SOW FOR RED BIRD CONCRETE PADS.docx

STATEMENT OF WORK

For

THE RED BIRD EXECUTIVE AIRPORT

Construction of Concrete Pads

1.0 Scope of Work

The contractor will provide labor, materials, tools, equipment, travel, permits/application fees, mobilization / demobilization costs for contracting staff to travel to the Red Bird Executive Airport located in Dallas, Texas to install (2) concrete pads for two 50 foot self-supporting towers per the attached drawing. The proposed pad will adhere to the engineered design. The proposed pad will adhere to the engineered design with an exterior 3-foot-wide parameter trenched halo outside of the poured pad. The contractor will prepare the site and construct the poured in place concrete per the completed pad plan. Contractor will ensure that the installation of the pad meets local building guidelines. All materials removed must be hauled away from the construction site and properly disposed.

The contractor will be required to provide a site specific daily report detailing the work completed as it relates to the scope of work and government furnished information. Contractor will be required to submit a work plan that identifies the work to be completed, the methods in which the work will be accomplished and materials to be used. Contractor will not be allowed to commence work until the work plan is approved and meets the construction scope and requirements defined herein. If the contractor requires a staging area(s) outside of the recommended areas, a location will need to be proposed and pre-approved by all stakeholders prior to construction mobilization.

Completion of the work will include other items as noted in this Statement of Work (SOW) and Section 4.0 related to milestones. All work items denoted in Section 3.0 may require additional effort for items not specifically detailed and/or described in the SOW and information such materials will be required to meet standard industry requirements and specifications for acceptance and installation. Installation detail to be in conformance with the specifications and applicable industry standards. All materials and craftsmanship shall be in conformance with the identified specification.

1.2 Scope of Service

The contractor must provide the major work activities listed below.

1.2.1 Site Geological Features

Contractor must refer to the provided/attached Geo-Technical report. Specifically, the Rone Engineering Report performed during March 2019, Project Number 19-23356.

1.2.2 Subsurface Utility Exploration

Contractor must refer to government provided design drawings.

· Excavation limits for tower foundations and all communication trenching to be scanned by the contractor for utilities and other subsurface obstruction impacting construction. Where obstructions are found within the tower foundation excavation or the recommendations of the Geo-Technical Report cannot be implemented, the contractor will be responsible for having a Geo-Technical representative available to provide earthwork recommendation as necessary.

· Contractor will utilize all extreme measures before trenching.

1.2.3 Foundation Installation

Contractor must refer to government provided design drawings.

· Although site soil conditions are known; each and every known condition cannot be anticipated. Earthwork limits will require compaction based upon a proctor collected and laboratory tested by an independent third party to be included in this scope of work as a part of the foundation installation service. See “Fill Placement Criteria” page 10 of the Rone Engineering Geo-Technical Report.

· The contractor must install one concrete foundation for each tower location. The foundation is to be made of reinforced concrete with epoxy coated billeted steel.

· Expanded limits of trenching will be a work requirement. An extended 3-foot halo beyond the outer edges of the slab foundation will be necessitated. The depth of the exterior trench will be no greater than the lowest point of the foundation. All removed materials will be deposited within the immediate area but, will not hinder future work.

· Foundation excavation and concrete placement will be subject to quality control testing to confirm compaction requirements, fresh concrete requirements and compressive strength (breakage) requirements are met. Sampling and testing to be completed by an independent third party to be included in this scope of work as a part of the foundation installation service.

1.2.3.1 Foundation is anticipated to incorporate the following details;

· Type 1 foundation, compression strength, 4000 psi @ 28 Days

· # 6 and # 8 sized Rebar installed per drawing

· Horizontally, a 16 foot by 16 foot foundation

· The bottom of the foundation will be 3’ 10” below grade; 7 inches above*

· Slab will be 52 inches thick at its highest point

· Foundation will have four 4-bolt anchors extended 6 inches above the concrete grade

· Concrete shall have a minimum 28-Day Compressive Strength of 4000 PSI in accordance with ACI-318-14 or latest edition. Rebar to conform to ASTM Specification A615 Grade 60

· All rebar to have a minimum of 3-inch concrete cover.

· All exposed concrete corners to be chamfered ¾-inch.

· The foundation design is based on the Geotechnical Report 19-23356 provided by Rone Engineering.

· See the Geotechnical Report for compaction requirements, if specified.

· The foundation is based on the following factored loads:

Based on the construction plans, the contractor will install two 4-inch rigid conduit PVC piping and one 1-inch rigid conduit PVC pipe within the slab foundation with a minimum of 6-inch clearance of exiting threaded pipe on the opposing ends.

*The bearing surface variance could be between 6-12 inches above grade but, the base foundation requirement below grade has a 3 foot minimum obligation

1.2.4 Construction Specifications

Contractor must refer to government provided design drawings and the Geotechnical Report 19-23356 provided by Rone Engineering. Where conflicts between the Geotechnical Report and the Government Furnished Construction Specifications arise, the Geotechnical Report will govern.

· Excavation

· Backfill/compaction

· Tower anchoring

· Concrete placement and finishing

· Subgrade

1.3 Applicable Documents

· Rone Geo-Technical Report, March 2019, Project Number 19-23356 (See attachment 2)

· Foundation Design Drawings for final product, FWNA #21910305 (See attachment 3)

· Antenna Products, Tower Manufacturer Tower Design Drawings for anchoring information, 0980-0575 (See attachment 6)

· Civil Construction Drawings-RBDA-RTR-G000, under development 95% complete (See attachment 5)

· Construction Specifications for Earthwork, Excavation, Concrete and other items as necessary to govern quality of installation, provided later

· Antenna Products, Tower Manufacturer, Anchor Template for incorporation into foundation installation-0980-0576 (See attachment 4)

· TIA-222-H

· SEI/ASCE 37-14

· American Concrete Institute (ACI) Detailing Manual; and

· Applicable ASTM Standards.

2.0 Contractor Technical Requirements

Contractor will:

· Provide all necessary labor (or sub-contract labor) of appropriate skill to accomplish all tasks in this SOW

· Submit Work Plan and Close Out Report as Described in Section 3.0

· Travel as necessary to accomplish all tasks in the SOW.

· Provide specialized services to accomplish all tasks specified in the SOW.

· Provide procurement services as required for materials and equipment.

· Complete all tasks as required in Section 3.0

· Provide deliverables as required in Section 3.1

· Schedule and coordinate as required by Section 4.0

· Provide progress/compliance as required in section 4.0.

2.1.1 General Conditions

· Tower Loading must be in accordance with TIA-222-H.

· Existing conditions and field observations must be verified with testing

· Contractor must verify all dimensions prior to commencing work

· Contractor is responsible for all material coordination

· Contractor must work within the requirements of SEI/ASCE 37-14 during the construction phases

· Anchor bolts will be hot dipped and galvanized in accordance with ASTM A123 and ASTM A153 standards.

2.1.2 Site

· Foundation must be a minimum depth of 3 feet below finished subgrade elevation. Precautions should be taken to protect the bearing surface. It is highly advised that a lean concrete mixture be considered.

· Contractor must refer to the Rone Engineering Report No. 19-23356 for all of the requirements necessary to prepare the subgrade.

2.1.3 Concrete

· Concrete must have a minimum compressive strength of 4000 PSI at the 28th day of duration with a 5% plus or minus Air-Entrainment;

· Reinforcing steel must be ASTM A615 Grade 60 unless noted as otherwise;

· All reinforcement must be detailed in accordance with the latest ACI detailing manual;

· Contractor must coordinate all penetrations, conduit, chamfers and embedded items with the FAA Contracting Officer’s Representative (COR) prior to concrete placement;

· Sloping the top of the foundation 1 inch is a requirement. The slope will travel outward from the centerline to the surface edge(s) as detailed in the drawings;

· Top of the surface foundation must be a minimum of 6 inches and no more than 12 inches maximum above grade.

2.1.4 Hardware

· Contractor must refer to Antenna Products drawings 0980-0575 for installation requirements for the base plate, number of anchor rod nuts and loading information.

2.2 Deliverables

· Civil, Foundation and Tower Construction As Builts;

· Construction schedule;

· Sampling and test reports;

· 28 day concrete compressive strength test;

· Materials documentation

3.0 Tasks

The tasks to be performed under this SOW are described below in several categories.

Phase I: Construction Planning

· Contractor must provide complete project schedule that denotes start dates, end dates and duration of all major construction activities. Projects schedule may include as many lines and work activities as necessary for the contractor to control and manage the project. However the following items must be included in the project schedule;. Security Clearance, Pre-work Meeting, Mobilization, Removal, Earthwork, Paving, Final Inspection and Demobilization.

· Schedule must be reasonable and denote working hours for each activity or project in general to coordinate operations and allow sufficient mobilization and demobilization times. The agency anticipates the Contractor is approved to work Monday through Friday 0600-1800. Weekend end work is negotiable.

· Contractor must comply with the detailed engineered plan for the concrete pad.

· Work plan and schedule, once submitted, will be required to be approved by Federal Aviation Administration (FAA) personnel prior to any construction operations.

Phase II: Construction/Installation

· Contractor must prepare the site and construct the poured site per the completed pad plans.

· Contractor must ensure that the installation of the pads meet local, state and federal building guidelines.

· Contractor must be present and attend final inspection and acceptance performed by government.

Phase III: Project Close Out

Contractor must submit project close out report and photographs of all completed work according to or as defined in Section 2.2 Deliverables

3.1 End Results/Deliverables

The end-resulted/deliverables to be completed and submitted under this SOW is the construction and installation of (2) concrete pads.

3.2 List of Deliverables by Task

The deliverables to be completed and submitted for each task under this SOW are described below. Acceptance of the work will be based on conformance with construction drawings, federal guidelines for accessibility, and other government furnished information provided by FAA.

· Construct and install concrete pad per the approved plan. Reference 2.2 entry

· Project Closeout Report. Reference Appendix A

4.0 Schedules/Milestones

Project scheduling and milestones for the site must be submitted within 5 business days of award and include the following milestones:

· Concrete Pad Approved Design

· Work Plan and Work Schedule

· Stakeholder Approval (FAA)

· Pre-work Meeting, (via telecom)

· Mobilization

· Site Work

· Final Inspection and Acceptance

· Demobilization

5.0 Other Considerations

A third tower will have to be removed. Contractor work being performed (material excavation) will not interfere with the 3rd tower being removed by the FAA.

6.0 Progress/Compliance

The following must be coordinated with FAA in order to monitor progress and ensure compliance.

· Pre-work Meeting (via telecom)

· Final Inspection and Acceptance

· Submission Documents in Sections 3 and 4

7.0 Period of Performance

The anticipated schedule will begin within 30 days from the date of award. A pre-construction meeting must be held during that same time frame. Contractor must submit a schedule and any security vetting information within 5 days of the award or the Notice to Proceed (NTP) which ever date is later. Upon site access approval, the construction start and construction end duration must be completed within the projected 21 calendar days. Once, work commences it will be continuous unless mutually agreed upon by all parties. The completed work will be inspected prior to demobilization but, final acceptance will not be provided until all certified documentation relating to materials, red-line drawings if required, standards and testing results have been submitted. Since, the 28 day concrete compressive strength test is a requirement; it is anticipated the close out package will be accomplished no later than 45 days after mobilization.

8.0 Place of Performance

Project Location

Tower site is located at the Red Bird Executive Airport located at 5303 Challenger Drive, Dallas, Texas 75237. Latitude: 32.6769390 Longitude: -96.8710550.

APPENDIX A: Close-Out Report Outline

A defined document which is site specific will be provided prior to the close out activities.

Project Close Out Outline

· Title Page with site identification

· Summary of work completed.

· Summary of work modified from approved work plan.