Drainage manual virginia department of transportation. Chapter 6 hydrology virginia department of transportation. Additionally, the following generalizations given in chapter v of the highway drainage guidelines by aashto 2007 and chapter 2 of the aashto model drainage manual 2014 should be considered. The manual does not present directions on how to run the computer program, the designer must refer to the appropriate user manual of those programs. Surface and groundwaterhydrologic cyclesurface water principlesgroundwater principles. This manual was based largely on the american association of state highway and transportation officials aashto model drainage manual and on cdots previous drainage design manual 2004, mommandi, yanagihara, molinas. Computation methods are explained in detail, including comprehensive design examples, in the vdot drainage manual. All above deliverables shall be uploaded to projectwise as pdf files at the proper. The drainage laws and rules that are applicable to a drainage facility are discussed below. Highway design manual chapter 810 hydrology chapter 820cross drainage fhwa hydraulic design series. All storm drains 12 inches in diameter and larger shall have profiles prepared and submitted to the county. The 2002 version replaces the current manual which was developed in 1980.
Vdot can provide important information to local agencies wishing to develop a comprehensive swm plan. For a more detailed discussion refer to the publications aashto highway drainage guidelines 2007, aashto drainage manual volumes 1 and 2 2014, and fhwa hds2 highway hydrology 2002. Road and bridge standards, volumes i and ii, prepared by the virginia. Comparison of design computations and parameters estimated from storm data 17. Chapter 1 introduction virginia department of transportation. Drainage manual florida department of transportation. Drainage guidelines, chapter 10 and the aashto drainage manual. Guidance is provided for the design and analysis of drainage infrastructure such as catch basi n grates, curb and gutter sections, and closed drainage systems. Vdot recommends evaluating several hydrologic methods for comparison purposes. Manuals, guides and instructional and informational. Drainage design manual for maricopa county, volume i hydrology revised 121418 pdf drainage design manual for maricopa county, volume ii hydraulics revised 121418 pdf drainage design manual for maricopa county, volume iii erosion revised 73018 pdf drainage policies and standards manual for maricopa county revised 82218 pdf. This edition of the vdot drainage manual constitutes a major technical update. For purposes of interpretation of the policies and procedures of vdot, a storm drain or storm sewer system is defined as follows.
In the design of highway drainage structures, floods are. Storm drains virginia department of transportation home. Introduction virginia department of transportation. Stormwater drainage conveyance systems james city county. This manual should be used in conjunction with the wsdot highway runoff manual and the wsdot design manual, specifically section 1210. Transportation officials aashto model drainage manual and on cdots previous drainage design manual 2004, mommandi, yanagihara, molinas. The manual s content provides a detailed listing of criteria, guidelines, policies and procedures to be followed throughout the design of drainage facilities in conjunction with new.
Figure st1 typical gutter section constant cross slope vdot drainage manual 2010. Stormwater drainage conveyance systems nonbmp related. Vdot bmp design manual of practice, prepared by virginia tech, dated effective april 20 or latest version, as amended. Tt travel time, hours stormwater hydrology tmdl total maximum daily load usace u. Manual volumes 1 and 2 2014, and fhwa hds2 highway hydrology 2002. Except where more stringent requirements are presented in this design manual, stormwater hydrology shall comply with state requirements. Hydrology hydraulics floodplain flow needs of the area economic and environmental. Also allows the user to determine to test different flexible and concrete linings in accordance with the latest version of the fhwas hec25 publication.
The scs method may be used for drainage areas up to 10 square miles. The design peak flow shall be selected based on a professional evaluation of the results of the various methods. The 2002 drainage manual has been revised based on the aashto model drainage manual and now is the official source for development and application of all drainage design related to vdot plans. Determining structure size and type is generally one of the earliest activities undertaken in the design process. Chapter 4 of the blue book, and part 630 hydrology of the usdanrcss national.
A storm sewer system is a drainage system existing andor proposed consisting of a series of at least two interconnecting pipes and two structures drop inlets, manholes. Virginia department of transportation vdot drainage manual. It is not a summary of all existing drainage laws, and it is not intended as a substitute for legal counsel. The engineer will update the hydraulic model, as needed, to reflect the results of the vdot survey and bridge design or construction. Verification of their accuracy in duplicating local hydrological estimates of. For the purpose of this manual, hydrology will deal with estimating flood magnitudes as the result of precipitation. Many of the manuals listed on this page are living documents, meaning changes and updates will be made to them periodically. Vdot drainage manual va swm handbook bmp clearinghouse 4. Hds1hydraulics of bridge waterways hds5hydraulic design of highway culverts arema manual for railway engineering aashto highway drainage guidelines cvfpb california code of regulations title 23, article 8. The science and study concerned with the occurrence, circulaton, i distribution and properties of the waters of the earth and its atmosphere, including precipitation, runoff and groundwater. Page 63 deleted the following language at the end of section 6. The vdot drainage manual shall be used for the design of inlets. Much of this manual uses the aashto model drainage manual as the lead information document with.
Erosion and sediment control and stormwater management for. In general, only computed peak flow rates will be requiredfrom the hydrologic. Hydrology and hydraulics and the transportation research board trb standing. Road drainage manual department of transport and main roads. The following generalizations can be made regarding drainage liability. Highway drainage design manual, volume 2, hydrology, second edition, 2014. Manuals, guides and instructional and informational memoranda. The manual offers primary guidance regarding basic hydrology and water quality, stormwater. In the context of hydraulic design, hydrologic analysis provides estimates of flood magnitudes as a result of precipitation. For this manual, hydrology will consist of estimating storm water runoff discharge rates andor volumes from precipitation for the design of the highway drainage system and any required cross drainage structures. Comparison of peak discharge and runoff characteristic estimates. Location and design virginia department of transportation. The authors wish to acknowledge contributions of aashto and the authors of cdots previous manual.
When there is a conflict between the virginia department of transportation drainage manual, the hampton roads planning district commission regional construction. Table of contents virginia department of transportation. See the vdot drainage manual for more indepth information. Works either as a standalone application or, as appropriate, in conjunction. Feb 02, 2021 the 2002 drainage manual has been revised based on the aashto model drainage manual and now is the official source for development and application of all drainage design related to vdot plans. All floodplain studies shall be prepared utilizing nrcs hydrology unless otherwise. All hydrologic and hydraulic computation methods as outlined in the current edition of the vdot drainage manual or any other. Chapter 11 hydrologic methods and computations table. Except where more stringent requirements are presented in this design manual, stormwater hydrology shall comply with state requirement s. Aug 30, 2000 1605b02 storm drain design frequency and catch basin spacing pdf 0. Fhwas hec22, urban drainage design manual, is referenced as the basis for stormwater drainage system design. Using green infrastructure in highway roadside stormwater. These estimates consider processes in a watershed that transform precipitation to runoff and that transport water through the system to a projects location. The manual consists of 14 chapters, the sdp and sacpre programs, and a set of soil maps for the sacramento county area.
Hydrology and floodplain analysis 5th edition solution hydrology and floodplain analysis 5th edition solution download hydrology and floodplain analysis pdf vdot drainage manual 61 of 37 chapter 6 a hydrology. Odot roadway drainage manual november 2014 hydrology 7. Vdot drainage manual, prepared by the hydraulics section of the virginia department of transportation, dated 2002 or latest version, as amended. Hydraulics manual vermont agency of transportation vermont. It should not be treated as a basis for legal advice or legal decisions. Vdot drainage manual, prepared by the hydraulics section of the virginia.
Mar 15, 2021 manual titledescription division manuals, guides and informational instructionslocation and designcadd manual cadd manuallocation and design drainage manual drainage manuallocation and designgeopak manual vdot advanced geopakdrainage ii manual location and designigrds concepts manual igrds concepts manual location and designigrds rel. Pipes, storm sewer systems and culverts maintained by vdot will be analyzed by the use. January 2021 roadway design bulletin 2021 drainage manual. Oct 18, 2019 the following links will take you to comprehensive document containing all standard sheets for each section of the road and bridge standards. For drainage areas greater than 10 square miles, calculations shall be performed using at least two separate methods as described in the vdot drainage manual scs method, regression equations, andor stream gage data. Army corps of engineers v, v i, v o velocity, feet per second open channel and pipe hydraulics vdot virginia department of transportation vdot drainage manual virginia department of transportation, drainage manual, current edition. Hydrology policies and standards general guidelines third party studies hydraulic design for existing land use conditions effect on existing facilities 4. Figure st1 typical gutter section constant cross slope vdot drainage manual 2002 6 figure st2 typical gutter section composite cross slope vdot drainage manual 2002 7 figure st4 typical streetside swale sectionsvshaped udfcd usdcm 2002 9 figure st5 flow in triangular gutter sections fhwa hec 12 1984 10. Management design and construction standards manual, dated july 1, 2012, is hereby adopted as. Association of state highway and transportation officials aashto task force on hydrology and hydraulics produced the model drainage manual as part of their continuing work to assist the standing committee on highways, subcommittee on design, in deve loping guidelines and. Vdot drainage manual va swm handbook bmp clearinghouse bmp compliance worksheet 5. The virginia department of transportation vdot has developed the 02 vdot 20 drainage manual to provide designers a valuable reference and tool for the drainage design of virginias roadways and to document vdot s policies and procedures for standard roadway drainage design.
Drainage design memoranda virginia department of transportation. Probability of exceedance annual exceedance probability aep design aep 3. Urban hydrology for small watersheds chapter 2 estimating runoff 210 210vitr55, second ed. Anzulai 1 university of california, davis department of land, air, and water resources samuel sandoval solis, phd assistant professor hydrology 101 esm121 water science and management lecture 1 hydrology 101. Stormwater management design manual october 1, 2007 as revised january 30, 2008 as revised august 16, 2010 as revised july 1, 2014. A goal in highway drainage design should be to perpetuate natural drainage. Chapter 2 estimating runoff technical release 55 urban. Stay uptodate on covid19 and connecticuts vaccination program. Drainage design manual the drainage design manual provides guidance on the illinois tollway standards for the design of drainage facilities.
Except where more stringent requirements are presented in this manual, storm drain collection systems shall comply with vdot and other state requirements. Combined drainage manual virginia department of transportation. Chapter 4 hydrology identifies the preferred methods of hydrologic analysis and their proper application. In order to make for easier download, the manual has been divided into parts. Therefore, if you would like to be notified of changes or updates to manuals on this page, simply click subscribe. The road drainage manual guides planning, design, construction, maintenance and operation of road. Contact us alfred gross cdot state hydraulics engineer 2829 w. All hydrologic and hydraulic computation methods as outlined in the current edition of the vdot drainage manual or any other standard accepted reference for the design of stormwater drainage systems for urban or transportation facilities are acceptable for use. Detailed legal aspects related to drainage are discussed in the legal chapter. Vdot will independently evaluate the hydrology for the purposes of comparison. Volume 2 of the sacramento citycounty drainage manual can be downloaded here in pdf format.
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