Fillable 30208 SM-06 Basis Of Design Checklist (City of BIsmarck)

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30208 SM-06 Basis Of Design Checklist (City of BIsmarck)

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For Office Use Only:
Date Received:
Basis of Design
SM-06
Engineering Department
City of Bismarck
221 N. 5
th
Street
P.O. Box 5503
Bismarck, ND 58506
701-355-1505
TRAKiT #:
POST-CONSTRUCTION STORMWATER MANAGEMENT
Basis of Design & Construction Plan Submittal Checklist
(Complete all applicable items)
Page 1 of 6 January 1, 2018
Project Information:
Site Address:
________________________________________________________________________
Description of Work:
________________________________________________________________________
Lot & Block Number:
Subdivision:
Summary of Site Conditions
The purpose of this summary is to provide a brief comparison of the SWMP Post-Construction pervious and impervious areas
utilized in the Conditional Approval Review to the Design Post-Construction pervious and impervious areas. If the site coverages
have changed between the Conditional Approval and the preparation of the Construction Plans please provide updated hydrologic
and hydraulic modeling consistent with the requirements of the SWDSM.
Pervious Area
(square feet)
Impervious Area
(square feet)
SWMP Post-Construction
Design Post-Construction Conditions
Change in Area (+/-)
Basis of Design Report
All Construction Plans submitted for review and approval by the City Engineer are to include a Basis of Design Report that
documents how the final designs meet the requirements of the SWDSM and the Conditionally Approved PCSMP.
Item
Description
Yes
N/A
Page
1
Site & Applicant Information
A
Applicant, Contact Name, Address, Phone & Email
B
Site Address and Subdivision Lot & Block as Applicable
2
Summary of the Requirements of the Conditionally Approved
PCSMP
A
Point(s) of Analysis and/or Point(s) of Discharge
B
Requirements or Recommendations of the Approved SWMP
C
Description of Deviations from the Approved SWMP
3
Hydrologic Analysis Summary
A
Summary of the Approved SWMP Existing & Post-Construction
Hydrology, or
B
Revised Existing and Post-Construction Hydrology following the
requirements of PCSMP submittal checklist or approved SWMP outline.
5
Post-Construction Stormwater Management BMPs Summary
5-A
Post-Construction Peak Flow Compliance BMP
A.1
Summary of the Approved SWMP Peak Flow Compliance BMP; or
A.2
Revised Peak Flow Compliance BMP analysis and design following the
requirements of PCSMP submittal checklist or approved SWMP outline.
Basis of Design
SM-06
POST-CONSTRUCTION STORMWATER MANAGEMENT
Basis of Design & Construction Plan Submittal Checklist
(Complete all applicable items)
Page 2 of 6 January 1, 2018
Basis of Design Report
All Construction Plans submitted for review and approval by the City Engineer are to include a Basis of Design Report that
documents how the final designs meet the requirements of the SWDSM and the Conditionally Approved PCSMP.
Item
Description
Yes
N/A
Page
5-B
Post-Construction Water Quality Compliance BMP
B.1
Summary of the Approved SWMP Water Quality BMP; or
B.2
Revised Water Quality Compliance BMP analysis and design following
the requirements of PCSMP submittal checklist or approved SWMP
outline.
5-C
Post-Construction Drainage & Conveyance BMPs
C.1
Streets
Summary table listing:
1. Street Classification;
2. Critical Design Grade;
3. Calculated Maximum Street Flow Depth; and
4. Maximum Encroachment.
C.2
Storm Sewer
Summary Table of Inlets & Catch Basins reporting for each structure:
1. Location, type, size, rim elevation and depth of the
proposed inlet;
2. 5-year 24-hour design flow to the inlet;
3. Theoretical inlet capacity;
4. Depth of water in the gutter at the inlet;
5. Flow intercepted and flow bypassed; and
6. Street drainage spread width.
Summary Table of Storm Sewer Pipes reporting for each length of pipe:
1. Pipe calculations that state the design peak flow rates
and design information for each pipe run, such as size,
slope, length, material type, and Manning’s coefficient;
2. Velocities at design flow for each segment of proposed
pipe;
3. HGL at each inlet, manhole, angle point, and outlet;
4. Depth from finish grade to pipe invert for each segment
of proposed pipe; and
5. When there is a significant change in slope of the pipe
through a manhole or other structure, the EGL at the
structure assuming the velocity approaches zero.
Detailed design calculations meeting the requirements of Section 6.0 of
the SWDSM as an attachment to this Basis of Design Report.
Basis of Design
SM-06
POST-CONSTRUCTION STORMWATER MANAGEMENT
Basis of Design & Construction Plan Submittal Checklist
(Complete all applicable items)
Page 3 of 6 January 1, 2018
Basis of Design Report
All Construction Plans submitted for review and approval by the City Engineer are to include a Basis of Design Report that
documents how the final designs meet the requirements of the SWDSM and the Conditionally Approved PCSMP.
Item
Description
Yes
N/A
Page
C.3
Culverts
Report shall include the following information documenting the
performance of the culvert:
1. Complete culvert calculations that state the design peak
flow rates, culvert size, slope, inverts, length, material
type, wall thickness, and Manning’s coefficient.
2. Type of end treatment.
3. Headwater depths and water surface elevations for the
design storm events.
4. Velocities at the inlet and outlet for the design storm
events.
5. Flow control type (inlet or outlet).
6. Roadway cross-section and roadway profile.
Detailed design calculations meeting the requirements of Section 6.0 of
the SWDSM as an attachment to this Basis of Design Report.
C.4
Open Channels
When engineered open channels are utilized as a post-construction BMP
include the following information:
1. The size and shape of open channels shall be based on flow
quantities calculated using the hydrologic methods set forth in
Section 4.3.1 of the SWDSM.
2. Post-Construction flows and the maximum Froude number for
each design event.
3. Calculations reporting the velocity and shear stress to support
the channel lining material selection.
4. Graphical profile of the channel longitudinal section reporting
the design slope and 5-year 24-hour and 100-year 24-hour
storm hydraulic grade lines.
5-D
Identification of Parties Responsible for the Operations and
Maintenance of the Post-Construction Stormwater Structural and Non-
Structural BMPs.
Note: O&M Manuals for each approved post-construction BMP shall be
required as a condition of approval of the PCSMP.
6
Construction Schedule & Phasing
A
Narrative of proposed project construction phases and the necessary
future submittal and approvals as required by the SWDSM. For
example, grading project, water sewer project, final site development,
etc.
B
Summary table indicating future PCSMP application materials and
approximate timing. (Updated from Approved SWMP)
Basis of Design
SM-06
POST-CONSTRUCTION STORMWATER MANAGEMENT
Basis of Design & Construction Plan Submittal Checklist
(Complete all applicable items)
Page 4 of 6 January 1, 2018
Basis of Design Report
All Construction Plans submitted for review and approval by the City Engineer are to include a Basis of Design Report that
documents how the final designs meet the requirements of the SWDSM and the Conditionally Approved PCSMP.
Item
Description
Yes
N/A
Page
7
Engineer’s Statement of Compliance & Seal
8
Attachments & Additional Information
A
Post-Construction Hydrologic & Hydraulic Modeling Results
B
Post-Construction Peak Flow Compliance BMP Calculations
C
Post-Construction Water Quality Compliance BMP Calculations
D
Post-Construction Drainage and Conveyance Calculations
Construction Plans
Item
Description
Yes
N/A
Page
A
Public Improvement Construction Plan – Meeting the requirements of
the City of Bismarck CAD Standards.
B
Site Plan – Meeting the requirements of the City of Bismarck Site Plan
submittal requirements.
C
Private Improvement Construction Plans
Design Engineer
All PCSMP application materials; SWMP, Construction Plans, Basis of Design Report, Geotechnical Report and
Certification Report are to be submitted under the seal and signature of a Professional Engineer registered in the State of
North Dakota.
Yes
No
Page
Have all items included in this PCSMP application been
sealed and signed by a Professional Engineer registered in
the State of North Dakota?
Submittal Copies:
1 PDF Copy Uploaded to TRAKiT
Application Fee Paid
Comments:
__________________________________________________________________________________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
Basis of Design
SM-06
POST-CONSTRUCTION STORMWATER MANAGEMENT
Basis of Design & Construction Plan Submittal Checklist
(Complete all applicable items)
Page 5 of 6 January 1, 2018
Required Summary Tables:
(Recreate from Approved SWMP or update with changes as documented in the Basis of Design Report)
Project Hydrologic Modeling Summary – Existing Conditions
Peak Flow (cfs) by Point of Analysis
Storm Event
Point 1
Point 2
2-year 24-hour
5-year 24-hour
10-year 24-hour
100-year 24-hour
Project Hydrologic Modeling Summary – Existing Conditions
Total Volume (acre-feet) by Point of Analysis
Storm Event
Point 1
Point 2
2-year 24-hour
5-year 24-hour
10-year 24-hour
100-year 24-hour
Project Hydrologic Modeling Summary – Post-Construction Conditions
Peak Flow (cfs) by Point of Analysis
Storm Event
Point 1
Point 2
2-year 24-hour
5-year 24-hour
10-year 24-hour
100-year 24-hour
Project Hydrologic Modeling Summary – Post-Construction Conditions
Total Volume (acre-feet) by Point of Analysis
Storm Event
Point 1
Point 2
2-year 24-hour
5-year 24-hour
10-year 24-hour
100-year 24-hour
Basis of Design
SM-06
POST-CONSTRUCTION STORMWATER MANAGEMENT
Basis of Design & Construction Plan Submittal Checklist
(Complete all applicable items)
Page 6 of 6 January 1, 2018
Basin & Outlet Sizing
Approved
Design
Size
Invert
Elevation
Volume
(acre-feet)
Size
Invert
Elevation
Volume
(acre-feet)
Outlet 1
N/A
Outlet 2
N/A
Outlet 3
N/A
Outlet 4
N/A
Outlet 5
N/A
Overflow
N/A
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30208 SM-06 Basis Of Design Checklist (City of BIsmarck)

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Completed 2 August 2020

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