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Outcome |
Est. Completion Date |
Completed |
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Engineering Review
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Corrections
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12/09/2016
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12/09/2016
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Gene Williams, P.E.
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Corrective Action Required
Sheet C.401: The title of this sheet does not appear to match the index sheet. Please rename this sheet "Sanitary Sewer General Layout" to coincide with the index sheet.
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Corrective Action Required
Overview Sheet C.401: The previous submittal showed the sanitary sewer line being installed between Lots 60 and 61. A new alignment is now shown from manhole A-3 to the existing City manhole #60-082. This new alignment places the sanitary sewer in the rear yards of Lot 62 and 61, which is not allowed by the Design and Construction Manual.
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Corrective Action Required
Sheet C.402: The proposed grade appears to be missing between manholes A-3 and the existing City manhole #60-082 (i.e., the proposed grade line ends abruptly to the east of manhole A-3). Please show the proposed grade. Please be aware, however, of the previous comment concerning placement of the sanitary sewer in the rear of the lots.
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Corrective Action Required
Sheet C.402: If the proposed change to the alignment of the sanitary sewer is allowed on the basis of a waiver, the drop at manhole A-3 will need to be upgraded to 0.5 feet rather than 0.2 feet as shown. In addition, the flowline in and out directions do not appear to make sense. It would appear the flowline in direction is from the west, and the flowline out is to the north.
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Corrective Action Required
Sheet C.402: Manhole A-2 is shown with a flowline out to the northwest. Shouldn't this direction be to the east? Also, shouldn't the flowline in direction be from the south? Finally, if this new alignment is allowed by a waiver to the Design and Construction Manual, a minimum 0.5 foot drop is needed rather than 0.4 feet as shown.
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Corrective Action Required
Sheet C.403: Sanitary sewer Line G and Line U appear to contradict each other in terms of labeling. Shouldn't this be named consistently (i.e., Line U or G)? In addition, it is not clear what is being proposed from the plans. Please provide specific instructions on the plans describing that the existing sanitary sewer line downstream of the existing sanitary sewer manhole U1 will remain in place, and new sanitary sewer line will be connected at this point.
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Corrective Action Required
Sheet C.405: The minimum pipe slope is specified for the 10" sanitary sewer. Is there any way to increase this pipe slope to 0.43%? This will allow for some construction tolerance. Please be aware the City will not accept any as-built sanitary sewers which do not meet the minimum standard of 0.42% for the 10" sanitary sewer line.
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Corrective Action Required
Sheet C.405: The private sanitary sewer laterals serving Lots 43 and 44 are shown too close to the manhole and too close to the roadway. Please move the wye connection point for these two lots further west, keeping in mind the four (4) foot minimum separation rule.
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Corrective Action Required
Sheet C.406: It does not appear that a sanitary sewer lateral was shown to serve the future platted lot to the west of Lot 56. Please show the location of the lateral.
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Corrective Action Required
An Engineer's Estimate of Probable Construction Costs appeared missing from the submittal package.
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Engineering Review
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Corrections
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10/13/2016
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10/06/2016
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Gene Williams, P.E.
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Corrective Action Required
Please refer to comment #24 of the previous comment letter dated July 20, 2016. The index sheet does not appear to match the actual plan sheets in terms of sheet numbers or number of sheets.
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Corrective Action Required
Please refer to comment #12 of the previous comment letter dated July 20, 2016. It appears the flowline out direction is mislabeled for manhole A-3. Should this be east rather than north?
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Corrective Action Required
Please refer to comment #13 of the previous comment letter dated July 20, 2016. It appears the flowline in and flowline out direction for manhole A-2 is mislabeled. Should this be east? Also, isn't the flowline out direction northwest rather than northeast?
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Corrective Action Required
Please refer to comment #14 of the previous comment letter dated July 20, 2016. Manhole A-7 appears to have been corrected in terms of flowline in direction, but now the manhole is shown underground by a foot.
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Corrective Action Required
Please refer to comment #17 of the previous comment letter dated July 20, 2016. Manholes B-2, B-3, and A-7 are not shown at proposed grade.
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Corrective Action Required
Please refer to comment #18 of the previous comment letter dated July 20, 2016. Manhole B-3 is shown one (1) foot above finish grade.
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Corrective Action Required
Sheet C.405: The minimum pipe slope for a 10" sanitary sewer line is 0.42%, with a higher slope desirable. All of the pipe slopes shown on the profile view are less than the minimum.
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Corrective Action Required
Sheet C.405: Most of the manholes shown on the profile view are above finish grade for no apparent reason.
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Corrective Action Required
Sheet C.406: Pipe slopes shown on the profile view are too shallow. The minimum pipe slope for 10" sanitary sewer line is 0.42%.
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Corrective Action Required
Sheet C.406: Sanitary Sewer Line C is shown in the profile view with manholes extending above the proposed ground level for no apparent reason.
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Corrective Action Required
Sheet C.406: Manhole D-1 is shown in a sump condition which will not be allowed.
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Corrective Action Required
Sheet C.407: Please refer to comment #22 of the previous comment letter dated July 20, 2016. The standard detail, with tracer wire, was not shown for the private sanitary sewer laterals.
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Corrective Action Required
Sheet C.407: Sanitary sewer pipe encasement detail, casing pipe, and drop manhole details are shown, but it is unclear where these are used on the project. If not used, please remove them.
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Corrective Action Required
Sanitary sewer laterals do not appear to be shown for the off-site portion of the sanitary sewer. Please be aware that all future sanitary sewer laterals will be required to be connected to the main via a cut-in wye.
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Engineering Review
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Corrections
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06/14/2016
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07/20/2016
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Gene Williams, P.E.
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Corrective Action Required
Please change the title block on all sheets to read "The Manor at Stoney Creek 2nd Plat".
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Corrective Action Required
Sheet C.401: Please label the off-site sanitary line as being a possible future connection to the future plat boundary, and not part of these plans.
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Corrective Action Required
Sheet C.401: It appears manhole A-5 is missing a symbol (i.e., it is labeled, but a symbol is missing).
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Corrective Action Required
Sheet C.401: The manhole at the end of the line on the south line of Lot 76 appears to be missing a symbol, and a label.
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Corrective Action Required
Sheet C.401: It appars the sanitary sewer line from D-2 to C-3 can be made with one run, without manhole D-1. Please adjust the sanitary sewer alignment slightly so sanitary sewer line D enters sanitary sewer line C as close to a 90 degree angle as possible.
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Corrective Action Required
Sheet C.401: Off-site easements for the sanitary line being installed across unplatted land will be required prior to issuance of a Certificate of Substantial Completion. These easements should be dedicated sanitary sewer easements rather than general utility easements.
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Corrective Action Required
Manhole E-1, and the area to the west, exceeds the maximum depth of cover. Please submit a written waiver request, including the length of sanitary sewer which will exceed 15 feet of cover, and specific locations (i.e., station to station).
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Corrective Action Required
Manhole A-5 and A-2 appear to exceed the maximum depth of cover. Please see the above comment concerning the submission of a waiver request.
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Corrective Action Required
Sheet C.402: It appears that a drafting remnant is shown on the profile view near station 0+00. Please remove it.
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Corrective Action Required
In order to obtain better slopes for upstream sanitary sewer lines, the flowline in and flowline out for manhole A-6 could be changed to 0.2 feet rather than 0.4 as shown.
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Corrective Action Required
Sheet C.403: It appears the flowline in direction is from the south rather than the west. Also, 0.5 feet of fall is required at this angle.
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Corrective Action Required
Sheet C.402: It appears the flowline out direction for manhole A-3 is east rather than north.
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Corrective Action Required
Sheet C.402: It appears the flowline in direction for manhole A-2 is east rather than south, and the flowline out is northwest rather than northeast.
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Corrective Action Required
Sheet C.404: It appears the flowline in direction for manhole A-7 is south rather than west, and it appear that a 0.5 foot fall is required rather than 0.4 feet.
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Corrective Action Required
Sheet C.404: It appears there is a drafting remnant near station 0+00 on the profile view.
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Corrective Action Required
Sheet C.402: Please show the outgoing pipe elevation at the existing sanitary manhole.
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Corrective Action Required
Sheet C.404: It appears the profile view shows manhole B-2 one (1) foot above finish grade.
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Corrective Action Required
Sheet C.405: It appears manhole B-3 is shown one (1) foot above finish grade.
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Corrective Action Required
Sheet C.406: It appears manhole D-3 is shown well above grade, and manhole D-2 is shown below grade.
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Corrective Action Required
Sheet C.406: Line D is shown too shallow. It would appear that this area could be graded to achieve the proper 3.5 feet of cover, or relocated slightly.
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Corrective Action Required
General Comment: The pipe slopes are shown at minimum slope in many instances. The City recommends the pipe slopes be increased slightly to account for tolerance during construction. In either case, the City will not be able to accept any pipe slope which is less than the minimum slope.
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Corrective Action Required
Sanitary Details: It appears the sanitary wye connection detail was missing. Please ensure the new standard detail is included, which depicts the tracer wire and box.
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Corrective Action Required
Sheet C.400: Please remove this sheet which depicts the possible future sanitary sewer to be extended to the future plat boundary.
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Corrective Action Required
Index Sheet (Cover Sheet): The index of sheets does not match what is shown in the plan set. Please ensure the "Index of Sheets" matches what is shown in the resubmittal.
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