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EM-1110-1-1904 Settlement Analysis

Author(s): USACE
Publisher: USACE
Year: 1990
Links: PDF, USACE Publications
Subjects: Geotechnical, foundations
Size: 205 pages, 1.50 MB
EM-1110-1-1904 cover

This manual presents guidelines for calculation of vertical displacements and settlement of soil under shallow foundations (mats and footings) supporting various types of structures and under embankments.

This manual is intended as a guide for determining potential settlement and is not intended to replace the judgment of the design engineer on a particular project.




EM-1110-1-1804 Geotechnical Investigations

Author(s): USACE
Publisher: USACE
Year: 2001
Links: PDF, USACE Publications
Subjects: Geotechnical
Size: 449 pages, 25.2 MB
EM-1110-1-1804 cover

This manual establishes criteria and presents guidance for geotechnical investigations during the various stages of development for both civil and military projects. The manual is intended to be a guide for planning and conducting geotechnical investigations and not a textbook on engineering geology and soils exploration. Actual investigations, in all instances, must be tailored to the individual projects.

Geotechnical investigations are made to determine those geologic, seismologic, and soils conditions that affect the safety, cost effectiveness, design, and execution of a proposed engineering project. Because insufficient geotechnical investigations, faulty interpretation of results, or failure to portray results in a clearly understandable manner may contribute to costly construction changes, post-construction remedial work, and even failure of a structure, geotechnical investigations and subsequent reports are an essential part of all civil engineering and design projects.




EM-1110-2-1911 Construction Contol for Earth and Rock-Fill Dams

Author(s): USACE
Publisher: USACE
Year: 1995
Links: PDF, USACE Publications
Subjects: Construction, Dams, Materials
Size: 101 pages, 8.06 MB
EM-1110-2-1911 cover

The purpose of this manual is to present principles and methods for construction control of earth and rock-fill dams. This manual is a guide to construction and inspection of earth and rock-fill dams in those aspects that pertain to safe and satisfactory performance.




EM 1110-2-1902 Slope Stability

Author(s): USACE
Publisher: USACE
Year: 2003
Links: PDF, USACE Publications
Subjects: Geotechnical, Slope stability
Size: 205 pages, 6.10 MB
EM-1110-2-1902 cover

This engineer manual provides guidance for analyzing the static stability of slopes of earth and rock-fill dams, slopes of other types of embankments, excavated slopes, and natural slopes in soil and soft rock. Methods for analysis of slope stability are described and are illustrated by examples in the appendixes. Criteria are presented for strength tests, analysis conditions, and factors of safety. The criteria in this EM are to be used with methods of stability analysis that satisfy all conditions of equilibrium. Methods that do not satisfy all conditions of equilibrium may involve significant inaccuracies and should be used only under the restricted conditions described herein.

This manual is intended to guide design and construction engineers, rather than to specify rigid procedures to be followed in connection with a particular project.

Appendix A contains a list of Government and non-Government references pertaining to this manual. Each reference is identified in the text by either the designated publication number or by author and date.




EM-1110-2-1614 Design of Coastal Revetments, Seawalls and Bulkheads

Author(s): USACE
Publisher: USACE
Year: 1997
Links: PDF, USACE Publications
Subjects: Coastal engineering, Hydrology
Size: 115 pages, 1.79 MB
EM-1110-2-1614 cover.

This manual provides guidance for the design of coastal revetment, seawalls, and bulkheads.

In areas subject to wind-driven waves and surge, structures such as revetment, seawalls, and bulkheads are commonly employed either to combat erosion or to maintain development at an advanced position from the natural shoreline. Proper performance of such structures is predicated on close adherence to established design guidance. This manual presents important design considerations and describes commonly available materials and structural component. All applicable design guidance must be applied to avoid poor performance or failure. Study of all available structural materials can lead, under some conditions, to innovative designs at significant cost savings for civil works projects.




EM-1110-2-1420 Hydrologic Engineering Requirements For Reservoirs

Author(s): USACE
Publisher: USACE
Year: 1997
Links: PDF, USACE Publications
Subjects: Flood control, Hydrology, Hydropower, Water supply
Size: 115 pages, 0.80 MB
EM-1110-2-1420 cover.

This manual provides information on hydrologic engineering studies for reservoir projects. These studies can utilize many of the hydrologic engineering methods described in the manuals listed in paragraph 1-4. Hydraulic design of project features are not included here; they are presented in a series of hydraulic design manuals.

This manual is divided into four parts. Part 1 provides basic hydrologic concepts for reservoirs . Reservoir purposes and basic hydrologic concerns and methods are presented. Part 2 describes hydrologic data and analytical methods. Part 3 covers storage requirements for various project purposes, and the last, Part 4, covers hydrologic engineering studies.




Why Slope in HEC-14 Riprap Calculator?

06 April 2018

Hi,

I was wondering how the riprap apron design values are calculated since they seem to include the slope value which does not appear in the HEC-14 equation from Fletcher and Grace (1972).

Regards,

Simon

Plainwater response:

The culvert slope is accounted for implicitly through the normal depth, when flow is supercritical. The culvert diameter is adjusted (as shown below), which results in the median rock diameter being adjusted for slope.

The following equation (Fletcher and Grace, 1972) is recommended for circular culverts:

D50 = 0.2⋅D(Q/(√g⋅D2.5))4/3(D/TW) (10.4)

where,

  • D50 = riprap size, m (ft)
  • Q = design discharge, m3/s (ft3/s)
  • D = culvert diameter (circular), m (ft)
  • TW = tailwater depth, m (ft)
  • g = acceleration due to gravity, 9.81 m/s2 (32.2 ft/s2)

Tailwater depth for Equation 10.4 should be limited to between 0.4D and 1.0D. If tailwater is unknown, use 0.4D.

Whenever the flow is supercritical in the culvert, the culvert diameter is adjusted as follows:

D’ = (D + yn)/2 (10.5)

where,

  • D’ = adjusted culvert rise, m (ft)
  • yn = normal (supercritical) depth in the culvert, m (ft)

Thanks,

Norm




Great Site!

02 April 2018

I just happened across your site while designing some rock slope protection for a stream restoration project in the Bay Area. I work for a consulting firm called FlowWest (www.flowwest.com). You should update the about site with your info and get some credit!

Thanks,

Colin

Plainwater response:

Colin,

Thanks for the compliments!

I started this site about a year ago, for my own personal benefit, as I was tired of trying to remember where to find relevant online information quickly. I am a practicing Civil Engineer in the San Francisco Bay Area, California, specializing in water resources, with some work in general site development, grading and structural design. I also have some experience in the Caribbean and Russia.

I see your company is also in the San Francisco Bay Area. Your website looks great and your staff look like they are in tune with company objectives. The projects you work in are quite challenging, but important, in the Bay Area. I hope the entire world will one day undertake such projects.

Please let me know if there is anything specific you would like me to address on this website,

Norm




EM 1110-2- 1415 Hydrologic Frequency Analysis

Author(s): USACE
Publisher: USACE
Year: 1993
Links: PDF, USACE Publications
Subjects: Hydrology
Size: 149 pages, 5.03 MB
EM-1110-2-1415 cover

This manual provides guidance and procedures for frequency analysis of: flood flows, low flows, precipitation. water surface elevation, and flood damage.

Frequency estimates of hydrologic, climatic and economic data are required for the planning, design and evaluation of flood control and navigation projects. The text illustrates many of the statistical techniques appropriate for hydrologic problems by example. The basic theory is usually
not provided, but references are provided for those who wish to research the techniques in more detail.

The techniques described herein are taken principally from “Guidelines for Determining Flood Flow Frequency” (46 – Water Resources Council, “Guidelines for Determining Flood Flow Frequency,” Bulletin 17B, Hydrology Committee, Washington, D.C., March 1982), “Statistical Methods in Hydrology” (1 – Beard, L. R., “Statistical Methods in Hydrology,” U.S. Army Corps of Engineers, Sacramento, CA, January 1962), and “Hydrologic Frequency Analysis” (41 – U.S Army Corps of Engineers, “Hydrologic Frequency Analysis,” Volume 3 of Hydrologic Methods for Water Resources Development, the Hydrologic Engineering Center, Davis, CA, April 1975).




EM-1110-2-1100 Coastal Engineering Manual

Author(s): USACE
Publisher: USACE
Year: 2002 – 2015
Links: Part I, Part II, Part III, Part IV, Part V, Part VI, Appendix A,  USACE Publications
Subjects: Coastal engineering
Size: 84 pages, 7.97 MB (Part I), 623 pages, 22.1 MB (Part II), 477 pages, 9.87 MB (Part III), 233 pages, 24.0 MB (Part IV), 674 pages, 16.7 MB (Part V), 771 pages, 25.4 MB (Part VI), 96 pages, 0.28 MB (Appendix A).
Coastal Engineering Manual cover

The purpose of the Coastal Engineering Manual (CEM) is to provide a comprehensive technical coastal engineering document. It includes the basic principles of coastal processes, methods for computing coastal planning and design parameters, and guidance on how to formulate coastal flood studies, shore protection, and navigation projects.

The CEM is divided into two major subdivisions: science-based and engineering based. The science subdivision is further divided into three parts. The first part, “Coastal Hydrodynamics,” leads the reader from the fundamental principles of wave theory and ocean wave generation through the process of wave transformation as the wave form approaches and reacts with the shore including water-level variations and currents. The second part, “Coastal Sediment Processes,” addresses longshore and cross-shore transport as well as shelf, and wind transport processes. The third part, “Coastal Geology,” covers geomorphology, coastal classification, and morphodynamic processes on sandy shores.

The engineering-based subdivision is oriented toward a project-type approach, rather then the individual structure design and is divided into two parts. The first one, “Coastal Planning and Design,” provides information on the design process and selection of appropriate type of solution to various coastal problems. The second part, “Design of Coastal Project Elements,” provides engineering guidance on materials, fundamentals of design, and reliability.

The first four parts of the CEM and an appendix were issued in 30 April 2002. These included:

Part I, “Introduction”
Part II, “Coastal Hydrodynamics”
Part III, “Coastal Sediment Processes”
Part IV, “Coastal Geology”
Appendix A, “Glossary”

The engineering-based subdivision is oriented toward a project-type approach and is divided into two parts. Part V, “Coastal Project Planning and Design,” was published separately on 31 July 2003. The text and figures provide information on the design process and selection of appropriate types of solution to various coastal problems. Part VI, “Design of Coastal Project Elements,” which provides engineering guidance on materials, fundamentals of design, and reliability, was published on 28 September 2011.