B09_Amendment_02_Questions_and_Answers_10-27-23_0002.pdf

1. On fixture OC1E - it is requested to provide a battery for this fixture however the Lithonia WPX0 Led does not have a battery option.

RESPONSE: Provide the WPX1 1550 lumens/ 11W/ 8.1”H, 8.1W, 3.2” D that comes with a battery pack. Please see the attached product data sheet.

2. Fixtures OB1 and OS1 are not DLC listed. Please advise if OK.

RESPONSE: Provide one of the attached alternate bollard fixture manufactures for the OB1 fixture type. Provide the specified OS1 step light or proposal an alternative equivalent light fixture.

3. Below is the link for the lights, to be reviewed and approved prior to bid for the project. As per electrical.

RESPONSE: The proposal LP4 and LW2 light fixtures have been reviewed and meet the design intent.

Substitutions are to be submitted after award, not during solicitation.

4. The plans show 1 ½” of gypsum concrete on the main level. The specifications is calling for sound mat. Can you please clarify if the sound mat is required? If so, should the total assembly remain at 1

½” or is 1 ½” of gypsum concrete still required over the sound mat (total underlayment 1 13/16”)?

RESPONSE: Yes, the sound mat is in the specification to meet the IIC for space below. The total assembly is to remain at 1 ½”. See attached sheet A0.5.

5. The specifications call for Levelrock 4500 with a compressive strength of 4,000 psi. We have a lot of unfavorable experiences with Levelrock 4500 due to its expansion rate during curing. We can meet the 4,000 psi compressive strength using Levelrock 3500 at a richer mix. Is this acceptable? We have attached a product submittal.

RESPONSE: We can get the same compressive strength with 3500. The Manufacturer’s stated range for this product is 3500 – 4500 psi without any special additives. It will not impact the weight of the material nor will it affect the structure beyond what was previously specified.

6. Kinetic Wall & Ceiling Panels @ Mechanical Yard

a. A0.5 calls out for the installation of Kinetic Wall & Ceiling Panels at the mechanical yard. (Ceiling Assembly F4, Wall Assemblies E4 & E15 and similar). Please be advised that there are no project specifications for this material which provide the type of system, Replace Dilapidated Visitor Center Facility Little Bighorn Battlefield National Monument

(LIBI 241430)

Solicitation 140P2023R0150 Amendment 2 Questions and Answers

October 27, 2023 sound ratings etc. Can you please provide the type of system(s) to be provided, thickness of materials and finishes and intended noise reduction requirements?

RESPONSE: This is in the specifications. Section 134813 – Exterior Sound Absorbing Wall Panels. In addition, see the attached product sheet Kinetics, Perforated Metal Acoustical Panels, Model KNP.

7. Shear Wall Hold Downs:

a. Plan Sheets S1.1, S1.3 and S1.5 call out locations for shearwalls to be installed. The legend indicates that the designation should have 4 letters/numbers assigned to each type of shear wall. On these plan sheets, several of the locations call outs are incomplete. I.e.

Instead of 1A2B, the callout may only show 1__B. Please clarify the shear wall hold down requirements on these plan pages.

RESPONSE: Shear wall callouts indicated with ‘-‘ denotes that element is not needed at that location.

8. Landscape Retaining Wall Requirements

a. Details 4/L3.2 and 5/L3.2 on plan sheet L1.1 indicate that the footings should be as per the structural drawings. The structural drawings end at Grid line 7 and do not provide the size of the concrete footings to be provided that are shown on the landscape drawings. Please clarify structural footing requirements at the outdoor educational plaza

(and TOF elevation), as well as the structural footing requirements for the walls as shown on

L1.1

RESPONSE: Structural requirements for site walls shown on landscape/civil drawings are shown in detail A1/S6.2.

9. Outdoor Educational Plaza – Concrete Requirements

a. Details 02/A5.20 and 03/A5.20 – the details for the concrete slab(s) at the roof deck area call out for 2 different slab types (detail 02/A5.20 calls out for a post-tensioned slab, while detail 03/A5.20 just calls out for a 4” slab. The F4 floor and ceiling assemblies on A0.5 direct contractor to review structural plan pages for concrete slab type. S1.2 calls out this slab to be a 4” normal topping slab. Please verify that the post tensioned slab requirement at this location is not required.

RESPONSE: There are no post tensioned slabs. See attached sheet A5.20.

10. Alternate #1 – Seat Wall Footing System:

a. Detail 3/L3.2 references structural drawings for footing system for the seat wall assembly. There is no structural information provided for this system. Please clarify.

RESPONSE: See the marked-up detail below.

11. Specification Section 057300 – Ornamental Railings

a. The specified basis of design manufacturer’s for the railings (Item 2.1A) – BOK

Modern/Enfold no longer provide handrail assemblies. As a bidder do we need to do a proposed substitution request for an alternate mfr, or can this be done post bid?

RESPONSE: Handrail can be by other manufacturer. It needs to be included in the bid and meet the performance requirements indicated in the specifications and code. BOK provides guardrail and handrail brackets only.

12. Specification Section 062013 – Exterior Finish Carpentry

a. Item 3.5 calls out for flashings to be stainless steel as shown on the drawings or as recommended by the mfr; Detail 04/A5.13 calls out for a pre-finished metal flashing. Which is required?

RESPONSE: Flashing is to be stainless steel as indicated in the specifications.

13. Detail 08/A5.12 – ASF 01 Head Detail. This detail shows metal siding; the exterior elevations at this location show stone siding (Wall Type S2). Assume this detail should be 08/A5.11?

RESPONSE: Detail 08/A5.12 is only referenced in wall section detail 02/A3.3 and Window Type 01 on sheet A6.1. The detail and references are correct. There is a metal panel wall assembly recessed in the stone wall. See elevation 02/A2.1, material tag MP1 and building section 01/A3.0.

14. Exterior “Accent” Wall @ Grid 7

a. Structural drawings show the footings/wall/wind frames for the “Stone Accent Wall” that is shown on the exterior elevations @ Grid 7, however nothing is shown on the architectural drawings beyond Grid Line A.

1. We are questioning if this should be similar to a Type S3 Wall assembly (non insulated stone walls as opposed to a S1 system which is insulated?

RESPONSE: See architectural sheet A0.7 for stone veneer wall assemblies. This plan shows stone assembly beyond Grid Line A. S1 wall assembly has continues insulation and no cavity insulation. Continues insulation is required by the energy code.

b. Plan Page A0.7 only shows the S3 wall system as extending 4’-2” beyond Grid 7 as opposed to what is shown on the Exterior Elevations/Structural Plan Pages.

RESPONSE: Plan Page A0.7, Exterior Elevation sheets A2.0 and A2.1, and Structural Footing

& Foundation sheet S1.0 match. The wall that is extending 4’-2” on sheet A0.7 is Wall

Assembly S1.

c. Plan Page A0.7 shows a Wall Type E14/MP5 (2’-8” wide) attached to the Accent Wall

Assembly. The exterior elevations on plan sheet A2.0 show 2 locations for the MP5 assembly.

RESPONSE: Exterior Elevations on sheets A2.0 and A2.1 show 3 locations of the MP5. Please refer to the elevation finish tags with the “leader.” See attached sheet A2.0 and A2.1.

d. MP5 Systems: No details on the imaging required. Also, the structural drawings do not show the 4x4 Tube steel column systems at this wall type.

RESPONSE: Imaging is to be provided by the exhibit designer. A revised structural plan showing 4x4 tube steels will be issued in the next round of comments.

e. Detail 02/A2.1 shows the south side of the Exterior Accent Wall at the MP-5 locations as MP-

1 (siding). Is this correct or should this be MP-5 as well?

RESPONSE: This wall assembly finish is MP5. However, MP1 is supposed to be MP6 to indicate the steel plate shroud at these openings (jamb and head). See corrected Elevations A2.0 and A2.1.

f. How should the bottom(ceiling) of this walk through space be finished? Exterior T&G or some sort of metal cladding?

RESPONSE: This opening has steel plate shroud. See corrected Elevations A2.0 and A2.1.

15. Flagpole Requirements/Locations: There is a project specification for a 25’ flagpole (Spec Section

107529), but the plan documents do not show where the flagpole is to be located. Plan sheet L1.0 shows the future location for 18 future tribal flags, but that is all. Please have design team clarify the location installation of this flagpole.

RESPONSE: All tribal flags are to be coordinated with the Contracting Officer, until that has been coordinated please disregard reference to the 25’ flag pole spec as there are no other flagpoles required.

16. Cornerguard locations: There is a project specification for 90 degree and end wall cornerguards

(Spec Section 102600), but nothing is referenced in the specifications, and or plan pages as to locations for these materials. Should all “exposed” drywall corner areas in the building be assumed to receive a cornerguard? Also, please confirm the length of the units to be provided is 48”.

RESPONSE: Corner guards are located on the attached Floor Plans. See sheet A1.1 and A1.7.

17. Ceiling Access Panel Requirements: The RCP plans do not show the provision of any access panels that could potentially be required to be supplied/installed.

RESPONSE: To be issued in the next round of comments.

18. C2 & C9 Metal Panel Ceiling(s): The main level RCP plan page (A1.9) shows a metal panel ceiling to be provided at the 2 vestibule entrances to the structure. These ceiling metal panels are not called out on the Finish Schedule on plan sheet A6.3. (Plan Sheet A6.3 directs you to the RCP plan pages for information on the ceiling finishes). Is the intent to use the BOK Modern metal panels at these locations that are specified under Spec Section 07-4213.16?). In talking to BOK Modern yesterday they had indicated that these panels are not really intended to be used in a ceiling application (they do not have any installation details). If these 12” wide panels are to be used, please indicate layout patterns.

RESPONSE: The ceiling finish legend is located on sheet A1.9 and ceiling assemblies on sheet A0.6 that correspond to the ceiling finish legend on sheet A1.9. BOK metal panel is the basis of design.

Equivalent can be provided if it meets the design intent and specification requirements. The metal panel ceiling seams are located on sheet A1.9. See clarification on sheet A1.9.

19. BOK Modern Panel Requirements: The specifications for the Metal Wall Panel (Section 07425.16), Item 2.4A calls out for a 14 gauge thick material to be provided. Project plan details (04/A5.11) all state that a 12 gauge thick material is to be provided. Which is correct? The only material that

BOK Modern can provide that can meet this requirement is their Corten material which can either be Anodized or Powder coated. (specs call out product to be powder coated)

RESPONSE: Panels are to be aluminum powder coated. The thickness is 0.080 which is equivalent to

12 gauge.

20. Exterior Finish Carpentry – Spec Section 062013: Accoya Wood Product(s).

a. Ceiling System: RCP Plan page A1.9 – Main Level System C7 – calls out for a wood T&G material to be installed, and it is to be stained. We assume that this product is to be an

Accoya T&G material. Please verify.

RESPONSE: Correct. It’s to be Accoya T&G material.

b. Exterior Wood Ceiling Ventilation: Spec Section 062013, Item 2.6 – Misc. Materials calls out for continuous stainless steel soffit vent material to be provided. The RCP plan on A1.9 does not show this soffit vent material. Please confirm that this material does not need to be installed.

RESPONSE: To be issued in the next round of comments.

attachments

A0.5 Assemblies – Roof & Floor

A1.1 Lower Level – Annotated Floor Plan

A1.7 Main Level – Annotated Floor Plan

A1.9 Main Level – Reflected Ceiling Plan

A2.0 Elevations

A2.1 Elevations

A5.13 Details – Section

A5.20 Details – Patio Railing

Product Sheet OB1 – Cooper ABB Arbor Bollard

Product Sheet OB1 – Gardco PureForm LED bollard PBL

Product Sheet OC1E – WPX LED Wall Packs

Product Sheet Kinetics Perforated Metal Acoustical Panels, Model KNP

Perforated Metal Acoustical Panels Model KNP

Description KNP perforated metal panels are highly durable acoustical sound absorbers. Ideal solution to air-borne noise problems in demanding environments.

KNP metal acoustic panels are functional and aesthetically pleasing perforated panels which are used to control reverberant noise problems. Although primarily intended as an absorber, KNP perforated metal panels will act as a barrier when a solid back is added. KNP sound absorbing panels are useful as additions to existing metal or concrete barriers to sound.

Application KNP perforated metal acoustic panels deliver ample sound absorption over a wide frequency range.

KNP acoustical properties, appearance, and rugged durability make it the choice for controlling reverber-ant noise problem in factories, waste water treatment facilities, pump rooms, mechanical equipment yards, gymnasiums, natatoriums, multi-purpose rooms, and recreational facilities. KNP sound absorbing panels are suitable for outdoor use and are ideal for instal-lation over existing barrier walls and are excellent in resisting damage from impacts, abrasion, or mois-ture.

KNP perforated metal panels can be attached to walls, ceilings, or other surfaces and can be located in a manner to achieve an aesthetically pleasing pattern. These sound absorbing panels are available with optional rear backing to increase transmission loss and be used as a barrier. Available faced with perforated material on both sides and used as hang-

KINETICS®

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