Interested_Vendor_Questions_and_Answers_17FEB16.pdf

Interested Vendor Questions and Answers Demolition and Production of Airfield Quality PCC Pavement Model

17 February 2016

1. Question: Is a bid bond required for this project

1. Answer: No bid bond will be required for this project. This project is the placement of a concrete pad on which we will test saws and other equipment.

1a. Question: Is there a bid bond required for this RFQ? Will payment and performance bonds be required upon award?

1a. Answer: No bid bond will be required for this project. There will not be any type of bonds required upon award. This project is the placement of a concrete pad on which we will test saws and other equipment.

2. Question: Does each of the 20' x 20' section have to be poured individually, or can a strip (several) be poured at one time and then saw cut the 3 inch cuts to separate the sections?

2. Answer: Each 20' by 20' strip must be formed and poured separately. (See CLARIFICATION listed in 2a below) 2a. Question: In the Performance Work Statement it states a self-propelled screed would have to be used. Since the Contractor is not allowed to pour this in strips ( 20' wide and 80-160 ' in length), but instead must pour one 20' x 20' pad at a time, can a manual cable pull screed be utilized?

2a. Answer: Per the PWS, the contractor IS allowed to pour in strips - NOT one slab at a time.

We just don't want to pour any wider than 20 ft at a time. The concrete shall be poured 20 ft wide by either 80 ft or 160 ft long.

3. Question: Can the existing limestone be used to level out the subgrade for the new limestone base course?

3. Answer: Yes, the existing limestone (if not contaminated too badly) can be used to level out the subgrade for the new limestone base course.

4. Question: When is the deadline for questions?

4. Answer: Offerors interested in this procurement may submit questions through 17 February by 5:00 p.m. Central Time.

5. Question: What are the earthfill material requirements,( P.I. range, class, LL)?

5. Answer: We don't have any requirements for the subgrade material except that it consist of a silt with a density between 85 and 110 pcf and moisture between 12 and 18% as measured by our Troxler Nuclear Density Gauge.

6. Question: What are the density requirements for #610 and earthfill? (for example - 95 standard with +/- 2% of optimum moisture)

6. Answer: We expect at least 90% of optimum density and moisture for the silt and limestone material. We don't plan to traffic this test section. We will simply be using the concrete for equipment evaluations. We just want to make sure the foundation layers are fairly uniform using the density and moisture requirements stated in the PWS.

7. Question: As per the performance work statement, silt subgrade material will be needed. Is this material provided by ERDC?

7. Answer: Silt subgrade will be provided by the contractor.

8. Question: Is proof rolling required after demolition and before limestone is placed?

8. Answer: Proof rolling is not required.

9. Question: What density requirements are needed for limestone and earthfill?

9. Answer: Density requirements for limestone: 128 to 138 pcf; silt: 85 to 110 pcf

10. Question: What is the gradation for the limestone?

10. Answer: A typical 610 limestone is needed.

11. Question: Is there a place on-site to obtain the material required for raising the subgrade in the area where there is currently 24 inches of pavement.

11. Answer: There is no location on-site to obtain the material required for raising the subgrade in the area of the existing 24-inch pavement.

12. Question: What type of reinforcement material, if any, is in the existing pavement model?

12. Answer: No reinforcement material is in the existing pavement model.

13. Question: Is there any reason that a wrecking ball could not be used to remove the existing pavement model?

13. Answer: There is no reason a wrecking ball could not be used to break up the existing pavement model.

14. Question: Will the Contractor be responsible for burying or bulldozing the debris to a low area at the dump site, or will they just dump it on the flat ground?

14. Answer: The Contractor will be responsible for only dumping the debris on the flat ground.

15. Question: Is there a mix design, strength, etc. for this concrete?

15. Answer: Per the PWS, the concrete shall have a compressive strength of 5,000 psi. There is no definitive mix design, but it must be approved by the APB.

16. Question: We are registered with SAM but it has been a little while since we quoted anything, how will the bid be submitted? Is this electronic or will we deliver it to you? If delivered, is there specific language for the outside of the envelope?

16. Answer: The quote shall be submitted via e-mail to jody.criss@usace.army.mil . See the information posted at the following URL: https://www.fbo.gov/spg/USA/COE/329/W912HZ-16- Q-9539/listing.html . Offerors must have an active registration in the System for Award Management in order to be eligible for award.

17. Question: Will the Airfields and Pavement Branch be performing the actual concrete sampling and testing, or will the Contractor need to perform this?

17 Answer: The Airfield and Pavements Branch will perform the actual concrete sampling and testing (see the PWS).

18. Question: What is the joint spacing for the wet sawn contraction joints?

18. Answer: 20 ft by 20 ft.

19. Question: Since each 20’ x 20’ concrete panel is poured separately, can you provide a detail for the joint between each adjacent concrete panel?

19. Answer: The slabs are 20 ft by 20 ft. They are not poured individually. Contraction joints are cut into the test section to form the 20 ft by 20 ft slabs (see the PWS). Also, per the PWS, all saw-cut contraction joints are to be at least 1/8 in. wide by at least 3 in. deep. No joint sealant is required. Per the PWS, the contractor IS allowed to pour in strips - NOT one slab at a time. We just don't want to pour any wider than 20 ft at a time. The concrete shall be poured 20 ft wide by either 80 ft or 160 ft long.

20. Question: Who is the Contracting Officer for this project?

20. Answer: The Contracting Officer will be determined at the time of award. The name, telephone number, and e-mail address for the Contract Specialist for this procurement is listed at the following URL: https://www.fbo.gov/spg/USA/COE/329/W912HZ-16-Q-9539/listing.html .

21. Question: Some of the FAR clauses referenced in the solicitation indicate that a minimum of information shall be provided on the bid submission form. The form provided does not include space for all of the minimum information. Is this a formality that will be waived?

21. Answer: Any additional information may be provided on a separate document in a format chosen by the Offeror.

22. Question: Will a project-specific USACOE QA/QC plan be required?

22. Answer: A project-specific plan will not be required.

23. Question: Since all of the 20' x 20' areas are formed and poured individually, are there any contraction joints required? And if so, where?

23. Answer: The slabs are 20 ft by 20 ft. They aren't poured individually. Contraction joints are cut into the test section to form the 20 ft by 20 ft slabs (see the PWS). Per the PWS, the contractor IS allowed to pour in strips - NOT one slab at a time. We just don't want to pour any wider than 20 ft at a time. The concrete shall be poured 20 ft wide by either 80 ft or 160 ft long.

24. Question: The photos that are of the existing concrete to be removed show areas around the project that appear to have some sort of surface. What type of material is it and will the Contractor be required to replace it to match existing?

24. Answer: The existing test section is surrounded by crushed limestone. The contractor will not be required to replace it to match existing, but the test section will need some type of support surrounding the PCC.

25. Question: Will temporary electricity and water be available on-site? If so, will there be a charge?

25. Answer: Electricity will be available on site, and we can supply the water through a hydroseeder source. There will be no charge for electricity or water.

26. Question: Will temporary sanitary facilities be available for the Contractor’s use near the site, or will port-a-cans be required?

26. Answer: Port-a-cans will be required for temporary sanitary facilities.

27. Question: The Performance Work Statement states that the use of a self-powered, vibratory truss screed required. As an example of the type of screed to be used, would an Allen truss screed that has a manual winch qualify as this type of screed, even though it has a manual winch?

27. Answer: The truss screed to be used can be considered to be a self-powered, vibratory truss screed if it has an engine that produces the vibration of the screed, yet the means of forward propulsion is performed by a manual winch. In this case, "self-powered" refers to the mechanism of vibrating the screed, so an Allen truss screed with a manual winch would be acceptable as long as it is self-powered by an engine to vibrate the screed. The forward movement of the entire piece of equipment over the concrete can be done by a manual winch as long as the vibration of the screed is self-powered with an engine. We do not want two or three people manually pushing a bar across the wet concrete.

Additional information: This model does have some very hard, rapid-setting concrete, and when the government has removed these types of concrete pads in the past, we have used a fairly large excavator with a hammer attachment in order to break it up for removal.

Photographs of the existing pavement model to be removed are available by request. Also, a photograph of the dirt road leading to the landfill/dump site and a photograph of where the debris will be dumped are available by request. The dump site is estimated to be at least two miles of road distance from the existing pavement model site, and a map showing the route from the current pavement model to the dump site is available by request.

Items listed in red above pertain to the clarification regarding the 20 foot by 20 foot sections of the new pavement model.