ITEM 3.15 Change in Engineering Manual0
OtkgoF
MINNESOTA V
DEPARTMENT INFORMATION
Request for
City Council Action
ORIGINATING DEPARTMENT:
REQUESTOR:
MEETING DATE:
Public Works
City Engineer Wagner
September 22, 2014
PRESENTER(s):
REVIEWED BY:
ITEM #:
Consent
City Administrator Johnson
3.15
AGENDA ITEM DETAILS
RECOMMENDATION:
Staff recommends approving changing standard plate for Sanitary Manholes within the City to
incorporate a new chimney system.
ARE YOU SEEKING APPROVAL OF A CONTRACT?
No
IS A PUBLIC HEARING REQUIRED?
No
BACKGROUND/JUSTIFICATION:
Over the years we have been progressing towards a better system in which the cast iron casting at the
surface is integrated with the concrete manhole. For years it has always been a matter of concrete 2"
thick rings with mortar. This method has several issues that cause both infiltrations of storm water and
sometimes ground water into the sanitary sewer system along with sand. The loss of sand under the
asphalt street then causes street failure around the manhole lid. The other issue is frost expansion
lifting the casting free of the concrete manhole compromising all integrity of the rings and mortar.
Too eliminate those issues the City instituted a "Hamilton Kent" product which alleviated much of the
issues and the casting is made of a rubber material and is bolted to the concrete manhole. All of the
rings were also made of the rubber material. The issues with this product are cost, availability, and the
lid had to be "locked" to the rubber casting to prevent bounce. The rings only came in 2" widths while
the final lift of our streets is normally 1 %". The lid is also quite heavy in comparison to normal lids. Due
to the extra cost and issues we the City instituted this method in only clay soils.
Ess Brothers, a local firm, has developed a new method that we have allowed and would like to
incorporate as a standard throughout the City negating the differences between the sand and clay soils
and negating the need for an interior chimney seal.
The method uses a standard manhole lid but uses HDPE rings, cast iron casting which is bolted to the
concrete manhole. The casting and rings are sealed to one another using butyl. The entire system is
wrapped with a water tight skirt. This method is much cheaper and has been used on several new
manholes within the City with much success. Kurt, I and Kevin would like to make this the standard
immediately for all City manholes regardless of where they are in the City.
I have attached several brochures, drawings and specs showing how the system works and if approved
we would prepare a City of Otsego standard plate for inclusion in the Otsego Engineering Manuel.
Public Works Subcommittee reviewed the changes requested Sept. 16th and agreed with staff's
recommendations and requested this item be place on consent agenda for Council approval.
SUPPORTING DOCUMENTS: X ATTACHED NONE
• Various Brochures, Specs, Details & Technical drawings
MOTION: (Please word motion as you would like it to appear in the minutes.)
Motion to approve changing the sanitary sewer manhole standard plate in the Engineering Manuel to
reflect staff recommended changes to the chimney portion of the manhole.
R11DGET INFORMATION
FUNDING: BUDGETED: X YES
None needed
NO
ACTION TAKEN
❑ APPROVED AS REQUESTED ❑ DENIED ❑ TABLED ❑ OTHER (List changes)
COMMENTS:
Mstaflaflon Procedures
�1
Neenah 1916-F
Infi-Shield External Seal
Ladtech Sealant
HDPE Rings
Concrete Anchors
Install rings to the required height.
2
Be sure the HDPE rings are aligned
so the holes match LIP.
F,
Set the 1916-F in Place. Be sure to
align the hole in the 1916-F frame
with the Ladtech ring holes.
Once the HDPE rings and casting
4 are in Place, use a marker to indi-
cate where each concrete anchor
will be drilled to the cone/slab.
Ess Brothers and Sons Inc.
9350 County Road 19 • Loretto, TtiN 55357
763-478-2027 • 800-478-2027 • Fax 763-478-8868
v 9-41MF
:.
,BROTHERS & SONS, JNC,
Y
Ess Brothers and Sons Inc.
9350 County Road 19 • Loretto, MN 55357
763-478-2027.800-478-2027•Fax 763-478-8868
5 Apply Ladtech sealant to the con-
crete cone/slab and between each
ring.
6 Install 4 concrete anchors with rods
through HDPE rings to cone.
Before installing the Infi-Shield
7
external seal clean all surfaces with a
wire brush and wisk broom. Pull seal
into position and remove butyl protect-
ed tape.
You may now backfill with a perma-
8 nent seal between the manhole frame
and the cone, including the entire ad-
justment area.
VA;�)F - Oki
Cal
BROTHERS&SONS, I=
35
/L-� J• I u V L,
F L 8 T � C H � H U -i 3
SLOPED RINGS
LADTECH SEALANT
Adjusting
Ring
v Sub
0' afoul
H.D.P.
Ring]
ESS 6HOTWERS AND SONS, INC. IVIEi'110: /63.178-2027 OUT-STAYL: 1.800.478-2027 FAX: 763-M-8868
MAN HOLE CASTING-.--.1*j,
U.P.r:.
PLAS 1CAU.TUSTI\G RING
E�?
CONCRL'CC,1tANIiDLE+�,�
A specially formulated sealant for
11+D RE, Plastic Adjusting
(Grade) Ituigs.
.r,
+fr •
LADTECH SEALANT
Adjusting
Ring
v Sub
0' afoul
H.D.P.
Ring]
ESS 6HOTWERS AND SONS, INC. IVIEi'110: /63.178-2027 OUT-STAYL: 1.800.478-2027 FAX: 763-M-8868
22
EBS SUPER GLUE...
THE ADHESIVE
FOR MANHOLE
CASTINGS AND
ADJUSTMENT RINGS
EBS SUPER GLUE Is A .Revolutionary
New Construction Adhesive, That
When Used As Directed, Provides
Supenor Adhesion. EBS SUPER
GLUE Is Safe And Can Be Used
Under Adverse Weather Condi-
tions In Temperatures Ranging
FYom -00 To 400°F.
EBS SUPER GLUE is compatible with all metal,
concrete and wood materials. To ensure
positive adhesion, make sure the surfaces to
be joined together are clean and free of dirt
and foreign materials. Use mechanical
fasteners to hold the surface in place until
the adhesive fully cures. Drying time may
vary depending on the humidity, However,
under most conditions, you can expect a
permanent bond in 10-12 hours with
complete cure in 72 hours.
EBS supak c m CiL'L. 1 Tf'rtL 105
Exceeds VOC Compliance Regulations
Yes
Environmentally Safest Grade
special Storage
NO
Workability Below Reeftng
F:•:<:-L'c:;t
Permanent Ovemight Bond
les
flammability
' i 7 s: -,1.•a' n`
High Heat Resistance (cured)
4000
Vapor lbxicity
N_Dne
Shrinkage
Nil
Chemical Resislonce
L •:c L•=r a
Bonds Metal, Concrele, Wood
Yas
Wa ler Resistance
L•:ceilc nt
Bonding Temperature Range
- O' TO f0'J°7
°r
ESS I3I►0THEEIS AND SOPS, INC. �"EETRO: Y63 -470.202Y OUT -STATE: 1.000.478-2027 FAX: 76MYB=9868
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MANHOLES
-_ CATCH BASINS
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ESS BROYHERS AND SONS, INC. PACTRO: 762-478.2027 OUT -STATE: 1.800-478.2027 FAX: 763-478.8868
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EXTERNAL SEAL
NOTES: 1. Install the Infi-shield External Seal on the outside surface of the
adjustment ring area covering all grade rings.
2. Spray primer to areas where attaching non hardening butyl mastic
to casting flange and cone section
3. Attach inspection lab to manhole lid and backfill
4. Contact Sealing Systems Inc. for additional installation instructions
or any other product information at 800.478-2054
June 2001 Infi-shield External I No Scale
Manhole Sealing Detail
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