SOW.pdf

STATEMENT OF WORK

Exterior Stairway, with Options

Alexandria, LA April 2019

1. OUTLINE OF SCOPE

The radar building is an active, multi-story air traffic control radar facility located in Alexandria, LA. This facility was originally constructed during the early 1950’s.

This project includes work as detailed in this SOW and shown on drawings:

AEX-D-ARSR-G009

AEX-D-ARSR-C002

AEX-D-ARSR-A003

AEX-D-ARSR-A004

AEX-D-ARSR-A005

AEX-D-ARSR-A006

Project will consist of the Base Bid and up to four (4) options. The listed options may be added to the Base Bid by the government as funding allows. The Options may be added in any combination, including add all, none, or any combination at the governments liking. None of the options will be requested independently of the base bid.

BASE BID: Design/build an exterior metal stairway for emergency egress from the 3rd and 2nd floor.

Including, new alcove, doors and misc metals removal.

OPTION #1: New vertical fixed ladder to the Radome

OPTION #2: New LED lights in the Radome

OPTION #3: Cleaning, Repair, coating and caulking the exterior of the building.

OPTION #4: Install 13 new windows

2. SERVICES TO BE PERFORMED

The contractor shall furnish the personnel, engineering/shop drawings, services, equipment, materials, facilities, and other requirements necessary for, or incidental to, the performance of work set forth herein.

All work by the contractor shall be performed in accordance with the SOW, Occupational Safety and Health Administration (OSHA), the latest edition of the International Building Code, and all state and local codes, whichever one is more stringent.

The Contractor shall field verify all measurements.

The contractor shall identify an on-site team lead to monitor and coordinate the activities of their employees and their own subcontractors as they execute each phase of the project. The contractor shall provide oversight of all members of their team and subcontractors during all phases.

The contractor shall provide Project Acceptance and Closeout Documentation including but not limited to manuals, warranty documentation for all equipment installed under this SOW.

The contractor shall coordinate all on-site activities with the COR.

The contractor shall maintain compliance with Federal, State, and Local Health and Safety regulations, FAA requirements, and all local, state, and federal laws; and provisions for protection of all contractor employees and stakeholders’ property associated with any work that is connected with this project.

If unidentified materials are encountered that are potentially hazardous, stop work immediately, and contact the COR for direction.

The contractor shall provide all transportation resources to move equipment to and from the project site. The contractor shall provide a roll-off container or a truck for transportation of debris from the site for disposal.

The contractor shall provide any tools and equipment required to complete this work, including safety equipment and clean up supplies.

The COR shall identify electrical outlet locations that can be used for electric power for small tools. High amperage electrical service is not available at the site.

No work shall be performed above the catwalk or in the Radome without proper downtime. The Contractor will work with the COR to schedule the downtime with a minimum 72-hour advanced notice for outages less than 8 hours, and 30-day advance notice for outages over 8 hours or for consecutive multiple days at 8 hours or less.

3. SPECIFIC TASKS

Provide all labor, equipment, tools and materials as required to provide and install the Base Bid with any of the four options the government choses, as stated in this Statement of Work and in conjunction with best construction practices.

Before starting work, the contractor shall participate in a Pre-Construction meeting with the CO and COR. At this meeting, or immediately prior to actual project start, the contractor shall participate in an on-site Pre-Construction meeting with the COR. The entire On Site team shall participate in this meeting to review the site conditions, safety conditions and communications, roles and responsibilities, lay-down and work areas and the project sequence of events and schedule.

The contractor shall ensure that the operating electronic equipment on the 2nd floor is protected from dust, debris and damage at all times.

The exterior siding of the metal surfaces of the existing structure has been tested for lead paint. Lead levels are below the threshold for lead based paint.

The contractor shall arrange for disposal of all demolished trash or debris resulting from this work.

Disposal on FAA or County property, including disposal into dumpsters without permission, is not an option and is not to be considered. Clean up the site and remove any remaining excess materials and debris from the project site. Collect all tools and equipment and demobilize.

The contractor shall ensure that all personnel (including any of their subcontractors) working on this project have readily available and utilize the proper PPE.

Where special materials are encountered during the installation (e.g. applied finishes, insulation, fireproofing, etc.) and need to be removed to accommodate the new work, they shall be carefully removed to the minimum extent necessary and disposed of in accordance with all applicable regulations.

Where any special materials, as indicated above, have been removed or altered as a result of the work performed under this SOW, they shall be replaced, as soon as is possible, with materials and techniques matching the original installation.

Base Bid:

Remove the existing “crows nest/antenna platform” suspended from the catwalk and the existing caged ladder to the 3rd floor platform, and other misc metal items. Remove the existing structural steel crow’s nest from the side of the catwalk, remove the structural supports for the crow’s nest. The existing crow’s nest supports also support the catwalk on that side. Therefore, the contractor will need to re-support that area, this should include reusing the existing beams and reworking them, and installing two

(2) new bolted in 8” splices where the beams are now protruding.

Engineer, furnish and install an approximately 39-foot steel exterior egress stairway. Including transition platforms, foundation, new 3rd floor alcove and exterior door; and new 2nd floor exterior door. All components shall be grounded and bonded in accordance with “FAA –STD-09f, Lightning and Surge Protection, Grounding, Bonding and Shielding Requirements for Facilities and electronic Equipment, October 18, 2017.”

The exterior stairs shall be engineered and installed in accordance with OSHA Standard 1917.120 Fixed Stairways. They shall have a minimum stair width of 28 inches. The minimum requirement for the riser is 7 inches and for the run is 10 inches. The handrail height shall be between 30 and 34 inches.

Shoring required for the stability of the uncompleted structure or for installation or modifications of structural members shall be the contractor’s responsibility.

Contractor is to verify all existing conditions, dimensions and elevations prior to start of construction.

All modifications to the facilities structural members, including beams, columns and bracing, shall be noted on the shop drawings.

Design Criteria:

1. Governing Building code is the most recent edition of the Uniform Building Code, by the International Conference of Building Officials.

2. AISC Manual of Steel Construction, LRFD, most recent edition

3. ACI 318-02, Building Code Requirements for Structural Concrete, by the American Concrete Institute.

Loadings:

1. Dead Loads (Self Weight): Self Weight

2. Live Loads: 100 PSF

3. Wind: Basis for Wind Loads: UBC – Most recent edition.

Design Wind Velocity: 90 MPH MWFRS Exposure: C

Structural Steel:

1. Work shall conform to the requirements of the

a. Specification for Structural Steel Buildings – Allowable Stress Design and Plastic Design, Published by AISC, latest edition.

b. AWS D1.1-98, Structural Welding Code – Steel published by AWS.

2. Welding shall be performed by welders qualified under the provisions of the AWS codes.

3. Materials shall conform to the standard listed:

a. Shapes ASTM 992

b. Plates ASTM A36

c. Tubes ASTM A500, Grade B

d. Anchor Bolts ASTM A307

e. Structural Bolts ASTM A325

4. Bolted Connections unless otherwise approved:

a. Structural: ¾” Diameter min, Type X, 2 bolts minimum, snug tight

b. Anchor bolts: ¾” Diameter min, 4 bolts, minimum

5. Welded connections: Welds shall be sized for the connected materials in accordance with AWS.

a. Visually inspect all shop and filed welds in accordance with AWS D1.1. Perform non-destructive radiographic or ultrasonic test on 100 percent of full penetration weld and 10 percent of the partial penetration welds.

6. All fabricated items shall have approved engineering/shop drawing prior to fabrication.

Engineering/Shop drawings shall be original, stamped by a licensed engineer and shall be submitted for approval prior to fabrication. Contractor shall check and approve drawings prior to forwarding submittal to the government.

7. All structural steel and fasteners shall be galvanized. Field touch up all bolts, welds and abraded areas.

8. Do not field cut or alter structural members without engineer’s acceptance.

9. Space headed shear studs evenly unless noted otherwise.

10. Place natural camber of Beams upward.

Concrete, Cast-in-Place:

1. Work shall conform to all requirements of the latest edition of ACI301, Specifications for

Structural Concrete, Published by ACI, except as modified by the requirements of the contract documents.

2. Submit concrete mix designs for each formulation of specified concrete with adequate supporting data to demonstrate compliance with ACI 301 and the project specifications. Mix designs shall be based on trial batch or historical data method. Indicate on each submittal where the mix is to be used. Indicate the required average compressive strength used as Basis for each mix design along with the supporting data if different from above.

3. Concrete Mix Formulation:

a. Concrete Location – footings, Slabs on grade; grade beams

b. Compressive Strength at 28 days – 3000 PSI normal weight

c. Slump Range – 1” to 4”

d. Air Content – None

e. Max Aggregate – 1/2”

4. Concrete Materials shall conform to the standards listed:

a. Portland Cement ASTM C 150, Type I

b. Fly Ash ASTM C 61, Type F

c. Aggregages:

Normal ASTM C 33

d. Air-Entraining Admixture ASTM C 260

e. Water-Reducing Admixture ASTM C 494, Type A

f. Superplasticizer ASTM C 494, Type F

g. Retarding Admixture ASTM C 494, Type D

5. Reinforcing Materials shall conform to:

a. Deformed Reinforcing Bars ASTM A 615, Grade 60

b. Deformed Bar Anchors ASTM A 706

c. Welded Wire Fabric ASTM A 185

d. Polypropylene Fibers ASTM C 1116, Type 111

6. All Splices shall be Class B, tension laps unless designed otherwise

7. Do not weld or tack weld reinforcing steel.

3rd FLOOR EGRESS ALCOVE:

Walls shall be constructed and renovated to ensure a 60-minute fire-rating on the new enclosure.

Framing – The framing material shall meet ASTM - D-245 "Structural grades and related allowable properties for visually graded lumber" standards and shall be Southern Pine or approved equal. Framing system shall be constructed to ensure proper support for the finished wall system in accordance with manufacturer recommendations. Furnish fasteners, including nails, spikes, bolts, nuts, washers, screws or other rough hardware necessary to connect the various components.

Exterior Metal Siding – The exterior surfaces of the alcove shall be finished with a metal exposed fastener U-panel for the walls and a smooth surface for the soffit. Be a standard 26 gauge. Color shall be a standard manufacturer color of grey to best match the existing exterior.

At a minimum shall pass the following testing data:

1. Fire Rating: Class A

2. Uplift Test: UL580 Class 90

3. Class 4 Impact Resistance: UL 2218

4. IAPMO Approval: ER-0270

5. Fire Resistance: UL263

Panels shall be installed in accordance with the manufacturer’s recommendations for a weather-tight insulation.

Interior Drywall- Install and finish gypsum panels to comply with ASTM C840, GA-216, and the gypsum wallboard manufacturer’s recommendations, where standards conflict, the more stringent shall apply.

Do not install imperfect, damaged, or damp panels. Butt panels together for a light contact at edges and ends with not more than 1/16 inch (1.5 mm) of open space between panels. Do not force into place.

Joints shall be staggered. Embed tape and apply separate first, fill, and finish coats of joint compound to tape, fasteners, and trim flanges, and apply skim coat of joint compound over entire surface where wallboard is indicated to receive paint.

Joint Treatment - Provide joint treatment materials complying with ASTM C475 and the recommendations of both the manufacturers of the wallboard products and joint treatment materials for each application indicated.

Painting - Painting over non-lead painted surfaces, a zero VOC latex based paint may be used.

Contractor is responsible to ensure that the paints that are used are compatible to each other, approved for the substrate application, and visually match each other. All painting shall be applied according to manufacturer’s written instructions and recommendations in “MPI Manual” for the substrate that it shall be applied to. Color(s) to be chosen by the COR. All painting shall be done in such a way, that existing Lightning, Bonding and Grounding (LB&G) cables are not painted over. These cables shall retain their original cable housing colors. Contractor shall protect all LB&G and other existing components from being painted.

Seal all penetrations in accordance with best practices.

Flooring – Install a new waterproof vinyl traffic PVC membrane, per manufacturer recommendation and instructions. Remove and repair existing construction and sequence new construction as needed to properly install a watertight area, including all trim and components.

1. Manufacturer – Tufdek; Duradek or approved equal

2. Thickness – 60 mil minimum

3. Color – Grey; from manufacture available colors. COR to approval final color selection

4. Warranty – 10 year manufacturer minimum

Door, Frame and Hardware - Furnish and install new 1-hour fire rated exterior egress door, frame and panic hardware. Paint door and frame. Color selection by COR.

2nd FLOOR EXIT:

Install a new 32” x79” 60 minute fire rated exterior door, frame and panic hardware. Paint door and frame. Opening shall be cut through existing wall. Opening shall be reconfigured to accept new door and frame. This will require the structural reworking of the existing diagonal bracing. Reuse of the existing structural members in the new configuration is acceptable. Welding inside the facility is allowed, fire watch procedures will be in effect. Door shall open to the new exit stairway.

OPTION #1 – FIXED LADDER TO THE RADOME

Remove existing 12-ft fixed access ladder and install a new fixed access ladder to the 4th floor. It shall be engineered, and installed in accordance with 29 CFR 1910.27. Rungs shall have a minimum diameter of ¾”. Ladder shall extend a minimum of 42” above final platform, but low enough to clear the rotating sail. Minimum rung width shall be 16”. Distance between rungs shall not exceed 12”

OPTION #2 – TWO (2) NEW LED LIGHTS IN THE RADOME

Install two new LED floodlights on the 4th floor. Including but not limited to new switch, conduit, wire runs, pole mounts, breakers, etc. The new units shall be high efficiency LED flood lights, E-Conolight, E- FFA26 Series, Wide Distribution, Dark Bronze or approved equal. They shall be wired to a switch on the 4th floor near the ladder entrance. Exact location shall be determined on site.

OPTON #3 - CLEANING, REPAIR, COATING AND CAULKING THE EXTERIOR OF THE BUILDING.

Structure is to be cleaned and/or power-washed from the underside of the catwalk to the foundation

Exterior skin shall be recoated with ZRC Zero VOC Water-Based Galvanized Compound. It shall be cleaned and recoated per manufacturer instructions and recommendations.

Caulk and seal all angle penetrations and openings to ensure a watertight structure.

Weatherproofing

a. Remove old caulk and reseal the vertical joint at the catwalk and Radome – 12 locations.

b. Seal the 12 exterior structural steel angles that penetrate the metal siding, and any other angle penetrations that remains. Seal with Dow Corning 795 Silicone Building Sealant followed by Eternabond RoofSeal/OneStep. This material shall match the color of the building.

c. Seal all, approximately 24 exterior structural steel beams that penetrate the metal siding. Seal with Dow Corning 795 Silicone Building Sealant followed by Eternabond RoofSeal/OneStep. This material shall match the color of the building.

d. Caulk three (3) seam joints around the building. These include the joint under the Radome, at the bolted connection of the catwalk and the connection plate under the catwalk. This may require removing and replacing old caulk. This shall be completed with new Dow Corning 795 Silicone Building Sealant.

e. Ensure that the areas under the windows have adequate weatherproofing.

f. Remove deteriorated foam behind the metal at the foundation. Install new barrier and caulk as needed.

OPTION #4 – REPLACEMENT OF EXISTING WINDOWS.

Replace the 13 – 4’ x 4’ fixed windows. There shall be no more stiles or rails then are currently in the existing windows.

1. Frames should be metal, and compatible with the existing structure.

2. Shall be a minimum dual pane.

3. Shall be ENERGY STAR qualified for commercial building in the South-Central Climate Zone.

4. COMPLETION AND ACCEPTANCE CRITERIA

Prior to final payment the COR will perform a walk-through with the contractor reviewing the performed work against the assigned SOW. Any deficiency in workmanship or material will be noted and provided to the contractor in writing. The contractor shall repair the defects prior to their work being accepted by the COR and their receiving payment.

5. SPECIAL CONSTRUCTION REQUIREMENTS

Hours of operation for this project shall be approved by the COR. For initial pricing purposes, assume an eight hour work day (on-site) and a normal five day work week. Any extended work hours or work days if necessary in order to efficiently complete the required work shall be coordinated in advance with the

COR.

Any required equipment outages shall be scheduled and requested as follows: for any radar outage lasting longer than 8 hours, the request must be submitted to our users at least 30 days in advance of the outage, this also includes several continuous days even if they are less than 8 hours. If a single outage is required for less than 8 hours, the request must be submitted to our users a minimum of 48 hours in advance, 72 hours is preferred. This coordination shall be completed through the COR.

6. SAFETY

The contractor shall be responsible for protecting the lives and health of employees and other persons impacted by this project, preventing damage to property, materials, supplies, and equipment, avoiding work interruptions and complying with OSHA safety and health regulations and other federal, state, local, and any applicable location-specific safety requirements.

The contractor shall maintain, applicable documentation supporting training records and have a written Health and Safety Plan available for workers and/or regulatory review.

The contractor will submit “Hot Work” permits as required for the work to be performed. Contractor shall ensure adequate fire extinguishers are available during “Hot Work”.

The contractor shall follow all applicable federal, state, and local statutes, instructions, manuals, handbooks, regulations, guidance, policy letters, and rules (including all changes and amendments) in effect on the date of issuance of this SOW.

7. SCHEDULE

The contractor shall submit a proposed schedule for review and approval from the COR. The contractor shall mobilize the necessary personnel, services, equipment and materials to meet the approved project schedule.

8. SITE ACCESS AND SECURITY

The contractor shall be required to comply with all FAA security requirements. Unless otherwise approved, all contractor personnel assigned to the on-site work shall be US Citizens. If requested, the contractor shall provide personnel identification information (including name, home address, date of birth, etc.) as may be required by the US Government to arrange for access to the radar sites. If requested, contractor shall arrange for similar personnel identification information to be provided for any sub-subcontractor personnel. All personnel on the site shall wear some form of company identification; this may include badges or a company uniform, i.e. shirt with company logo.

9. ON-SITE COORDINATION AND COOPERATION

The contractor shall coordinate all required work with the COR. The contractor shall comply with schedule direction provided by the COR.

In the event that the contractor is unable to comply with the requirements as specified herein, the contractor shall provide prompt notice immediately to the COR and then in writing via email to the COR, providing the pertinent details, including a recommendation for changes in the planned work or other corrective action.

10. SUBMITTALS

The contractor shall provide submittals for the following prior to Notice to Proceed:

1. Schedule and proposed outages

2. Engineering Shop Drawings of:

a. Exterior egress stairway

b. Interior access ladder

3. All other materials including, but not limited to

a. Wall coverings

b. Floor coverings

c. Paints, coverings and additives

d. Doors, frames and all hardware

e. Windows

f. Any material requested as an “or equal”

PICTURES:

BASE BID -

Exterior:

Crow’s nest, existing platform and ladder to be demolished.

Proposed location of new door

Existing Door

Sides of building to be used for the new stairway.

Window – 13 Typical Option #4

Closer look at Crow’s nest:

Exterior Ladder to be removed:

Location of possible splice, typ.

Location of area to be repaired and waterproofed.

Cut and treat edges to eliminate sharp edges and rusting, typical.

3rd floor interior:

Reconnect security sensor to new door

Existing door to be demolished. Rework frame to eliminate sharp edges, water intrusion and rusting.

Floor and wall area to receive new treatment.

Door, frame and wall to be reworked.

2nd floor interior:

Area to receive new single exterior door:

Example of structural modification for a double door in a similar facility – modify for a single:

OPTION #1 – NEW VERTICAL FIXED LADDER

Existing ladder and hatch opened:

Existing Ladder and Hatch – closed:

Modify hatch to accommodate new ladder width.

OPTION #2 – NEW LED LIGHTS IN RADOME

Existing light that no longer functions.

Remove and install new floodlight on anchored pedestal – 2 typical.

Interior of existing lights.

Existing panelboard to be utilized for new power to the lights

Panelboard schedule:

OPTION #3 – CLEAN, CAULK, REPAIR AND COAT EXTERIOR

Beams and angles to be weatherproofed

3 seams to have old caulk removed and be re-caulked, one under the catwalk

Ensure caulk is working and clean up old insulation

Ensure underside is varmint proof

Check that existing caulk is intact. Clean rusted areas prior to resealing.

Remove damaged insulation and replace with watertight alternate

Ensure windows are watertight, even under the frame

#4 – NEW REPLACEMENT WINDOWS:

All work shall be accomplished from the exterior.

Access to the windows from the interior is limited

Windows -13 typical, 3 sides with 1 single at the top on side 4.