SOW Design Build Repair Aircraft Hangar Structural and Fire Suppression Fac 211.pdf

STATEMENT OF WORK

Design-Build Repair Aircraft Hangar Structural and Fire Suppression, Fac 211

Project No.

QYZH170018

11 December 2024

SCOPE OF WORK

A. General: This Statement of Work (SOW) sets forth the requirements for design-build project to repair Hangar 211 structural and fire protection systems. The Contractor shall utilize, as necessary, the original design documentation (attachments 2 through 5) for the project as most of the design remains unchanged, except as noted below.

The Contractor shall use the original design documentation (attachments 2 through 5) to redesign the structural repairs and correct structural deficiencies in Hangar 211 in situ (in place) and shall not replace the bottom chords of each bowstring truss. The Contractor may elect to use, after a licensed structural engineer validates it is ok, any other structural repair in the original design (attachments 2 through 5), other than the Contractor shall not remove and replace the bottom chord of the bowstring trusses.

Based on lessons learned and what has been observed at similar hangars during their structural repair, the Contractor using a licensed structural engineer, shall design and perform repairs on each bowstring truss in situ (in place) – i.e., the bottom chord is not to be removed as indicated on the original design documents (attachments 2 through 5).

All repairs must be done in situ. The Contractor may elect to consult with and use a specialty firm whose expertise is in design and repairs for timber that are done in situ.

Below are typical in situ repairs that the government would like the Contractor to incorporate into your in situ structural repair design and then install the recommended structural repairs:

Note: the material mentioned below that is either shown as registered “®” or has a trademark “TM” is not a requirement for the Contractor to use. It is only mentioned as examples of in situ structural repair material. The Contractor may design and install an equivalent structural repair material or may choose to use structural repair material with a “®” or “TM”.

Compression chord elements that have delamination in the glulam members, the Contractor shall design and install Retroshear® Panel-like structural repair or an equivalent structural repair to restore the connection between the laminations and ensure the individual laminations act compositely as a beam (i.e., plane sections remain plane).

Retroshear® Panels are a composite of high-strength tension fibers in a cross matrix epoxied to designed plywood that transfer shear loads in multiple directions.

Elements with minor to moderate decay in the timber element where shear loads are prevalent, the Contractor shall design and install Retroshear® Panel-like structural repair or equivalent structural repair at the location of repair and beyond a designed distance to restore proper transfer of shear loads.

Deficient web and chord elements that are loaded in compression, the Contractor shall design and install Retrocom™ Reinforcement-like structural repair or equivalent structural repair along the full length or region of elevated compression loads to restore the compression capacity. A “Retrocom™ Reinforcement is a designed timber element that is fixed to the parent element with epoxy to form a complete composite element with increased compressive capacity.

The contractor shall install uniaxial high-strength reinforced polymer (RP) to the underside of the entire length of bottom chord plies for all trusses. One example of a composite RP and lamination is called “Retroten® Reinforcement”. In this example, the RP of the “Retroten® Reinforcement” shall be coated with epoxy and then lag screwed in place to close the glue line and facilitate curing the epoxy. The Contractor shall design and install a Retroten® Reinforcement-like structural repair or an equivalent structural repair along the bottom chord of each truss that spans the entire length of each truss.

For deficient web and tension chord elements that are loaded in tension, the Contractor shall design and install a Retroten® Reinforcement-like structural repair or an equivalent structural repair along the length of the bottom chord to completely restore and/or enhance the tension capacity. This “Retroten® Reinforcement” methodology shall also be adopted where naturally occurring strength-reducing defects and decay exist near the face of the element where the “Retroten® Reinforcement” is positioned but may be used in conjunction with “Retroshear® Panels” on other faces.

For deficient or damaged connection details, the Contractor shall design and install additional connection/cover elements to extend the length of the connection (with or without additional shear plates, as needed according to their design). Depending on the connection, the added cover element may need further upgrade with Retroshear® Panel-like structural repair or equivalent structural repair to make the existing connection and new connection elements respond compositely.

In deficient tension chord splices or similar tension connections, the Contractor shall design and install Retroten® Reinforcement-like structural repairs or equivalent structural repairs centered on the splice connection and beyond in either direction a designed length to adequately transfer the tension load to the adjacent tension elements.

For deficient or damaged connection (i.e., intersections of chord and web or chord and multiple web elements), the Contractor shall design and install Retroshear® Panel-like structural repair or equivalent structural repair across the connection, capturing all intersecting elements to transfer loads as required between the cord and web elements.

Below is a typical depiction of what the government is requiring for in situ structural repair design and installation:

The red line indicates where the typical Retroten® Reinforcement-like structural repair or an equivalent structural repair will span the entire length of each trusses’ bottom chord.

The yellow indicates where the typical Retroshear® Panel-like structural repair or equivalent structural repair should occur for all trusses. The Retroshear® Panel-like structural repair or equivalent structural repair shall be applied to each web element/member.

The green indicates typical connection repairs at the truss heels as described above with connection/cover elements to extend the length of the connection and Retroshear® Panel-like structural repairs or equivalent repairs for the heel connections of each truss.

Below are some typical details the show that show the various Retroten® Reinforcement-like, Retroshear® Panel-like, and heel connection repairs the government requires:

Typical Retroten® Reinforcement-like (red line) structural repair or an equivalent structural repair below:

Typical Retroshear® Panel-like (yellow lines) structural repair or equivalent structural repairs below:

Typical connection repairs at the truss heels (green lines) as described above with connection/cover elements to extend the length of the connection and Retroshear® Panel-like structural repairs or equivalent repairs for the heel connections of each truss shown below:

The Contractor shall ensure the design complies with the Sundown Policy Foam Fire Suppression Systems (Change 2) 29 December 2022 for a Tier 2 hangar (attachment 1) and the latest revisions to Unified Facilities Criteria (UFC) 4-211-01, Aircraft Maintenance Hangars; UFC 3-600- 01, Fire Protection Engineering for Facilities; UFC 3-101-01, Architecture; UFC 1-200-01 DoD Building Code; UFC 3-110-03, Roofing;

and UFC 3-201-01, Civil Engineering. The design for the new roofs, its structure, roof repairs, and all structural repairs shall be in accordance with the latest version of UFC 1- 200-01 DoD Building Code and UFC 3-110-03, Roofing. Insulation shall meet the requirements of ASHRAE 90.1.

Roof shall have 20-year no dollar limit warranty that covers 115 mph winds and 1” diameter hail that follows the applicable roof system UFGS.

Only the affected work area (i.e., the foam suppression system and automatic sprinkler system removal, fire alarm system, Mass Notification System (MNS), automatic sprinkler system removal and replacement, roof and all structural repairs) must comply to applicable UFCs, codes, and standards. The entire facility does not need to be upgraded or renovated to meet the latest UFCs, life safety codes, and other applicable codes. The change to UFCs, codes, and standards in effect at the 35% design milestone are the changes with which the design and construction efforts must comply and applies throughout the life of the design and construction project.

The Contractor shall account for all required dead loads and live loads associated with the structure, new in situ structural repairs, existing IR heater system that gets reinstalled, automatic sprinkler system, fire alarm system, electrical system, and MNS in their design.

The Contractor shall install the automatic sprinkler system as indicated on the design documents (attachments 2 through 5). The fire protection design and drawings (attachments 2 through 5) are intended to show a diagrammatic system to incorporate major elements for conditional approval prior to the final design and submission provided by the Contractor and are therefore schematic in nature. The fire protection design and drawings (attachments 2 through 5) indicate design intent and general routing of fire sprinkler piping. The Contractor is responsible for the final layout, design, calculations, and shop drawing. The Contractor shall provide a hydraulic design for the sprinkler system, shop drawings, calculations, submittals, and material in accordance with UFC 4-211-01, Change 3, dated April 20, 2021, and Sundown Policy Foam Fire Suppression Systems (Change 2), dated 29 December 2022 for a tier 2 facility. Hydraulically design the sprinkler system to provide 0.2 gpm/sq. ft. (8.0 Liters per minute per square meter (L/min/sq. m) over the hydraulically most demanding 5,000

sq. ft. (464.5 sq. m) in the hangar bay. The Contractor shall provide drainage trenches at each aircraft movement door to comply with Sundown Policy Foam Fire Suppression Systems (Change 2), dated 29 December 2022 for a tier 2 facility with unfueled aircraft for environmental protection to prevent fluids from escaping the hangar.

The Contractor shall follow the design documents (attachments 2 through 5) to remove the existing high expansion foam suppression system, along with its piping, components, and equipment.

The Contractor shall install the fire alarm system and MNS for the high bay and wing area (the two-story administration area) as indicated on the design documents (attachments 2 through 5). The Contractor shall provide a fire alarm system and MNS system, shop drawings, submittals, and material in accordance with UFC 4-211-01, Change 3, dated April 20, 2021, UFC 4-021-01, Change 1, dated January 2010, and the Sundown Policy Foam Fire Suppression Systems (Change 2), dated 29 December 2022.

The Contractor shall remove the triple infrared (IR) flame detection and optical detection, and controls associated with them shown in the original design.

The Contractor shall install the electrical system and mechanical system for the high bay and wing area as indicated on the design documents (attachments 2 through 5).

The Government does not require textual display signs regarding the MNS as approved in attachment 6. The Contractor shall remove the textual display signs as part of their shop drawings, calculations, and product data. Contractor shall include the base standard pre-recorded messages (attachment 7) in the design documents for the MNS.

The Contractor shall keep the recommend repairs to the six (6) exterior light platforms as shown in the original design (attachments 2 through 5).

The Contractor shall design and install the cable anchor fall protection system mounted on the hangar like what is depicted in the original design (attachments 2 through 5).

The Contractor shall move the downspouts with concrete splash blocks approximately 10 feet away from doors because it creates dangerous icy conditions and personnel may slip, fall, and hurt themselves. Revise the appropriate architectural drawings.

The Contractor shall provide one design package, which includes the Hangar 211 roof structure and roof repairs, in situ structural repairs, automatic sprinkler system sprinkler system, fire alarm system, and MNS.

The period of performance (PoP) is twenty-four (24) months, with 6 months for design and 18 months for repairs and construction.

B. During the execution of this work, provide adequate professional supervision and quality control to ensure the accuracy, quality, timeliness, and completeness of the work.

C. The work is located at the Mountain Home Air Force Base (MHAFB), Mountain Home, Idaho, at Hangar 211 along the flight line, as indicated in the design drawings.

D. The Contractor shall provide one (1) bid price to execute all work identified in this SOW, which shall be comprised of three (3) separate bid prices tracked under three (3) separate Contract Line-Item Numbers (CLINs) as described below:

1. As a separate bid line item and as a separate CLIN called “Repairs”, the Contractor shall include roof repairs; repairs to the bowstring trusses, structural members, and in situ structural repairs; repairs to concrete buttressed wall; automatic sprinkler system; fire alarm system; and MNS. Repair scope also includes to reconfigure fire riser to feed the high bay, first floor, and second floor separately in accordance with the original design documents (attachments 2 through 5).

2. As a separate bid line item and as a separate CLIN called “Construction”, the Contractor shall install new electrical wiring, new panels “N” and “K”, and components from the existing transformers to the hangar that will power the new fire alarm system, MNS, and other new systems which require power. Validate the design drawings, specifications, and design analysis (attachments 2 through 5) are still appropriate for electrical design, and if not, update the electrical, fire alarm system, and MNS design portions.

3. As a separate bid line item and as a separate CLIN called Temporary Facilities, the

Contractor shall provide two (2) modular office trailers complete with electrical, interior lighting, exterior lighting at the exit(s), outlets, four (4) LAN, four (4) Communications ports, insulation, heating, air conditioning, and lockable via doors for each trailer. The modular office trailers shall be set up and installed near Hangar 1332. The Government will show you the location. The trailers shall be rented for twenty (20) months. The trailers must be in place and operational one (1) month prior to construction starting and must be removed within one (1) after construction is complete. Below is an example of the modular office trailers the Government would like:

OR

a. The Contractor shall provide one (1) trailer that is approximately 60 feet x 24 feet x 8 feet tall, to include two (2) offices for management and superintendent, and a center open floor plan for ten (10) people and one (1) instructor. [NOTE: these are approximate dimensions and reflect the approximate size of the trailer. The Contractor is responsible to submit and provide trailers that are close to the size needed]. This trailer shall contain four (4) LAN ports: one each for the offices, and two (2) for the center space, which shall be surface mounted on the trailer office wall. The trailer shall have and four (4) Communications ports: one each for the offices, and two (2) for the center space, which shall be surface mounted on the trailer walls. The Contractor shall place and level this trailer adjacent to and southeast of hangar 1332. The government Project Manager (PM) will show you the location to set up the trailer.

• The LAN and Communication ports shall contain RJ45 connector ports and capable of connecting a Category 6 twisted-pair cable.

b. The Contractor shall submit to the Government for approval the proposed modular trailer, including all required accessories and components they recommend, prior to renting it.

c. The Contractor shall provide one (1) trailer that is approximately 25 feet x 10 feet x 8 feet tall, to include an open floor plan to accommodate three (3) Contractors and three (3) loading crew personnel. [NOTE: these are approximate dimensions and reflect the approximate size of the trailer. The Contractor is responsible to submit and provide trailers that are close to the size needed]. This trailer shall contain four (4) LAN ports, which shall be surface mounted on the trailer walls. The trailer shall have and four (4) Communications ports, which shall be surfaced mounted on the trailer walls. The Contractor shall place and level this trailer adjacent to and southeast of hangar 1332. The government Project Manager (PM) will show you the location to set up the trailer

• The LAN and Communication ports shall contain RJ45 connector ports and capable of connecting a Category 6 twisted-pair cable.

4. The Contractor shall submit to the Government for approval the proposed modular trailer, including all required accessories and components they recommend, prior to renting it.

5. The Contractor may connect the two (2) trailers and make the electrical terminations to existing pad-mounted transformer (T1332A, 208Y/120V, 500kVA) in accordance with the latest edition of the NEC to connect the two (2) each office trailers. Notify the Contracting Officer (CO) and the government PM if the Contractor prefers to connect the two (2) each office trailers to power panels at hangar 1332 vice the existing transformer, and ensure electrical terminations and wiring is performed in accordance with the latest edition of the NEC. The Contractor shall notify 366 CES/CEOFE, Electrical Shop, at 208-828-6604 at least 10 duty days in advance of any electrical outages required to perform the work and complete a Utility Outage form for government approval (attachment 8).

6. If the Contractor connects the office trailers to the transformer (T1332A), the Contractor shall provide a means of disconnect near the hangar 1332 transformer (T1332A) that shall be between the transformer and the office trailers.

7. Base Communications shall perform final terminations for the LAN and Communications ports to connect Government computers, printers, etc.

E. The Contractor shall provide a Free Zone with concrete barriers and cabling with proper attachments between the barriers (attachments 2 through 5) for government approval. The Contractor shall measure the Free Zone area as depicted on the drawings (attachments 3 and 4) to ensure the correct number of K-Rails and cabling. The Free Zone barrier shall consist of the correct number of 10-foot concrete K-Rails, spaced 10 feet apart, with ¾-inch cabling between the K-Rails with the proper means to attach the cabling to the K-Rails. The government will keep the procured K-Rails and cabling for future use.

F. The Contractor shall take proper actions and precautions to control all Foreign Object Debris (FOD) and NOT generate FOD, as damage could occur to aircraft.

G. Conduct a site survey to verify, evaluate and record existing conditions and dimensions to establish a fire protection design and water supply requirements, fire alarm system design, MNS design, and an in situ design for structural repairs for the project.

H. Civil Engineer Squadron (CES) shall provide any as-built drawings and original design drawings and specifications that are available to aid in the inspection and design processes. Where information is not available, Contractor shall be responsible to attain required information during the detailed site surveys and inspections.

I. Hangar 211 is a historic property managed by Mountain Home AFB. In accordance with the installation Programmatic Agreement for compliance with the National Historic Preservation Act, and its implementing regulations at 36 Code of Federal Regulations (CFR) 800, Protection of Historic Properties. The State Historic Preservation Office (SHPO) has previously approved earlier designs and per the Base Cultural Resources Manager there is no need to issue this new design to SHPO for approval and consultation.

1. Appropriately update and/or incorporate into the design for in situ correction of structural deficiencies identified during your detailed surveys and inspections, to include, but not limited to:

a. In situ structural repairs to each truss and various structural members,

b. Roof diaphragm,

c. Roof truss members,

d. Retrofit repairs to roof truss bottom chords,

e. Connection of roof trusses to concrete supports,

f. Bracing of gable end walls,

g. Repair of damaged lintels over openings (where they occur),

h. Repair of damaged exposed concrete buttresses,

i. Repair of building structural system to resist all necessary vertical and lateral loads as required by UFC 1-200-01, and all referenced codes and standards contained therein.

2. Evaluate the roof structure, roof, bowstring trusses, shear wall, column-to-truss, bracing, and connections in both the hangar and annex/administration areas of the building for applicable design loads and vibration from wet pipe sprinkler system, fire alarm system, MNS, electrical system, and existing IR heaters.

3. The project shall involve any necessary demolition, construction, and installation needed to accommodate the required in situ structural repairs, automatic sprinkler system, fire alarm system, and MNS, and re-installation of existing IR heater system, and electrical systems removed to support the work. The work includes, but is not limited to, the following:

a. Remove or modify existing piping, heating, cooling, IR heaters, and mechanical systems, as appropriate for structural repairs.

b. Remove any inactive (abandoned) or existing conduit, fire alarm cabling, circuits, fire alarm control units, or fire alarm annunciating units, as appropriate.

Replace with new, code compliant, activation and monitoring/notification controls and systems for the automatic sprinkler system, fire alarm system, and

MNS.

Attachment 5 contains the hazardous material survey and inspection report, which contains results from a hazardous material inspection of hangar 211 for asbestos containing material (ACM) and lead-based paint (LBP).

J. The design work includes:

1. Conduct pre-design conference to discuss project objectives, steps for completion, and obtain design requirements from users and all involved offices. Conduct detailed site inspections and walk-through of Hangar 211 to assess the in situ structural repairs, roof repairs, the automatic sprinkler system, fire alarm system, and MNS to verify existing conditions, dimensions, and establish in situ design requirements and repair requirements for the project.

2. 35% Design:

a. Plans and Specifications: Prepare 35% drawings that include, but not limited to, site plans, demolition plans, floor plans, elevations, required sections and details, finish schedule, electrical and power plans and details, fire alarm activation and monitoring/notification drawings and details, and mechanical plans and details.

Specifications shall be outline in nature addressing all areas of work involved.

b. Fire Protection Engineer (FPE) shall provide fire protection design analysis and Life Safety Plans per UFC 3-600-01, Section 1-7.2 and adhere to other applicable requirements per UFC 3-600-01 throughout the course of the design work.

c. Design Analysis. The design analysis shall include information for all disciplines.

d. Review: MHAFB will review the submittal and provide comments. This will be followed by an in-person or virtual review meeting.

3. 65% Design: Progress the 35% design to the 65% design stage.

a. Plans and Specification: Prepare 65% drawings that include, but not limited to, site plans, demolition plans, floor plans, elevations, required sections and details, finish schedule, electrical and power plans and details, fire alarm activation and monitoring/notification drawings and details, and mechanical plans and details.

Provide specifications as required to address all areas of work involved.

b. FPE shall provide fire protection design analysis and Life Safety Plans per UFC 3-600-01, Section 1-7.2 and adhere to other applicable requirements per UFC 3- 600-01 throughout the course of the design work.

c. Design Analysis: The design analysis shall include information for all disciplines.

d. Review: MHAFB will review the submittal and provide comments. This will be followed by an in-person or virtual review meeting.

4. 95% Design: Progress the 65% design to the 95% design stage.

a. Plans and Specifications: Prepare 95% drawings that include, but not limited to, site plans, demolition plans, floor plans, elevations, required sections and details, finish schedule, electrical and power plans and details, fire alarm activation and monitoring/notification drawings and details, and mechanical plans and details.

Provide specifications as required to address all areas of work involved.

b. FPE shall provide fire protection design analysis and Life Safety Plans per UFC 3-600-01, Section 1-7.2 and adhere to other applicable requirements per UFC 3-600-01 throughout the course of the design work.

c. Design Analysis. The design analysis shall include information for all disciplines.

d. Review: MHAFB will review the submittal and provide comments. This will be followed by an in-person or virtual review meeting.

5. Final 100% Design: Incorporate all comments from the 95% design and progress the

95% design to the Final 100% design stage.

a. Plans and Specifications: Prepare 100% drawings that include, but not limited to, site plans, demolition plans, floor plans, elevations, required sections and details, finish schedule, electrical and power plans and details, fire alarm activation and monitoring/notification drawings and details, and mechanical plans and details.

Provide specifications as required to address all areas of work involved.

b. FPE shall provide fire protection design analysis and Life Safety Plans per UFC 3-600-01, Section 1-7.2 and adhere to other applicable requirements per UFC 3-600-01 throughout the course of the design work.

c. Design Analysis. The design analysis shall include information for all disciplines.

d. Review: MHAFB will back-check the final submittal to be sure all 95% comments have been incorporated.

K. Technical Criteria and Standards: The design shall comply with the following technical criteria and standards (utilizing the most current versions), and the revision to these standards in effect at the 35% design milestone, which is locked in throughout the life of the project.

1. Sundown Policy Foam Fire Suppression Systems (Change 2) 29Dec2022

2. UFC 1-200-01, DOD Building Code (General Building Requirements), latest revision

3. UFC 3-101-01, Architecture, latest revision

4. UFC 3-110-03, Roofing, latest revision

5. UFC 3-201-01, Civil Engineering, latest revision

6. UFC 3-600-01 Fire Protection Engineering for Facilities, latest revision

7. UFC 4-211-01, Aircraft Maintenance Hangars, latest revision

8. UFC 4-021-01, Design and O&M: Mass Notification Systems

9. 36 CFR 800, Protection of Historic Properties

L. Submittal Schedule and Requirements for Design: The schedule for delivery of Final Design Documents is assuming a five-day workweek after Notice to Proceed. The time

SUBMITTAL SCHEDULE

REQUIREMENT DELIVERY TOTAL TIME

1 Pre-Design Mtg, NTP 0 0 2 Design Submittal and Inspections, 35% 45 45 3 Government Review, 35% 10 55 4 35% Review Mtg, ~5 days after review 5 60 5 Design Submittal, 65% 30 90 6 Government Review, 65% 15 105 7 65% Review Mtg, ~5 days after review 5 110 8 Design Submittal, 95% 30 140 9 Government Review, 95% 15 155

10 95% Review Mtg, ~5 days after review 5 160 11 Final 100% Design Submittal 15 175 12 Government Review, 100% 5 180

M. Progress Schedule and Written Reports. Provide a record of all conferences, meetings, discussions, verbal directions, and telephone conversations, on matters related to this delivery order. Forward each report to the Government no later than 5 working days after the event. The Government will distribute reports, as appropriate.

N. General Requirements. Furnish submittals to the Contracting Office at MHAFB.

1. Drawings are required to be submitted in pdf format. At final submittal, submit drawings in pdf and the latest AutoCAD DWG format. Prepare all AutoCAD drawings to conform to applicable provisions of the Tri-Services CADD/GIS Systems Technology Center's Architectural, Engineering and Construction (A/E/C) CADD Standards. Since USAF is issuing laptops without CD readers, electronic media will need to be provided via DoD SAFE file transfer. For example, CAD files, native specification files (e.g., Specs Intact), MS Word files, MS Excel files, PDF files, etc.

shall be provided to the Government via DoD SAFE. The CONTRACTOR will need to email the Government (Michael Koelsch at michael.koelsch.1@us.af.mil) and ask to be provided a DoD SAFE drop-off request. Upon completion of the work, data, and media shall become the property of the Government.

2. Design hard copy drawings shall be submitted per Distribution Schedule table shown in the section below of this SOW.

3. Electronic submittals (e.g., specifications, design analysis, drawings, etc.) shall be in PDF file format, provide clearly labeled bookmarks for each document and drawing set. At final submittal, provide a copy of specifications in MS Word format, Specs Intact format, and in PDF file format.

4. Execution of the Work. The Contractor shall always furnish sufficient technical supervisory and administrative personnel to ensure execution of the work in accordance with the delivery schedule. The Contractor shall be responsible for checking calculations, drawings, details, notes, and other work products to verify the design intent, technical adequacy and scope of work have been met.

5. Project Management. The Contractor shall assign an individual to serve as a single point of contact between the Contractor and the Government for all services required under this delivery order.

6. Conferences and Meetings:

a. Conduct all meetings and conferences pertinent to the services under this Delivery

Order as directed by the Government, to include chairing all meetings and managing meeting time effectively.

b. Meetings other than those stated herein, may be held whenever requested by the Government for discussion of questions and problems relating to the services required under this Delivery Order.

7. Work Authorization. Any work done without being directed to do so, in writing, by the Government will be done at the Contractor's risk. Work beyond the original scope shall be accomplished only at the direction of the Contracting Officer.

8. Certification of Computer Media. All delivery media (emailed attachments, items sent mailto:michael.koelsch.1@us.af.mil via DoD SAFE, etc.) for computer data shall be certified by the A/E to be free of known computer viruses.

DISTRIBUTION SCHEDULE

Design Submittal Number of Copies

Reports/Narratives (Hard Copies)

Drawings (Hard Copies)

35%, 65%, 95% Designs

1 electronic copy 2 (Letter) 1 electronic copy 2 (ANSI B)

100% Final Design (Stamped)

1 electronic copy 2 (Letter) 1 electronic copy 2 (ANSI B) and 1 (ANSI D)

Note: Letter = 8-1/2” x 11”; ANSI B = 11” x 17”; ANSI D = 22” x 34”

O. The Contractor shall provide adequate professional supervision, quality control, and labor to ensure the accuracy, quality, timeliness, and completeness of the work during execution of construction. The Government will allow dual hatting of the Quality Control Manager (QCM) and Site Safety and Health Officer (SSHO). The SSHO shall not serve as the Superintendent.

The Superintendent shall be a sole individual with his/her responsibilities described in the specifications. The QCM is not allowed to perform the duties of the Superintendent. The QCM and Superintendent shall be separate personnel and capable of performing their respective duties in accordance with the specifications.

P. The Contractor shall follow the Three Phase of Control during construction as per SECTION 01 45 00.10 20 (See attachment 5).

Q. The Contractor shall meet and follow the latest edition to applicable 29 Code of Federal Regulations (CFR) 1926 (OSHA standards for construction) and any other applicable safety standards, laws, and regulations during execution of the work. The Contractor must notify Safety, Base Contracting, and Civil Engineering on any safety emergencies.

R. If the Contractor must disturb any ACM identified in attachment 2 to conduct work, Contractor shall abate identified ACM in accordance with the latest Asbestos National Emission Standards for Hazardous Air Pollutants (NESHAP), Title 40 CFR, Part 61, Subpart M, prior to any demolition and repairs.

S. Where feasible, the Contractor may conceal raceways and conduit for electrical and fire alarm systems wiring above ceilings and in finished areas that have finished walls or finished surfaces.

T. Where feasible, the Contractor may conceal electrical conduit and fire alarm conduit within walls and/or above ceiling tiles. The Contractor shall repair hangar 211 timber bowstring trusses, top chord delamination, structural members, lean-to (Wing or Administration areas) structures and roof system, exterior ladders, concrete buttressed wall, install new lateral load collector system, including concrete wall extensions, collector connection with attachments to roof deck and associated attachments to concrete wall extension, repair, remove and/or replace damaged sway bracing located between trusses, and install a new roofing system in accordance with the design-build drawings, specifications, design analysis, and calculations the Contractor generates. Below is a general list of requirements that must be accomplished the Contractor’s design-build documentation, but is NOT an exhaustive list of requirements:

1. The Contractor shall remove existing roof system, including roof insulation, roof accessories, roof drains, flashing, and trim down to existing timber roof deck for the entire hangar and lean-to structures.

2. The Contractor shall remove eave and soffit materials and replace with new timber matching original historic appearance.

3. The Contractor shall remove plywood sheathing planks near truss bearing areas for installation of new lateral load collection system and install new purlins and plywood sheathing.

4. The Contractor shall install new structural plywood sheathing overlay over existing plywood sheathing planks.

5. The Contractor shall remove metal building roof panel and install new metal deck over metal building lean-to building.

6. The Contractor shall repair deteriorated concrete near roofing interface with concrete walls and buttresses as specified.

7. The Contractor shall install new roofing system.

8. The Contractor shall install new gutter and downspout system.

9. The Contractor shall install a new horizontal lifeline fall protection system.

U. The Contractor shall coordinate with the Government PM, Michael Koelsch, 10 duty days prior to scheduling an outage to tie in and re-work the fire water main and fire riser(s). The Contractor shall use the “366 CES Utility Outage Request Form Recent” (attachment 8) to obtain government approval prior to performing the outage. The Contractor should provide a length of time you need to complete the work. Government PM shall coordinate with the MHAFB WFSM Shop and the MHAFB Fire Department to schedule the outage to enable these stakeholders to secure affected fire pumps, ready the fire pump building (building 197), and to place any affected buildings in a safe status to support your work.

V. The Contractor shall notify 366 CES/CEOFE, Electrical Shop, at 208-828-6604 at least 10 duty days in advance of any electrical outages required to perform the work. The Contractor shall use the “366 CES Utility Outage Request Form Recent” (attachment 8) to obtain government approval prior to performing the outage.

W. The Contractor shall temporarily disconnect or remove existing utilities supported from trusses including, but not limited to, radiant heating circuit, electrical conduits, and light fixtures, etc. to perform necessary truss repairs. Reinstall utilities to be fully functioning when repairs are complete. This work shall be done in accordance with the design drawings, specifications, design analysis, calculations, and fire protection/life safety/accessibility code review (attachments 2 through 5).

X. Re-install IR heat piping, re-utilizing existing burner assemblies, fans, tubing, and other infrared heating components. Extend combustion air duct, flex connectors, and gas piping to accommodate re-installing the IR heating system.

Y. Remove existing de-stratification fans including controls systems and appurtenances associated with fans.

Z. The Contractor shall retain structural engineer licensed in the State of Idaho to design and detail truss shoring system to safely remove and replace specified truss components. All shoring and access scaffolding to replace or repair truss elements is the responsibility of the Contractor. The Contractor may use existing shoring; however, determining its re-use is the responsibility of the Contractor's structural engineer. Repair concrete slab and paint (a Chemical-Resistant Urethane

(CRU) coating) following removal of all shoring. This work shall be done in accordance with the design documentation (attachments 2 through 5).

AA. The Contractor shall provide site grading, drainage, and layout improvements as required to promote positive drainage away from the facility, including installation of roof drainage collection and conveyance systems, as shown on design drawings (attachments 2 through 5).

BB. The Contractor shall use the AF IMT 3000 Material Approval Submittal (attachment 9) for all submittals.

CC. The Contractor shall use the AF IMT 3065 Contract Progress Report (attachment 10) for reporting project percent complete for invoicing purposes monthly.

DD. The Contractor shall use the Contractor Yard Request Form-2 (attachment 11) to request a lay-down area for their trailers, equipment, supplies, and material.

Send all hardcopy submittals to:

366 CES/CENM

Attn: Michael C. Koelsch 1030 Liberator St., Bldg. 1300 Mountain Home AFB, ID 83648

Attachments:

1. Sundown Policy Foam Fire Suppression Systems (Change 2) 29Dec2022

2. Hangar 211 Final Design Analysis

3. Hangar 211 Final Design Drawings Full Size

4. Hangar 211 Final Design Drawings Half Size

5. Hangar 211 Final Specifications

6. MFR MNS Textual Signs

7. MNS standardized pre-recorded message

8. 366 CES Utility Outage Request Form Recent

9. AF IMT 3000 Material Approval Submittal

10. AF IMT 3065 Contract Progress Report

11. Contractor Yard Request Form-2