N3319123R4014 Replace Roof Kenya Amendment 0002.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

N3319123R4014 D-B Replace Roof and Install Elevator, USAMRD-A, Kericho, Kenya

See Page 2 for description of Amendment.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 8

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 13-Jun-2023

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X N3319123R4014

X 9B. DATED (SEE ITEM 11)

12-May-2023

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

13-Jun-2023

CODE

NAVFAC EURAFCENT FEAD NAPLES

AEROPORTO DI CAPODICHINO

BASE AMERICANA (ROICC)

80144

NAPOLI 81044

N33191 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

N3319123R4014

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE (SF 30)

The following have been added by full text:

1. Subject Solicittion is amended to respond to Pre-Proposal Inquiries.

Pre-Proposal Inquiry 026 Attachment 1, Section 1.14, page 19: SoW mentions that final design package for Architectural drawings shall include :

• Floor plans

• Roof plans

• Room finish schedule

• Door and window schedules

• Exterior elevations

• Building sections

• Wall sections

• Enlarged plans

• Reflected ceiling plans

• Interior elevations

• Stair plan and sections

• Door and window details

• Miscellaneous details

According to the "1. Project Description"; the main task is described as replacing the existing roof covering layers, roof structure, false ceiling tiles, and structure by providing a new complete roof system for the Clinical Research Center (CRC) Laboratory facilities in Kericho, Kenya. Taking into consideration the task, it is not clear why there is a request for some of the drawings and schedules such as; room finish schedule, door and window schedule, wall sections, enlarged plans, interior elevations, stair plan and sections (according to the given plans and sections in the attachment file, building is single-storey and there is no stair in the plan drawings as well), door and window details and miscellaneous details. Please clarify what drawings and schedules are required.

Response 026

See changes to Pages 42-44 of the Performance Technical Statement provided with this amendment.

Pre-Proposal Inquiry 027

Attachment 1, Appendix A, page 124: The 3-s gust basic wind speed at 10m above ground for locations is considered as 24m/s. Please confirm.

Response 027

This is a design-build project. The Contractor is responsible for hiring a designer of record which will be responsible for meeting the requirements in the RFP in keeping with information herein and applicable Kenyan laws, regulations and standard design practices.

Pre-Proposal Inquiry 028

Attachment 1, Annex A4, page 193: The note "All connection to be 5 mm filled weld" seen in the general notes. If this is suitable, please confirm.

Response 028

This is a design-build project. The Contractor is responsible for hiring a designer of record which will be responsible for meeting the requirements in the RFP in keeping with information herein and applicable Kenyan laws, regulations and standard design practices.

Pre-Proposal Inquiry 029

Attachment 1, Annex A4, page 193: Rather than BS 4360 Grade 43 structural steel, is it acceptable to use EN 10025-2 grade S275?

Response 029

This is a design-build project. The Contractor is responsible for hiring a designer of record which will be responsible for meeting the requirements in the RFP in keeping with information herein and applicable Kenyan laws, regulations and standard design practices.

Pre-Proposal Inquiry 030

Is the usage of cold-formed steel allowed as a purlin?

Response 030

This is a design-build project. The Contractor is responsible for hiring a designer of record which will be responsible for meeting the requirements in the RFP in keeping with information herein and applicable Kenyan laws, regulations and standard design practices.

Pre-Proposal Inquiry 031

Is it suitable to use for bolts and anchorage ISO 898-1 Grade 8.8 or 10.9?

Response 031

This is a design-build project. The Contractor is responsible for hiring a designer of record which will be responsible for meeting the requirements in the RFP in keeping with information herein and applicable Kenyan laws, regulations and standard design practices.

Pre-Proposal Inquiry 032

Attachment 1, Section 4.2.4., page 64: Is field welding acceptable?

Response 032

This is a design-build project. The Contractor is responsible for hiring a designer of record which will be responsible for meeting the requirements in the RFP in keeping with information herein and applicable Kenyan laws, regulations and standard design practices.

Pre-Proposal Inquiry 033

Attachment 1, Section 4.2.4., page 64: The note "All connections shall be designed using a minimum safety factor of

2.0 with no increase in allowable working stress" seen in section 4.2.4. Please confirm if this is required.

Response 033

This is a design-build project. The Contractor is responsible for hiring a designer of record which will be responsible for meeting the requirements in the RFP in keeping with information herein and applicable Kenyan laws, regulations and standard design practices.

Pre-Proposal Inquiry 034

Attachment 1, Section 1.14., page 20: In section 1.14, there are requirements on structural drawing showing that "Lateral-force resisting system & Floor Plans". Please confirm that it is necessary to include existing building structural lateral force resisting system drawings and calculations. If so, please provide the existing building survey drawing.

Response 034

This is a design-build project. The Contractor is responsible for hiring a designer of record which will be responsible for meeting the requirements in the RFP in keeping with information herein and applicable Kenyan laws, regulations and standard design practices.

Pre-Proposal Inquiry 035

The MCER (Risk Targeted Maximum Considered Earthquake) spectral response acceleration parameters for both short and 1s periods (1% probability of collapse within a 50-year period) for 6 project locations is considered as 0.32g and 0.15g respectively. Please confirm.

Response 035

This is a design-build project. The Contractor is responsible for hiring a designer of record which will be responsible for meeting the requirements in the RFP in keeping with information herein and applicable Kenyan laws, regulations and standard design practices.

2. Subject solicitation is amended to change requirements on pages 42 through 44 of the Performance Technical statement. Replace those pages with the following:

USAMRD-A FACILITIES KERICHO, KENYA

The roof replacement for the CRC laboratory building shall consist of the following:

• Remove and dispose of approximately 900 sq. meter of roof tile.

• Remove and dispose of approximately 900 sq. meter of roof sheeting. Salvaged iron sheets to be stored for reuse by USAMRD-A, location to be coordinated with COR or designated onsite representative.

• Dismantle, remove and dispose of existing roof structure comprising of trusses, rafters, purlins, battens, wall plates, fascia, eaves, etc.

• Remove and dispose of existing gutters and downspouts.

• Remove and dispose of approximately 900 sq. meter of interior ceiling including PVC eaves boarding.

• Remove and dispose of existing interior ceiling mounted light fixtures.

• Dismantle the abandoned electrical fittings and terminate the abandoned electrical cable in the ceiling and roof space. All existing electrical lines still being used shall be reinstalled after completion of the new roof and attic space in new electrical conduit with proper support and hangers.

• Dismantle plumbing pipes and water storage tanks located in the roof space. Abandoned piping and tanks not in use shall be disposed of. All mechanical and plumbing systems still in operation shall be reinstalled with new piping, supports, and equipment.

• Any existing fire protection systems, such as alarms, sprinklers, and equipment shall be removed and reinstalled after the completion of the new roof/attic. Before reinstallation, fire protection system shall be evaluated and inspected to ensure it provides adequate coverage for the building and repaired as necessary to meet the Kenya building codes. Fire protection system shall be certified by a licensed fire protection professional.

• Disconnect and remove lightning protection system. Design and install new lightning protection as part of the new roof construction, with roof lightning rods and at least five connection points with earth grounding grounds.

• Construct a completely new roof system to include new metal trusses, rafters, purlins, battens, wall plates, fascia boards, eave construction, soffit construction, roof sheeting, Decra style roofing tiles or equivalent, flashing, plumbing vent penetrations and roof vents.

• New roof system shall be designed and constructed to match the character and color and pitch of The xisting roof. The pitch shall change to accommodate catwalk and attic headroom. Provide specialty tiles for all conditions including but not limited to eaves (starter courses), rakes, ridges, closures, and hips as needed. Mortar is an acceptable closure material as part of manufacturer’s standard detail.

• Provide and install zinc strips per manufacturer’s recommendations throughout the new roof to combat moss and algae growth. Replace the existing roof vents and roof jacks. Provide vents as necessary to provide adequate ventilation for the attic space. All penetrations, such as roof vents, jacks, and windows shall have animal screens to keep out birds and insects.

• Tile installation will follow the current edition of the Kenyan building codes and the tile Manufactures’ standard details; however, it must include one layer of underlayment, lapped to provide a full two layers at all locations. The deck shall be painted with one undercoat and two finishing coats of clear polyurethane on the general surfaces.

• The deck must be replaced and installed to provide an acceptable substrate for the underlayment�and nailing of tiles and in conformance with current Code and Roofing Manufacturer’s requirements. Allowable deck includes solid wood (minimum 38 mm) and plywood (minimum 16 mm each for up to a maximum 600 mm supports spacing. Oriented strand board (OSB) roof decks are not allowed. Other deck configuration may be considered when coordinated with truss spacing and design.

• The Contractor shall certify the overall integrity and conditions of existing building roof support load structural to include, but not limited to, foundation, wall, spacing piers, columns, and any other structural members.

• New and existing trusses to remain must be adequately attached to the masonry walls in conformance with the Kenyan and international buildings codes, design standards, and life safety regulations. Bracing will be provided to stabilize trusses as needed. Contractor shall be responsible for determining if temporary lateral bracing of existing walls will be needed during the roof removal and construction. Contractor shall provide the temporary lateral bracing as needed.

• New roof system shall be designed to provide structural support for the appropriate roof live and dead loads.

• The Contractor shall replace all storm water gutters and downspouts with new aluminum seamless metal and connect to existing storm drainage system. The Contractor shall install replacement gutters of all one color. The new gutter section(s) will match the color of the existing gutter.

• Install eaves boarding in HG PVC with metal brandering channels centered at 600 mm intervals each way.

• The gauge of the gutters to be installed will be 2 mm thick, downspouts 1 mm thick, Hanger and spike spacing

60 cm. The Contractor shall make all connections within the gutter system using appropriate fittings (i.e., preformed corners, elbows, end caps, and connectors).

• The Contractor shall ensure that all gutters and downspouts are secured properly and are aligned at the correct slope to carry away water. Downspouts shall end at least 1 meter (3 ft) away from building exterior and foundation. If gutter hangers are used, the straps will be installed under the roofing tiles. All fasteners for roofing and structural repair must be hot dipped galvanized or stainless steel as follows:

o Hot dipped galvanized fasteners complying with ASTM A153 and connectors complying with

ASTM A653,

Class G185 are acceptable.

o Type 304 or Type 316 stainless steel fasteners and connectors are recommended for maximum corrosion resistance.

• Install approximately 950 sq. meters of new 12 mm thick, soft gypsum board interior

Ceiling throughout the building, complete with railing/brandering channels, studs and matching cornices. Prepare and apply one undercoat and two finish coats of plastic emulsion paint on surfaces of the soft gypsum board ceiling.

• Paint interior and exterior passages as necessary, as well as around walls, doors, and windows, in order to match existing interior. Provide exterior tryolene wall render painting as necessary to match existing.

• Furnish, install, and terminate all wiring and necessary materials to reconnect all electric service panels, subpanels, breakers, switches, light fixtures, receptacles, etc. that were disconnected during the roof demolition.

• Install new LED light fixtures throughout the attic space to adequately illuminate the room. Light fixtures shall be operated by a single switch that is located directly above the attic access hatch point. The light fixtures shall be evenly spaced throughout the attic to provide sufficient light for inspection purposes.

• Contractor shall construct an access walkway (minimum 600 mm wide) in the attic space, above the bottom cord of trusses at a point with maximum head room. The path of the walkway shall make a complete loop (with a 1 m high safety railing and balustrades) of the attic space to allow for visual inspection of the entire attic.

• Reinstall HVAC lines for electric mini-split A/C units (including ceiling cassette ones) that are located in the roof space.

• Contractor is responsible for ensuring continuous life safety protection and utilities for occupied spaces through temporary connections during the construction phasing.

A preliminary roof inspection and structural assessment for this building was conducted in September 2022. In addition, a similar roof replacement for a WRAIR building in Kondele was completed several years ago. The Kericho roof inspection report and the Kondele roof replacement plans are included for the

Contractor’s information as part of this Performance Technical Specifications package:

o Annex A1 – CRC Site Plan o Annex A2 – Floor Plan and Elevations for Existing CRC Lab Building o Annex A3 – CRC Roof Inspection and Structural Assessment Report o Annex A4 – Sample of Final Design Plans for Similar Roof Replacement Project in Kondele o Annex A5 – Quality Control Plan Guidelines

These attachments are for reference purposes only. The Contractor shall utilize this information to create their own full design drawings and details for construction. The Contractor is responsible to visit the site in order to ascertain existing conditions and accurately estimate quantities prior to bidding.

2.3 EXTERNAL LIFT FOR MHK BUILDING

The CLIN 0002 – Install external elevator/lift system to replace the existing lift adjacent to the Microbiology Hub Kericho (MHK) building.

The Contractor shall provide a complete and external elevator/lift system to replace the existing lift (block pulley) attached to the MHK building.

The installation of the elevator/lift system roof replacement for the CRC MHK laboratory building shall consist of the following:

• Completely dismantle, remove and dispose of existing lift system. Salvage existing block pulley system and provide to USAMRD-A for for client use.

• Prepare ground such that lift system is not subject to any adverse drainage from surrounding area.

• Furnish and install an elevator/lift system, including required structural foundation as appropriate. The system must be attached to the MHK building; however, it must be structurally independent of the building.

• Provide all utility connections necessary to have a completely working elevator/lift system.

• Area of elevator/lift must have a minimum floor area of approximately 1.5 m x 1.5 m 2.2 m x

1.5 m (clear, internal space) with an access door height of approximately 2.4 m, and a capacity to lift a minimum of 500 kg.

• Elevator must be able to reach the parking lot level, ground floor and first floor.

• Elevator must be configured not to block any existing access to the MHK building.

• Elevator/lift system must be suitable for external (outside) use. Door to be controlled access.

Contractor shall provide all necessary concept plans, design plans, calculations and other interim deliverables associated with the installation of the lift. The system must be selected, designed and

(End of Summary of Changes)