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American Public Transportation Association Standards Development Program

A Program of the American Public Transportation Association APTA is a nonprofit international association of over 1,500 public and private member organizations including transit systems and commuter rail operators; planning, design, construction and finance firms; product and service providers; academic institutions, transit associations and state departments of transportation. APTA members serve the public interest by providing safe, efficient and economical transit services and products.

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http://www.geotechnicalinfo.com/angle_of_internal_friction.html

Angle of Internal Friction on the Geotechnical Information Website

https://www.minedesignwiki.org/index.php/Backfill_material

Backfill material - MineDesignWiki

Portland cement and g round granulated blast furnace slag (GGBFS), also referred to as s lag cement , are two principal binding agents that are used in the Canadian mining industry. In Europe, slag cement means a blend of Portland and GGBFS, while in North America slag cement refers to 100% GGBFS. Slag cement, however, is not available in all markets. At present, there are few slag grinding plants located in North America; therefore, volumes are low and distances from plant to mines can lead to costly transportation.

Office of Science and Technology

You can access our copy of the United States Coast Guard's (USCG) vessel data base and extract vessel characteristic, documentation, and ownership data (please read our data caveats page). This data base is updated on a monthly basis. Our query program only retrieves data about vessels which are craft that are 5 net tons or larger and are documented by the USCG. Craft less than 5 net tons ("boats") are numbered by individual states. Refer to our data caveats page for information about who collects vessel documentation data, the type of data collected and for the authorization and rationale for publishing these data. Contact the USCG Vessel Documentation Center for vessel title and lien information.

http://www.st.nmfs.noaa.gov/st1/CoastGuard/VesselByName.html

www.oregongeology.org/pubs/OG/OBv31n12.pdf

USGS Publications Warehouse

Calculating a Slope

http://geology.isu.edu/geostac/Field_Exercise/topomaps/slope_calc.htm

Determining the average slope of a hill using a topographic map is fairly simple. Slope can be given in two different ways, a percent gradient or an angle of the slope. The initial steps to calculating slope either way are the same. Decide on an area for which you want to calculate the slope (note, it should be an area where the slope direction does not change; do not cross the top of a hill or the bottom of a valley). Once you have decided on an area of interest, draw a straight line perpendicular to the contours on the slope. For the most accuracy, start and end your line on, rather than between, contours on the map.

www.wspgroup.com/upload/documents/PDF/SELLS/PM136-Metric Conversion.pdf

Quest Structures

This manual describes the development and use of response spectra for the seismic analysis of hydraulic structures. The manual provides guidance regarding how earthquake ground motions are characterized for design earthquakes and how they are then used in the process of seismic structural analysis and design. This manual is intended to be an introduction to the seismic analysis of concrete hydraulic structures. Engineer Manual EM 1110-2-6051 : Time History Dynamic Analysis of Concrete Hydraulic Structures This manual describes procedures for the linear-elastic time-history dynamic analysis and development of acceleration time-histories for seismic design and evaluation of concrete hydraulic structures. The manual provides guidance on the formulation and interpretation of the linear-elastic time-history dynamic analyses and on the development and application of earthquake input time-histories.

Laboratory Soils Testing CH 1-2, ENG Form 2086, ENG Form 2087, ENG Form 2088, ENG Form 2089, ENG Form 2090, ENG Form 2091, ENG Form 2092, ENG Form 3659, ENG Form 3835, ENG Form 3836, ENG Form 3837, ENG Form 3838, ENG Form 3839, ENG Form 3840, ENG Form 3841, ENG Form 3843, ENG Form 3844, ENG Form 3845, ENG Form 3846, ENG Form 3847, ENG Form 3848, ENG Form 3849, ENG Form 3850, ENG Form 3851, ENG Form 3852, ENG Form 3853, ENG Form 3854, ENG Form 3855, ENG Form 3856, ENG Form 3857, ENG Form 3858, ENG Form 4055, ENG Form 4056, ENG Form 4334, ENG Form 4663-R, ENG Form 4664-R, ENG Form 4665-R, ENG Form 4665A-R, ENG Form 4666-R, ENG Form 4667-R, ENG Form 4668-R

Engineering Manuals

Surveying

Tides

Dept. of Transportation

CORPS Publications

http://www.wbdg.org/references/pa_dod.php

Department of Defense (DOD) | Whole Building Design Guide

Comments, suggestions and recommended changes for UFGS or UFCs are welcome and should be submitted as a Criteria Change Request. To submit a Criteria Change Request, click on the CCR link next the document title on the applicable page listed above. The Department of Defense (DoD) and the military services have initiated a program to unify all technical criteria and standards pertaining to planning, design, construction, and operation and maintenance of real property facilities. The objective of the Unified Facilities Criteria (UFC) program is to streamline the military criteria system by eliminating duplication of information, increasing reliance on private-sector standards, and creating a more efficient criteria development and publishing process.