140P2022R0049_-_Q_A_Set_3_Response_0003.pdf

140P2022R0049 6/14/2022

Q&A

Discipline Sheet Detail Spec Description Response

1 Contracting Solicitation Factor 3 Page 49 of 57 Please advise if you are looking for up to 5 relevant projects from prime and/or key trades specifically? We suggest the RFP allow bidders to submit up to 10 projects for Factor 3 to include both prime contractor projects and key trades/subcontractor projects. Otherwise please clarify if up to 5 projects representing a combination of prime and key trades projects is preferred.

Up to 5 relevant projects representing the experience of the Prime and key subcontractors is to be submitted in the technical proposal.

2 Contracting Solicitation 01 27 00 The Contract Price Schedule listing of Bid Options does not align with the listing provided in Specification 01 27 00. Please revise Contract Price Schedule and/or Section 01 27 00 as required to include the correct options

Price schedule shall be updated to align with specifications.

(CONTACTING)

3 Contracting Solicitation Amendment 2 indicates offers providing less than 90 calendar days will not be considered.

The Original RFP and Revision 1 SF1442 indicated a 60 Calendar Day validity period. Due to current supply chain issues and resulting volatility in material costs, please consider maintaining the original 60 day validity period to limit contingency, reducing overall costs to the NPS

(Contracting)

4 General Drawing List The plan index sheet lists "LP1 Logistics Plan" under the Hardscape Project and noted as (Not Included, See BOST 254798). There is no LP1 drawing listed under the BOST 254798 Monument Restoration. Please provide if missing

See G 0.2 for the site staging and access plan.

5 Contracting Solicitation Factor 2 Page 49 of 57 The Solicitation states to assume a Notice to Proceed date of 01 August 2022. Amendment 0004 included a Pre-Proposal Presentation that mentions a NTP date of 01 September 2022 on slide 4 and later a NTP date of 01 November on slide 14. Please confirm bidders should build a schedule for Factor 2 that assumes a NTP date of 01 August 2022.

Submitted schedule should have a start date of 10/11/22.

6 Plumbing Demo Specifications call for removal, inventory and reinstall drinking fountain. No drinking fountain was observed during the site visit, please provide location and condition of drinking fountain

7 Electrical E2.1 Drawing E2.1 refers to the "Project Manual" on numerous notes throughout the drawing.

Please confirm that the "Project Manual" is referencing the project specifications. Project Manual is the Project Specification

8 Contracting Solicitation Factor 3 Page 49 of 57 Please confirm that the Technical Approach and Schedule narratives count towards the 25-page limit only and that Factor 3 "Project Experience" forms and resumes do not count towards the page limit.

Factor 3 "Project Experience" has not page limitation. Only Factor 1 "Technical Approach" has a 25 page limitation.

Contracting S6.00 A 316333

Section 1.4.E of the micropile specification states that "Permanent casing is required to a depth equal to depth of bedrock surface or a minimum of 10-feet below final grade, whichever is greater". Drawing S6.00 indicates that permanent casing is to be drilled to a depth of 2' into glacial till layer, and that a maximum of 12' of casing per pile is to be assumed for estimating purposes. Please clarify which requirements govern.

Please use Detail A on Sheet S6.00 for the governing requirements of the micropile and casing. The pile casing for each micropile shall be embedded 2 feet into glacial till.

The average depth of the glacial till is approximately 10 feet, but varies across the site.

Contracting 316333

Section 1.7.A of the micropile specification states that the "maximum variation of any pile from its planned or indicated location at the cut-off elevation shall not exceed one (1) inch unless approved by Contracting Officer." Industry standard for micropile tolerance in plan view is 3 inches. As currently prescribed, the drilled micropiles will require that additional controls, efforts, and costs be expended to ensure that the strict tolerances can be met. In light of this, would the industry-standard 3 inch tolerance in plan view be acceptable on this project?

A 3" tolerance from the centerline of the pile to the indicated plan location is acceptable. The tolerances for plumbness and pile cutoff elevation shall remain as specified in the specs.

Contracting S6.00 A 316333

Section 2.1.A.3 of the micropile specification requires a 28-day micropile grout strength of 6,000 psi, while Drawing S6.00 notes a micropile grout strength of 5,000 psi. Please clarify which minimum grout strength is correct.

Please use 5,000 psi for the minimum grout strength per the detail on Sheet S6.00

Contracting S6.00 A 316333

Section 2.1.B.1 of the micropile specification calls for piles to be reinforced with a Gr. 150 reinforcing bar, while Drawing S6.00 shows a Gr. 75 reinforcing bar. Please clarify which grade of reinforcing steel is correct.

Please use 75 KSI threaded reinforcing bars per the detail on Sheet S6.00

Contracting S6.00 A 316333

Section 3.2.A.1.c of the micropile specification calls for a minimum drill hole diameter of "11- 7/8 inches as determined by the outside of the casing", while Drawing S6.00 shows a 9-5/8 inch diameter casing. Please clarify which minimum pile diameter is required on this project.

Please use 9-5/8" outside diameter casings per the detail on Sheet S6.00

Discipline Sheet Detail Spec Description Response

Contracting 316333

Section 3.3.A of the micropile specification requires two load tests "per pile design", one verification test and one proof test. Please confirm that there is only one pile design for the project and therefore only two load tests required for the project.

Based on the borings and Geotechinal Report which show the presence of strong glacial till with minimal variation in the depth we felt that a larger testing program was not required. However, given the large quantity of piles we would be OK increasing the number of proof tests on production piles from 1 to 6 with the option to reduce that to 3 following the successful performance of the piles tested. The numbers of verification tests on sacrifical piles shall remain as 1.

Contracting 316333

Section 3.2.A.10 of the micropile specification indicates "do not progress a new hole, pressure-grout, or post-grout, within a pile radius of 5 pile diameters or 5 feet, whichever is greater, of a micropile until the grout for that micropile has set for 24 hours or longer." Micropile grout sets very quickly, generally reaching its initial set within a matter of hours. The "24 hour rule" has widely been interpreted to mean "the next day", but as written can be highly problematic since it precludes any work from taking place until the end of the following shift - thus becoming a "40 hour rule". Wisely, many specifications reference a 12 or 16 hour timeframe in this situation, still providing ample set time for fresh grout, while also allowing any adjacent work to take place at the start of the following shift. Can the language in this section be modified to reflect a 12 or 16 hour wait time instead of the 24 hour period currently specified?

The 24 hour wait time can be changed to a minimum 16 hour wait time so that adjacent work can being the next day.

Contracting 316333

Section 3.3.A of the micropile specification references two types of tension tests (verification and proof), then goes on to reference ASTM D1143 which is a compression testing standard.

Please confirm that the correct reference in this subsection should be to ASTM D-3689, "Standard Test Methods for Deep Foundations Under Static Axial Tensile Load ".

The reference to ASTM D-1143 in Section 3.3.A of the micropile specifications should be replaced with a reference to ASTM D-3689.

17 Architectural 01 27 00 Bid Option E for the restoration of the Monument's Exterior Railing and Decorative Gate Restoration is not detailed on the drawings, please provide additional detail on the extent of restoration.

Are there more details

18 A2.1 1 Drawing 1/A2.1 calls for repointing of stone within the crawl space. Please provide dimensioned details or SF assumed allowance for repointing stone foundation wall surfaces within crawl space so all bidders are pricing the same scope of work

(6.3 x 16)*4 Are we doing all of it

19 A2.1 1 Drawing 1/A2.1 calls for repointing of stone within the crawl space. Please confirm whether this will be considered as a confined space.

Is it?

20 Level 3 to top of spire must be removed and reconstructed. And though the drawings show some reconstruction details, extent of removals is unclear. Please provide sections showing existing construction depths, materials, construction method, and any and all other details required to quantify what needs to be removed and how we will establish mean and methods.

21 A5.1 Existing marble cornice at level 3 is detailed on A5.1. Please verify that this drawing shows actual configuration of existing unit within the wall. Please detail how this unit will be anchored upon reset- or confirm that current cantilever is sufficient to support stone. Note that this cornice is approximately 4’ 9” wide and is balanced on top of a 2’ 0” wide wall.

Need anchoring detail?

22 A5.3 Existing marble cantilevered slab at level 4, as shown on A5.3, shows an even more precarious Need anchoring detail?

23 S2.1 Drawings S2.1, S4.1, and S4.1 (There are two different S4.1 drawings) call for 10” CMU walls.

Yet architectural sections show 12” CMU as being required to fill backup void. Please clarify- it appears the CMU shown on 4/S2.1 is in conflict with the wall construction and shown on A5.3.

A5.5, A5.6 and A5.7.

Need AE to answer

24 S5.2 Detail on S5.2 shows three I-beam lintels with masonry packed in the middle voids. How does the engineer see this being accomplished?

Need answer?

25 General "R" Series Drawings Please confirm that the quantities denoted on the Masonry Restoration Quantity Schedules in the drawings shall serve as the basis of pricing and any additional repairs which are found to be required during project execution will be handled as a changed condition subject to contract modification

Please confirm / explain expectations

Discipline Sheet Detail Spec Description Response

26 General Due to the highly specialized scope of work included with this project, please provide an extension to the proposal due date of at least 3 weeks. This will allow the bidders and their subcontractors to thoroughly plan for the work in a site with challenging access constraints, ultimately resulting in more competitive proposals to the NPS

27 General Due to the timing of the second site visit (6/14), please provide a 1-week extension to the Q&A submission deadline to 6/21

28 General Please confirm that permits are not required for work that occurs within the Park Traffic Permits and street closure permits will be required.

29 Civil Various Please provide additional information on whether the irrigation system is valved in such a way that the non-work areas (i.e. areas where turf is retained and protected) can be isolated and not impacted by the project.

30 Civil Please clarify whether the contractor is responsible for winterizing the irrigation system Park Service will winterize the system

31 Civil Please confirm any permits required for work outside the Park will be obtained by the NPS All permits will be obtained by Contractor

32 Solicitation indicates that options may be awarded up to 120 calendar days after contract award. Due to current supply chain issues and resulting volatility in material costs, please consider maintaining the original 60 day validity period to limit contingency, reducing overall costs to the NPS

The administrative requirments for the award of this contract requires the offeror to guarantee the price for 120 days or the offer will not be considered compliant with the contract requirements.

33 Electrical E1 sheet 92 of 92 Please confirm Site Lighting Plan E1 sheet 92 of 92 is to be included as part of this projects pricing and should be priced under CLIN 0001, as portions of the work is excluded in the Monument Restoration Project drawings.

YES

34 Electrical E2.2 sheet 65 of 68 Please confirm what size conduit shall be run for "infrastructure for future use" / "low voltage data lines" from the ground floor up to a junction box on level 3 North wall. what size conduit to the 3rd Floor

Questions