Q A_12_9.pdf

# General Technical Question Answer Date

1 x Sheet C.5 refers to Roadway

Aggregate, method 2 (Crushed

Aggregate) as part of the entire (12”, 24”, 36”) subbase fill. Is there to be a delineation where Roadway

Aggregate, method 2 is a 6‐8” top layer and the rest is NFS material of some kind?

All subexcavation locations are backfilled with rdwy_agg, method 2 to top of subgrade.

The last lift will vary in thickness due to the supering of the roadway.

12/4/2015

2 x

In the Standard Underdrain System , the backfill is referred to as Granular

Backfill . The specification (703.03a) has no identification other than

AASHTO M 80 Size Number 3, 4, 5, 57, 67, or 7. Assuming the material has to be screened and washed, what is the gradation of the granular backfill?

Refer to the ASSHTO M 80 specification 12/4/2015

3 x

The bid schedule pay item Temp

Traffic Control, Warning Light Type A has no reference in any of the plan sheets. Where are these signs to be placed and what are these signs?

Refer to the MUTCD Manual and use as required 12/4/2015

4 x

The contract specifications say to have two lanes open by 8:00am unless otherwise approved by the CO and the plan sheets show possible lane closures using a temporary traffic signals. How often will the traffic signals be able to be used and when?

A Traffic Control Plan must be provided to the Project Engineer before commencing work.

12/4/2015

5 x

Can you please confirm the plan for the underdrain system. From what we see, there are no drain outlets from STA 208+00 to

214+50, only perforated drain pipe running along both LT and RT sides of the project? Are there outlets on either end of the drain system?

See G.2 12/8/2015

Check General or Technical

AK NPS DENA 10(41)

Repave Denali Park Road MP 3.4 to 14.9