Page 15 - May June 2016 Vol 34 No1
P. 15
culvert that allows the city to locate a structural defect, utility SAVE THE DATE Memphis
encroachment, or storm sewer connection from benchmarks
located along the length of the culvert without having to enter the TCAPWA
confined space. This approach represents a time saving and safe & SWANA
solution to managing the mile long asset with the City’s system.
2016 Annual Conference
Although only a preliminary evaluation, it became clear that
a prioritization would be required to identify which structural Nov. 8-10
defects and utility encroachments posed the highest risk for
failure due to the complexity of the culvert. An evaluation of Sheraton
each structural defect and each utility encroachment or other Memphis
obstruction was performed. Each structural observation or Downtown Hotel
defect was assigned a probability of failure and consequence of & Cook
failure used to obtain a risk level from 1-25, allowing the City to Convention
better plan for confined space entry, perform condition-driven
maintenance and repair, and respond to emergencies related to Center
the function of the culvert. The system will also assist the City
in determining the criticality of each defect and developing an
inspection schedule and a time frame for performing condition-
driven maintenance or repair.
Utility encroachments were also assigned a probability of
failure using the same numbering system as the structural
defects. Each connection to the culvert was also identified and
documented in the process. By cataloguing the connections to
the culvert, the City of Kingsport will have a current record of
all pipes. This allows for improved monitoring of stormwater
discharge to the culvert. Other advantages include updating
storm sewer maps, and identifying possible illicit discharges to
the culvert and storm sewer system.
This project prescribed the “holistic” approach to infrastructure
management. It captures key information about water, sewer,
stormwater and even transportation infrastructure, an approach
that will allow the City improved planning and efficiency for
condition driven maintenance of all utilities along the culvert
alignment.
An LDA inspector determining
the risk of hydraulic failure
due to clogging.
View online at tnpublicworks.com 15
encroachment, or storm sewer connection from benchmarks
located along the length of the culvert without having to enter the TCAPWA
confined space. This approach represents a time saving and safe & SWANA
solution to managing the mile long asset with the City’s system.
2016 Annual Conference
Although only a preliminary evaluation, it became clear that
a prioritization would be required to identify which structural Nov. 8-10
defects and utility encroachments posed the highest risk for
failure due to the complexity of the culvert. An evaluation of Sheraton
each structural defect and each utility encroachment or other Memphis
obstruction was performed. Each structural observation or Downtown Hotel
defect was assigned a probability of failure and consequence of & Cook
failure used to obtain a risk level from 1-25, allowing the City to Convention
better plan for confined space entry, perform condition-driven
maintenance and repair, and respond to emergencies related to Center
the function of the culvert. The system will also assist the City
in determining the criticality of each defect and developing an
inspection schedule and a time frame for performing condition-
driven maintenance or repair.
Utility encroachments were also assigned a probability of
failure using the same numbering system as the structural
defects. Each connection to the culvert was also identified and
documented in the process. By cataloguing the connections to
the culvert, the City of Kingsport will have a current record of
all pipes. This allows for improved monitoring of stormwater
discharge to the culvert. Other advantages include updating
storm sewer maps, and identifying possible illicit discharges to
the culvert and storm sewer system.
This project prescribed the “holistic” approach to infrastructure
management. It captures key information about water, sewer,
stormwater and even transportation infrastructure, an approach
that will allow the City improved planning and efficiency for
condition driven maintenance of all utilities along the culvert
alignment.
An LDA inspector determining
the risk of hydraulic failure
due to clogging.
View online at tnpublicworks.com 15
