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Office of Hydraulic Engineering 

Location and Design Manual - Volume 2

 Revisions & Updates

  

 

 Revisions and Updates Since 1/21/2011

 
  
  
Description
  
  
Distribution Letter.pdf
  
• 1001.3 – Added section Feasibility Study Activities
• 1002.3.7 – Deleted references to SS937
• 1005.1.3 – Added section 1005.1.3 Exceptions
• 1005.1.4 – Added Self-Permit Process guidance
• 1007.1 B. – Clarified designer guidance
• 1009 – Deleted Subsurface Drainage Guidance narrative and figures.  Added direction to the Pavement Design Manual, Section 205 for guidance
• 1104.2.1 C. – Deleted last sentence
• 1112.1 – Added to EDA definition to be consistent with definition in 1115
• 1115.3 – Clarified which parts of projects draining to large streams are excluded from quantity treatment requirements.  Added BMPs that treat only water quantity
• 1115.4 – Deleted Bioretention Cell
• 1115.5 – Added vegetated biofilters to first sentence
• 1115.6.1 – Deleted first sentence.  Clarified definition of redevelopment project
• 1115.6.2  – Reworded for clarification
• 1115.7 – Updated for consistency with other L&D sections and to clarify specific treatment requirements for different types of projects
• 1117.2.1 – Changed 6” to 4” of item 659
• 1117.3.1 D. & E. – Changed total storage volume to WQv
• 1117.5 – Added information about Treatment credit
• 1117.5.3 – Deleted impervious tributary equation
• Appendix B – Sample Plan Notes:  Updated  note D122
104 KB 7/15/2016
Distribution Letter January 2016.pdf
  
• Revisions / Additions in Red
• Replaced “Fabric Filter” with “Geotextile Fabric” throughout   the manual.
• 1002.1 – Added bullet point; “If a structure type study is performed and the cost analysis indicates a lower cost.”
• 1002.1.2 – Deleted “or preferred construction methods” from the first sentence of the last paragraph.
• 1002.3.1 – Added “3.  Structures defined as a bridge” require a 75 year service life.
• 1005.1 – Deleted the first sentence of the first paragraph; “The requirements of the Code of Federal Regulations, Volume 23, Part 650A, shall be followed for all projects.”
• 1008.5.3 Structural Design Criteria – Deleted entire section, OSE responsibility.
• 1008.6.3 Structural Design Criteria – Deleted entire section, OSE responsibility.
• 1008.7.3 Structural Design Criteria – Deleted entire section, OSE responsibility.
• 1008.8.3 Structural Design Criteria – Deleted entire section, OSE responsibility.
• 1101.1 General – Deleted last 2 sentences in third paragraph and the defunct link to “LiDAR Tools User Guide”
• 1103.8 – Added equations and a link to
http://www.dot.state.oh.us/Divisions/Engineering/Hydraulics/Additionsl%20Resources/Pages/default.aspx to aid in bridge scupper placement.
• 1105.6.11 – Deleted “watersheds” and reworded paragraph to clarify requirements.
• 1112.1-3, 1115.7, 1117.2.2 – Added information for clarity, shown in red. 
• 1117.5 – Replaced entire section.
• 1117.6.1 – Replaced Equation and Table with link to
http://soilandwater.ohiodnr.gov/water-conservation/stormwater-management. Updated design criteria, shown in red.
• 1117.6.2 – Updated design criteria, shown in red.
• 1118.2.1 B. – Added “including electronic program files”.
• Appendix B – Sample Plan Notes:  Updated  note W101 Bioretention Cell(s)
315 KB 1/15/2016
Distribution Letter - July 2015.pdf
  
• Revisions / Additions in Red
• Section 1002.3.7 – Added CIPP by Plan Note option
• Section 1005 – Additional clarification of the FEMA process.
• Section 1105.6.13 – Provided guidance from OES to    determine OHWM.
• Section 1105.2 – Clarification to Stream Protection
• Section 1112.2 – Clarification to Routine Maintenance Projects
• Section 1115.2 – Clarification and correction to Table 1115-1
• Section 1117.2 – Clarification and definition of Manning’s n for Vegetated Biofilter
• Section 1117.3 – Clarification to Detention Basin
• Table 1117-3 – Increased maximum pavement width to 48  feet
• Section1117.4 – Clarification to Retention Basin
• Section 1117.5 – Correction to the definition of “T”
• Figure 1117-5 – Deleted
• Figure 1117-6, 1117-7 – Revised
• Added Sample Plan Note D122; Item 611 - Conduit Misc.: Cured-In-Place Pipe Liner
64 KB 7/17/2015
Distribution Letter -January 2015.pdf
  
• Revisions / Additions in Red
• Section 1002.1 – Additional guidance/requirements allowing a single pipe material
• Section 1002.3.7 – Added SS833
• Section 1005 – Removed requirement for ODOT to secure a floodplain permit, Added guidance regarding Flood Hazard Mapping and the ODOT Self-Permit Process
• Section 1009.2.1 – Removed guidance regarding specifying a pipe material for 6” underdrains
• Table 1104-1 – Removed 33” size
• Section 1105.2.2 – Removed guidance regarding burying replacement concrete box culverts
• Section 1117.2.2 – Vegetated Biofilter revisions
• Figure 1117-4 Vegetated Ditch Example – Removed
• Appendix A – Added forms LD-50; No-Rise Certification and LD-51; Floodplain Letter of Compliance Template
• Sample Plan Note D112; Item 611-Conduit Bored or Jacked – Removed 0.5” reference
• Sample Plan Note D121; Item Special-Pipe Cleanout – Added  3 pay items
63 KB 1/16/2015
distribute_letter_july_2014.pdf
  
• Revisions in sections 1002, 1104, 1115 and 1117 highlighted in RED
• Added new section 1002.1.2, Deviation by Local
• Added new section 1104.6, Combined Sanitary Sewer Separation
• Updated Figures 1008-1, 1008-2, 1008-3 by eliminating 33” and 27”x42” sizes and revising cover heights for larger diameter conduits
• New Rainfall Intensity-Duration-Frequency (IDF) curves and General Notes, Figures 1101-2 & 1101-3. For any projects that have begun using the previous IDF curves, continue with their use through the completion of the project. The current IDF curves should be used at the start for all new projects
• Revised Bioretention Cell Example, Figure 1117-8
• Updated Sample Plan Note D123
• A new AppParameter2014 file for CDSS is available to download utilizing the updated conduit sizes and IDF curves as noted above. The files can be found on the left under Hydraulic Software & Design Resources.
54 KB 7/18/2014
distribute_letter_january_2014.pdf
  
•Minor revisions in sections 1008, 1009, 1105, 1114 and 1117 are highlighted in red.
•Removed Form LD-30 from Appendix A.
•Updated Figure 1008-14.
•Removed Figure 1117-1.
36 KB 1/17/2014
distribute_letter_october_2013.pdf
  
•All uses and references of BMP - Exfiltration Trench have been removed from the
manual.
35 KB 10/18/2013
transmittal_ letter_volume2_July_2013.pdf
  
• Clarification on extending culverts
• Additional guidance on rehabilitation of culverts
• Added references to SS 835, SS895 and SS940
• Removed reference to SS898
• Additional guidance on placement of manholes
• Added use of StormCAD to perform storm sewer calculations
• Revisions to the Post Construction BMP sections
• Clarification on bridge hydraulic review submittals
• Removed remaining metric references (Figure 1103-4)
59 KB 7/19/2013
distribution_letter_January_2013.pdf
  
• All references to Item 603 and 604 have been revised to   Item 611
• Bridge Hydraulics have been incorporated into the manual
• Temporary Structures have been added to the manual
• Post Construction BMP sections
• Guidance regarding the use of Trench and Slotted Drains
• References to metric units were removed
• Maximum height of cover tables for conduits have been    removed
• Figure 1006-1 Floodway Schematic has been added
53 KB 1/18/2013
distribute_letter_July_2012.pdf
  
•1102.3.2 Added design criteria for Articulating Concrete Block Revetment System
•Revised Figure 1112-1 to remove references to SS870
•Revised Figure 1105-3 to correct section reference
43 KB 7/20/2012
distribute_letter_January_2012.pdf
  
•  Clarified 1002.1.2 - Deviation by Local
•  Revised 1006.2.2.E - Check Storm Controls
•  Clarified 1008.9 - Foundations
•  Revised 1105.1 – Roadway Culverts: General
•  Removed references to “SS 870 Seeding” since it no longer exists.
•  Revised 1106.2.2 – Full Height Headwalls
•  Revised 1114.1 Temporary Sediment and Erosion Control
•  Revised LD-35
167 KB 1/20/2012
Distribution Letter July 2011.pdf
  
•Replaced all references to the Office of Structural Engineering with the Office of Hydraulic Engineering
•Revised 1002.3.7 Culvert Rehabilitation
•Clarified 1003 Hydrology
•Revised 1008.7 Precast Reinforced Concrete Arch Sections
•Revised 1008.9 Foundations
•Revised 1010 Maintenance of Traffic
•Clarified 1101 Estimating Design Discharge
•Defined “local depression” in 1103.6.2 Grate or Combination Grate and Curb Opening Inlet
•Clarified 1117.2 Manufactured Systems
•Revised Plan Note D124
•Revised LD-30, LD-33 and Fig. 1117
44 KB 7/15/2011
distribute_letter_January_2011.pdf
  
•Section 1006.2.3  Updated web address
•Section 1009.2  Clarified language for underdrains in superelevated sections.
•Figure 1009-11  Typical Pipe Underdrain Locations – New.
•Section 1010  Maintenance of Traffic Drainage – New.
•Section 1104.4.7  Maximum Storm Sewer Slope – New.
•Section 1105.2.2  Depressed invert for box culverts clarified. 
•Plan Notes D123 and D124 added. 
16 KB 1/21/2011