ITEM 3.5 Updates of Engineering Manualr'
0tsP
TY o
MINNESOTA V
DEPARTMENT INFORMATION
Request for
City Council Action
ORIGINATING DEPARTMENT
REQUESTOR:
MEETING DATE:
Public Works
City Engineer Wagner
March 26, 2018
PRESENTER(s)
REVIEWED BY:
ITEM #:
Consent Agenda
City Administrator/Finance Director
Flaherty
3.5
AGENDA ITEM DETAILS
RECOMMENDATION:
Staff recommends that the City Council approval the 2018 updates to the City of Otsego Engineering
Manual.
ARE YOU SEEKING APPROVAL OF A CONTRACT?
IS A PUBLIC HEARING REQUIRED?
No
No
BACKGROUND/JUSTIFICATION:
The City of Otsego Engineering Manual is updated every few years in order to update best
management practices or incorporate new procedures and technology. Since the last Engineering Manual
update MnDOT has updated their specifications in 2016 and 2018. Much of the City's standards and
specifications refer to the MnDOT specifications. The Engineering Manual now includes the most recent
changes made by MnDOT.
Hakanson Anderson has met with the City's Street and Utilities department staff as well as
consulted with various industry professionals to determine recommended changes. The supporting
documents attached outlines the changes proposed to the manual.
SUPPORTING DOCUMENTS ATTACHED:
• 2018 Engineering Manual Update — Summary of Revisions
POSSIBLE MOTION
PLEASE WORD MOTION AS YOU WOULD LIKE IT TO APPEAR IN THE MINUTES:
Motion to approve the 2018 updates to the City of Otsego Engineering Manual
BUDGET INFORMATION
FUNDING: BUDGETED:
n/a n/a
2018 ENGINEERING MANUAL UPDATE
Summary of Revisions
City of Otsego
ENGINEERING MANUAL
I. Engineering Requirements
I.10, Initial City Acceptance: revised to "Upon completion of all the work
required, the developer must schedule a walk-thru. The developer, the
contractor, the City street maintenance department, City utility
department, and the City Engineer or their representative ..."
2. I.10.e, revised to "...These as-builts shall be submitted prior to the initial
acceptance walk-thru within 30 days after the eomp=etion of
is and be f fe ^ seetifity_is ..010^se 7 "
3. 1. 13.b revised to "...equipment furnished by him for a period of two years from
the date of written acceptance of the work or project, unless the wearing
course is placed during the same construction season as the base course.
In those instances, the contractor shall guarantee all work including street
construction, concrete curb and gutter, material and equipment furnished
by him for a period of three years from the date of written acceptance..."
II. Erosion Control Policy
1. II.2.i, revised to "...The subdivider's obligations under this paragraph shall end
upon final city acceptance. -P a of one (` year f+em when the stme
have been eompleted and aeeepted by the G4y."
2. 11.3J, revised to "...the subdivision from sediment and debris from the
subdivision until final city acceptance.. f a fiod of one (1` f+oin
the stivets have been eeffipleted atid aeeepted by the City."
III. City Standard Plans
111. Lin, revised to:
Right of way and pavement or curb and gutter alignment data shall be
shown. Right of way shall be rounded at intersections (as follows) (min 10'
to allow for utility installation;
i. Minimum 4' radius ROW at intersections for local to local
roadways.
SAMunicipal\AOTSEG0\920\2018 Eng Manual\2018 ENG MANUAL_SUMMARY.doc
ii. Minimum 3' radius ROW at intersections for collector to local
roadways.
IV. City Standard Materials
Storm Sewer and Drainage Pipe
IV.2.a, revised to the following;
a. All storm sewer pipe within any street right-of-way shall be;
i. Reinforced concrete pipe of the class as shown on the plans. Pipe shall meet
Mn/DOT 3236 Specification. Joints shall be flexible watertight meeting
ASTM C-443. Required minimum cover as shown in Appendix C section 5.G.
ii. Polypropylene (PP) dual -wall pipe with couplings and fittings meeting the
requirements of MnDOT 2503 and Technical Memorandum No. 17-05-B-02.
Required minimum cover as shown in Appendix C section 5.G.
2. IV.2.c, revised to "Articulated concrete block or cable concrete ...Selected
material shall be sized to meet the designed bed shear and in accordance with
MnDOT Table 3604-1 (minimum Type B, 15 lb/sq.ft. bed design shear).
withstand „ ,,,;,,;mum of 24 ps f sheat! stress and 19 fps veleeity. blanket
conforming to..."
3. IV.2.g, revised to "Draintile pipe shall be perforated solid smooth PVC pipe
(perforated or unperforated) conforming to MnDOT 3245 7Thertn,,plasti p pe or
Ger-Fugated Polyethylene Drainage bing-eanf6H�to T' n4 DOT 32,15 OF 3279
respeetively, and shall be installed..."
Metal Sewer Frames and Castings — 2621.2B
4. IV.3.a revised to Castings for sanitary sewer manholes shall be H mi fte Kent
Lifespan Syste,,, Neenah R-1642 or approved equal
Manhole and Catchbasin Structure
IV.4.b revised "... catchbasins identified on the plans as slab top shall •be
eanstrueted 4em pipe manufaetared to meet MnDOT 4022 and/or ASTM C-
76 Standards. M;,,,.r,,,,, Class 3 stre ig4y.
Removed all of IV.4.c.
Watermain and Appurtenances:
7. IV.5.c, add the following
SAMunicipal\AOTSEG0\920\2018 Eng Manual\2018 ENG MANUAL SUMMARY.doc
"All valve boxes shall require the installation of a valve box alignment device.
Valve box alignment device shall be Gate Valve Adaptor or the Valve Box
Adaptor #6 Base as manufactured by Adaptor Inc. or approved equal. The
Gate Valve Adaptor shall be used for installations above the water table and
Valve Box Adaptor #6 Base shall be used for installations below the water
table."
Tracer Wire
8. IV.7. added the following;
IV.7.c Tracer wire access box shall be one of three listed below, as
determined by the City Engineer:
i. Non -Roadway access box - Grade level Copperhead adjustable lite
duty Part # LD14*TP
ii. Concrete / Driveway access box - Grade level Copperhead Part #
CD14*TP 14"
iii. Fire hydrant access box - Above ground two terminal Cobra Test
Station, denoting "F" includes hydrant mounting flange.
Copperhead part # T2*-FLPKG-5/8 to fit hydrants with 5/8" bolts
and T2*FLPKG-3/4 to fit hydrants with 3/4" bolts.
IV.7.d See Otsego Standard Detail 4209 for tracer wire installation
requirements.
V. Testing Requirements
Class 3 or 4 Aggregate
V.3.b, revised to revised to "Gradation Test: 1 test per source of material or
minimum I test daily while placing."
Street Base Aggregate
2. V.4.d, revised to "Test Rolling: Required on full Class 5 section (i.e. not under
curb) As FeEltil as 1.., G,fi, OF -JeGA
Bituminous Tests
V.5.a, revised to "...One core will be taken for every 500 tons placed ...At
discretion of the City Engineer, bituminous paths may be tested by
quality/ordinary compaction."
SA\Municipal\AOTSEG0\920\2018 Eng Manual\2018 ENG MANUAL_SUMMARY.doe
4. V.5.c, revised to "Thickness: All cores shall be measured for in-place thickness at
the time the cores are taken."
Tracer Wire
5. V.I Li, revised to "All new tracer wire shall be located using typical low
frequency (512Hz) line tracing equipment. Continuity testing in lieu of actual line
tracing shall not be accepted. Testing shall be performed on all tracer wire within
7 days of satisfactory completion of the all other required testing on the associated
utility."
VI. Construction Requirements
Storm Sewer
Add VI.2 revised to "Pipe sewers shall be installed in accordance with CEAM
2621 and MnDOT 2501, except as modified herein (See Appendix C section 5.g
for additional storm sewer requirements."
Cold Weather Construction
2. VI.6.d.iii, revised to "Inlet protection (i.e. Wimco's) shall remain in place
throughout the winter unless the inlet protection is causing flooding or other
safety hazard. The contractor/developer shall remedy the issue using methods
allowed by the NPDES permit.h d f+e+n eateh basins a4er the g nd has
f+azen. They shall be reinstalled i, the spFin
X. Miscellaneous
1. X.10, revised to "...On Saturdays, the hours will be from 8:00 a.m. to 5:00 g 98
p.m..."
APPENDIX A - STANDARD PLATES
Revised the following Standard Plates:
100 Local Residential Rural Street Section — 9 Ton
101 Local Residential (Pre 2003) Urban Street Section — 9 Ton
102 Local Commercial/Industrial Rural Street Section — 10 Ton
103 MSA Collector Urban Street Section — 10 Ton
109 Typical Driveway
110 Local Residential PUD Private Street — 9 Ton
111 Private Commercial/Industrial Urban Street Section — 10 Ton
112 Local Residential Urban Street Section — 9 Ton
113 Industrial Collector Urban Street Section —10 Ton
114 Local Industrial Urban Street Section — 10 Ton
115 Local Commercial Urban Street Section — 10 Ton
S:\Municipa1\A0TSEG0\920\2018 Eng Manual\2018 ENG MANUAL_SUMMARY.doc
201 Water Service Detail (Greater than 2")
203 Pacer Traffic Flange Hydrant
204 Hydrant & Hydrant Gate Valve Detail
205 Typical Resilient Wedge Valve & Box Installation — 10" & under Waterrnain
206 Typical Butterfly Valve & Box Installation — 12" & over Watermain
208 Seepage Pit
209 Tracer Wire (NEW)
210 Irrigation Service (NEW)
300 Sanitary Sewer Standard Manhole
301 Typical Water Tight Seals
305 Standard Monolithic Drop Manhole
307 Sanitary Manhole Frame and Casting
312 Forcemain Air/Vacuum Valve
313 Forcemain Cleanout
400 Slab -Top Manhole
401 Storm Sewer Standard Manhole
408 Standard Storm Manhole — Yard Inlet
409 27" Precast Catch Basin Yard Inlet
411 Transverse Permeable Aggregate Base (P.A.B) Drain
412 Longitudinal Permeable Aggregate Base (P.A.B) Drain
413 Rear Yard Drain Tile
707 Typical Section — Bike Trail
APPENDIX C - STORMWATER DRAINAGE POLICY
5.0 Calculations and Considerations
5.B, updated 24-hour rainfall amounts for 2 year, 25 year, 50 year, and 100 year
events to match Tables 2 & 3 of Appendix C.
2. 5.E.1, added "...On linear street projects, the required dead storage volume may
be reduced to meet only the current MCPA NDPES required volume
5.G.2. revised to require all pipe from the water's edge to the first structure to be
RCP and to require all pipe outlets/inlets shall have aprons. Also defined required
minimum cover, where and when reinforced concrete (RCP), Polypropylene pipe
(PP), and high density polyethelyne pipe (HDPE) can be used.
APPENDIX D - STREET CONSTRUCTION SPECIFICATIONS
LOLA, revised to reference the 2018 edition of the MnDOT Standard
Specifications for Construction and the latest edition of the Minnesota Manual on
Uniform Traffic Control Devices (MNUTCD).
2. 1.01.13, revised to reference the latest edition of the Minnesota Manual on
Uniform Traffic Control Devices (MNUTCD).
SAMunicipal\AOTSEG0\920\2018 Eng Manual\2018 ENG MANUAL_SUMMARY.doc
-3-: 2.04.C, revised turf establishment to "permanent erosion control measures shall
be achieved in accordance with current City of Otsego MS4 Permit and NPDES
General Construction Permit." "fit Management Praetice-s f^��'Minnesota", o*,dated
Oetaber 1999 as prepared by the Minnesota Pellution Gentrol Ageney, Div
of `xi rrr a eF QuaW.
4. 3.01, added "Mn/DOT Grading and Base Form 104 shall be submitted 1 week in
advance."
5. 3.04, revised to reference current MnDOT Super Pave (SP) mixture designations.
Also added "Minimum asphalt binder grade shall be "C". No RAP material shall
be allowed in the top lift of bituminous."
6. 4.02, added second paragraph "Minimum 4 foot radius ROW shall be used at
intersections for local to local streets, and minimum 3 foot radius ROW shalt be
used at intersections for collector to local streets."
7. Updated design consideration dimensions for Urban and Rural roadway design to
match current Zoning and Subdivision Ordinances as follows:
Urban Desiqn
Rural Design
Pavement
Back to Back
Street
RNV Width
Width
Curb Width
Arterial
100'
54'
55.34'
Collector
80'
41.7'
46'
Local (residential)
60'
23.3'
28'
Local
80'
41.7'
46'
(commercial/industrial)
Cul-de-sac turnaround
60' radius
47'7
radius
50' radius
(commercial/industrial)
Rural Design
(commercial/industrial)
SA\Municipal\A0TSEG0\920\2018 Eng Manual\2018 ENG MANUAL_SUMMARY.doc
Pavement
Paved
Street
RNV Width
Width
Shoulder Width
Arterial
120'
48'
4'
Collector
84'
40'
2'
Local (residential)
60'
24'
4'
Local
84'
40'
2'
(commercial/industrial)
Cul-de-sac turnaround
60' radius
50' radius
4'
(commercial/industrial)
SA\Municipal\A0TSEG0\920\2018 Eng Manual\2018 ENG MANUAL_SUMMARY.doc
8. 4.02, Added to 4th paragraph "a minimum 250' horizontal curve shall be used for
all local residential streets except where a 90' curve is allowed by the City
Engineer. A minimum 40' vertical curve will be allowed at intersections on the
stopping street to allow for better drainage."
9. 4.02, Added 9th paragraph "corner radii: Roadways of street intersections shall be
rounded by a radius of not less than twenty (20) feet. Corners at entrances to the
turnaround portions of cul-de-sacs shall be rounded by a radius of not less than
twenty (20) feet. Corner radius to arterial and collector streets shall be no less
than fifty (50) feet."
APPENDIX E - LIFT STATION DESIGN SPECIFICATIONS
1. 1.0I.A.1, revised to "Current edition of "Standard Specifications for Trench
Excavation and Backfill / Surface Restoration, Watermain and Service Line
Installation, Sanitary Sewer and Storm Sewer Installation" as published by the
City Engineers Association of Minnesota, (CEAM) 1999 Editie .
2. 2.06, Revised to require lift station electrical service be 480vac three-phase power
only.
2.07,K.6, Added "runtime meters shall be located in top 20% of control panel"
4. 2.10, Added that control panel lights shall be LED and runtime meters shall be
located in top 20% of control panel.
Changed spare part requirements to only include "impeller, trimmed for the
correct operating point or parts pre City Engineer's request.
6. Changed operation and maintenance manual requirements from 5 hard copies to 3
hard copies and an electronic cop (.pdf). Also, O&M manuals shall be specific to
products used at this lift station.
S:\Municipa1\AOTSEGO\920\2018 Eng Manual\2018 ENG MANUAL SUMMARY.doc