Statutory Inspection of a Dam in Lac-Saguay, Quebec
Equinox Construction Services was mandated by the owner of dam X0005453 at Lac-Saguay to undertake a Statutory Inspection of the dam, including but not limited to the piers, the spillway, the toe of the dam, the access systems, the intake, the upstream impoundment and the downstream stretch.
Following this inspection, ECS prepared a Statutory Inspection Report which included, among other aspects, a description of how the inspection was carried out, ECS' observations documented through annotated photographs, recommendations with respect to the dam's current condition and status, and finally a preliminary estimate of the construction costs associated with the recommendations.
During the inspection, particular attention was given to elements such as Public Safety Around Dams, environmental protection measures, and structural defects identified in the reinforced concrete structure.
- Statutory dam inspection
- Dam condition assessment
- Visual inspection and documentation
- Structural concrete assessment
- Public safety around dams
- Environmental protection measures
- Maintenance and repair recommendations
- Preliminary repair cost estimating
- Dam condition attestation
Timeline
2023
Cost
Confidential
Professional fees
$3,500
The Challenge: Assessing a Dam Without Previous Inspection Records
One of the main challenges of the mandate was the absence of previous inspection records for dam X0005453. ECS was therefore required to establish an attestation of the dam's current condition based solely on the site inspection and available information, while developing recommendations for future maintenance and repair work.
The inspection required a comprehensive visual assessment of the dam and its associated components and systems. ECS reviewed the condition of the piers, spillway, toe of the dam, access systems, intake, upstream impoundment and downstream stretch, with observations documented through annotated photographs. Particular attention was given to the reinforced concrete structure and the identification of structural defects that could affect the dam's condition and future maintenance requirements.
The condition of the intake presented an additional challenge. The intake was significantly clogged, which restricted visibility and limited the precision of certain observations and recommendations. Despite this constraint, ECS incorporated the available findings into the overall condition attestation and recommendations, while also considering Public Safety Around Dams and environmental protection measures.
Intervention by Equinox Construction Services
Equinox Construction Services (ECS) carried out a site visit at dam X0005453 in Lac-Saguay to conduct a Statutory Inspection of the dam.
ECS documented its observations using annotated photographs and incorporated these findings into a Statutory Inspection Report. The report described how the inspection was conducted, documented the observed condition of the dam and identified recommended actions based on the findings.
ECS also prepared preliminary estimates of the construction and repair costs associated with the recommended interventions, along with an anticipated timeline for completing the proposed work.
As no previous inspection records were available, ECS was required to establish an attestation of the dam's current condition based solely on the findings of the inspection and to support this assessment with appropriate recommendations.
The intake was found to be heavily clogged, which restricted visibility and limited the accuracy of certain observations. This limitation was considered when evaluating the dam's condition and developing the recommendations.
Services Provided
- Site visit at dam X0005453 in Lac-Saguay
- Visual inspection of the dam and its various components
- Analysis of the health and current status of the dam's components and systems
- Assessment of public safety, environmental protection measures and structural defects
- Preparation of the Statutory Inspection Report
- Development of a list of recommendations
- Estimation of construction and repair costs, along with a timeline
- Attestation of the dam's current condition
Team
Additional Resources
Printable project sheet