Q-A _revised_9-23-15.pdf

DTFH6815B00019 Revised 9/23/15

CO FLAP 1099(1)

LAKE PUEBLO ROAD & TRAIL IMPROVEMENTS

9/14/15

QUESTION #1

Regarding Line item A1520, Pay item number 50101-2500., Minor Concrete Pavement Plain, 5 inch Depth: Specification section 501 makes reference to …”when required” ….regarding pavement reinforcement, and plan sheets K1,R1 & R2 do not indicate any reinforcement in the concrete pavement, however, Standard plan Sheets 501-1 and 501-2 indicate the possibility of reinforcement and dowel bars in this pavement. Is reinforcement and doweling required in this 5 inch pavement, and if so what are the reinforcement details?

Response: This pay item does not require reinforcement or dowels. Standard plan sheets 501-1 and 501- 2 are not included in the plans and do not apply.

QUESTION #2

Project spec calls for an H-10 VL, Drawings call for an H-5 VL. Which is correct?

Response: See amendment A001.

QUESTION #3

Each bridge has a grade. Are the interior verticals to be installed perpendicular to the bottom chord or plumb to the horizon?

Response: Install verticals perpendicular to the bottom chord.

9/14/15

QUESTION #4

The existing Trail Bridge over the Arkansas River (Schedule A) has an approximately 8 inch diameter steel pipe hanging from below the bottom of the wood decking. What does the pipe contain, is it active and does it need to be re-located onto the new trail bridge? If it does need to be re-located can it be out of service for the period of time the existing bridge is removed and new bridge installed?

Response: It is an abandoned water line. What is remaining is the carrier pipe. The 2 or 4 inch water line has been removed. It can be removed with the bridge.

9/15/15

QUESTION #5

Is the contractor responsible for snow removal during the winter construction timeframe?

Response: CPW will continue normal maintenance but the contractor is required to remove any snow that prevents their operations.

QUESTION #6

Is the government providing any power or other utilities for the contractor lab trailer or the government lab trailer if used? If not, is power available at the proposed staging areas?

Response: Power is available in the staging areas. It will be the contractor’s responsibility to connect to the utilities and determine cost with Xcel or CPW.

QUESTION #7

Solicitation Page B-17. Please clarify what “Each Trade” means on the goals for minority and female participation. Does each subcontractor individually have to meet these goals?

Response: The goals are project wide for each Trade. A “Trade” is defined as a Classification in the Davis- Bacon Wage Determination; see Section D of the Invitation for Bid.

QUESTION #8

Is the roadway aggregate on this project designated to be a Class D or designated a Class E, or is it left up to the CO or the contractor?

Response: Furnish aggregate according to subsection 703.06.

QUESTION #9

Sheet V30 of the plans shows vehicle loop detectors. Where is this located on the project and what bid item covers the cost of construction of this item?

Response: The loop detectors are shown and called out on the V sheets: V10, V17, V16 (callout is missing but detector is shown.) We are missing the pay items in the estimate. We will add the pay item and revise the sheets. See Amendment 002.

QUESTION #10

Several sheets on the plans (example: C1 and C4) have a tag “Begin Guardrail Sta.xxxxx, See Standard 617-11. Please provide this standard with the plans.

Response: The notes in the C-sheets should reference Special 617-A. Install per 617-A – Sheets will be revised. See Amendment A002.

QUESTION #11

Plan sheet C2 states Install Safety Rail, See Special 615-A. Please provide this Special with the plans.

Response: The notes in the C-sheets should reference Special 646-A. Install per 646-A – sheets will be revised. See Amendment A002.

QUESTION #12

Is the “Pedestrian Rail” required on Sheet C4 the same design as the “Safety Rail” required on Sheet C1? Which Specials are used to fabricate these two different types of rails?

Response: No pedestrian rail is required on C1. – the Plan callout on C2 does say ‘safety rail’. The other plan callout and the profile callouts say ‘pedestrian railing’. All should say ‘safety rail’ and all should refer to 646-A. The callouts on C23 and D8 should also refer to 646-A. The sheets will be revised. See Amendment A002.

QUESTION #13

The Reservoir Trail is shown to be New Raised Concrete from Sta. 854+14 to Sta. 862+50 on plan sheet A11. It is from Sta. 854+14 to Sta. 862+93 on Sheet C8.

Response: 862+50 is correct, will revise callout on C8. See Amendment A002.

QUESTION #14

Since the bottom mat and the top mat of asphalt are different mix designs, could you please specify the thickness of each layer?

Response: Place lifts of equal thickness. Bottom mat and Top Mat thickness = ½ of total thickness required.

QUESTION #15

While the dirt quantities are shown on the plans, the phasing of the work seldom works out to have the dirt available to excavate it at the same time embankment is needed elsewhere. Is there a location on the project that dirt may be stockpiled until it is needed?

Response: Dirt may be stockpiled in staging areas, within construction limits, or the waste area.

QUESTION #16

Plan sheet C13 requires an aggregate base and asphalt trail starting at Sta. 842+61. Sheet A11 shows it to be a concrete trail.

Response: will revise to call out concrete trail. See Amendment A002.

9/17/15

QUESTION #17

In schedule A and options Y & Z there is no bid item for “TEMPORARY TRAFFIC CONTROL, TRAFFIC CONTROL SUPERVISOR”, however, there is in option X (item X1570). Should schedule A and options Y & Z have this bid item as well? In addition, this item is usually measured and paid for by the day and not Lump sum as in schedule X. Can the unit of measure for this item be changed to days?

Response: The traffic and safety supervisor items in Options X is intended to pay for coordination or flagging required by UPRR for work in their ROW. Traffic and Safety supervisor duties are considered subsidiary to other items for Schedule A and Option Y and Z.

QUESTION #18

Options Y, & Z have only “TEMPORARY TRAFFIC CONTROL” as lump sum items( items Y1260 & Z1260), and no other traffic control items. In lieu of the Lump Sum items, can unit priced traffic control items be provided similar to what is in schedule A?

Response: According to Section 156 – Options Y and Z can be closed during construction as long as they are not both closed at the same time. Therefore few items are need for this work and it will remain Lump Sum.

9/19/15

QUESTION #19

Since these two products are substantially different in price, can there be a separate bid item for each of the two different binders, per bid schedule?

Response: Bid as shown in plans and bid schedule.

9/21/15

QUESTION #20

Should there be pay items for Uncl. Exc and embankment on Schedules X & Y?

Response: No embankment or excavation is necessary for these 3(R) segments.

QUESTION #21

How does the removal of the concrete barrier and handrail curb on the Railroad Bridge get paid for?

Response: On the railroad bridge the concrete barrier is not being removed, just the metal rail (see note

(2) on S-1). The handrail curb on the outside is included in removal of handrail (pedestrian rail) pay item, see note (3) on S-2.

QUESTION #22

There are no cross-sections for a large section of the project, will they be provided?

Response: Cross Sections are only provided in areas of 4(R) reconstruction/realignments. Areas without cross sections are 3(R) areas requiring pavement rehabilitation/reconstruction.

QUESTION #23

There are two different size chain link fences on the Railroad Bridge but only one pay item, will there be an added pay item?

Response: Only one pay item. Both heights of chain link fence are covered in the pay item.

QUESTION #24

What is the scope of work and detail for the Ditch reconditioning items?

Response: See FP 303.03

QUESTION #25

Drawing 204-A (Special) (Sheet F2) shows geotextile as incidental to “Select Granular Backfill”. Refer to Section 714.03 for Class 2, woven, Type A. There is no mention of Class 2, woven, Type A in Section

714.03. Section 714.03 refers to bi-axial. Please clarify what material to use.

Response: See Amendment A003

QUESTION #26

If there is a 14 day requirement to cover up the aggregate road after the old asphalt is removed and then subgrade and base be brought to the new design elevation, is it possible to just initially place a bottom mat without the top mat for the cover or are you requiring the entire 5” asphalt mat (both lifts) to be placed in the 14 days?

Response: The 14 day requirement applies to placement of the first lift of asphalt. However the contractor is responsible for the condition of any and all lifts of asphalt until the project acceptance. If the asphalt is placed and the mat is damaged it is the responsibility of the contractor to correct it.

QUESTION #27

If the old asphalt trail is pulverized and then brought to the new design grade, may the pulverized asphalt, if there is an excess in some areas, be moved to other areas to be used as embankment or does this material need to be hauled off site because it has old asphalt in it?

Response: It is not anticipated that there will be excess pulverized material that would need to be wasted. The material could be used as shouldering material. Any material used for embankment operations would need to comply with FP Section 704.06 Unclassified Borrow.

QUESTION #28

Can CSS 1H be used for Prime?

Response: Supply a Prime that conforms to FP subsection 702.02.

9/22/15

QUESTION #29

The cross sections for the Reservoir Trail on Plan Sheets X72 to X76 do not have stations shown on the individual cross sections. Would it be possible to add the station numbers to these sections?

Response: See Amendment A003

Each bridge has a grade. Are the interior verticals to be installed perpendicular to the bottom chord or plumb to the horizon?