01498nam 2200421 a 450 991070116070332120120224133345.0(CKB)5470000002415439(OCoLC)778093275(EXLCZ)99547000000241543920120224d2010 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierPavement management roadmap[electronic resource] /[Kathryn A. Zimmerman, Linda M. Pierce, James Krstulovich][Washington, DC] :[U.S. Dept. of Transportation, Federal Highway Administration],[2010]1 online resource (v, 125 pages)Cover title."Publication No. FHWA-HIF-11-011"--P. [i] ."December 2010"--P. [i].Title from title screen (viewed on Feb. 24, 2012).PavementsUnited StatesMaintenance and repairPavementsUnited StatesManagementPavementsMaintenance and repair.PavementsManagement.Zimmerman Kathryn A1392072Pierce Linda M1392073Krstulovich James1392074United States.Federal Highway Administration.Applied Pavement Technology, Inc.GPOGPOBOOK9910701160703321Pavement management roadmap3446369UNINA03552nam 2200361za 450 991083019500332120230725023600.09781444324273 (e-book)9781444324266 (pbk.)(MiAaPQ)EBC547193(EXLCZ)99267000000002958020100309d2010 uy 0engur|n|---|||||Electrical installation calculations[electronic resource] for compliance with BS 7671 : 2008 /Mark Coates, Brian Jenkins4th ed.Chichester Wiley20101 online resource (xix, 192 p.) illIncludes index.Previous ed.: 2003.1. Calculation of the cross-sectional areas of circuit live conductors -- 2. Calculation of voltage drop under normal loadconditions -- 3. Calculation of earth fault loop impedance -- 4. Calculations concerning protective conductor cross-sectional area -- 5. Calculations related to short circuit conditions -- 6. Combined examples -- Appendix: The touch voltage concept -- Index.Manual calculations are still extensively used and in particular are necessary for checking and verifying various software calculation design packages. It is highly recommended that users of such software familiarise themselves with the rudiments of these calculations prior to using the software packages. This essential book fills the gap between software and manual calculations. It provides the reader with all the necessary tools to enable accurate calculations of circuit designs. Rather than complex equations, this book uses extensive worked examples to make understanding the calculations simpler. The focus on worked examples furnishes the reader with the knowledge to carry out the necessary checks to electrical cable sizing software programmes. Other key features include: Updated information on 230 volt references and voltage drop under normal load conditions; New sections on buried cables that take into account soil thermal conductivity, trenches and grouping, allowing readers to carry out accurate cables sizing; Information and examples of steel wired armour cables, new to this edition. This includes sufficiency during short circuits and, for cables with externally run CPCs, gives unique fault conditions. Covers: calculations of cross-sectional areas of circuit live conductors; Earth fault loop impedances; Protective conductor cross-sectional areas and short circuit conditions; Short circuit protection. The last chapter combines all of the calculations of the previous chapters to enable the reader to complete an accurate design of an installation circuit under all conditions. A unique tool for detailed electrical installation trade, Electrical Installation Calculations, fourth edition is invaluable to electricians, electrical designers, installers, technicians, contractors, and plant engineers. Senior electrical engineering students and technical colleges, junior engineers, and contracts managers will also find this text useful.Electric wiringMathematicsElectric wiringStandardsGreat BritainElectric wiringMathematics.Electric wiringStandards621.31924Jenkins Brian D(Brian David)856699Coates M(Mark)856700Electrical Contractors' Association (Great Britain)9910830195003321Electrical installation calculations1913331UNINA