IFB2502801_Attachment_A_-_Abbreviated_Design_Criteria_Package_ADCP.pdf

ABBREVIATED DESIGN CRITERIA PACKAGE (ADCP)

CONFORMED DOCUMENTS FOR CONSTRUCTION

AVCON PROJECT #: 2025.0236.01

For

LEESBURG INTERNATIONAL AIRPORT (LEE ATCT):

AIR TRAFFIC CONTROL TOWER

REHABILITATION

8807 Airport Blvd.

Leesburg, Florida 34788

JUNE 30, 2025

Prepared By:

KMA Design Group, LLC.

P.O. Box 140201

Orlando, Florida 32814

(407) 810-2606

TABLE OF CONTENTS

Title Section Pages

1. General Requirements 1-3

2. Structural Narrative 4-6

3. Architectural /Building Envelope Narrative 7-22

4. Mechanical Narrative 23-27

5. Electrical Narrative 28-31

6. Plumbing Narrative 32-35

7. Supplemental Product Specifications APPENDIX A

GENERAL REQUIREMENTS

Existing Campus Background

Leesburg International Airport is a general aviation facility located 35 miles northwest of Orlando. Although commercial flights are not available, the field offers great opportunities for business and recreational pilots and is a central hub for transportation and commerce in this growing part of Central Florida. With two runways extending up to 6,300 feet, the airport accommodates over 100,000 aircraft takeoffs and landings each year.

Existing Air Traffic Control Tower (ATCT)

The existing Air Traffic Control Tower is a four (4) story facility of approximately 1,600 GSF and is a 20FT-by-20FT precast concrete structure (6-sided) with a cab floor at the top for air traffic control at the airport. floors are poured concrete, exterior walls are painted concrete tilt-wall panels, and the roof is a Butler trapezoidal panel, standing seam metal roof system on tapered insulation. Other features include hurricane storefront double glazing around the cab level, a catwalk with steel guard railing and metal wall panels at the top of the cab.

Definitions

• Certified General Contractor (CGC): A Florida licensed General Contractor who has been certified in accordance with Florida Statutes, Section 489.

• Abbreviated Design Criteria Package (ADCP): The package of performance criteria, existing as-built drawings, and specifications to be used by the CGC to correct and construct the project, and as further defined under Florida Statutes, Section 287.055.

• Guaranteed Maximum Price (GMP): CGC final contract price to perform all work specified in this ADCP.

CGC Requirements

• This project will be bid and awarded based on company qualifications and price. The selected CGC will bear full responsibility for any permitting requirements, construction and meeting all applicable Code requirements, Leesburg International Airport Standards and Guidelines and Design Review Committee (DRC) requirements.

• During the performance of this contract, the CGC shall comply with all federal, state, and local environmental laws, regulations, policies, Leesburg International Airport standards and other standards as required.

• The project shall retain the services of a CGC, licensed in the State of Florida, for the remedial efforts of the renovation. The CGC shall acquire material and products from reputable vendors and comply fully with the manufacturer’s recommendations, training, and installation and application instructions.

• During construction, the CGC shall keep an up-to-date annotated set of as-built drawings on site. At completion of the construction phase, original documents shall be updated/documented to the most current as-built condition and shall be provided to Leesburg International Airport in CD or thumb drive format.

• The CGC shall be responsible for identifying and securing all necessary permits required for the project. The CGC shall pay for all required permit fees applicable to the project.

• CGC shall reference the existing as-built drawings (January 2004) and specifications (August 2003) to be provided by Leesburg International Airport for reference to the original design intent as the ADCP shall indicate all known remedial requirements that were requested by Leesburg International Airport.

Special Conditions

• The CGC shall be advised that the ATCT parking and other site areas will remain vacant and available to the CGC during the duration of the construction period. The CGC shall coordinate with Leesburg International Airport to obtain direct access into the facility as required.

• For anyone accessing the site, the CGC must meet all Leesburg International Airport security requirements and be properly badged or be escorted by a badged individual.

Existing Site Information

• The CGC shall be thoroughly familiar with all existing site conditions prior to construction. Investigate all existing site components and include any modifications, removal, or re-location necessary to accommodate the building façade renovations described herein.

• If necessary, temporary hook up of utilities shall be coordinated at a source location directed by Leesburg International Airport. All temporary hook-ups and tie-ins shall comply with all local codes and requirements and shall be the responsibility of the CGC. All temporary tie-ins to the building water system shall be provided with proper backflow prevention devices.

• Vehicle parking for CGC personnel, subcontractors and other project-related vehicles and equipment is available on site.

• The CGC shall be responsible for any security measures, including fencing, required to secure their materials and protect members of the public from access to hazards during construction.

• CGC shall fence the area out of the Air Operations Area (AOA) and meet the Homeland Security requirements for fencing.

• In the event the CGC encounters on-site material believed to be hazardous material, such as asbestos or polychlorinated biphenyl (PCB), the CGC shall immediately stop work in the area affected and verbally report the condition to Leesburg International Airport followed by notification in writing. The work in the affected area shall not thereafter be resumed except by written agreement between Leesburg International Airport and the CGC if in fact the material is hazardous and has not been rendered harmless. The work in the affected area shall be resumed if the material is not hazardous, or if it has been rendered harmless, by the written agreement of Leesburg International Airport and the CGC.

• The CGC shall follow the Airport requirements as indicated below regarding site-related procedures:

o Interior – Cover and prep when working around any and all equipment. The CGC shall not disrupt services, operations, or utilities without obtaining the Airport’s approval and instruction in each case.

o Exterior – The CGC shall always keep the premises free of accumulation of waste materials or rubbish caused by his operations or the operations of any other subcontractors within the area of work.

Methods for such removal must be agreeable to the Airport.

• The CGC shall comply with all the rules and regulations of the building as to hours of availability of elevators, loading areas, etc., for the purpose of delivery and the manner of handling materials, equipment, and debris, to avoid conflict or interference with normal building operations. After-hours work shall be coordinated with the Airport Director.

Existing Utilities

The CGC shall provide any utility service modifications necessary to accomplish the work. The names and points of contact for the utilities at the Airport consisting of FAA, Leesburg International Airport and local utility companies shall be provided and shared between all stakeholders.

Validity of Information Provided

The CGC will, at their own expense, verify and accept as their own, all information provided by Leesburg International Airport. In addition, the CGC shall provide any additional items that may be further required and need remedial efforts, etc., that are necessary to supplement the available information to provide a complete, professionally constructed project consistent with the intent of the ADCP.

Project Information

• Project Location: The site for the project is located at 32650 Echo Drive, Leesburg, Florida 34788; Leesburg International Airport (LEE ATCT); building sited in between US HWY 441 and the Two (2) main runways; just southeast of the Airport Administration Building.

• Project Description: This project consists of providing remedial and corrective design intent for the ATCT through this ADCP (written narratives and supplemental specifications) for a CGC to build; all while referencing the original as-built drawings and specifications as no other construction documents are to be provided.

• There is no Leadership in Energy and Environmental Design (LEED) or Green Globe requirements, however, this project shall apply sustainability principles throughout the construction process.

• It is the intent of these project requirements that the CGC deliver to Leesburg International Airport a complete, finished, and restored facility.

• Materials shall be durable, permanent, vandal-resistant, easily maintained, and within the limits set by budget, function, and code.

• The local permitting agency with authority over this project is the City of Leesburg Building Department, 501 West Meadow Street, Leesburg, FL 34748.

Warranties

General: The required final constructed product shall be a completely warranted and guaranteed project both in terms of materials provided and the installation, labor, equipment, tools, and methods used.

Products and Substitutions

A product proposed as an “equal” shall be such that all its salient characteristics conform to those of the initially proposed brand name product. These salient characteristics may include, but are not limited to:

design, function, size, quality, durability, color, style, texture, and other attributes which, given the nature of the project, may significantly affect its acceptability as a substitute for the listed product.

Certifications

Upon completion of the work, the CGC and their subcontractors shall certify the installation according to their recommendations and instructions and issue warranties and guarantees as a condition of project close-out and final payment.

STRUCTURAL

General Requirements

The air control tower structure was constructed with precast concrete wall panels. The floor beams and floor slabs were constructed with reinforced concrete. The stairs were precast reinforced concrete. Interior and exterior guardrails and ladders were fabricated of steel.

Existing Conditions

Scope of work items are listed in RED.

Photo #1: View of the north elevation of the tower and access ladder. At the third bracket above the ground on the right side the bolt was missing. Install a minimum ½” diameter A36 all-thread in a minimum embedment of 4” in epoxy. Clean hole according to manufacturer’s specifications.

Photo #2: At the third bracket above the ground on the left side the bolt was missing. Install a minimum ½” diameter A36 all-thread in a minimum embedment of 4” in epoxy. Clean hole according to manufacturer’s specifications.

Photo #3: At top of the ladder, the top-right bracket was missing the nut. Install matching washer and nut.

Photo #4: On the west side of the concrete catwalk there were approximately eight (8) locations with shallow spalling on the surface of the concrete slab. There was exposed and corroded welded wire reinforcement (WWR). Remove any loose or debonded concrete, and grind/chip concrete as necessary to expose reinforcement. Remove corrosion from reinforcement via wire brush or other method.

Repair with concrete patching compound specifically formulated for horizontal repairs for the exposed depth of the repair (example manufacturer: Sika).

Photo #5: Typical close-up view of the catwalk slab. General surface deterioration and hairline “spider web” cracks, i.e., crazing. Apply Ply-Dek, Con-Dek system for catwalk slab above and below for full coverage.

ARCHITECTURAL / BUILDING ENVELOPE

General Requirements

The project shall be constructed in accordance with the current editions of all applicable state and local codes, standards, design parameters or regulations. In the event of conflict between codes, standards, or regulations, the most stringent requirement shall apply.

• 2023 Florida Building Code, 8th Edition

• 2023 Florida Building Code – Mechanical, 8th Edition

• 2020 National Electrical Code (NEC)

• 2023 Florida Fire Prevention Code

• 2021 Life Safety Code (NFPA 101) Florida

• UL, Inc. Fire Resistance Directory – Latest Edition

• Florida Department of Transportation (FDOT) Standards

• Federal. Aviation Administration (FAA)

Existing Conditions

Scope of work items are listed in RED.

ROOF

The existing roof system on the Control Tower is a trapezoidal metal roof system manufactured by Butler. This 1/12” sloped roof system was installed over the original built-up roof membrane system.

The parapet walls are metal framed structures covered with metal wall panels, front and back. Parapet tops are covered with coping metal, cleated in the front, and mechanically attached rear face.

There are two air conditioner units mounted on the roof. Both seem to be flashed well and properly sealed. There is one access hatch to the cab roof area. The hatch is well flashed and sealed; however, the ladder mechanism on the interior is broken and does not work.

The roof area drains to the north and south sides to internal gutters. The gutters and flashings have been sealed with a liquid sealant and drainage is sufficient.

• The contractor shall replace missing stainless-steel rivets at the corners of the existing metal coping.

CATWALK

The catwalk area appears to be sealed; however, the sealants are aging and should be removed, cleaned, and resealed.

The steel handrail needs cleaning and painting.

The metal wall panels at this level appear in good condition and well lapped. Metal panels should be painted.

Exterior Upper catwalk: Handrails and steel entry steps.

• Clean old paint off existing handrails using a wire brush and treat corrosion with a rust solvent.

• Prime and paint the existing handrails using POR-15 Step Stop rust protection system.

• All catwalk railings and access door to the cab shall receive a dark gray color as identified within the “Exterior Paint Color” section below. Contractor to paint interior, exterior and all jambs of the door.

EXTERIOR CONCRETE WALLS

The exterior structure is a 4-story, cast panel system. The concrete panels have been sealed with a urethane sealant that is beginning to age and craze. The concrete panels have been painted, and the paint is aging and in need of re-painting.

Exterior Concrete precast panels

• Cut out the old control joint sealant and backer rod. Install new backer rod and seal with DOWSIL 790 Sealant.

• Pressure wash, prep, and paint the existing exterior precast concrete walls with DOWSIL ALLGUARD Silicone Elastomeric Coating.

• All exterior walls shall receive a dark gray color as identified within the “Exterior Paint Color” section below.

• The sealant and caulking around all three existing exterior hollow metal doors on the first level shall be removed and replaced with DOWSIL 795 Sealant. The contractor shall remove all signage and lettering off doors prior to priming and painting over. All exterior hollow metal doors shall receive a dark gray color as identified within the “Exterior Paint Color” section below. Contractor to paint interior, exterior and all jambs of each door.

CAGED EXTERIOR LADDER SYSTEM

The system is mechanically attached to the concrete panels. The sealant at the attachment points is cracking and crazing.

• The existing sealants should be removed, cleaned, and replaced. Use DOWSIL 795 Sealant.

• The caged exterior ladder shall receive a dark gray color as identified within the “Exterior Paint Color” section below.

FIXED FRAME WINDOWS IN THE EXTERIOR CONCRETE WALL PANELS

There are six (6) aluminum fixed framed windows in the Tilt-Wall panels. These windows appear to be functioning. The urethane sealant around the windows is beginning to crack and craze and in need of replacement.

• Cut out the old existing sealant and install with DOWSIL 795 Sealant.

UPPER TOWER (EXTERIOR BLUE METAL WALL PANELS)

• Replace all exposed fasteners with new screws that are corrosion resistant. Use screws that have the weather tight washers included. Use screws one size larger than the existing fasteners.

• Pressure wash, prep and paint all the existing exterior blue metal panels with alternating colors for each side (6-sides) meaning three sides shall receive white and three sides shall receive orange.

• The metal corners in between the cab windows shall receive a dark gray color as identified within the “Exterior Paint Color” section below.

EXTERIOR PAINT COLORS

All colors shall be Sherwin Williams (Pro Industrial DTM Acrylic Coating). The colors shall be the following Basis of design:

Orange: SW 6886 Invigorate White: SW 7000 Ibis White Dark Gray: SW 7068 Grizzle Gray

*The contractor shall provide three (3) varying shades (tone on tone) of each color as listed above for “drawdowns” on the building for the airport director to see in full sunlight prior to making the final approved selection.

INTERIOR REMEDIATION

• Replace ACT/grid on the third-floor office area (white) and well as the ACT/grid in the tower cab area (black).

• The contractor shall replace the pull-down access ladder from the cab to the roof (B.O.D.: Louisville Ladder).

• Contractor shall fix the existing wood railings where they are loose. Remove the wall bracket and reinstall it to secure.

• Remove both ADA handrails that are rusted and replace them one for one.

• Contractor shall add a 12” x 12” aluminum louver to the existing restroom door (B.O.D.: Titus CT-700) to help prevent future moisture concerns.

• Contractor to patch up Two (2) openings within the wall for two separate locations on the second floor (I.T.

Room). Secure two layers of Type X gypsum board (cut to fit), mud/tape as needed and paint to match to maintain the proper wall rating.

ROOF

Photo #6: Existing Butler trapezoidal panel, standing seam metal roof system.

Photo #7: Replace missing stainless-steel rivets at the corners of the existing metal coping.

Photo #8: Metal roof panels drain to internal gutter at north and south perimeters. Recently liquid sealed.

Photo #9: Internal roof drains with downspout and recently sealed electrical penetrations.

Flashings appear to be functioning as designed.

Photo #10: Metal diverter skirts installed to direct water around the A/C unit.

Photo #11: Metal cap flashing installed over the roof ridge.

Photo #12: Liquid sealed parapet flashings.

Photo #13: Hatch curb has been liquid sealed.

CATWALK

Photo #14: Clean and paint stucco and seal water fixture (hose bibb).

Photo #15: Upper catwalk steel guardrails and posts for the access ladder. Wire brush off corrosion and paint.

Corrosion was generally minor and appeared surficial with no section loss.

Photo #16: Upper catwalk steel guardrails and posts. Wire brush off corrosion and paint.

Corrosion was generally minor and appeared surficial with no section loss.

EXTERIOR CONCRETE WALLS

Photo #17: Concrete Tilt-Wall Panels, panel joints beginning to fail. Remove and replace sealant.

Photo #18: Concrete Tilt-Wall Panels. Clean and replace sealant around concrete panel.

Photo #19: Concrete Tilt-Wall Panels. Clean, prime and paint all three of the exterior hollow metal doors.

Also, replace all interior and exterior caulking around the door frame.

Photo #20: Concrete Tilt-Wall Panels, panel joints beginning to fail. Remove and replace sealant.

CAGED EXTERIOR LADDER SYSTEM

Photo #21: The sealant at the attachment points is cracking and crazing. The sealant should be removed, cleaned, and replaced.

FIXED FRAME WINDOWS IN THE EXTERIOR CONCRETE WALL PANELS

Photo #22: The sealant at the attachment points is cracking and crazing. Cut out the old existing sealant and install DOWSIL 795 Sealant.

UPPER TOWER (EXTERIOR BLUE METAL WALL PANELS)

Photo #23: Double pane, thermal windows, sealed well.

Photo #24: Exterior metal wall panels, catwalk level. Prep, prime, and paint all 6-sides as referenced.

The upper catwalk access door and hardware are in good condition. The access door requires painting.

Photo #25: Exterior metal wall panels, catwalk level. Prep, prime, and paint all 6-sides as referenced.

INTERIOR REMEDIATION

Photo #26: Evidence of old roof leaks. All existing ACT shall be removed and replaced with new ACT.

Photo #27: Existing access ladder is broken. Contractor shall replace one for one and install per Manufacturer’s recommendations (B.O.D.: Louisville Ladder 7’-8” x 22.5” x 3” Insulated or similar to fit).

Photo #28: Contractor to fix portions of the existing wood railing. Readjust wall brackets to properly secure.

Photo #29: Contractor to remove existing ADA grab bars and replace one for one. Ensure proper backing.

Photo #30: Location #1 - fill in the Two (2) wall openings with Type X gypsum board within the I.T. Room.

Photo #31: Location #2 - fill in the Two (2) wall openings with Type X gypsum board within the I.T. Room.

Outline Specifications

Below are the following technical sections anticipated to be included in the scope of work for the project:

DIVISION 07: THERMAL & MOISTURE

07 01 91 - Joint Sealant Rehabilitation and Replacement

1. Cut back all cracked/shrunken window gaskets.

2. Clean all joints, removing all foreign matters and contaminants such as grease, oil, dust, water, frost, surface dirt, old sealants or glazing compounds and protective coatings.

3. Install backing rod or joint filler, setting blocks, spacer shims and tapes (if needed). Mask areas adjacent to joints to ensure neat sealant lines. Primer is generally not required on nonporous surfaces but may be necessary for optimal sealing of certain porous surfaces. A test placement is always recommended. Apply both DOWSIL™ 790 and DOWSIL™ 795 Silicone Building Sealant in a continuous operation using positive pressure as per the specified application referenced. (The sealant can be applied using many types of air-operated guns and most types of bulk dispensing equipment.) Before a skin forms (typically within 15 minutes), tool the sealant with light pressure to spread the sealant against the backing material and joint surfaces. Remove the masking tape as soon as the bead is tooled.

4. Mandatory adhesion tests are to be performed during the first week of the project (3 tests performed by the manufacturers technical representative).

5. Provide a 20-year manufacturer warranty.

6. Provide Contractors’ 5-year leak free warranty.

7. Refer to APPENDIX A for both.

07 18 13 – Pedestrian Traffic Coating (Basis of Design: Ply-Dek, Con-Dek Over Concrete) Refer to APPENDIX A

DIVISION 9: FINISHES

09 50 00 – Acoustical Ceiling Tile (2’x2’ black, 15/16” tegular edge)

09 80 00 – Elastomeric Coatings for DOWSIL ALLGUARD Silicone Elastomeric Coating

MECHANICAL SYSTEMS

Applicable Design Codes & Standards A complete mechanical design will be provided for this project in accordance with the standards in the latest editions of the following listed applicable codes, ordinances, laws, and regulations.

Among them are the latest adopted editions of:

• 2023 Florida Mechanical Code.

• 2023 Florida Energy Efficiency Code.

• Florida Fire Prevention Code.

• American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE) Standards

• NFPA 90A, Installation of Air Conditioning and Ventilating Systems

• National Fire Code (NFC)

• SMACNA Standards

• Leesburg Airport Standards and Guidelines.

HVAC

Below are the existing HVAC systems and recommendations. Scope of work items are listed in RED. A schematic is also provided visually indicating the anticipated scope (See Schematic “A”).

• The existing five (5) story air traffic control tower at the Leesburg International Airport is currently served by a combination of rooftop units and packaged terminal air conditioning units (PTACs).

o The first floor contains storage, elevator equipment and a janitorial closet. This floor is exhausted only and not air conditioned.

o The second through fourth floor contains offices, restrooms, and equipment areas. Each floor is served by a one (1) 12,000btu/h (1 ton) PTAC’s. These units each contain a 3.4KW heater and are 208V/1ph units.

▪ One PTAC unit (2nd FL) was replaced in 2019. This unit is to be removed and salvaged, per the Airport Director’s direction) and will require replacement so that all three PTAC units being installed are the same age.

▪ The 3rd and 4th floor PTAC units are original to the building (2005/2006) and will need replacement.

o The Cab level is served by two (2) Trane 36,000 btu/h (3 ton) nominal capacity packed roof top units (RTUs) mounted on the cab roof. Each unit is straight cool with electric heat and are 208V/3ph units.

▪ One unit is circa 2006, and past their ASHARE expected service life of 12-15 years. This shall be replaced, one for one, and connected to the existing duct system.

▪ The other unit is new and appears in good working condition, showing a manufactured date of 2022.

▪ The Cab acoustic ceiling tile and air terminal devices mounted within (diffuser and return grilles) shall be replaced one for one. Contractor shall connect new lay-in ceiling devices into existing ductwork, matching existing style and size.

• The contractor shall verify on site that if an existing controls system serves the building, the new units are tied into the existing campus building automation/controls system to allow for associated monitoring and alarm.

Schematic “A” - As-Built Plan Notes for Renovation Scope of Work:

Photo #32: 2006 CAB A/C unit to be a one for one replacement and connect to existing ductwork.

Photo #33: 2022 CAB A/C unit in good condition and shall remain.

Photo #34: The Cab acoustic ceiling tile and air terminal devices mounted within (diffuser and return grilles) shall be replaced one for one.

Photo #35: The 3rd floor PTAC unit is original to the building (2005/2006) and needs replacement.

Photo #36: The 4th floor PTAC unit is original to the building (2005/2006) and needs replacement.

ELECTRICAL SYSTEMS

A complete electrical design will be provided for this project in accordance with the standards in the latest editions of

• American with Disabilities Act (ADA)

• American National Standards Institute (ANSI)

• 20203Florida Building Code

• National Electrical Safety Code (IEEE-C2)

• National Electrical Manufacturers Association (NEMA)

• National Electrical Code 2020 (NFPA 70)

• National Fire Alarm Code (NFPA 72)

• Florida Fire Prevention Code NFPA 1

• NFPA 101 Life Safety Code

• Standard for Emergency and Standby Power Systems

(NFPA 110)

• Standard for the Installation of Lightning Protection Systems

(NFPA 780)

• The Occupational Safety and Health Act (OSHA)

• Underwriters’ Laboratories, Inc. (UL)

The electrical scope of work for this project is depicted below. Scope specific items are listed in RED. A schematic is also provided visually indicating the anticipated scope (See Schematic “A”).

Electrical Service and Power Distribution System Existing power

• The existing air traffic control tower is served by a 400amp, 208V/120V, 3Ø, 4-wire service. This service is backed up by a 125KVA emergency generator and automatic transfer switch. The main switchgear serving the building includes a main 200amp panel (‘Panel A’) and an additional 100amp ‘Panel B’. There is also a dedicated elevator panel (‘Panel E’).

• The contractor shall coordinate with the owner to ensure the generator is in good working condition.

• All existing power switchgear, devices, conduit, and conductors (aside from red/critical power quad-receptacles at the cab level) appear in good condition and shall remain as is.

• There are four (4) quad critical power receptacles that were originally served from a UPS system. This system does not appear to be in working condition. The contractor shall trace the circuits associated with these critical power receptacles in the cab, and either remove or provide a new UPS, as required to ensure they are properly working as originally intended, according to the owner’s request.

• The electrical contractor shall coordinate with the mechanical contractor the replacement of two (2) packaged terminal units and one (1) packaged RTU. The units are being replaced with similar units, and as such, existing circuitry may be reused. Though, the contractor shall verify existing breaker and conductor sizes are adequate for the new units and modify as required.

• The electrical contractor shall coordinate with the plumbing contractor on the replacement of the one (1) existing electric water heater (EWH). The EWH is being replaced one for one, and as such, existing circuitry may be reused. Though, the contractor shall verify existing breaker and conductor sizes are adequate for the new units and modify as required.

Lighting

• It appears that all the lighting serving the building was replaced with new LED fixtures in 2022.

• The contractor shall evaluate all lighting and ensure each fixture is clean and functions properly. All properly functioning fixtures (assumed to be all of them based on the site visit performed) shall remain.

• Any fixture found not to be LED shall be replaced, one for one, with the LED equivalent.

• At the cab level, the contractor shall clean and remount existing down lights into new ceiling.

Raceways and Conductors If required to replace damaged or undersized conduit/conductor, any new conduits and conductors will be as follows:

• Service entrance conductors – Schedule 40 PVC buried 36” below grade.

• Panelboard feeders – Electrical Metallic Tubing were run concealed and above grade. Rigid galvanized steel was run exposed and above grade.

• All conductors #1 and smaller will be copper. Conductors larger than #1 may be aluminum where required.

• Modular wiring systems will not be allowed.

• MC cable may be allowed only as approved by the owner.

Lightning Protection

• An existing lightning protection system is provided for the building. The contractor shall evaluate the air terminal system for compliance. If any devices are found defective, the contractor shall repair and/or replace any arrestors or wiring to recertify the lighting protection systems. A rooftop UL Master Label lightning protection system will be required to cover all building areas. All new air terminals, bonds to rooftop equipment and other metallic items, down conductors, buried counterpoise conductors and ground rods, all as per NFPA 780 and UL 96A. The system will be modified only by an LPI approved installation contractor.

• Any new roof penetrations required shall be made with thru roof assemblies equal to Harger 230 series pre-manufactured base plate/cable connector, threaded riser bar, 2 3/8” OD PVC tubing support, and cap/cable connector. Any new connections will be made with exothermic welding below grade and compression connectors above grade. Roof conductors shall be NFPA Class 1 stranded aluminum. Down conductors shall be NFPA Class 1 stranded copper with bi-metallic transitions to the aluminum roof top conductors. All down conductors shall be concealed from public view. Air terminals will be 1/2” diameter Class 1 aluminum.

Appropriate bases for the mounting surface will be utilized and coordinated with the roofing manufacturer.

Schematic “A” - As-Built Plan Notes for Renovation Scope off Work:

Photo #37: Existing switchgear wall mounted to ATCT exterior wall in good condition to remain.

Photo #38: Existing LED wall mounted lighting recently replaced and in good condition to remain.

Photo #39: The contractor shall trace the circuits associated with these critical power receptacles in the cab, and either remove or provide a new UPS, as required to ensure they are properly working as originally intended, per owner’s request.

Photo #40: The contractor shall clean and remount existing down lights into new ceiling.

PLUMBING SYSTEMS

A complete plumbing design will be provided for this project in accordance with the standards in the latest editions of

• 2023 Florida Plumbing Code.

• 2023 Florida Energy Efficiency Code.

• Florida Fire Prevention Code.

• American Society of Heating, Refrigeration, and Air Conditioning Engineers (ASHRAE) Standards

• American Society of Plumbing Engineers (ASPE)

• NFPA 90A, Installation of Air Conditioning and Ventilating Systems

• National Fire Code (NFC)

• Leesburg Airport Standards and Guidelines.

Plumbing Below are the existing plumbing systems and recommendations. Scope of work items are listed in RED. A schematic is also provided visually indicating the anticipated scope (See Schematic “A”).

• The existing building houses a 1st floor janitorial closet with a mop sink. Above the mop sink is a small 10 gallon 1.65KW electric tank type water heater (EWC) is mounted on a shelf. The EWC is circa 2006.

o The mop sink shall remain as is.

o The EWH shall be replaced, one for one.

• The 4th floor houses a single restroom and separate small hand washing sink.

o The hand washing sink shall remain as is.

o The 4th floor restroom water closet shall be removed in its entirety and replaced (B.O.D.: Cadet Two-piece pressure assist 1.6gpf/6.0lpf chair height elongated Everclean toilet).

o The 4th floor restroom lavatory is in good condition. However, the sink is falling off the wall and needs to be removed, insert proper wall back and reinstalled/sealed to the existing wall.

o It was recommended to remove the existing water supply line/valve and replace it with new water supply line/valve due to heavy corrosion.

Schematic “A” - As-Built Plan Notes for Renovation Scope off Work:

Photo #41: The existing mop sink is in good condition and shall remain.

Photo #42: The existing hand sink is in good condition and shall remain.

Photo #43: The existing ADA lavatory is in good condition and should be removed, rehung and resealed.

Photo #44: The existing ADA toilet is in poor condition and should be replaced.

Photo #45: The existing electric water heater is past its age and should be replaced one for one.

APPENDIX A

Technical Data Sheet

DOWSIL™ 790 Silicone Building Sealant

®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow

Page 1 of 4 © 2019–2020 The Dow Chemical Company. All rights reserved. Form No. 62-2147-01-0220 S2D

Ultra-low-modulus sealant for sensitive natural stone, porous stone, masonry and concrete façades

Features & Benefits

• Low-staining and plasticizer free, suitable for porous substrates

• Excellent performance even in building joints that experience extreme movement

• Extension/compression capability of +100/-50 percent

• Conforms to ISO 11600F-25LM

• Excellent weathering properties and resistance to sunlight, rain, snow, and temperature extremes

• Excellent unprimed adhesion to masonry, concrete and natural stone substrates

• Easy application over a wide temperature range

Composition

• One-part, neutral-cure silicone sealant

Applications

• Sealing of joints between natural stone

• Sealing of curtainwall joints and mullion joints

• Sealing of expansion and control joints

• Sealing of precast concrete panel joints and many other construction joints

Typical Properties Specification Writers: These values are not intended for use in preparing specifications.

Test Property Unit Result

As Supplied

CTM1 98 Skin-over Time (23°C, 50% R.H.) min 9

CTM 95 Tack-Free Time (23°C, 50% R.H.) min 31

CTM 663 Cure Rate (23°C, 50% R.H.)

1 Day 3 Days mm mm

2.8 5.8

As Cured – After 28 Days at 23°C and 50% RH

CTM 99 Durometer Hardness, Shore A 11

ISO2 8339 Modulus 100% MPa 0.08

ISO 8339 Elongation at Break % 840

1. CTMs: Corporate Test Methods. Copies of CTMs are available upon request.

2. ISO: International Standardization Organization

Page 2 of 4 © 2019–2020 The Dow Chemical Company. All rights reserved. Form No. 62-2147-01-0220 S2D

Typical Properties (Cont.)

ISO 7389 Elastic Recovery % 78

ASTM3 C 719 Joint Movement Capabilities According to ASTM Standard Extension/Compression

% +100/-50

ISO 9047 Joint Movement Capability According to ISO Standard % ±25 (highest category)

ASTM C 1248 Staining, Various Substrates None

3. ASTM: American Society for Testing and Materials.

Description Ultra-low-modulus sealant for masonry, concrete and natural stone façades. DOWSIL™ 790

Silicone Building Sealant provides excellent performance, even in building joints that experience extreme movement. It places a low stress on the sealant/substrate bond line to minimize failures in moving joints.

DOWSIL™ 790 Silicone Building Sealant is available in black and gray.

Approvals/ Specifications

This sealant meets or exceeds the requirements of:

• ISO 11600F 25LM

• EN15651 – CE MARK

• ASTM Specification C 920, Type S, Grade NS, Class 100/50, Use T, NT, M, G, A, and

O

How to Use Surface Preparation Ensure that surfaces to be sealed are clean, dry, sound and grease-free. Porous substrates such as concrete, brickwork, mortar, etc. must be mechanically cleaned of loose particles using a steel brush, sanding disc or any similar means. Clean non-porous surface with DOWSIL™ R-40 Universal Cleaner, dry thoroughly with a clean, lint-free cloth and wait for at least half an hour before application of sealant.

Note: When using any solvent, always provide adequate ventilation. Avoid heat, sparks and open flames. Use solvent resistant gloves. Observe and follow all precautions listed on solvent container label.

Masking Areas adjacent to the joints should be masked with tape to prevent contamination of the substrates and to ensure a neat sealant line. Masking tape should be removed immediately after tooling.

Priming Primers are not usually required on stone, concrete and masonry substrates. On non-porous substrates such as anodized aluminum, priming might be needed. It is recommended to carry out test on such substrates to assess the need for priming. A suitable primer on non-porous substrates is DOWSIL™ 1200 OS Primer. Allow at least half an hour between priming and sealant application. Please contact Dow’s technical service in case of doubt.

Page 3 of 4 © 2019–2020 The Dow Chemical Company. All rights reserved. Form No. 62-2147-01-0220 S2D

How to Use (Cont.) Back-up Materials Where back-up material is required, open cell backer rod is recommended. Back-up materials provide back pressure and avoid three sided adhesion that limits sealant movement capability.

Finishing The joint should be tooled within 5 minutes of application to ensure good contact between the sealant and the substrate. Tooling of the sealant also gives a smooth, professional finish.

Clean-Up If sealant is misapplied to porous substrates, it should be left until it is just cured and then removed by peeling, cutting or other mechanical means. Care should be taken not to damage plastic or coated surfaces.

Joint Design The sealant joint width should be designed to accommodate the movement capability of the sealant. When designing joints using DOWSIL™ 790 Silicone Building Sealant, the minimum width should be 6 mm. For joints between 6–12 mm wide, a seal depth of 6 mm is required. For joints above 12 mm wide, a width to depth ratio of 2:1 should be used. As the sealant joint width becomes larger than 25 mm, the depth should be held at approximately 9 mm to 12 mm. In situations where fillet joints are needed, a minimum of 6 mm sealant bite to each substrate is recommended. For joint dimensions with a width greater than 25 mm or a depth greater than 15 mm, please contact your regional service centers for technical assistance.

Handling Precautions

PRODUCT SAFETY INFORMATION REQUIRED FOR SAFE USE IS NOT INCLUDED IN

THIS DOCUMENT. BEFORE HANDLING, READ PRODUCT AND SAFETY DATA SHEETS

AND CONTAINER LABELS FOR SAFE USE, PHYSICAL AND HEALTH HAZARD

INFORMATION. THE SAFETY DATA SHEET IS AVAILABLE ON THE DOW WEBSITE AT

DOW.COM, OR FROM YOUR DOW SALES APPLICATION ENGINEER, OR

DISTRIBUTOR, OR BY CALLING DOW CUSTOMER SERVICE.

Usable Life and Storage

When stored at or below 32°C, DOWSIL™ 790 Silicone Building Sealant has a shelf life of 12 months from date of manufacture. Refer to product packaging for “Use By” date.

Limitations DOWSIL™ 790 Silicone Building Sealant should not be applied:

• In structural applications.

• Below grade or to materials that outgas, which can cause bubbling in curing sealant.

• On brass or copper or other similar material that can be corroded.

• To surfaces that are continuously immersed in water.

• For use as an interior penetration firestop sealing system.

• To building materials that bleed oils, plasticizers, or solvents – materials such as impregnated wood, oil based caulks, green or partially vulcanized rubber gaskets, or tapes or bituminous below-grade waterproofing and asphalt-impregnated fiberboard.

• In totally confined spaces because the sealant requires atmospheric moisture for cure.

• To surfaces that will be painted after application. The paint film will not stretch with the extension of the sealant and may crack and peel and most likely will not adhere to the sealant.

• To surfaces in direct or indirect contact with food.

Page 4 of 4 ®Trademark of The Dow Chemical Company Form No. 62-2147-01-0220 S2D

Limitations (Cont.) • To wet or frost-laden surfaces.

• In applications where solvents or primers are not fully dried prior to sealant application.

Uncured sealant is very sensitive to many solvents, primers, and cleaning agents; these may cause the sealant to remain uncured or tacky.

This product is neither tested nor represented as suitable for medical or pharmaceutical uses.

Health and Environmental Information

To support customers in their product safety needs, Dow has an extensive Product Stewardship organization and a team of product safety and regulatory compliance specialists available in each area.

For further information, please see our website, dow.com or consult your local Dow representative.

Disposal Considerations

Dispose in accordance with all local, state (provincial) and federal regulations. Empty containers may contain hazardous residues. This material and its container must be disposed in a safe and legal manner.

It is the user’s responsibility to verify that treatment and disposal procedures comply with local, state (provincial) and federal regulations. Contact your Dow Technical Representative for more information.

Product Stewardship

Dow has a fundamental concern for all who make, distribute, and use its products, and for the environment in which we live. This concern is the basis for our product stewardship philosophy by which we assess the safety, health, and environmental information on our products and then take appropriate steps to protect employee and public health and our environment. The success of our product stewardship program rests with each and every individual involved with Dow products - from the initial concept and research, to manufacture, use, sale, disposal, and recycle of each product.

Customer Notice

Dow strongly encourages its customers to review both their manufacturing processes and their applications of Dow products from the standpoint of human health and environmental quality to ensure that Dow products are not used in ways for which they are not intended or tested. Dow personnel are available to answer your questions and to provide reasonable technical support. Dow product literature, including safety data sheets, should be consulted prior to use of Dow products. Current safety data sheets are available from Dow.

dow.com NOTICE: No freedom from infringement of any patent owned by Dow or others is to be inferred. Because use conditions and applicable laws may differ from one location to another and may change with time, Customer is responsible for determining whether products and the information in this document are appropriate for Customer's use and for ensuring that Customer's workplace and disposal practices are in compliance with applicable laws and other government enactments. The product shown in this literature may not be available for sale and/or available in all geographies where Dow is represented. The claims made may not have been approved for use in all countries. Dow assumes no obligation or liability for the information in this document.

References to "Dow" or the "Company" mean the Dow legal entity selling the products to Customer unless otherwise expressly noted. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A

PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED.

Technical Data Sheet

DOWSIL™ 795 Silicone Building Sealant

Page 1 of 4 © 2017–2025 The Dow Chemical Company. All rights reserved. Form No. 61-885-01-0325 S2D

Description

Neutral, one part silicone sealant

Sustainability Attribute:

Uses / Applications

Structural and nonstructural glazing Structural attachment of many panel systems Panel stiffener applications Weather sealing of most common construction materials including glass, aluminum, steel, painted metal, EIFS, granite and other stone, concrete, brick and plastics

Composition

One–part, neutral cure, RTV silicone sealant

Benefits

Suitable for most new construction and remedial sealing applications Versatile – high performance structural glazing and weather sealing from a single product Available in 15 standard colors; custom colors also available Excellent weatherability virtually unaffected by sunlight, rain, snow, ozone and temperature extremes of -40°F (-40°C) to 300°F (149°C) Excellent unprimed adhesion to a wide variety of construction materials and building components, including anodized, alodined, most coated and many Kynar painted aluminums

Ease of application – ready to use as supplied Ease of use – all temperature gunnability, easy tooling and low-odor cure byproduct Meets global standards (Americas, Asia and Europe)

Typical Properties Specification Writers: These values are not intended for use in preparing specifications.

Test1 Property Unit Result

As Supplied

ASTM C 679 Tack Free Time, 50% RH hours 3

Curing Time at 25°C (77°F) and 50% RH days 7–14

Full Adhesion days 14–21

ASTM C 639 Flow, Sag or Slump inches (mm) 0.1 (2.54)

Working Time minutes 20–30

1. ASTM: American Society for Testing and Materials.

Page 2 of 4 © 2017–2025 The Dow Chemical Company. All rights reserved. Form No. 61-885-01-0325 S2D

Typical Properties (Cont.)

VOC Content2 g/L 30

As Cured After 21 Days at 25°C (77°F) and 50% RH

ASTM D 2240 Durometer Hardness, Shore A points 35

ASTM C 794 Peel Strength lb/in (kg/cm) 32 (5.7)

ASTM C 1135 Tension Adhesion Strength At 25% Extension At 50% Extension psi (MPa)

45 (0.310) 60 (0.414)

ASTM C 719 Joint Movement Capability percent ±50

ASTM C 1248 Staining (Granite, Marble, Limestone, Brick and Concrete) None

As Cured After 21 Days at 25°C (77°F) and 50% RH Followed by 10,000 Hours in a QUV Weatherometer, ASTM G 53

ASTM C 1135 Tension Adhesion Strength At 25% Extension At 50% Extension

35 (0.241) 50 (0.345)

2. Based on South Coast Air Quality Management District of California. Maximum VOC is listed both inclusive and exclusive of water and exempt compounds.

Description DOWSIL™ 795 Silicone Building Sealant is a one-part, neutral-cure, architectural-grade sealant that easily extrudes in any weather and cures quickly at room temperature. This cold-applied, non-sagging silicone material cures to a medium modulus silicone rubber upon exposure to atmospheric moisture. The cured sealant is durable and flexible enough to accommodate ± 50 percent movement of original joint dimension when installed in a properly designed weather seal joint. In a properly designed structurally glazed joint, the sealant is strong enough to support glass and other panel materials under high wind load.

Approvals/ Specifications

DOWSIL™ 795 Silicone Building Sealant meets the requirements of:

Federal Specification TT-S 001 543A (COM-NBS) Class A for silicone building sealants Federal Specification TT-S-00230C (COM-NBS) Class A for one-part building sealants ASTM Specification C 920 Type S, Grade NS, Class 50, Use NT, G, A and O ASTM Specification C 1184 for structural silicone sealants Canadian Specification CAN2-19.13- M82

Page 3 of 4 © 2017–2025 The Dow Chemical Company. All rights reserved. Form No. 61-885-01-0325 S2D

Colors DOWSIL™ 795 Silicone Building Sealant is available in 15 colors: white, limestone, champagne, natural stone, gray, black, bronze, sandstone, adobe tan, dusty rose, rustic brick, blue spruce, anodized aluminum, charcoal, and ivy green. Custom colors may be ordered to match virtually any substrate.

How to Use Please consult the Dow Americas Technical Manual, Form No. 62-1112, for detailed information on state-of-the-art application methods and joint design.

Preparation Clean all joints, removing all foreign matter and contaminants such as grease, oil, dust, water, frost, surface dirt, old sealants or glazing compounds and protective coatings.

Application Method Install backing material or joint filler, setting blocks, spacer shims and tapes. Mask areas adjacent to joints to ensure neat sealant lines. Primer is generally not required on non-porous surfaces, but may be necessary for optimal sealing of certain porous surfaces. A test placement is always recommended. Apply DOWSIL™ 795 Silicone Building Sealant in a continuous operation using positive pressure. (The sealant can be applied using many types of air-operated guns and most types of bulk dispensing equipment.) Before a skin forms (typically within 15 minutes), tool the sealant with light pressure to spread the sealant against the backing material and joint surfaces. Remove masking tape as soon as the bead is tooled.

Handling Precautions

PRODUCT SAFETY INFORMATION REQUIRED FOR SAFE USE IS NOT INCLUDED IN

THIS DOCUMENT. BEFORE HANDLING, READ PRODUCT AND SAFETY DATA SHEETS

AND CONTAINER LABELS FOR SAFE USE, PHYSICAL AND HEALTH HAZARD

INFORMATION. THE SAFETY DATA SHEET IS AVAILABLE ON THE DOW WEBSITE AT

DOW.COM, OR FROM YOUR DOW SALES APPLICATION ENGINEER, OR

DISTRIBUTOR, OR BY CALLING DOW CUSTOMER SERVICE.

Usable Life and Storage

When stored at or below 27°C (80°F), DOWSIL™ 795 Silicone Building Sealant has a shelf life of 12 months from the date of manufacture. Refer to product packaging for “Use By Date.”

Packaging Information

DOWSIL™ 795 Silicone Building Sealant is supplied in 10.3 fl oz. (305 mL) disposable plastic cartridges that fit ordinary caulking guns, 20 fl oz. (590 mL) sausages and 2 and 4.5 gal (7.5 and 17 L) bulk containers.

Limitations DOWSIL™ 795 Silicone Building Sealant should not be used:

In structural applications without prior review…