Q A_4-11.pdf

WA Lewis 707(1)

Cispus Road Improvements

# General Technical Question Answer Date

1 x I am requesting that you consider a change to an emulsified asphalt binder as per Standard Specification #702.02 (specifically CRS-2P). This asphalt has been proven to work best in the Northwest, and the cost would be considerably less.

no change will be made 3/24/16

2 x

Is it OK for vehicular traffic to operate on gravel surfacing between storm installation and final paving yes 3/30/16

3 x

Is it the intended to replace the storm culvert at

Sta: 5.15 with a smaller culvert than that is existing. Storm schedule and plans contradict each other.

18"

3/30/16

4 x

There are several culverts that show the incorrect flow direction, is this the intent upon new construction.

No. Intent is to match existing flow and invert elevations.

3/30/16

5 x

Which crossings are assumed to have the division channel. MP 2.76 3/30/16

6 x Are road closures allowed? See Amendment A001 3/31/16

7 x Are excavated materials acceptable for embankment fill? See Section 204 in FP‐14 3/31/16

8 x

Is the Asphalt Concrete Pavement Patch required at the pipe culvert replacement locations incidental to the Pipe Culvert bid items or will it be included in the Asphalt

Concrete Pavement Patch bid items?

It is incidental to the Pipe Culvert bid items

3/31/16

9 x

Are hubs/blue tops going to be required for the placement of the 6” of crushed aggregate at all of the asphalt concrete pavement patch locations? no 3/31/16

10 x

Sheet G.2 shows Detail A, is that actually supposed to be the Full Depth Patch Type 3

Detail A is for when the patch is on the edge of pavement. See Subsection 418.05

Asphalt Pavement Patch, Type 3.

3/31/16

11 x

Would it be allowable implement a detour route utilizing Forest Service Road #2305 during the removal/installation of the 36‐Inch Pipe

Culvert required at M.P. 2.76

See Amendment A001

3/31/16

12 x

What is the detail for the patching of the culvert replacement See SCR’s Subsection 602.03 – backfill culvert with 6 inches of crushed aggregate and 4 inches of asphalt concrete. 4/6/16

Check General or Technical

13 x

The SY for the patches of the culverts called out on sheet F.1 look to be a bit inadequate, in particular Station 2.76 and 5.15. The Schedule calls out 32 SY at Station 2.76 and 19 SY at

Station 5.15. Both have inverts of 20’‐22’ in depths See Amendment A003 4/6/16

14 x

Are patches required to be perpendicular to the existing roadway or when is required to complete the work. See Amendment A003 4/6/16 x

The Tabulation of Drainage quantity sheet

(sheet F‐1) on note # 1 at the bottom says that the minimum wall thickness is the larger of 0.168” (8 gage) or what is shown on std. 602‐1. 4/11/16

8 gage is not available from the Steel Mills, so it is impossible to supply it as specified.

On page F‐2, even the largest size pipe shown on this project, (36” diameter), It shows the Minimum height of cover to be

12” and the maximum cover on top of the pipe to be 71’. Will it be acceptable to use bid this pipe in 16 gage?

See Amendment A004