Era drainage design manual 2002

Ohio department of transportation central office 1980 west broad street columbus, oh 43223 mike dewine, governor jack marchbanks, director. The standards set out shall be adhered to unless otherwise directed by era. Policies in respect of road planning and design 80kb jan 2003. Drainage is one of the essential components of roadway design. Mitigation measures were proposed based on era drainage design manuals 2002 and 2011 for. In 2002 the ethiopian roads authority era published road design manuals to. Roadway design manual, ch 2 sec 7 drainage facility placement. Hydraulic design series 2, highway hydrology, october 2002.

Duration time of concentration the time required for water from the remotest place to reach a specific point on the drainage system. The supplement will be referred to as the northern rivers local government handbook of stormwater drainage design. Road drainage manual department of transport and main roads. Appendix a geometric design manual 20 classification of roads ethiopian roads authority page a1 appendix a classification and description of roads the following are the classified roads in ethiopia under the five classes. Design guidance is provided for the design of storm drainage systems which collect, convey, and discharge stormwater flowing within and along the highway right ofway. Roads will affect the natural surface and subsurface drainage pattern of a watershed or individual hillslope. Due to technological development and change, these manuals require periodic updating. Design manual for segmental retaining walls 3rd edition.

It provides the technical reference required for all aspects of hydraulic, road drainage, erosion, environmental and sediment control throughout queensland. Era 2002 design manuals other documents typical cross sections recommended grades and drainage provision for rural roads rr50,rr30 and rr10. Watershed management field manual fao conservation guide 5 food and agriculture organization of the united nations rome 1998 table of contents. Drainage manual december 1996 41 chapter 4 precipitation introduction overview precipitation is applied to a drainage area to calculate runoff with the sacramento method. Through this step the design of the storm drainage system will evolve from the preliminary. Environmental protection agency off iice of water program ti operons a office of research and development municipal envi ronmental research laboratory. Code of procedures for the planning and design of highway and road structures in south africa feb 2002 11. April 2000 revision only february 2000 section 200 revision only february 2000 section 700 revision only february 2000 section 800 revision only february 2000 section 1600 revision only december 2001 revision only may 2006 revision only. Highway capacity manual, 2000, published by transportation. Roadway design florida department of transportation. Manual, standard specifications and bidding documents for low.

Clark county regional flood control district document. Special considerations are included for surface and subsurface drainage, water management and water control structures, and other important design considerations. This is to ensure that potholes do not develop by rapidly removing surface water and to ensure that excessive crossfall does not. This current version of the manual has particular reference to the prevailing. Vdot governance document location and design division issued april 2002 revised july 2019. Ih 635 drainage criteria manual 11 october 2006 chapter 1 introduction 1. Drainage handbook for the preparation of drainage connection 1486 permit application package 2mb size. Methods andprocedures are given for the hydraulic design of storm drainage systems. Road drainage design has as its basic objective the reduction andor elimination of energy generated by flowing water. This manual is divided into the following five sections. Design guidance is provided for the design of storm drainage systems which collect, convey, and discharge stormwater flowing within and.

Geometric design manual 20 classification of roads ethiopian roads authority page a3 a2 a21 a22 a23 a24 a25 a26 a27 a28 a29 a210 a211 a212 b20 b21 b211 b212 b22 b221 b222 b223 b224 b225 c21 d21 d22 e21 e22 e23 i. All drainage projects shall conform to requirements in this storm water drainage design manual, the citys storm drain master plan, and shall be approved by city personnel. However, i should emphasize that careful consideration to sound engineering practice shall be observed in the use of the manual, and under no. The road network in ethiopia provides the dominant mode of freight and passenger transport and thus plays a vital role in the economy of the country. The original bridge and structures design manual was created through the publicprivate.

This manual covers the planning, design, construction, maintenance and operation of road drainage infrastructure. Road authority, 2002 and is used for design of all structures that. The department of transport and main roads has generally agreed to adopt. Standards for highways design manual for roads and bridges. Appendix a classification and description of roads era. Circular culverts and storm sewers revised, april 2014. Storm drainage design is an integral component in the design of road and transportation networks. Erosion and sediment ontrolc esc items are placed in a separate cadd file. Structural design of storm drain, computer application manual.

Adding new useful local information, which has become available since the publication of the era drainage. The urban drainage design manual, hydraulic engineering circular no. In 2002, the ethiopian roads authority era first brought out road design manuals to provide a standardized. In 2002, the ethiopian roads authority era first brought out road design manuals to provide a standardized approach for the design, construction and maintenance of roads in the country. Return period of 5 10 20 25 50 and 100 return period of 5, 10, 20, 25, 50, and 100. Storm drainage design and technical criteria manual. Chapter 10 storm drainage facilities drainage design manual 20 page 102 ethiopian roads authority surface drainage is a function of transverse and longitudinal pavement slope, pavement roughness, inlet spacing, and inlet capacity. Chapter 9 hydraulic structures urban drainage and flood. This is the other extreme of pitching the moldboard too far forward. Chapter 5 design controls criteria geometric design manual. Environmental resource permit stormwater quality applicants.

Other relevant documentation but not limited to which shall be referenced and. Drainage lifecycle provisions related to highway drainage systems. Drainage design manual final nov ethiopian roads authority. Volume 2 technical handbook georgia stormwater management manual 51 chapter 5 stormwater drainage system design table of contents section 5. Summary in order to a establish a design rainfall and flow estimation methodology compatible to the ethiopian environment and facilitate standard design practices in all road design works in ethiopia, the ethiopian road authority era had commissioned louis berger group to prepare a road drainage design manual in 2002 under a credit from the international development agency ida. The standards set out shall be adhered to unless otherwise. Summary in order to a establish a design rainfall and flow estimation methodology compatible to the ethiopian environment and facilitate standard design practices in all road design works in ethiopia, the ethiopian road authority era had commissioned louis berger group to prepare a road drainage design manual in 2002 under a credit from the. Most documents are in pdf format which can be viewed by using the.

Provision of best practice and case studies of drainage infrastructure internally within ethiopia and elsewhere in africa, caribbean and usuk. Design and construction of urban stormwater management. Jan 21, 2016 duration time of concentration the time required for water from the remotest place to reach a specific point on the drainage system. Location and design division location and design business. Policy design guideline standards for single carriageway national roads draft 276kb may 2009. This climate zoning is given in the drainage design manual era, ethiopian. This accomplishes two primary goals reduce damages from larger floods avoid total washout of diversion this is usually accomplished by ensuring that. Comprehensive study the comprehensive study has two major components. Temporary drainage design as with any stream crossing, temporary structures should be design to accommodate larger floods than the design flood. Precipitation data is most often in the form of design storms. The engineering area contains technical engineering data related to flood control in clark county, fema firm panel information, capital improvement project design and asbuilt documents and an electronic version of the hydrological criteria and drainage design manual hcddm. The example shows a total of two records and four fields. Local issues and experience on the geometric, earthwork, drainage. Manual introduction overview of the material covered in this manual.

July 2017 vdot governance document drainage manual. Hydrology manual iii january 2006 chapter 7 runoff calculation methods 58 7. The material will not roll across the face of the moldboard and does not mix. In addition to this, the cutting edge will not easily penetrate a hard surface, making it hard to trim out even light depressions in the.

The drainage of liquid waste from a private sewage network of a building into the public sewage network shall be by way of natural drainage. Mto drainage management manual, dmm, 1997 hard copies can also be purchased from service ontario publications highway drainage design standards 2008 mto gravity pipe design guidelines. Drainage and stormwater management general notes can be placed using the procedures detailed in chapter 3 section 3. The most recent version of the drainage manual is presented and is the official source for the development and application of all drainage design related to vdot plans. Development of a national design manual, standard specifications and bidding documents for low volume roads in ethiopia. The network comprises a huge national asset that requires adherence to appropriate standards for design, construction and maintenance in order to provide a high level of service. Ethiopian roads authority drainage design manual 123 help me. Mece organised a stakeholder workshop to obtain experiences of practitioners and identify where the perceived shortfalls exist in the current manual and what research and available information now exists that can be incorporated into the manual. Revision of the drainage design manual in ethiopia contract. Drainage design management system users manual 9238. Alternatives to the use of design storms are historic storms and continuous simulation. January 01, 2020 purpose this manual documents policy on bridge design in texas. Proposed revisions and additions to the existing era drainage design manual 2002 include.

The objective of storm water conveyance systems storm drain piping, ditches and. The most recent version of the drainage manual is presented and is the official source for the development and application of all drainage design. Developed in an era when only nasa and a few research scientists had access to computers, the. Procedures for road planning and geometric design 256kb jan 2003. In the example, kvltest1, 01, major basin 01, 10 compose one record in the table basins. The design methodologies contained within allow the engineer to analyze the influence of all components of the srw system on wall performance. Policy of sanral in respect of unsolicited proposals. Effective with design approval on or after may 01, 2020.

Chapter 1 manual introduction section 1 about this manual hydraulic design manual 14 txdot 11 2002 organization this manual is organized as follows. This drainage design manual has been prepared as a guide for the hydraulic design of highway drainage facilities. A policy on design standards interstate system, aashto, 2005 b. Section 11, drainage design criteria, lists criteria and parameters for the design of various drainage related facilities. This manual supersedes the drainage design manual part of the era 2002 series of. Design and construction of urban stormwater management systems water environment federation and american society of civil engineers mop 77wef mop fd. In december 2002, sherman city councilors adopted a new flood study, performed by kimley horn engineers in cooperation with city engineering department staff. This is to ensure that potholes do not develop by rapidly removing surface water and to ensure that excessive crossfall does not cause erosion of the surface. Chapter 9 hydraulic structures september 2017 urban drainage and flood control district 93 urban storm drainage criteria manual volume 2 there are two fundamental systems of a drop structure that require design consideration. This manual supersedes the pavement design manual volume ii rigid pavements part of the era design manual series of 2002. A policy on geometric design of highways and streets, aashto, 2011 6. Standards for highways design manual for roads and. Revision of the drainage design manual in ethiopia. Erosion and sediment control manual 90mb size 2010 version.