I got some information from the design team wishing to use the TL-5 MwRSF barrier with a footing and having drainage features near the footing.
Erik
_____________________________________________ From: Anderson, William - DOT (Project Development) Sent: Wednesday, December 06, 2017 11:42 AM To: Emerson, Erik - DOT <Erik.Emerson@dot.wi.gov> Subject: FW: TL-5 barrier with inlets
Here is what I got from the Design Team.
_____________________________________________ From: Johansen, Amanda A - DOT Sent: Wednesday, December 06, 2017 10:53 AM To: Anderson, William - DOT (Project Development) <William.Anderson@dot.wi.gov>; Hager, Christopher - DOT <Christopher.Hager@dot.wi.gov> Subject: RE: TL-5 barrier with inlets
Will:
The existing inlets are mostly Type 1 Manholes, two are Type 3 Manholes and one is a Type 5 Manhole (See attached details):
There is no cone section, all appear to be flat slab tops as shown in the following photo:
The covers are Type V.
Attached is a sketch I drew up showing the new TL-5 Median Barrier next to the existing inlets:
I’m not sure if we can gap the manholes to avoid the steel reinforcement stirrups. Here is a photo of some concrete barrier next to an inlet where the reinforcement is gapped.
Let me know if you need some more information.
Thanks,
Amanda A Johansen, P.E.
Wisconsin Department of Transportation
Southeast Region
141 NW Barstow Street
Waukesha, WI 53187
262-521-4465
_____________________________________________ From: Anderson, William - DOT (Project Development) Sent: Wednesday, December 06, 2017 10:27 AM To: Hager, Christopher - DOT <Christopher.Hager@dot.wi.gov>; Johansen, Amanda A - DOT <Amanda.Johansen@dot.wi.gov> Subject: FW: TL-5 barrier with inlets
Can you answer Erik’s question below?
_____________________________________________ From: Emerson, Erik - DOT Sent: Wednesday, December 06, 2017 9:36 AM To: Anderson, William - DOT (Project Development) <William.Anderson@dot.wi.gov> Cc: Stertz, David L - DOT <David.Stertz@dot.wi.gov>; Taylor, Rodney - DOT <Rodney.Taylor@dot.wi.gov> Subject: TL-5 barrier with inlets
Will,
Have you heard from the project team on what type of inlets and inlet covers they would like to use with the TL-5 Midwest barrier?
From the drawings and photos you supplied, it appears that the drainage structure will affect the placement of the support footing/slab of the barrier, but not the barrier itself. If this is in an interior section of the barrier (not end sections near barrier discontinuities), I don’t see this being a big issue. The length of the drainage structure is limited and the majority of the footing will still be able to be cast. Thus, I would just adjust/shorten the width of the footing/slab to fit around the drainage structure. You should modify the stirrups to fit the new shape of the footing/slab as well (the photo below shows a footing/slab with stirrups in the shortened width region).
If the drainage structure affects the barrier cross section or reinforcement from being properly installed, then we may need to adjust a few more things.
Some parts of this site work best with JavaScript enabled.