Technical Letters

This ETL provides guidance and criteria for planning and design of runways and ancillary movement areas that support operations of Army wheeled UAS that are presently fielded. CLICK TO DOWNLOAD

This ETL provides guidance on the development of ice-affected stage frequency (SF) relationships and includes a literature review of advances made in the last two decades, as well as case studies illustrating the various methods.

This ETL provides updated technical criteria and guidance for evaluation of existing I-walls. General guidance for performing I-wall evaluation is provided along with detailed updates to existing guidance that focus on three I-wall performance items: the flood-side gap that was …Read More

This engineer technical letter establishes uniform guidance to describe methods, procedures, and formats for the preparation of construction cost estimates and construction contract modification estimates and total project costs.

This ETL provides guidelines to assure that landscape planting and vegetation management provide aesthetic and environmental benefits without compromising the reliability of levees, floodwalls, embankment dams, and appurtenant structures. It is important to note that all minimum guidelines presented herein …Read More

The purpose of this guidance is to provide an evaluation procedure to be followed to properly assess the seismic performance of existing USACE civil works powerhouses. This evaluation procedure is needed to identify those powerhouse superstructures that may need remediation …Read More

A series of navigational locks and dams along the nation’s inland waterways provide the ability to transport large tonnages of materials and goods efficiently over long distances.  These facilities are operated and maintained by the U.S. Army Corps of Engineers …Read More

This ETL will furnish guidance for the planning, design, and construction of foundations constructed in-the-wet for civil works structures. This document covers foundation types, subgrade preparation methods, test programs, positioning systems, installation techniques, quality control procedures, tolerances, case histories, and …Read More