Precast, Modular Construction for Water Impoundment Infrastructure

Precast, Modular Construction for Water Impoundment Infrastructure

Author: Peter Drown, Andrew Sanna, Norm Bishop
Conference: HydroVision 2017
Date: June 27-30, 2017

ABSTRACT
Physical civil construction is the largest single component of new hydropower development cost, from 40%-90% of total capital cost depending on the project size (HRF/ORNL, 2014). Risk associated with civil-related schedule and corresponding budget overruns for new projects are significant, and can be due to weather and river flood events, contracting delays, major equipment lead-times, and other factors caused by the lengthy civil and equipment installation construction periods. Precast concrete modular structures offers the potential to reduce these delays and costs by moving traditional on-site construction tasks to an off-site, controlled precasting location. The civil structure is built with modules using reinforced precast concrete, and transported to site where the modules are joined together to form a monolithic structure. The benefits of precast concrete have been well-proven in many other construction industries, including commercial and residential, bridges, parking garages, hospitals and prisons. Several U.S. hydropower facilities have utilized precast elements in powerhouse construction. French Development Enterprises, LLC (FDE) has developed the “French Dam” – an infrastructure technology that applies precast modules to construct powerhouses, dams, weirs and diversion structures. This paper examines the application of precast concrete modules as an alternative to conventional construction when applied to dams and diversion structures.

 

Download the full technical paper.

Download

Recent Insights

January 2024
Balancing Act: Water Usage Management Vital for a Sustainable Future
January 2024
A Difficult Balance Between Engineering, Environmental, Social and Economic Aspects
November 2023
Knight Piésold Commences with the ESIA for Haib Copper
November 2023
Insights from the Compilation and Critical Assessment of Breach and Runout Characteristics from Historical Tailings Dam Failures: Implications for Numerical Modelling
November 2023
Earthquake-induced Deformation Analysis of a TSF Undergoing Tailings Reprocessing
November 2023
Case Study: Approach to Determining the Risk Mitigation Priority of a Historic TSF in North America
October 2023
Data Management and Insights for Effective Tailings Storage Facility Management
October 2023
The Role of Sensitivity Analysis in Selecting Dam Breach Parameters
October 2023
Influence of Increased Confining Stress on Undrained Behavior of Tailings: A Case History at the Candelaria Mine
October 2023
The Re-use of Existing Bituminous Stabilised Materials for the Rehabilitation of National Route 7 - Case Study
September 2023
Transición energética para gerentes de mina
August 2023
Interview: Guillermo Barreda, Gerente General, Knight Piésold Perú
July 2023
Selection of Soil Shear Strength Parameters Based on Integrated In Situ Tests, Lab Tests and Numerical Calibration Approach
June 2023
Leveraging Knowledge and Experience of a Well-Formed Independent Tailings Review Board to Enhance Tailings Facility Safety
May 2023
Is the Implementation of Dry Stacking for Tailings Storage Increasing? A Southern African Perspective
February 2023
Canadian Consulting Engineer's Lifetime Achievement Awards: Jeremy Haile
February 2023
Geotechnical Characterization of Collapsible Salty Sands Subjected to Monotonic and Cyclic Loadings – A Case Study for Areas with High Seismicity
November 2022
Application of the 3D Limit Equilibrium Method in Tailings Dam Breach Analysis
November 2022
Evaluation of Tailings Behaviour for Dam Breach Assessments
November 2022
Tailings Improvement by Stress-Densification from Waste Rock Capping