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15 Submittals/01 Permit - Shortcut.lnk
15 Submittals/20-5028 Submittal #001-B.pdf
15 Submittals/20-5028 Submittal #001-C.pdf
15 Submittals/20-5028 Submittal #001.pdf
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15 Submittals/2020 Storm Improvements - UAC Permit Confirmation.pdf
15 Submittals/NativeGrassMixCIrcleS.docx
WESTERN CONSERVATION SERVICES, INC.
“Serving Montana Since 1975”
Circle S Seed Native Grass Mix
Slender Wheatgrass 24.71%
Western Wheatgrass 9.21 %
Mountain Brome 14.79%
Beardless Wheatgrass 24.24%
Thickspike Wheatgrass 9.97%
Nevada Bluegrass 11.18%
6040 Sypes Canyon Road Bozeman, MT 59715 PH: 406.586.9773 westernconservationservices@live.com
15 Submittals/Pages from SUBV1.pdf
15 Submittals/RE EXTERNAL RE EXT RE Flowable Fill Unit Weight.msg
IPM.Note
RE: [EXTERNAL] RE: [EXT] RE: Flowable Fill Unit Weight
RE:
Adam Oliver
Sky Mason
Adam Oliver
SMTP
Sky.Mason@ContechLLC.com
[EXTERNAL] RE: [EXT] RE: Flowable Fill Unit Weight
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From: Sky Mason <Sky.Mason@ContechLLC.com>
To: Adam Oliver <AOliver@BOZEMAN.NET>
CC: Dennis Dirks <Dennis.Dirks@ContechLLC.com>
Subject: RE: [EXTERNAL] RE: [EXT] RE: Flowable Fill Unit Weight
Thread-Topic: [EXTERNAL] RE: [EXT] RE: Flowable Fill Unit Weight
Thread-Index: AdaigOL/nAHE26TGRvy9Min7o/nAswAAhG+QAASLnrAAIchLwAAz9/IQAAOS9GAAAEl8sAAAGTSwBUQtFNAAAoAPoAAAYbdQATtht3AAL32roAAB1NcQAh76suA=
Date: Mon, 30 Nov 2020 18:45:40 +0000
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Sky Mason
SMTP
Sky.Mason@ContechLLC.com
Dennis Dirks
Adam Oliver
[EXTERNAL] RE: [EXT] RE: Flowable Fill Unit Weight
Hi there, Adam
I got your message. My phone is misbehaving this morning so I’m responding here. We are on track to deliver the CDS by tomorrow if it hasn’t arrived already. We ended up using inserts
and pouring an extension onto the base slab extension which brought it out to ten inches – the original design width. So, yes this is moving forward. If anything changes on our end I
will certainly keep you all posted. Feel free to reach out (my phone should be back on line soon) if you have any other question.
Thank you.
Sky Mason, E.I.
Design Engineer – Stormwater
Contech Engineered Solutions LLC
11815 NE Glenn Widing Drive | Portland, OR 97220
Office: (503) 258-3110 |Fax: (800) 561-1271
smason@conteches.com <mailto:smason@conteches.com>
www.ContechES.com <https://www.conteches.com/>
From: Jeffrey Olsson [mailto:JOlsson@dowl.com]
Sent: Thursday, November 19, 2020 3:44 PM
To: Sky Mason <Sky.Mason@ContechLLC.com>
Cc: Wade Irion <WIrion@dowl.com>; Paul Yakawich <pyakawich@dowl.com>; Anthony Keene <akeene@dowl.com>; Dennis Dirks <Dennis.Dirks@ContechLLC.com>; Stephanie Jacobsen <Stephanie.Jacobsen@ContechLLC.co
m>; Adam Oliver <AOliver@BOZEMAN.NET>
Subject: RE: [EXTERNAL] RE: [EXT] RE: Flowable Fill Unit Weight
Sky. Here are our concerns and suggested modifications. We have a couple of concerns. The 2 inch. thick secondary pour would allow for a very minimal dowel into this secondary pour and
would have very minimal clear cover. This exacerbates the second concern which is the potential for this additional pour to separate from the base during placement and backfill (i.e.,
potential shearing force could break the secondary pour off, particularly since there will be minimal cure at the time of placement). We are OK in concept with the idea of the secondary
pour that has been proposed but would suggest the following modifications/clarifications: 1) use the secondary pour to build the base back out to the 10” base extension originally bid;
2) instead of a straight dowel, provide a hook bar with minimum embedment meeting the epoxy manufacturer’s specifications, 2-inch projection from the base, and an 8-inch hook installed
horizontally at 90 deg. (you may need to check out this would fit with the diameter of the base – I haven’t tried to draw anything to scale). We do not have any exceptions to the top
thickness of the secondary pour or the quantity/spacing of the dowels.
Let me know if you have any questions or concerns.
Jeffrey Olsson, PE, TSP
Senior Water Resources Engineer
DOWL
-
(406) 442-0370 | office
(406) 324-7414 | direct
(406) 202-8436 | cell
-
From: Sky Mason <Sky.Mason@ContechLLC.com <mailto:Sky.Mason@ContechLLC.com> >
Sent: Thursday, November 19, 2020 3:40 PM
To: Jeffrey Olsson <JOlsson@dowl.com <mailto:JOlsson@dowl.com> >
Cc: Wade Irion <WIrion@dowl.com <mailto:WIrion@dowl.com> >; Paul Yakawich <pyakawich@dowl.com <mailto:pyakawich@dowl.com> >; Anthony Keene <akeene@dowl.com <mailto:akeene@dowl.com> >;
Dennis Dirks <Dennis.Dirks@ContechLLC.com <mailto:Dennis.Dirks@ContechLLC.com> >; Stephanie Jacobsen <Stephanie.Jacobsen@ContechLLC.com <mailto:Stephanie.Jacobsen@ContechLLC.com> >;
Adam Oliver <AOliver@BOZEMAN.NET <mailto:AOliver@BOZEMAN.NET> >
Subject: RE: [EXTERNAL] RE: [EXT] RE: Flowable Fill Unit Weight
Hi Jeff
Sorry to press. I know you’re busy and this time-crunch is not your fault at all. I’m writing to check to see if you’ve had a chance to look at the attached proposal? We have to make
this modification as soon as we can in order to have it to your project by the deadline Dec. 1st.
Thanks for your understanding.
Sky Mason, E.I.
Design Engineer – Stormwater
Contech Engineered Solutions LLC
From: Sky Mason
Sent: Wednesday, November 18, 2020 4:12 PM
To: Jeffrey Olsson <JOlsson@dowl.com <mailto:JOlsson@dowl.com> >
Cc: Wade Irion <WIrion@dowl.com <mailto:WIrion@dowl.com> >; Paul Yakawich <pyakawich@dowl.com <mailto:pyakawich@dowl.com> >; Anthony Keene <akeene@dowl.com <mailto:akeene@dowl.com> >;
Dennis Dirks <Dennis.Dirks@ContechLLC.com <mailto:Dennis.Dirks@ContechLLC.com> >; Stephanie Jacobsen <Stephanie.Jacobsen@ContechLLC.com <mailto:Stephanie.Jacobsen@ContechLLC.com> >;
'Adam Oliver' <AOliver@BOZEMAN.NET <mailto:AOliver@BOZEMAN.NET> >
Subject: RE: [EXTERNAL] RE: [EXT] RE: Flowable Fill Unit Weight
Hi there, Jeff
The unit is built and awaiting this final base slab modification. The precaster has proposed a solution that I would like for you to review. Attached is their shop drawing where you
can see that they are extending the base slab extension to the dimensions that you originally approved. They are also covering the top of the original base slab extension which would
make the structure of this secondary pour perform more to your needs by naturally opposing the upwards buoyant force. Below is the description of the precaster’s dowel arrangement:
“I can do whatever the engineer would like.
I would propose #4 Rebar doweled into the base slab. 3" up from the bottom side of the slab. Into the slab 6". I would propose doing a quantity of 6, spaced evenly @ 60°.
This is not an engineered reinforcement schedule. The MH base is already built to ASTM C478, so the added reinforcement would just be to bond the secondary pour to the initial cast of
the structure.”
If this sounds acceptable to you then let me know. We can get this rolling immediately and have it delivered on schedule.
Thanks, Jeff.
Sky Mason, E.I.
Design Engineer – Stormwater
Contech Engineered Solutions LLC
11815 NE Glenn Widing Drive | Portland, OR 97220
Office: (503) 258-3110 |Fax: (800) 561-1271
smason@conteches.com <mailto:smason@conteches.com>
www.ContechES.com <https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwww.conteches.com%2f&c=E,1,GjjkZCMfazMNSniRv84s7eKELoOxLbzyidfPwtMJc-_YPxjoSRJUeT6-kcGqhlwX1NcqS_z2A6MN9b4Jx4QLRSZ9cbaEbUBeNOftP
yK2froqJ574DhY,&typo=1>
From: Adam Oliver [mailto:AOliver@BOZEMAN.NET]
Sent: Thursday, November 12, 2020 10:16 AM
To: Jeffrey Olsson <JOlsson@dowl.com <mailto:JOlsson@dowl.com> >; Sky Mason <Sky.Mason@ContechLLC.com <mailto:Sky.Mason@ContechLLC.com> >
Cc: Wade Irion <WIrion@dowl.com <mailto:WIrion@dowl.com> >; Paul Yakawich <pyakawich@dowl.com <mailto:pyakawich@dowl.com> >; Anthony Keene <akeene@dowl.com <mailto:akeene@dowl.com> >
Subject: RE: [EXTERNAL] RE: [EXT] RE: Flowable Fill Unit Weight
Jeff, with how tight and deep this excavation will be, I would like to make sure that is necessary before we do anything that expands or complicates the bottom of the structure. Smaller
base OD is a benefit if it will work in the long run. Is the concern floatation while the flowable fill cures or long term floatation in groundwater? If the concern is floatation within
the flowable fill, they can rest the bucket of their ~25000kg machine on it while it cures.
Thanks,
Adam
From: Jeffrey Olsson <JOlsson@dowl.com <mailto:JOlsson@dowl.com> >
Sent: Thursday, November 12, 2020 10:19 AM
To: Sky Mason <Sky.Mason@ContechLLC.com <mailto:Sky.Mason@ContechLLC.com> >; Adam Oliver <AOliver@BOZEMAN.NET <mailto:AOliver@BOZEMAN.NET> >
Cc: Wade Irion <WIrion@dowl.com <mailto:WIrion@dowl.com> >; Paul Yakawich <pyakawich@dowl.com <mailto:pyakawich@dowl.com> >; Anthony Keene <akeene@dowl.com <mailto:akeene@dowl.com> >
Subject: RE: [EXTERNAL] RE: [EXT] RE: Flowable Fill Unit Weight
Sky, I was able to get comfortable with the reduction from 10 inches to 8 inches, but rather than reduce it further, I would rather see some dowels into the manhole base and perhaps
a hoop or series of short straight bars tied over the dowels to make sure that we really do develop the additional floatation resistance of the surrounding flowable fill. That would
be my recommendation, what do you think Adam? We know we will have high groundwater at this site. The last thing anybody needs is to see this thing float because of precast limitations;
a few dowels and sticks of rebar to tie the unit into the mass of flowable fill will be an extremely cheap insurance policy. We could have our structural engineer sketch something up,
but given that this really is a precast limitation it probably makes more sense to have the contractor propose something.
Jeffrey Olsson, PE, TSP
Senior Water Resources Engineer
DOWL
-
(406) 442-0370 | office
(406) 324-7414 | direct
(406) 202-8436 | cell
-
From: Sky Mason <Sky.Mason@ContechLLC.com <mailto:Sky.Mason@ContechLLC.com> >
Sent: Thursday, November 12, 2020 9:08 AM
To: Jeffrey Olsson <JOlsson@dowl.com <mailto:JOlsson@dowl.com> >
Cc: Adam Oliver <AOliver@BOZEMAN.NET <mailto:AOliver@BOZEMAN.NET> >
Subject: RE: [EXTERNAL] RE: [EXT] RE: Flowable Fill Unit Weight
Good morning, Jeff.
I ran into a production limitation. The precaster is unable to make the base-slab extension 8 inches wide and instead can only make the extension 6 inches. Would you mind checking to
see if this is sufficient for your buoyancy requirements? If it’s not, then I will look into other options to get you what you need.
Thanks for your time.
Sky Mason, E.I.
Design Engineer – Stormwater
Contech Engineered Solutions LLC
11815 NE Glenn Widing Drive | Portland, OR 97220
Office: (503) 258-3110 |Fax: (800) 561-1271
smason@conteches.com <mailto:smason@conteches.com>
www.ContechES.com <https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwww.conteches.com%2f&c=E,1,4kCVVSdOcOGfQG16Z5N_C0_It8Bi5rRgZ_sWmFlHpPxtp9dDIvMM3psb8WpUGbLqZhsjjBs77oUAL1gzlc1caPIy_lASf8kAJOVMD
a__&typo=1>
From: Jeffrey Olsson [mailto:JOlsson@dowl.com]
Sent: Friday, October 16, 2020 1:41 PM
To: Sky Mason <Sky.Mason@ContechLLC.com <mailto:Sky.Mason@ContechLLC.com> >
Cc: Adam Oliver <AOliver@BOZEMAN.NET <mailto:AOliver@BOZEMAN.NET> >
Subject: RE: [EXTERNAL] RE: [EXT] RE: Flowable Fill Unit Weight
FYI, please route the formal submittal through the Contractor, who will sign it and send it to the City. The City will then (presumably) forward it on to us for final submittal review
assistance. I don’t want to get the submittal review order of reasonability out of whack.
Adam, below is some of the correspondence on the base extension aspect of the CDS unit between DOWL and Contech. I believe we have this element of the submittal resolved, but we’ll want
to give the final submittal quick a once-over when you receive it to make sure the other issues were resolved as well.
Cheers!
Jeffrey Olsson, PE, TSP
Senior Water Resources Engineer
DOWL
-
(406) 442-0370 | office
(406) 324-7414 | direct
(406) 202-8436 | cell
-
From: Sky Mason <Sky.Mason@ContechLLC.com <mailto:Sky.Mason@ContechLLC.com> >
Sent: Friday, October 16, 2020 2:36 PM
To: Jeffrey Olsson <JOlsson@dowl.com <mailto:JOlsson@dowl.com> >
Subject: RE: [EXTERNAL] RE: [EXT] RE: Flowable Fill Unit Weight
Okay. That sounds good. I’m glad it works out. I’ll get that submittal drawing over to you – including the buoyancy calcs – as soon as I can.
Thanks, Jeff. Always a pleasure. You have a good one too.
From: Jeffrey Olsson [mailto:JOlsson@dowl.com]
Sent: Friday, October 16, 2020 1:29 PM
To: Sky Mason <Sky.Mason@ContechLLC.com <mailto:Sky.Mason@ContechLLC.com> >
Subject: [EXTERNAL] RE: [EXT] RE: Flowable Fill Unit Weight
CAUTION: This email originated from outside of the organization. Exercise caution when opening attachments or clicking links, especially from UNKNOWN senders.
The FS similar to what I was getting and, although it is less than I had hoped, I believe any reasonable amount of base extension (given that we’re using flowable fill) will likely activate
a much larger block of weight than the “column” of fill directly over the base extension. We’ll allow the reduction to the 8” base extension. Please proceed with the revised submittal
accordingly. Please also submit final floatation calcs with the submittal (with the draft stamp removed). Thanks, Sky. Have a good weekend, and we’ll be in touch.
Jeffrey Olsson, PE, TSP
Senior Water Resources Engineer
DOWL
-
(406) 442-0370 | office
(406) 324-7414 | direct
(406) 202-8436 | cell
-
From: Sky Mason <Sky.Mason@ContechLLC.com <mailto:Sky.Mason@ContechLLC.com> >
Sent: Friday, October 16, 2020 12:44 PM
To: Jeffrey Olsson <JOlsson@dowl.com <mailto:JOlsson@dowl.com> >
Subject: RE: [EXT] RE: Flowable Fill Unit Weight
Hi Jeff. How do things look on your end? Were the files that I sent you helpful? Can run anything else on my end?
From: Jeffrey Olsson [mailto:JOlsson@dowl.com]
Sent: Thursday, October 15, 2020 11:00 AM
To: Mason, Sky <SMason@conteches.com <mailto:SMason@conteches.com> >
Subject: RE: [EXT] RE: Flowable Fill Unit Weight
Hey, Sky. Can you check your volume calc and then rerun this with an unsaturated backfill unit weight of 102 pcf. I’m showing a FS of 1.4 (groundwater at the ground surface elev. of
4933); I’m curious what you have on your end. Can you also run it with the groundwater elev. at 4931? Thanks.
Jeffrey Olsson, PE, TSP
Senior Water Resources Engineer
DOWL
-
(406) 442-0370 | office
(406) 324-7414 | direct
(406) 202-8436 | cell
-
From: Jeffrey Olsson
Sent: Wednesday, October 14, 2020 8:02 PM
To: Mason, Sky <SMason@conteches.com <mailto:SMason@conteches.com> >
Subject: RE: [EXT] RE: Flowable Fill Unit Weight
Thanks, Sky. After looking through my calcs and updating values based on your design, I’m getting a total weight of 19335 lbs, so very similar to yours. Assuming a unit weight of concrete
of 150 lbs/cf and unit weight of backfill of 130 lbs/cf (flowable fill assumed unit weight – waiting on response from the contractor) I get a FS against floatation of 1.75 using a 10”
base extension. Reducing to an 8” base extension reduces the FS against floatation to 1.6.
One other thing of perhaps not is that in my calcs when I’m attempting to match your design dimensions I get a volume displaced of 287 cf not the 301 cfs that you mentioned over the
phone. The difference in volume has a significant impact on buoyancy; not sure where that difference is coming from.
My thought is to wait to hear what the final unit weight of the flowable fill will be (assuming that is a quick check by the contractor). I understand the need to get this turned around
quickly and into fab. Hopefully we get a quick response from Bryan.
Jeffrey Olsson, PE, TSP
Senior Water Resources Engineer
DOWL
-
(406) 442-0370 | office
(406) 324-7414 | direct
(406) 202-8436 | cell
-
From: Mason, Sky <SMason@conteches.com <mailto:SMason@conteches.com> >
Sent: Wednesday, October 14, 2020 5:41 PM
To: Jeffrey Olsson <JOlsson@dowl.com <mailto:JOlsson@dowl.com> >
Subject: [EXT] RE: Flowable Fill Unit Weight
WARNING: External Sender - use caution when clicking links and opening attachments.
Hi there Jeff
Attached is a snip of the weight of just the concrete for this CDS. This weight does not include the permanent pool of water or the internals.
Looking forward.
Sky Mason, E.I.
Design Engineer – Stormwater
Contech Engineered Solutions LLC
From: Jeffrey Olsson [mailto:JOlsson@dowl.com]
Sent: Wednesday, October 14, 2020 4:34 PM
To: Bryan Petersen <bryan.petersen@centralph.com <mailto:bryan.petersen@centralph.com> >
Cc: Mason, Sky <SMason@conteches.com <mailto:SMason@conteches.com> >; Kyle Mehrens (kmehrens@bozeman.net <mailto:kmehrens@bozeman.net> ) <kmehrens@bozeman.net <mailto:kmehrens@bozeman.net>
>; Adam Oliver <AOliver@BOZEMAN.NET <mailto:AOliver@BOZEMAN.NET> >; Wade Irion <WIrion@dowl.com <mailto:WIrion@dowl.com> >
Subject: Flowable Fill Unit Weight
Hello, Bryan. I’m sure you’re working on a submittal for the flowable fill on the Westridge project still; however, I’m fielding a question from Contech regarding potentially accepting
a reduced base extension of 8 inches (relative to the 10 inches in the design). To help evaluate this it will be necessary to have an estimate of the unit weight of the flowable fill.
Can you check with your supplier on this? As per the plans and MPWSS, we’ve specified an excavatable flowable fill (i.e., 28-day compressive strength in the range of 30 to 150 psi).
Can you send us the unit weight of the flowable fill you’re proposing? I would think your supplier would have this information at their fingertips. Thanks, Bryan. Hope all is well, and
I’ll talk to you soon.
Jeffrey Olsson, PE, TSP
Senior Water Resources Engineer
DOWL
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15 Submittals/RE 2020 Stormwater Improvements.msg
IPM.Note
RE: 2020 Stormwater Improvements
RE:
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Bryan Petersen
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2020 Stormwater Improvements
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From: Bryan Petersen <bryan.petersen@centralph.com>
To: Kellen Gamradt <KGamradt@BOZEMAN.NET>, Adam Oliver <AOliver@BOZEMAN.NET>
CC: Cody Flammond <CFlammond@BOZEMAN.NET>, Kyle Mehrens <KMehrens@BOZEMAN.NET>
Subject: RE: 2020 Stormwater Improvements
Thread-Topic: 2020 Stormwater Improvements
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Bryan Petersen
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bryan.petersen@centralph.com
Cody Flammond; Kyle Mehrens
Kellen Gamradt; Adam Oliver
2020 Stormwater Improvements
Thanks Kellen. I think we can adjust slopes and grades a bit in the field to make it all work this way.
Sincerely,
Bryan Petersen
Project Manager
437 Floss Flats Road
Belgrade, MT 59714
Phone: 406.388.1000
Cell: 406.922.1454
www.centralph.com <http://www.centralph.com/>
www.centralexcavation.com <http://www.centralexcavation.com/>
From: Kellen Gamradt <KGamradt@BOZEMAN.NET>
Sent: Thursday, October 1, 2020 11:48 AM
To: Bryan Petersen <bryan.petersen@centralph.com>; Adam Oliver <AOliver@BOZEMAN.NET>
Cc: Cody Flammond <CFlammond@BOZEMAN.NET>; Kyle Mehrens <KMehrens@BOZEMAN.NET>
Subject: RE: 2020 Stormwater Improvements
Bryan,
I’m fine with your proposed changes and grouting the penetrations.
Thanks,
City of Bozeman MT
Kellen Gamradt, PE| Engineer II
o: 406.582.2283
c: 406.579.9643
kgamradt@bozeman.net <mailto:kgamradt@bozeman.net>
From: Bryan Petersen <bryan.petersen@centralph.com>
Sent: Thursday, October 1, 2020 11:27 AM
To: Adam Oliver <AOliver@BOZEMAN.NET>
Cc: Kellen Gamradt <KGamradt@BOZEMAN.NET>; Cody Flammond <CFlammond@BOZEMAN.NET>; Kyle Mehrens <KMehrens@BOZEMAN.NET>
Subject: 2020 Stormwater Improvements
Adam,
Thanks for the return call. As we discussed we have a few questions on the inlets on South 20th and on Spruce. I have attached the cut sheets from Anderson Precast and you can see
that the top of the 12” pipe is a couple inches into the lids of the structures. It looks to me like we need to drop the pipe about 4 inches at 20th and about 2 inches at Spruce. In
both cases this would leave the top of the pipe at the top of the barrel which means that we would not have room for a rubber PSX boot. We would have to use a knock out and grout.
I have attached the shop drawings for reference. Once we come up with a solution I will have these re-drawn for formal submittal
Sincerely,
Bryan Petersen
Project Manager
437 Floss Flats Road
Belgrade, MT 59714
Phone: 406.388.1000
Cell: 406.922.1454
www.centralph.com <http://www.centralph.com/>
www.centralexcavation.com <http://www.centralexcavation.com/>
City of Bozeman emails are subject to the Right to Know provisions of Montana’s Constitution (Art. II, Sect. 9) and may be considered a “public record” pursuant to Title 2, Chpt. 6,
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15 Submittals/Submittal 001-B_reviewed.pdf
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