This manual is the reference text used for the FHWA NHI courses No. 132042 and 132043 on Mechanically Stabilized Earth Walls and Reinforced Soil Slopes and reflects current practice for the design, construction and monitoring of these structures. This manual ...

<p>The primary goal of this report was to develop Load and Resistance Factor Design (LRFD) methods for slopes and retaining structures. Even though there is past research on LRFD of shallow foundations and piles, there are very few publications available on ...

Bridge approaches provide smooth and safe transition of vehicles from highway pavements to bridge structures. However, settlement of the bridge approach slab relative to bridge decks usually creates a bump in the roadway. The bump causes inconvenience to passengers ...

<p>The increased use of underground space for transportation systems and the increasing complexity and constraints of constructing and maintaining above ground transportation infrastructure have prompted the need to develop this technical manual. This FHWA ...

Team recommendations for U.S. implementation include developing a rational basis for bridge inspection frequency, guidelines for developing quality assurance/quality control procedures, illustrations and reference photos for manuals, and integrated inspection ...

<p>One of the most pressing needs for research in the geotechnical area is on the issue of the use of marginal soils (e.g. silts, soft rock, etc.) for fills and as backfill material for walls and bridge abutments. The lack of availability of higher quality ...

The primary goal of this report was to develop Load and Resistance Factor Design (LRFD) methods for slopes and retaining structures. Even though there is past research on LRFD of shallow foundations and piles, there are very few publications available on LRFD ...

<p>Although it is known that impact compaction tests are not appropriate for granular soils, these tests continue to be widely used. Excessive settlements frequently occur in granular soils where specified field compaction is based on Standard Proctor (ASTM ...

This manual presents the state-of-the-practice for design and construction of continuous flight auger (CFA) piles, including those piles commonly referred to as augered cast-in-place (ACIP) piles, drilled displacement piles, and screw piles. CFA pile types, ...

<p>This Reference Manual is intended principally to serve as a supplement to the Participant&rsquo;s Workbook for the FHWA&rsquo;s National Highway Institute Course on Load and Resistance Factor Design for Highway Bridge Substructures. The Reference Manual ...