Q&A_02-06-19.pdf

AK PRA DENA 10(35)

Repave Denali Park Road MP 0.0 to 3.4

# General Technical Question Answer Date

1 X

Is the 5 mile pit an available material source for this project?

SWPPP ‐ 3.1 General Description of project and scope of work names the 5 mile pit as the source of materials.

No. A forthcoming amendment will clarify the requirements.

2/1/19

2 X

Brian Collins is listed as the geotechnical engineer on this Denali Park Road Repave deep patch project in Alaska. I am hoping to get some clarification as to the separation/stabilization geotextile. The drawing states Class 1 Type A nonwoven geotextile. AASHTO specs dictate a “Class 1A Enhancement Geotextile” be ,50% elongation which would mean a woven geotextile. Can you please clarify if this is just Class 1 nonwoven, or is this Class 1A Enhancement and a woven?

See FP‐14 Subsection 714.01(a) requirements for Separation and Stabilization Geotextile Class 1, Nonwoven, Type A.

2/5/19

3 X Can you kindly send me the link to this subsection 714.01(a)?

See the first link on Page A‐1 of the Notice to Bidders.

2/5/19

4 X What was the percentage of oil used in the asphalt for the previous phase?

Not available. Design the Job Mix Formula according to Subsection 401.03.

2/6/19

5 X For Pay Item # 40101‐5600 Asphalt Concrete Pavement Gyratory mix, will you confirm that PG 82‐40 Binder is correct.

This will be addressed under a forthcoming amendment.

2/6/19

6 X What are the asphalt oil content requirements for this project?

Contractor to determine. See Subsection

401.03. 2/6/19

Check General or Technical

7 X

Regarding Pay Item # 30604‐0600 Full Depth Reclamation with Asphalt, the specification is vague whether we are required to grind the roadway once for mixing then come back and re‐ grind and foam or if the roadway can be ground and foamed in a single pass. Please clarify.

In accordance with Subsection 306.09, pulverizing and mixing may be performed in a single pass, or more than one pass.

2/6/19

8 X

The specification mentions the mile 5 pit can be used for stockpiling excavation. Can the excavation be left in the mile 5 pit or will it have to be hauled off before project completion?

This will be addressed under a forthcoming amendment.

2/6/19

9 X

Please elaborate on the asphalt pay factor tables. Is the 40101‐5600 Asphalt Concrete Pavement Gyratory mix a type 1 mix? If so, does that mean we must improve the Pavement Roughness factor by 25‐42% in order to receive full compensation?

No. Pavement Roughness is Type II‐A as shown on Plan Sheets C.1‐3. See Subsection 401.16 and Table 401‐4 for percent improvements and pay factors; and also see Subsection 401.16 Payment.

2/6/19