastewater treatment tank is presented. The roof of the tank is a very thick, shallow spherical dome. With a 1/16 rise to span ratio, 2...
Abstract: Buried, prestressed concrete cylinder pipelines (PCCP) are deteriorating in water utility infrastructure across the country. The use of liners that comprise carbon-fiber-reinforced polymers (CFRP) can provide numerous advantages,...
Abstract: This paper presents the results of analysis and evaluation of the seismic soil strains resulting from wave propagation or permanent ground deformation on sweeping bends in buried pipelines with bell and spigot joints. A finite element...
Engineers provide the best service to their clients by optimizing the cost of projects without affecting the quality or performance. Since buried pipe performance is the result of interaction of both the pipe and the surrounding soil embedment,...
Abstract: The identification and rehabilitation of circular prestressed concrete tanks to increase their service lives by implementing tested standards such as ANSI/AWWA D110 and ACI 372 is discussed. A prestressed concrete tank is mainly a...
Abstract: Environmental Protection Agency requirements for control of stormwater runoff are increasing the need to provide on-site stormwater storage as part of site development projects. Underground stormwater storage is one solution to this...
Abstract: Plastic pipe has been used for many years in applications to control surface water runoff by detention, retention, and infiltration. Review of deficiencies with available pipe geometries resulted in creation of a new product,...
Abstract: A finite-element model of a buried pipeline consisting of concrete pressure pipe segments and joints is developed for analysis of longitudinal effects resulting from pressure-induced thrust at a bend. The model accounts for longitudinal...
Abstract: The evaluation of cement mortar coatings on prestressed concrete cylinder pipes (PCCP) may include such techniques as petrographic examination, material testing, and environmental testing of soil and groundwater. Petrographic analysis...