Volume 1, Tab A: Factor 1  Technical Approach Working Draft V.2

Project Synopsis and Understanding of Scope

The Tinker A.F.B 2.0 Food and Beverage Operations mission will be supported through the comprehensive design-build remodel and renovation of Buildings B.5905 and B.5907. This strategic project focuses on updating interior finishes, replacing aging mechanical and electrical systems, and modernizing support structures to enhance base quality of life. The scope encompasses complete interior finish replacement in affected areas, structural repairs of the dining facility mezzanine, expansion joints in floors, walls, and ceilings, repairs to the building envelope/exterior joints, and a complete conversion of the B.5907 laundry facility into a modern post office. To ensure a professional, secure, and compliant execution, the design-build team will integrate architectural, structural, mechanical, electrical, plumbing, and environmental specialties.

To achieve the level of operations envisioned by the Government, the design partner, Yaeger, will lead the multidisciplinary engineering and architectural design process. The renovation requires proper handling and abatement of hazardous materials, specifically lead-based paint and asbestos-containing materials (A.C.M), which were identified in the mechanical mezzanine and east mechanical room. Mezzanine structural supports will be repaired and reinforced to bear the loads of upgraded hvac equipment, which are designed to support occupancy and control humidity. A new 6-foot-wide handicap-accessible concrete ramp and rebuilt stairs will be constructed at the northeast entrance of the dining facility, ensuring barrier-free accessibility in strict compliance with the Americans with Disabilities Act (A.D.A) and Architectural Barriers Act (A.B.A) standard.

1. Proposed Method of Accomplishing the Work

A highly disciplined design-build workflow is structured into design, construction, commissioning, and closeout phases to achieve all technical performance objectives within the required contract completion period.

Standard-Driven Design Phase Managed Through Multi-Disciplinary Reviews

Design integrity and technical correctness will be maintained through a structured three-phase submittal process (Interim, Final, and Design Complete) in strict compliance with Section 01 33 16.00 10 and E.R 1110-345-700. The design team, led by Yaeger, will integrate constructability input from construction professionals starting at day one. An Initial Design Conference will be held to confirm technical criteria, submittal schedules, over-the-shoulder review protocols, and the Design Quality Control Plan (D.Q.C.P). Over-the-shoulder reviews will be conducted virtually to accelerate the review cycle and ensure continuous alignment with u-sace Tulsa District expectations.

The Interim Design package (nominally 65% development) will deliver a complete multidisciplinary analysis, including architectural finish schedules, structural load calculations for the mezzanine hvac support frames, hazardous material abatement sequencing, and life safety / fire protection analyses. Following incorporation of Government comments via the DrChecks system, the Final Design package (95%) will be submitted for a 14-calendar day backcheck. The Design Complete package (100% corrected) represents the fully coordinated Issued for Construction (I.F.C) documents. No construction activity, including mobilization or demolition, will commence on any specific scope until the Government formally accepts the corresponding design package.

Disciplined Construction Phase Coordinates M.E.P and Structural Renovations

The physical transformation will initiate with targeted hazardous material abatement under strict regulatory controls. Licensed abatement personnel will execute lead-based paint and asbestos remediation in accordance with Sections 02 82 00 and 02 83 00. High-efficiency particulate air (hepa) containment barriers and negative pressure monitoring will prevent the migration of dust or fibers into occupied areas. Following abatement, structural repairs to the mechanical mezzanine, floor, and roof frames will be performed. Steel reinforcement and localized framing adjustments will be executed in accordance with structural details to safely distribute the loads of new hvac equipment. New floor, wall, and ceiling expansion joints will be installed at designated points to accommodate thermal movement. For Building B.5907, eifs and existing metal siding/roofing will be removed to the steel structure, and new exterior wall assemblies and standing seam metal roofing (S.S.M.R) will be constructed to provide a high-performance, watertight building envelope.

Streamlined Commissioning and Closeout Accelerate Facility Handover

Operational readiness will be verified through a rigorous commissioning process led by a Lead Commissioning Specialist (CxC). Total system performance will be documented through pre-functional checklists and comprehensive Functional Performance Testing (F.P.T) for all new hvac, electrical, and plumbing systems in accordance with Section 01 91 00.15. Building enclosure integrity will be validated via a specialized Building Enclosure Commissioning Provider (B.E.C.x.P), utilizing thermography and mandatory air leakage pressure testing per Section 01 91 19. Complete Operations and Maintenance (O&M) manuals and a completed Facility Data Workbook (F.D.W) will be submitted to the Government for review prior to the Beneficial Occupancy Date (B.O.D), supporting seamless transition to Base Civil Engineering.

2. Type of Site Field Verifications to Be Performed

Meticulous, multidisciplinary site field verifications will be performed by registered professional engineers and architects to ensure proposed technical solutions are fully grounded in actual physical conditions. Confirmed baseline details mitigate post-award rework and minimize construction latency:

- Structural Verification: Yaeger's structural engineers will inspect the existing girts, columns, and roof structures of Buildings B.5905 and B.5907 to confirm their load-bearing capacity and identify any localized deterioration. Verification of concrete floor thickness and reinforcement spacing is required prior to finalizing the design of the heavy mechanical mezzanine support frames.

- Utility Routing and Electrical Service: Physical field tracing of the underground electrical service feeder route from the west transformer will be performed to confirm spatial clearances, utility depth, and soil conditions. Connection parameters at the existing main switchboard will be verified to resolve sizing discrepancies before releasing long-lead equipment procurement.

- Dimensional and Expansion Joint Survey: Architectural and engineering field measurements will map the existing floor, wall, and ceiling joints in B.5905 to ensure precise alignment of new expansion joint assemblies. Dimensional surveys at the northeast entrance will verify exact vertical and horizontal coordinates to support the layout of the new 6-foot-wide concrete ramp.

- Hazardous Material Assessment: Abatement planners will conduct supplementary confirmatory testing for lead-based paint and asbestos in the mezzanine and east mechanical room to refine work zone limits. This validation establishes clear safety containment boundaries before any structural demolition begins.

3. Any Phasing or Anticipated User Impacts

Continuous mission readiness for the food service facility is the primary objective. Phased work sequences will be implemented to prevent any degradation of military dining operations and ensure complete physical safety.

A clear conflict exists in the solicitation regarding building occupancy during construction: Section 00 22 00, Paragraph 1.0 notes that the buildings must remain occupied and operational, while S.O.W Section 01 11 00, Paragraph 1.3.5 states that work will take place in an occupied building but prohibits entry without prior approval. To resolve this contradiction and maintain continuous base dining capability, a phased execution plan will partition work areas into isolated construction zones. Work in Building B.5907 (the post office conversion) will be structurally and environmentally separated from Building B.5905 via temporary dust-tight insulated wall barriers, allowing demolition of the B.5907 eifs, siding, and roof structure to proceed independently.

Any temporary utilities, plumbing, or power interruptions required for cutovers to new systems will be executed during off-peak hours (between 4:00 P.M and 7:00 A.M) or over weekends. Outage requests will be filled out and submitted to the 72 A.B.W Outage Coordination Team at least 21 calendar days in advance, in strict compliance with the T.A.F.B Planned and Emergency Outages S.O.P. This proactive coordination ensures that adjacent facility services suffer zero mission disruption.

4. Protection of Government Property During Construction

Uncompromised safety and asset protection will be achieved through rigid physical controls and dust-mitigation protocols. Structural elements and active dining facilities will remain completely isolated from the active construction zones.

Floor, ceiling, and wall surfaces adjacent to construction zones will be covered with heavy-duty fire-retardant protective sheeting to prevent mechanical damage. Rigid, dust-tight temporary partitions constructed from light-gauge metal studs and gypsum board will isolate the construction zones from active dining areas. In accordance with Section 01 50 00, temporary negative-pressure air filtration units equipped with hepa filters will be operated continuously to prevent the migration of construction dust or hazardous fibers. Temporary climate controls and dehumidification will be maintained during the hvac system changeouts to protect existing interior finishes from moisture accumulation and mold growth.

All mechanical, electrical, and plumbing penetrations through existing structural elements will be physically coordinated across all disciplines and approved by the structural engineer prior to any field drilling. Masonry bond beams, structural columns, and fully grouted masonry walls will be completely protected, and the engineer will be notified immediately if any field discrepancy is identified.

5. Project Assumptions

To ensure transparency and maintain the construction schedule, this technical approach is founded on the following baseline assumptions and project impacts:

Table summary: Project assumptions and their impacts on the mission and client for three categories. For Environmental Safety, the project assumes government-provided surveys are the definitive baseline for ACM and lead-based paint, ensuring targeted remediation and adherence to Tinker AFB safety standards. Regarding Structural Substrates, it is assumed that existing girts, columns, and mezzanine floor structures can support new HVAC and roofing systems, which reduces design latency while relying on engineering RFIs for any localized deterioration. Finally, for Utility Infrastructure, the project assumes the existing main transformer and distribution lines have sufficient capacity to avoid upstream upgrades, securing continuous base power distribution via coordination with the 72 ABW/CE.

6. Clarifications and Solicitation Exceptions

To ensure proposal compliance and mitigate post-award risk, several critical ambiguities and technical discrepancies within the solicitation documents require formal clarification:

- Switchboard Sizing Discrepancy: The S.O.W in Section 01 11 00, Paragraph 1. 2(1) calls for a 2000.A Main Switchboard, while Paragraph 1. 2(3) and drawing schedules (E.S-101 and E-601) refer to a 1600.A breaker. The technical approach assumes a 2000.A switchgear rating to ensure full capacity for the upgraded mechanical systems.

- Building Occupancy Status: The project description states that the buildings will remain occupied and operational throughout construction, yet S.O.W Section 01 11 00, Paragraph 1.3.5 states that the building is occupied and entry is prohibited without prior approval. The technical approach assumes that work will be executed in coordinated, isolated phases, allowing partial occupancy under pre-approved access protocols.

- Out-of-Scope clin Item (Hangar Signage): Section 01 20 00, clin 1006 (Paragraph 1.5.11) details the requirement to 'Remove, Paint, and Reinstall Exterior Signage above Hangar Doors. 4 patches and 1 AWACS A.C.' Because this task order covers a Dining Facility (DFAC) Remodel and Renovation, this requirement is assumed to be an administrative copy-paste error and is excluded from the technical approach.

(Missing Info) Key Questions for Subject Matter Experts and Designer

To finalize this narrative and transition the working draft into a 100% compliant technical approach, the following questions must be resolved by the Project Manager (John Norman/Josh Long) and the lead designer (Yaeger):

1. For Building B.5907, what is the design team's proposed strategy for the temporary relocation of the post office function while the existing eifs, siding, and roof are removed to the steel frame?

2. What is the preferred method for the mechanical mezzanine floor repairs? Will structural reinforcing plates be welded to existing framing, or does the load require additional support columns to the ground floor?

3. Does Yaeger anticipate that the 6-foot concrete access ramp will require subgrade soil stabilization or deep foundation piers, based on the geotechnical data?

4. How will the construction team manage dust and noise control during lead-based paint and asbestos abatement in Building B.5905 while dining operations remain active? Will a temporary negative-pressure enclosure be constructed in the main dining hall?

5. Please confirm if the electrical bore from the west transformer under the post office area requires a 1/4"-wall steel sleeve or schedule 80 P.V.C casing.