ThomasNet® - Product Sourcing and Supplier Discovery Platform. American Public Transportation Association Standards Development Program. Welcome to the APTA Standards Program Published Document Library Standards have become an important program activity at APTA and in the public transportation industry.
APTA, through its policy and planning committees, has played a major role in creating active working structures within the organization focused on the development of standards. Hundreds of industry volunteers serving on numerous working committees have developed standards for bus, rail transit and commuter rail operations, maintenance, procurement and ITS. These consensus based standards are making a real difference to the management and operations of these organizations. These standards are now being used to achieve operational efficiencies and safety improvements in services, facilities and vehicles. All of our standards are free to download and can be browsed by program below. Download the 2013 APTA Standards Program Compendium (pdf). Programs Types of Documents Published By Standards. Angle of Internal Friction on the Geotechnical Information Website.
Backfill material - MineDesignWiki. From MineDesignWiki - Collaborating to create mining best practice Backfill binders Cement 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. Portland cement Portland cement is also referred to as hydraulic cement because it sets and hardens by reacting chemically with water. The principal chemical constituents of Portland cement are listed below.
Tricalcium silicate or called alite Dicalcium silicate or called belite Tricalcium aluminate or Tetracalcium aluminoferrite or With slight chemical or physical variations, these constituents can be adjusted to produce Portland cements with special characteristics. Table 1: Types of cementitious material used in Canada and the U.S.A Name in CSA Application. Office of Science and Technology. Www.oregongeology.org/pubs/OG/OBv31n12.pdf. USGS Publications Warehouse. Calculating a Slope. 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). 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. Measure the length of the line you drew and, using the scale of the map, convert that distance to feet. Www.wspgroup.com/upload/documents/PDF/SELLS/PM136-Metric Conversion.pdf. Quest Structures. Engineering Manuals.
Tides. Dept. of Transportation. CORPS Publications. Department of Defense (DOD) Unified Facilities Criteria Program Related Links 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. A USACE F Air Force N Navy UFGS in MasterFormat™ 2004 have a numeric designator at the end of the document number, for example UFGS 01 20 00.00 20. 10 USACE 20 Navy 30 Air Force 40 NASA. Dropbox. Design_Guides_Web. ENGINEERING.com | The Engineer's Ultimate Resource Tool.