CF-Justice Center-CS 950921To.'
From:
RE:
Date:
Sheri Moreno, Facilities Manager
Kenneth M. Griffin, P.E. Asst. City Manager/City Engineer
Police / Courts Facility Plan Review
September 21, 1995
The Engineering Department has received and reviewed the referenced plans. This review was
limited to the: Dimension Control Plan, Grading and Drainage Plan, Site Utility Plan, Detail
Sheet and Pollution Control Plan, Irrigation Plan, Landscape Plan and the Sidewalk Paving Plan.
The remainder of the plans dealt with the facility itself and were not reviewed 'by the
Engineering Department with the exception of the typical drilled pier detail on Sheet S100.
Based on Larry Davis's experience with construction in this area, there is a question about how
underground water will be handled for the pier locations and whether or not there will be
encasement for the piers.
1. The plat needs to be finalized and submitted through the process for approval by the
Planning and Zoning Commission and City Council.
2. The plan views on various sheets should be revised to be in compliance with the proposed
changes as discussed with Jim Koch. This is mainly in reference to revised drainage concept
and sanitary sewer concepts.
3. The curb return radius should be a minimum of 30 feet to provide for adequate turning
movements for fire trucks.
4. The small two foot openings on both parking lots should be wider to accommodate drainage
and to prevent the openings from becoming clogged. Also, some type of rip rap or other
type of erosion protection should be provided at the outfall.
5. The new parking space size requirement is 9' x 19'. The majority of the spaces shown are
9' x 18'.
6. Are there going to be any landscaped islands in the parking lot as per the City requirements?
7. Why is the handicapped parking on the north side of the building being proposed in an area
that will be removed in the future. The width of the handicapped parking is not compatible
with the width of the other spaces. Therefore, when the handicapped parking is removed
the entire parking lot will need to be reconfigured so that handicapped parking can be
provided. It seems as though that it would be wiser on the front end to locate the
handicapped parking in a location that would not be removed in the future and to put regular
parking spaces in an area that will be removed in the future.
8. Will there be a permanent dumpster located on the site? If so, it should be shown.
9. The sewer serving the facility will need to be reconfigured due to the proposed revision of
the location of the sanitary sewer. It will be located on the north side of the facility as
opposed to being on the west side of the facility.
September 21, 1995
Page 2
Police/Courts Facility Plan Review
10. The roof drains for the west side of the facility are being tied into a storm drainage system.
However, it appears as though the roof drains on the east side of the facility are being
allowed to discharge to the natural ground. Is this your intent? If so, will there be any type
of erosion protection at the outfall of those roof drains?
! 1. The City of Coppell has existing underground sprinkler systems located around Town
Center that could be in conflict with any drainage work. There should be some type of note
to that affect, so that the contractor is held responsible to repair and replace those sprinkler
systems as they are damaged. There is also an existing underground computer link to the
library that should be shown on the plans so as not to be damaged during construction.
Also, a conduit should be provided with this construction to allow for a direct computer link
from City Hall to the Police/Courts facility.
12. The following comments were generated by Howard Pafford, Utility Superintendent.
I would advise that you contact him at 304-3545 to gain clarification of the
comments:
a. Separate fire and domestic water should be provided in the right-of-way.
b. A double check detector check assembly in vault will be required.
13. An erosion control plan that shows the location of the silt fences should be provided. We
are experiencing complaints currently concerning siltation within the lake east of this site.
14. Note//6 on the paving and drainage general notes should be revised to reflect that only RCP
will be allowed under the streets unless otherwise approved by the City Engineer.
15. The joint sealant compound should be a silicon joint sealant.
16. Note #5 under the water and sanitary sewer general notes should be revised to be in
conformance with the Subdivision Ordinance. Which states "mains 10" and smaller should
be class 200 DR 14, mains larger than 10" shall be class 150 DR 18 with an integral bell."
17. Are you not proposing to provide any type of stabilization as required by the Subdivision
Ordinance, for the paving? If it is your intent not to have stabilization, the City has
required that the concrete be a 4000 psi or a minimum 1" thicker.
18. Note #3 under pollution control general notes states that you will be disturbing 11 acres.
An NOI will be required for this site.
19. Various details shown in the plans that are covered in our standard details should be
removed to avoid any confusion.
20. It appears as though the irrigation line adjacem to the roadway is being installed in the same
location as a proposed 8" water line. Therefore, the irrigation line should be moved closer
to the building, possibly out of the 10' easement all together.
21. The landscape plans on the surface appear to be somewhat sparse. Is it the intent to come
back at a later date and provide a more detailed landscape plan?
22. The paving section/expansion joint shown on the sidewalk paving plan appears inconsistent
with the detail previously provided in the plans. These should be consistent and also
consistent with our standard details.
23. All joint locations should be shown on the paving plans.
September 21, 1995
Page 3
Police/Courts Facility Plan Review
24. The paving plan is unclear as to whether or not there will be a sidewalk constructed on the
area immediately south of the driveway, nearest the north side of the facility.
25. Will any brick pavers be installed in the drive approaches?
26. Where are the details for the special paving #1 and//2?
There are various other Engineering comments in the plans that also should be reviewed and
addressed. The Engineering Department would request that once these plans have been revised
that they be resubmitted to the Engineering Department along with the check set for review.
If you should have any questions concerning any comments other than the water comments,
please contact me at your convenience.
file/kgriffin/twnctr.rev