Download HEC-RAS - Archive

Download Highways in the River Environment (PDF File)
File Size: 14353014 bytes
File Date: Fri Sep 22 06:22:53 2006

In the United States, the average annual damage related to hydraulic problems at highway facilities on the Federal-aid system is $40 million. Damages by streams can be reduced significantly by considering channel stability. The types of river changes to be carefully considered relate to:

1. lateral bank erosion
2. degradation and aggradation of the streambed that continues over a period of years, and
3. natural short-term fluctuations of streambed elevation that are usually associated with the passage of floods

This PDF Technical Document will cover many issues on highways in the river environment including: sediment transport, natural manmade causes of waterway responses, stream stabilization (bed and banks), computer applications, and countermeasures. Case histories of typical manmade and natural impacts on waterways are analyzed.

Download Geosynthetic Design and Construction Guidelines (PDF File)
File Size: 62104071 bytes
File Date: Thu Jul 24 09:20:46 2008

This is the document entitled "Geosynthetic Design and Construction Guidelines", FHWA HI-95-038. This manual was prepared to enable the Highway Engineer to correctly identify and evaluate potential applications of geosynthetics as an alternative to other construction methods and as a means to solve construction problems. With the aid of this text, the Highway Engineer should be able to properly design, select, test, specify, and construct with geotextiles, geocomposite drains, geogrids, and related materials in drainage, sediment control, erosion control, roadway, and embankment on soft soils applications.

Download Bridge Inspection Document (PDF File)
File Size: 11143471 bytes
File Date: Fri Aug 18 23:45:51 2006

This is the document entitled "Underwater Inspection of Bridges", November 1989, FHWA DP-80-1. The purpose of the manual is to provide guidelines for underwater bridge inspection, acquaint those responsible for bridge safety with underwater inspection techniques, and briefly present methods of repair for commonly found defects.

Download Bridge Components Evaluation and Repair Document (PDF File)
File Size: 28186732 bytes
File Date: Thu Jul 24 09:20:03 2008

This is the document entitled "Underwater Evaluation and Repair of Bridge Components", FHWA DP-98-1. This document describes a training course covering the topics of the status of bridge inspection programs, mechanisms of underwater deterioration, underwater condition surveys, underwater testing equipment, evaluation of deterioration on structures, and underwater repairs.

Download Erosion and Sediment Control Document (PDF File)
File Size: 18270298 bytes
File Date: Fri Aug 18 23:08:52 2006

This is the document entitled "Best Management Practices for Erosion and Sediment Control", FHWA FLP-94-005. The purpose of this manual is to provide guidance in preventing erosion and controlling sediment on highway construction projects. It addresses the selection of erosion and sediment control measures and the development of erosion control plans. Construction and inspection of the measures are presented for each practice.

Download Pumping Station Manual (PDF File)
File Size: 15073941 bytes
File Date: Fri Sep 22 06:33:38 2006

This manual is entitled "Manual for Highway Storm Water Pumping Stations", FHWA IP-82-17, Volumes 1 and 2, October 1982. This manual provides guidelines, criteria and specifications for highway storm water pumping stations. It includes discussion of pumps, motors, engines, electrical systems and construction.

Download Culvert Inspection Manual (PDF File)
File Size: 22110421 bytes
File Date: Thu Jul 24 09:21:05 2008

This is the document entitled "Culvert Inspection Manual", FHWA IP-86-2. The manual provides procedures for conducting and documenting culvert inspections with specific guidelines for inspecting and evaluating the major hydraulic and structural components of culverts. It also includes discussions on the hydraulic, structural, and durability performance of culverts and information on personnel qualifications, equipment, and safety procedures for conducting culvert inspections.

Download Inlet and Culvert Structural Design Manual (PDF File)
File Size: 9866751 bytes
File Date: Thu Jul 24 09:19:43 2008

This is the document entitled "Structural Design Manual for Improved Inlets and Culverts", FHWA IP-83-6. This manual provides structural design methods for inlets having specific configurations that improve hydraulic flow in channels. Design methods and typical details for the component structures found in improved inlets, such as wing walls, headwalls, aprons, and the inlet itself, are also presented in this manual.

Download Bridge Hydraulic Problem Countermeasures Manual (PDF File)
File Size: 25310248 bytes
File Date: Thu Jul 24 09:21:46 2008

This is the document entitled "Countermeasures for Hydraulic Problems at Bridges. Vol I Analysis and Assessment", FHWA RD-78-162. This document contains a survey of stream hazards to bridges, provides a statistical analysis of frequency of problems, and rates the performance of rigid and flexible revetments, and flow control measures. It also evaluates measures incorporated into the design of the bridge.

Download Bridge Hydraulic Problem Countermeasures Manual (PDF File)
File Size: 87769765 bytes
File Date: Fri Aug 18 23:33:26 2006

This is the document entitled "Countermeasures for Hydraulic Problems at Bridges. Vol II Case Histories for Sites 1-283", FHWA RD-78-163. This document is a collection of detailed case histories.

Download Culvert Repair Practices Manual (PDF File)
File Size: 35122860 bytes
File Date: Thu Mar 20 13:01:40 2003

This is the document entitled "Culvert Repair Practices Manual Volume I", FHWA RD-94-096. This manual provides information, guidelines, and alternatives for the cost-effective repair of culverts. It provides an overview of current practices for maintenance, repair, rehabilitation, retrofit upgrading, and replacement of highway culverts. It gives detailed information on appropriate related procedures. It supplies guidelines for selecting the most cost-effective procedures for resolving current problems to provide increased serviceability and life expectancy of culverts.

Download Culvert Repair Practices Manual (PDF File)
File Size: 14022936 bytes
File Date: Thu Jul 24 09:21:30 2008

This is the document entitled "Culvert Repair Practices Manual Volume II", FHWA RD-95-089. This document contains the appendixes of the Culvert Repair Practices Manual.

Download Hydraulic Flow Resistance Factors Document (PDF File)
File Size: 5985440 bytes
File Date: Thu Jul 24 09:19:15 2008

This is the document entitled "Hydraulic Flow Resistance Factors for Corrugated Metal Conduits", FHWA TS-80-216. This document presents methods which allow a corrugated metal conduit designer to estimate resistance factors for all available corrugation shapes and methods of manufacture.

Download Box Culvert Document (PDF File)
File Size: 10944871 bytes
File Date: Fri Sep 22 04:24:10 2006

This is the document entitled "Evaluation of the Flood Risk Factor in the Design of Box Culverts", FHWA RD-74-11. This report is an engineering analysis procedure to reduce flood-related damage to highways on a sound probabilistic basis, considering hydrologic hydraulic, and economic factors.

Download Grate Inlet Design Document (PDF File)
File Size: 9049601 bytes
File Date: Fri Sep 22 04:13:22 2006

This is the document entitled "Hydraulic Characteristics of Two Bicycle-safe Grate Inlet Designs", FHWA RD-74-77, November 1974. This study tested two design concepts for bicycle-safe grate inlets for hydraulic performance and compared them to more traditional designs. The two concepts are the 45°-tilted bar and the so called "Massachusetts Cascade" designs.

Download Stream Channel Gradation Document (PDF File)
File Size: 9239333 bytes
File Date: Fri Sep 22 04:16:30 2006

This is the document entitled "Stream Channel Degradation and Aggradation: Causes and Consequences to Highways", FHWA RD-80-038, June 1980. This report describes a research effort on stream-channel aggradation and degradation. Gradation changes are long-term channel bed elevation changes which extend for long distances along the streambed. This report describes the extent of problems nationwide, examines the causes of gradation changes, documents case studies where highway crossings have been affected, and summarizes methods available for recognizing the potential for bed level changes.

Download Relocated Stream Channels Document (PDF File)
File Size: 50267777 bytes
File Date: Fri Sep 22 04:55:56 2006

This is the document entitled "Stability of Relocated Stream Channels", FHWA RD-80-158, March 1981. This study documents with case histories the performance of a representative variety of natural stream channels that have been relocated or otherwise altered for purposes of bridge or highway construction. It identifies critical factors associated with stability or lack of stability of altered channels. It includes discussion of the physical effects of erosion-control measures, fish habitat structures, and structures such as bridges and culverts.

Download Stream Hazards Document (PDF File)
File Size: 31828021 bytes
File Date: Fri Sep 22 04:39:09 2006

This is the document entitled "Methods for Assessment of Stream-Related Hazards to Highways and Bridges", FHWA RD-80-160, March 1981. This report is a reference of techniques for evaluating stream-related hazards to highways and bridges. It provides insight into the application of remote sensing and slope stability evaluation. It also extends the perspective of crossing design to include the entire river system and the effects of land use changes. The report provides a procedure that permits evaluation of the relative stability of a river and identification of hazards that can affect a crossing.

Download Scour Document (PDF File)
File Size: 6802619 bytes
File Date: Fri Sep 22 03:33:25 2006

This is the document entitled "Scour at Culvert Outlets in Mixed Bed Materials", FHWA RD-82-011, September 1982. This report described a study to observe and analyze scour and erosion holes in noncohesive and cohesive material at culvert outlets and to formulate empirical design criteria for predicting scour hole geometry. It refines and extends techniques for predicting the dimensions of scour holes.

Download Streambank Stabilization Structures Document (PDF File)
File Size: 10718321 bytes
File Date: Fri Sep 22 03:42:52 2006

This is the document entitled "Design of Spur-type Streambank Stabilization Structures", FHWA RD-84-101, July 1985. A study of the applicability and design of spur-type flow-control and streambank stabilization structures has been conducted to establish design guidelines and other criteria for the use of spurs. Recommendations for the general application of spur-type structures are given in relation to function of the spur, the erosion mechanisms that are countered by spurs, the environmental conditions best suited for the use of spurs, and potential negative impacts produced by spurs. An introduction to the most common types of spurs is given, along with discussions of the factors most important to the design of specific spur types. Design guidelines for establishing spur permeability, the required extent of protection, spur length, spur spacing, spur orientation, spur height, spur crest profile, and the shape of the spur tip or head are presented.

Download Bridge Waterways Document (PDF File)
File Size: 7371857 bytes
File Date: Fri Sep 22 03:49:07 2006

This is the document entitled "Bridge Waterways Analysis Model: Research Report", FHWA RD-86-108, July 1986. This report describes WSPRO which is a digital model for water-surface profile computations.

Download Flexible Ditch Linings Document (PDF File)
File Size: 6032126 bytes
File Date: Fri Sep 22 04:07:19 2006

This is the document entitled "Performance of Flexible Ditch Linings", FHWA RD-86-114, September 1985. This document reports a series of tests to determine the performance of ten flexible ditch lining materials. The objectives of the tests were to determine the effect of the flexible liners on the germination and growth of grass and to determine the effectiveness of the liners to prevent erosion on highway channels until the establishment of vegetation.

Download Embankment Damage Document (PDF File)
File Size: 20417976 bytes
File Date: Fri Sep 22 04:03:41 2006

This is the document entitled "Development of a Methodology for Estimating Embankment Damage Due to Flood Overtopping", FHWA RD-86-126, March 1987. This document reports a study that conducted laboratory tests and developed a methodology to quantitatively determine embankment damage and assess protective measures. It collected literature and field data and conducted tests on embankment surfaces with and without protective measures. A computer model was developed to determine hydraulics of overtopping flow and associated erosion damage. This model was verified using field data and laboratory test results, and was utilized to generate charts for estimating embankment damage.

Download Concrete Block Revetment Systems Document (PDF File)
File Size: 13346465 bytes
File Date: Fri Sep 22 03:27:49 2006

This is the document entitled "Hydraulic Stability of Articulated Concrete Block Revetment Systems During Overtopping Flow", FHWA RD-86-199, November 1989. This report presents a study where the hydraulic characteristics and stability of articulated concrete block revetment systems in high-velocity overtopping flow were examined. Seventeen hydraulic tests were performed on five different revetment systems, including cable and uncabled installations. Relationships involving pressure, velocity, depth, and slope on the stability and resistance to flow are developed and presented.

Download Storm Water Runoff Disposal Manual (PDF File)

This is the document entitled "Underground Disposal of Storm Water Runoff", FHWA TS-80-218. This manual's purpose is to provide the information necessary to evaluate for feasibility, as well as to plan and design, surface and subsurface infiltration systems or combination systems that can be incorporated into the overall drainage scheme of a particular transportation facility, street system, or commercial development.

Download Urban Highway Drainage Document (PDF File)
File Size: 8037994 bytes
File Date: Fri Sep 22 07:23:47 2006

This is the document entitled "Design of Urban Highway Drainage", FHWA TS-79-225, August 1979.