Questions_and_Answers_-_El_Reno_Final.pdf

QUESTIONS AND ANSWERS

FCI EL RENO – REPAIR TUNNEL

IFBP05071600003 - PROJECT 5C4T

PWE, INCORPORATED:

1. Page S2.1 detail 16 shows a full depth ceiling repair at the elevator pit area. Access to this area was not allowed at either the first walk thru or the one today. The prison representatives informed us that they have never seen the elevator pit area and that they do not believe there is access to that area other than the existing hole. How are we expected to perform the full depth repair if we can not access the area from above? Can you provide pictures of this area and a diagram or, as built drawings showing how the elevator pit area is supported.

We are unsure where the shoring will be needed, or how to engineer it.

CLARIFICATION: Upon further investigation, it is believed this area is NOT part of the elevator pit in Education building, although it’s in reasonably close proximity. The damaged area can’t be accessed directly from the Education building above, and an open void of several feet exists between the ceiling of the tunnel and the floor of Education building. In order to complete repairs, the contractor may have to cut a hole adjacent to the repair location for access or do some unique forming after the noted ceiling area is fully removed. Cutting an access hole into the floor of Education building is most likely not feasible for security reasons. This particular repair will require a little ingenuity on the contractor’s part as far as means and methods.

CHANGE: See Amendment 0004, date 08/24/2016. Amend Item #34, Sheet S0.1 to remove the verbiage “Elevator Pit.” Amend Detail 16, Sheet S2.1 to read “Ceiling Repair @ Keynote 34.”

2. During the walk thru we measured some of the areas that are scheduled to receive repairs. In one case a crack that was listed as 10’ long measured over 35’ long. In addition, many of the wall and ceiling repairs appeared to be considerably larger then estimates given in the plans. On Page SO.1 under “General Notes” it states that locations and quantities of concrete damages are approximate and that the contractor should field verify all quantities. There was not time allotted to sound all areas and determine, thru survey, accurate quantities for all the repairs. Did the figures provided in the “Tunnel Damage Schedule” take into account the 2’ splice distance? In other words if the horizontal width of the wall repair is listed to be 10’ and you need two feet of splice on each end, then the patched area would actually be 14’ wide, after exposing the sound rebar. Has this been taken into consideration in the measurements listed? Or if it says 10’ wide does that mean that the actual damage is thought to be 6’?

CLARIFICATION: The scope of work for this project was based on visual observations of the designer, not extensive testing. The repair area locations and square footage shall be as specified on the drawings, which take into account splice distance as noted on ceiling and wall patch details on sheet S2.1.

3. On many of the ceiling repairs reinforcement is completely deteriorated. In order to perform the repairs safely, shoring of the ceilings will be required to prevent of additional structural damage from occurring while material is removed during prep of the area. Who will be responsible for engineering the shoring required?

CHANGE: See Amendment 0004, date 08/24/2016. Amend Sheet S0.1 to add the following general note, “The contractor shall be responsible for all aspects of shoring, both engineering and installation.”

4. The notes on the following pages produce a double image and are difficult to read:

1. G0.1 - Project General Notes

2. PO.0 - Piping General Notes

3. Tunnel Steam Phasing Plan

4. Piping Line symbols

5. EO.1 - Electrical General Notes

6. MO.1 - Mechanical General Notes

CLARIFICATION: We are not sure why you are having difficulty reading the above drawing sheets. We just printed them in half-size (11” x 17”) and had no problem reading the notes. Please try adjusting your printer settings. You can also enlarge the drawings in Adobe Reader to read the text more easily.

5. On the “Tunnel Steam Phasing Plan” it says see note 18 on page DP1.1 - I do not see a note 18 on that page. Is it referring to note 18 on P0.0?

CLARIFICATION: The intent of the “Tunnel Steam Phasing Plan” is to inform the contractor about restrictions related to the required steam piping work, namely that Food Service shall receive steam continuously and the contractor shall plan accordingly due to this. CLARIFICATION

CHANGE: See Amendment 0004, date 08/24/2016. Amend “Tunnel Steam Phasing Plan” diagram note to read, “Kitchen Loads, See Sheet DP1.1, Note 4.”

6. On a wall repair that is from floor to ceiling or a ceiling repair that is from wall to wall there are multiple areas where all the rebar is badly corroded and in need of replacement. When this is encountered, making a 2’ splice impossible because the rebar is corroded at the edges of repair (where wall intersects with ceiling or ceiling intersects with wall) we plan to drill and epoxy rebar tie bars into the exposed concrete adjacent to the existing corroded rebar. Is that the intent of item #6 under CRP-1 “Repair of Exposed Reinforcement” ?

CLARIFICATION: Yes, it is.

7. Based on our survey during the walk thru the rebar will need to be replaced in almost all (over 90%) of the areas where spalling has occurred. Since you need to have patching material behind the new reinforcement, and the cover over the rebar is a minimum of 3/4”, you will need a minimum of 2-1/2” to make the patch according to ACI standards. The table on page S0.1 lists the depth of many of the repairs at 2”. Does this mean you are approving less then the recommended material behind or in front of the bars? Or is the depth just an approximation and it is understood that to perform the repair as recommended the depth should be 2-1/2” - 3-1/2” on all repairs.

CLARIFICATION: The 2” was an approximation as to the depth of the damage from finished surface. We agree that in order to repair these areas in accordance with ACI, removal to 2-1/2” depth would be the minimum.

CHANGE: See Amendment 0004, date 08/24/2016. Amend column “T” on “Tunnel Damage Schedule” Sheet S0.1 to replace all instances of 2” repair thickness with 2-1/2” repair thickness. Column “V” will therefore change as a result. The contractor shall be responsible to calculate new patch volumes in each case.

AIP ENTERPRISES, LLC

Electrical

1. Can the conduit be replaced with PVC to prevent future rust/conduit failure?

CLARFICATION: No, electrical conduit shall be as specified.

2. Can a large gutter or cable tray be installed with tray cable to clean up the electrical conduits?

CLARIFICATION: A gutter may be approved for specific cases less than 3’ in total length in order to clean up conduit connections to surface-mount electrical panels. Gutters will not be allowed otherwise.

3. Is there a classification for this project location?

CLARIFICATION: Although the utility tunnel experiences occasional water intrusion, it is not at a level that would necessitate broadly reclassifying electrical equipment for damp locations or unnecessarily upgrading all electrical enclosure types.

4. Boxes listed on plans are to be NEMA 4X, do light fixtures need to meet the same NEMA requirements? If so, existing fixture schedule will need to be updated.

CLARIFICATION: No, it was decided to upgrade electrical panels only. Damp location-rated light fixtures are not required.

5. Will electrical outages be schedule during normal working hours?

CLARIFICATION: Temporary disruptions during normal working hours may be allowed if they are minimized, well-coordinated, and occur outside of peak use times.

Plumbing

1. What date(s) is the heating water active/inactive to perform our temporary tie ins/piping relocates?

CLARIFICATION: Domestic hot water is always active within the tunnel. It supplies Food Service (dish machine/cleaning), and Education and Administration.

Temporary disruptions for tie-ins must be minimized, well-coordinated, and occur outside of peak use times.

2. What date(s) is the steam active/inactive to perform our temporary tie ins/piping relocates?

CLARIFICATION: Steam is shut down to all locations except Food Service and Laundry from April-October, as noted on drawing sheet P0.0. Temporary disruptions outside of this timeframe for tie-ins may be allowed if they are minimized, well-coordinated, and occur outside of peak use times.

3. What operating pressure is the steam system?

CLARIFICATION: The central steam distribution system operates at 100 psi.

Site

1. During the site visit it was mentioned that the powerhouse that adjoins the tunnel system could potentially be used for contractor storage and staging area during the duration of the project pending approval from the Captain. Please clarify if this area could be used by the contractor?

CLARIFICATION: It is likely that contractors will be allowed to utilize the powerhouse building, adjoining the tunnel system, for storage and staging.