RFI_1-13_FA440718R0003.pdf

RFI No.

Date

Received Question / Comment SME Response Response Date

Publish Action

Action Date

R0001 7-Mar-18

Sheet 49, Note 2 (Elect General notes) states: All open excavations shall be covered with metal plates or backfilled at the end of the shift. Does this note apply in paved areas only? Does it apply to grassed areas while waiting for the duct bank concrete to cure? Snow fence around open trenches would normally be provided at open trenches.

Snow fencing wiill suffice if area(s) have been designated contractor clear zones.

28-Jun-18 A01 3-Jul-18

R0002 7-Mar-18 Is the counterpoise to be installed in concrete? Please explain Elect. Eq. Note 1, Sheet 49 (3rd paragraph).

Per UFC 3-535-01, paragraph 12-1.6.1:

"If this is not practical, install counterpoise 4-6 inches above the duct or direct buried cable." It is deemed impractical to trench the counterpoise in a separate trench requiring additional asphalt pavement displacement and patching. Counterpoise shall be routed a minimum of 2 feet around light bases and other relevant equipment.

28-Jun-18 A01 3-Jul-18

R0003 7-Mar-18

Re: Sheet 107, Detail 4. If the counterpoise must be installed 24” from the base can in lieu of within the excavated / core drilled area for the light a huge amount of additional asphalt will have to be removed and replaced. Perhaps as much as $500,000 to $1 Million. Compare to Detail 1 on Sheet 107 (EL521) where counterpoise is over ducts. Can the counterpoise be placed over the PVC duct in asphalt patched areas?

See R0002 Response 28-Jun-18 A01 3-Jul-18

R0004 7-Mar-18

Sheet 99, Detail 2 shows the in-pavement R/W, T/W edge light detail. It seems to us that pouring the concrete around the light base to 4” below the asphalt level creates a tremendous amount of additional

(unnecessary) work. Pouring the concrete around the base up to finished asphalt grade would eliminate substantial extra costs to include asphalt coring, L868 Light base extensions, high strength non-shrink grout, and make keeping the snow plow ring at the proper height much easier.

Pouring the concrete to asphalt grade level is acceptable.

28-Jun-18 A01 3-Jul-18

R0005 7-Mar-18 Are the light bars on Sheet 69 at Stations

180 + 09.03 new or existing?

New 28-Jun-18 A01 3-Jul-18

R0006 7-Mar-18 On Sheet 80 Note K refers to Sheet CD301 for trenching in PCC. We believe Note K should refer to a different sheet.

Refer to sheet 41, Drawing # CP501.

Place counterpoise conductor in same trench. See R0002 Response.

28-Jun-18 A01 3-Jul-18

R0007 7-Mar-18 On Sheet 82 should horizontal directional drilling be shown for the 2-2”-for FO cable? (top right)

There are (2) existing 4" depth asphalt, 10' wide access roads in this area.

Contractor has the option to trench and patch.

28-Jun-18 A01 3-Jul-18

R0008 7-Mar-18

Sheet 6 (GP101) indicates the new duct bank coming from the vault crossing an existing short runway between the West

Ramp and T/W A. That existing runway is not shown on Sheets EC112 or EC113. Are we to bore under that runway via Horizontal Directional Drilling?

Contractor has the option to trench and patch across rarely used Foxtrot

Parking ramp.Match existing. Assume

8" HMA.

28-Jun-18 A01 3-Jul-18

Request for Information (RFI) Subject Matter Expert (SME)

R0009 7-Mar-18

With regard to questions 2 and 3 above we request better details on exactly how the existing R/W asphalt shoulder (11” HMA plus 6.5” HMA) are to be cut and patched.

Particularly with regard to counterpoise and 2” conduit placement.

For removal refer to CD501 Detail 1.

Contractor shall remove existing HMA , PCC and material required to maintain

3 1/2" conduit separation from excavation envelope and 5 1/2" spacing between conduits.Minimum depth to top of duct-bank is 2'.

28-Jun-18 A01 3-Jul-18

R0010 7-Mar-18 Sheet 107, Note 2 (last sentence) under

Detail 3, is confusing. Please clarify meaning.

Counterpoise shall be placed in same trench pertaing to structural pavements.

28-Jun-18 A01 3-Jul-18

R0011 7-Mar-18

Sheet 108, Please confirm whether or not the 2W2” R/W and 1W2” T/W duct banks in the existing 11” + 6.5” HMA shoulders are to have #4 rebar reinforcement for all edge light conduits.

Per note 1 sheet # 108, drawing EL522, reinforcement is only required under full strength pavements.

Reinforcement is not required in the shoulder areas.

28-Jun-18 A01 3-Jul-18

R0012 7-Mar-18

Sheet 38 (CD501), Does the Step 1 and Step 2 process apply to the 1W2” T/W and 2W2” R/W shoulder cutting and patching for the new edge lights?

Contractor shall remove existing HMA , PCC and material required to maintain

3 1/2" conduit separation from excavation envelope and 5 1/2" spacing between conduits.Minimum depth to top of duct-bank is 2'.

28-Jun-18 A01 3-Jul-18

R0013 7-Mar-18

From Drawing EC113 we cannot tell how far it is from MH01 to the AF Lighting Vault. Please show AF Lighting Vault location on EC113.

Distance from west ramp edge to AFLV is approximately 120'

28-Jun-18 A01 3-Jul-18

R0014 R0015