BOD - Issued for Construction.pdf

ISSUED FOR CONSTRUCTION

BASIS-OF-DESIGN

Revitalization of Catalina Headquarters Building and Site

El Yunque National Forest Mameyes II, Rio Grande, Puerto Rico 00745

Task Order – 1243ZP19F0002

US Forest Service

1720 Peachtree Road, NW, Suite 876 South

Atlanta, GA 30309-2405

Prepared By:

4400 Leeds Ave

Suite 250

Charleston, SC 29405

(843) 553-6670

TYLI Project: 650186.00

June 22, 2020

BASIS OF DESIGN - ISSUED FOR CONSTRUCTION

Table of Contents

1 - INTRODUCTION

PROJECT SUMMARY

2 - PROJECT TEAM

3 - ARCHITECTURAL

GENERAL SCOPE OF WORK

APPLICABLE CODES AND STANDARDS

EXISTING CONDITIONS

Demolition

NEW SCOPE OF WORK - COMPONENTS & SUBSYSTEMS

Occupancy & Use

Exterior Design Objectives

Existing Exterior Wall Construction

Exterior Roof Construction

Thermal Resistance Requirements

Exterior Stairs, Ramp, Handrails and Guardrails

Exterior Doors, Frames and Hardware

Exterior Windows, Glazing & Hurricane Shutters

Metal Flashing and Trim

Exterior Signage

Furniture and Fixtures

Floor Finishes

Wall Construction and Finishes

Ceiling Systems

Interior Doors, Frames and Hardware

Casework and Countertop

Acoustical Treatment and Sound Attenuation

Interior Room Signage

Fittings

Interior Colors

Life Safety Accessories

Accessibility Standards

Roof System

4 - STRUCTURAL

SCOPE OF WORK

APPLICABLE CODES AND STANDARDS

Project Geotechnical Conditions

Superstructure

Roof System

Exterior Walls

Foundation/Slab

Superstructure

Roof System

5 - CIVIL

SCOPE OF WORK

BUILDING SITEWORK

6 - MECHANICAL

APPLICABLE CODES & STANDARDS

Concept HVAC Approach

Mechanical System Controls

Design Conditions

Outdoor Air

7 - PLUMBING

APPLICABLE CODES & STANDARDS

Plumbing Design Criteria

General Plumbing and Piping Materials

8 - ELECTRICAL

APPLICABLE CODES AND STANDARDS

Power

Main Power Distribution

Power System Distribution

Receptacles and Equipment Connections

Transient Voltage Surge Suppression

Power Metering and Monitoring

Lighting

Lighting Controls

Emergency/Security Lighting

Telecommunication Systems

Security and Access Control Systems

Grounding System

Lightning Protection System

Electrical Vibration and Seismic Controls

Short Circuit Calculation and Coordination Calculation

Voltage Drop Calculations

Fire Alarm

APPENDIX A – ENERGY ANALYSIS

APPENDIX B – ELECTRICAL LIGHTING CUTSHEETS

APPENDIX C – PLUMBING FIXTURE CUTSHEETS

1 - INTRODUCTION

The following Basis of Design Report constitutes the compilation of Civil, Structural, Architectural, Mechanical, Electrical, Plumbing & Fire Protection basis of design information for project use and estimating prior to the completion of drawings for every discipline. This report is to be updated and included with submitted drawings and other documents at each project phase.

PROJECT SUMMARY

The Catalina Building is an existing two-story office building with a gross area roughly 5,686 SF per floor (11,372 SF total) that sits in the El Yanique National Forest in Puerto Rico. Due to the location of the facility, security and inclement weather is a main concern for the property and should be considered during the design. Currently the building is vacant, and the interior construction has been demolished.

The new space layout locates all the USFS support and storage need at the lower level. and the office, administrative and visitor needs at the upper level.

2 - PROJECT TEAM

Project Manager Daniel Robinson, AIA, NCARB (843) 806-4137

Project Architect Dennis Blaschke, AIA, NCARB (843) 806-4128

Civil Engineer J. Forest McKenzie, PE, PLS (843) 806-4120

Structural Engineer Rom Bala, PE (202) 922-7421

Mechanical Engineer Wade Myrabo, PE (843) 806-4116

Electrical Engineer Juan Avila, PE (843) 806-4111

Plumbing Engineer Gita Das, PE (843) 806-4119

Specifier Ken Bolin, AIA, NCARB (843) 806-4129

3 - ARCHITECTURAL

GENERAL SCOPE OF WORK

The following will be accomplished as part of the renovations/repairs of the Catalina Headquarters Building and the surrounding site.

HEADQUARTERS BUILDING

� Demolition of the existing chair lift and surrounding exterior walls at the west elevation

� Demolition of existing gutter and downspouts complete

� Demolition of security metal bars at windows and chair lift/stair tower

� Refurbish and repaint existing pipe and tube guardrails and handrail at the stairs and ramp

� Patch and Repair of exterior envelope at through wall penetrations for electrical conduit, lighting and mechanical louvers

� Repair soffit and fascia

� Patch and repair existing exterior walls as needed, remove existing stucco finish, and install 3-coat stucco on entire building envelope

� Replacement of existing casement windows with impact rated units and replacement of hurricane shutters with electrical operation and interior manual operation backup

� Addition of an elevator at existing stair area

� Enclose existing stairwell that is currently open to weather and provide hvac

� Interior upfit of the first and second floors of the Headquarters Building

� Install new CMU walls at 1st floor for durability

� Install new metal stud partition walls at 2nd floor for flexibility in future

� Install new interior finishes throughout facility including suspended ceilings, floor finish, paint, casework, etc.

� Install new exterior and interior light fixtures

� The scope of work includes a Life Safety Analysis and an ADAAG study for accessibility

HAZARDOUS MATERIALS STORAGE SHEDS (2)

� Install (2) Precast Concrete Modular Buildings (walls and roof panels), with containment floor/slab, doors, ventilation, and light fixtures

WORKSHOP BUILDING (Reconfigured Emergency Generator Building)

� Repair exterior hurricane damage, refurbish exterior coatings, roof replacement, new interior finishes, replace existing roll-up door, new mechanical ventilation and electrical systems, add one personnel door, and exterior concrete work pad with 4” concrete roof overlaid on structural steel framing

FUEL STORAGE & TRANSFER FACILITY CANOPY

� Install containment slab and equipment curbs under the canopy, and monoslope low-slope structural steel frame and purlin roof system. Roof shall be insulated sandwich standing seam metal roof panel to match Headquarters Building roof panels on structural deck, with gutter.

� Standing seam metal roof panels on structural framing, with gutters, downspouts, and splash blocks.

APPLICABLE CODES AND STANDARDS

The following codes and standards will be used in the design of the project:

� 2018 International Existing Building Code

� 2018 International Building Code

� 2018 International Energy Conservation Code

� 2018 International Fire Code

� 2018 International Fuel Gas Code

� 2018 International Mechanical Code

� 2018 International Plumbing Code

� ICC A117.1-2017 Standard for Accessible and Usable Buildings and Facilities

� Americans with Disabilities Act Accessibility Guidelines (ADAAG 2010 Edition)

� Design Guidelines for USFS Facilities

� Forest Service Manual, Chapter 6447

� Federal, State, County, and local environmental regulations

� National Fire Protection Association (NFPA) Standards (latest editions)

� CIO requirements package

� U.S. Green Building Council (USGBC) - LEED v4.1 for Interior Design & Construction: ComInteriors

� American Aluminum Manufacturers Association (AAMA)

� National Roofing Contractors Association (NRCA), Roofing and Waterproofing Manual

� Sheet Metal and Air Conditioning Contractors’ National Association, Inc. (SMACNA)

� Architectural Sheet Metal Manual

� Steel Door Institute (SDI)

� American Hardware Association (AHA)

� Building Hardware Manufacturers Association (BHMA)

� American Society of Testing and Materials (ASTM)

� Sealants: A Professionals’ Guide from the Waterproofing & Restoration Institute (SWRI)

EXISTING CONDITIONS

The Catalina Headquarters building is an existing vacant building that has been gutted in preparation for this task order’s renovation and in response to extensive flooding due to recent hurricanes. New insulated sandwich standing seam metal roof panels have been installed for the main structure. An entire interior upfit is required with new interior configuration of spaces on both the lower and upper levels

Additional smaller demolition of, repairs to, and replacement of structures will be part of the site renovations

Demolition

Most general demolition has been performed. Additional specific areas of demolition are:

� Demolition of existing cast-in-place and CMU walls

� Demolition of the existing chair lift

� Demolition of existing gutter and downspouts complete

� Demolition of security metal bars

NEW SCOPE OF WORK - COMPONENTS & SUBSYSTEMS

HEADQUARTERS BUILDING

Occupancy & Use

� The building is an existing structure with approximately 11,370 gross square feet, and approximately 10,270 sf of net usable space with incorporated design changes due to renovations and additions

� The building will be classified as B Business Occupancy, with mixed uses of Moderate Hazard Storage and Assembly, to generate an occupant load of approximately 132 persons

� The building has full time occupants for USFS staff, transient occupants which will do business with the USFS staff, and transient daily occupants or visitors. The facility is available 24hrs a day for 365 days a year. Fuel truck deliveries and fuel loading/offloading are expected to occur during normal business hours and in emergency response conditions

Exterior Design Objectives

� Maintain the general fenestration of the building (doors and windows), infill demolished wall areas with like-kind masonry infill and exterior plaster (stucco) and enclose the existing exit stairwell into a new stair and elevator lobby area

Existing Exterior Wall Construction

� The existing building consists of concrete masonry units and cast-in-place concrete walls with a plaster (stucco) finish. The plaster finish needs repair and should be removed to substrate, with new 3-coat system

� There are several locations around the building that will require infill of the exterior wall construction at existing doors, louvers, and window openings that will be removed in the proposed new plan layout. At these areas 8” concrete masonry units will be used to infill existing openings

� The new elevator/stair enclosure at the west elevation will be constructed of concrete foundations/pit and 10” concrete masonry units with a plaster (stucco) finish

� We have specified an elastomeric paint over the final finish coat of the plaster (stucco) finish for additional durability against hot humid moisture of environment.

Exterior Roof Construction

� The roof over the Headquarters Building is currently being replaced and is assumed to be completed before construction begins on the work within this task order

� The new roof over the enclosed stair/elevator tower will be Polyvinylchloride (PVC) single-ply roof membrane with PVC membrane base flashings. All membranes will be white. The single-ply roof membrane will be a combination of mechanically fastened and adhered to existing concrete.

Thermal Resistance Requirements

� The IBC thermal envelope requirements require continuous R-5.7 insulation for this particular climate zone and wall construction. It is proposed that closed-cell foamed-in-place insulation be applied on the entire inside face of mass walls in the 4” metal stud partitions that will be held off of the inside face of the wall 2”.

Exterior Stairs, Ramp, Handrails and Guardrails

� The existing exterior concrete stairs will remain but will be pressure washed and new rubber treads and risers installed on all treads. The handrails will be remain, be refurbished, and painted.

� The existing exterior ramp will remain, but will be pressure washed and repaired/sealed as needed

� Exterior steel handrails and guardrails at stairs and ramps to remain, be refurbished, and painted

Exterior Doors, Frames and Hardware

� Aluminum storefront entrances are provided at the upper level main visitor entrance at the front of the building and at the new elevator/stair lobby at the lower level on the west elevation

� Hollow Metal Doors and frames will be provided at the other entrances to the building at the lower level

� All hardware (hinges, locks and latches, overhead closers, exit devices) will be stainless steel, commercial grade, suitable for the operational requirements and in compliance with life safety code and handicapped accessibility requirements. A master keying system will be provided and will be compatible with the existing USFS system. If desired by the Government, an emergency access key box for exterior door fireman key access can be provided. Kick plates on the closer face of all doors will be provided. Low infiltration weather-stripping and seals will be provided along with thresholds with offsets to stop water penetration while maintaining accessibility compliance

Exterior Windows, Glazing & Hurricane Shutters

� Aluminum Projecting/Casement set in Aluminum frames will be specified for all exterior operable windows, with insulated hurricane glazing

� At operable windows and many of the storefronts, new hurricane shutters (specified as Exterior Protective Shutters) with electrical and manual operation will be applied to the exterior envelope for additional hurricane protection

� Aluminum storefronts with fixed transoms and sidelights will be used at storefront entrance doors, with insulated hurricane glazing

� All windows to be designed with insulated hurricane glazing, low-e film, and designed to applicable wind loads for components and cladding

� All interior window sills will receive square cut 5/4x poplar with a 1x4 poplar apron, with eased edges. No window trim above sill will be provided

Metal Flashing and Trim

� Remove existing downspouts complete, patch and repair existing wall as needed

� New aluminum fascia will be provided to transition between the newly installed insulated metal sandwich panel roof system and the existing concrete roof system.

� New aluminum gutters and downspouts will be provided, with splash blocks

� Due to the hazardous wind conditions expected to be encountered at the Catalina site, it is recommended that soffit infill panels or materials not be installed. Alternatively, the existing concrete soffit cavities will be cleaned and painted. The threaded rods, washers, and nuts anchorages for the newly installed roof system will be specified to be cut, sandblasted and painted with high-build paint

Exterior Signage

� Provide ADA accessible signage at exterior accessible means of egress/public entrance.

INTERIOR DESIGN

Furniture and Fixtures

� FFE is not provided for in this Task Order. USFS will provide a furniture layout to A/E for outlet/data locations and coordination.

Floor Finishes

� Floor finishes will consist of luxury vinyl tile, carpet tiles, and porcelain tile. Wall base materials will be provided that are compatible with the floor and wall materials. Consideration of Marmoleum flooring by Forbo will be considered for LEED credits.

� Ceramic Tile @ Bathrooms: 2” x 8” over CMU, thin set in colored grout

� Ceramic Wall Tile @ Showers : 2” x 8” over CMU, thin set in colored grout

� 4” Gypsum Walls, Type: 5/8“ GWB + 4” metal studs @ 16” oc + 5/8“ GWB

� GWB, Typical: Primed and Painted 2-coats eggshell

� Ceramic Tile @ Bathrooms: 2” x 8” with cementitious backer board, thin set in colored grout

� Ceramic Wall Tile @ Showers : 2” x 8” with cementitious backer board, thin set in colored grout

Wall Construction and Finishes

� 8” Concrete Masonry Units will be used on the entire lower level for increased durability. The upper level will have wood framing construction. Wall finishes will consist of painted moisture resistant gypsum board and painted concrete

� Mold/Mildew/Moisture resistant gypsum board will be used throughout the facility for greatest durability against hot humid moisture of environment.

Ceiling Systems

� Moisture Resistant Suspended Acoustical Ceiling Tiles with a heavy-duty metal suspension system to meet building area seismic requirements. Ceiling heights vary throughout the building. Exposed roof deck (no ceilings) will be a design feature at the second floor in the open office areas

� Plaster finish on sheathing will be installed at the exterior Unconditioned café, with ceiling mounted light fixtures

� Mold/Mildew/Moisture resistant gypsum board will be installed at the restroom and shower areas.

� Acoustical Sound Baffles will be provided in the Open Offices to help absorb echo and noise.

Interior Doors, Frames and Hardware

� Interior doors will be solid core wood with painted finish at second floor office administration areas and hollow metal doors and frames will be used on first floor for durability. Paint colors of the doors and frames will be compatible with other building interior finishes. Interior door hardware locksets will meet USFS requirements

Casework and Countertop

� Casework will be solid wood with painted finish and comply with AWI Quality Standards, Section 400 and Custom Grade. Countertops shall be solid surface with integral coved backsplash

Acoustical Treatment and Sound Attenuation

� Provide Sound Attenuation Batts in walls and ceilings at Conference, Focus, Break, Restrooms, Copy/File, and Waiting/Admin rooms

� Acoustical Sound Baffles will be provided in the Open Offices to help absorb echo and noise.

� Per IBC 1206.2, Air-Bourne Sound Transmission at offices and bathrooms shall be not less than 50

STC

Interior Room Signage

� Provide ADA signage as required

� Identifying Devices: Interior doors will have an identifying device, per ADAAG requirements regarding Braille, raised characters, finishes (contrast), size and mounting height

Fittings

Toilet Accessories: Provide the following:

� Vanity Mirror 36” x 60” tilted, with shelf

� Toilet Tissue Holder: Brushed nickel, each restroom/stall

� Towel Bar: 24” Brushed nickel, each shower

� Robe Hook: Brushed nickel, each shower

� Grab Bars for ADA Water Closet: (1) 36” and (1) 42” stainless steel, peened

� Grab Bars for ADA Shower: (2) 24” and (1) 42” stainless steel, peened

� Baby Changing Station

� All toilet accessories to be installed per ADA recommended mounting heights

Interior Colors

� An interior Color Schedule will be provided to coordinate color choices and to coordinate User desire and designated finish requirements. Product and color that are shown as specific to one manufacturer was provided by USFS and is to establish basis of design intent. An equivalent product and color by another manufacturer may be submitted for approval

Life Safety Accessories

� Recessed Fire Extinguisher Cabinets @ Corridors & Stairs: Recessed Aluminum Cabinet

� Portable Fire Extinguishers: Provide 10 lb, Type ABC extinguisher under each sink at Pantry

� Portable Fire Extinguishers: Provide 10 lb., Type ABC extinguisher column mounted at Transfer Facility Canopy, inside each Hazardous Storage building, and the Workshop building

Accessibility Standards

The building design will address accessibility in the following areas:

� Exterior Ramp and Stairs will remain. Guardrails and handrails will remain, but be re-galvanized and painted.

� Interior stairs at West Stair/Elevator Lobby. Handrails will remain but be re-galvanized and painted.

� Interior halls and bathrooms will be fully compliant with latest ADAAG standards for:

» Egress door widths, aisle widths, door approaches, and other requirements

» Door Details, thresholds, and hardware

» Applicable clearances and heights for built-in casework

» Mounting heights for all plumbing fixtures and toilet accessories

» Mounting heights of equipment and fire extinguishers

HAZMAT STORAGE BUILDINGS

� The Hazardous Storage Buildings will have floor plans and elevations showing design intent, but will be provided per a performance specification

� Hollow metal doors and frames will be specified

� The building envelope will be specified as uninsulated precast concrete, including walls and roof

� The light fixtures will be specified as explosion proof

� Continuous ventilation will be provided

WORKSHOP BUILDING (Refurbished Generator Building)

� A standing seam metal roof panel system will be used.

� Removal of existing stucco finish and new application of cement plaster (stucco) on entire building

� Replacement of existing roll-up door. Hollow metal personnel door, frame and hardware will be added

� Install new interior and exterior light fixtures

� New interior finishes including floor finish, and walls

� A small covered canopy was added

SPCC FUEL STORAGE & TRANSFER FACILITY CANOPY

Roof System

� A standing seam metal roof panel system will be overlaid on a hot-dip galvanized structural framing system. Connection of the panels to the framing below will be by embedded weld or bolt plates.

The panels will be post-tensioned in place and utilize grouted keys in the adjoining panel edges for water tightness. The roof will be mono-slope and drain to a low eave with a gutter and downspout.

No other roof coatings or membranes will be provided nor are any penetrations anticipated

4 - STRUCTURAL

SCOPE OF WORK

The structural scope of work includes construction and renovation of the following structures and their foundations:

HEADQUARTERS BUILDING (Addition and Renovation)

� Removal and replacement of existing elevator and elevator enclosure

� Enclosure of the existing exterior “open” stair

� Renovation of the existing 1st floor space to include addition of masonry walls

� Renovation / removal of existing interior non-load bearing masonry walls and other infill walls. See Architectural Plan for further definition

� Repair of existing hurricane related damage affecting life-safety. This item includes limited scope and miscellaneous repairs

HAZMAT STORAGE BUILDINGS (2)

� Install (2)12’ x 20’ Precast / Pre-engineered Concrete Modular Buildings, with cast in place structural foundation for support

WORKSHOP BUILDING (REFURBISHED EMERGENCY GENERATOR BUILDING)

� Miscellaneous repairs and renovations, new structural roof framing and decking required.

� Installation of new wood framed canopy attached to existing building with cast in place structural foundation for support.

FUEL STORAGE & TRANSFER FACILITY CANOPY

� New structural canopy, foundation, and cast in place slab / walls, etc. for fuel storage and containment

APPLICABLE CODES AND STANDARDS

The following additional codes and standards will be used in the design of the project:

� ASCE 7-10 Minimum Design Loads for Buildings & other Structures

� American Society for Testing and Materials (ASTM)

� ACI 318-14 Building Code Requirements for Structural Concrete

� ACI 350-06 Code Requirements for Environmental Engineering Concrete Structures

� ACI 530-14 Building Code Requirements for Masonry Structures

� AISC 360-16 Specification for Structural Steel Buildings

� AISC 341-16 Seismic Provisions for Structural Steel Buildings

Project Geotechnical Conditions

Structural foundation design is based on recommendations contained in the project geotechnical engineering report.

Foundation design performance objectives include:

� Mitigate seismic event liquefaction settlement potential to less than 1” of total ground settlement for new construction elements

� Provide a minimum allowable bearing capacity of 3,000 PSF

� Provide a minimum stiffness coefficient of the soil equal to 250 PCI

HEADQUARTERS BUILDING

� Background: The Headquarters Building is an existing structure originally constructed in 1979. The original construction consisted of a high bay area and a multi (2) story administrative area. The original size was approximately 88’ x 50’. An addition and renovation were completed in approximately 1994. The addition provided a new bay of approximately 28 x 50 feet. The addition consists of a two-story addition of the administration space. An elevator and exterior open stair were also included as part of the addition. The project also included renovations and modifications of the existing spaces. The renovation included infill of the high bay space of the existing structure and removal of portions of the masonry infill walls at the interface of the high bay and two-story portion, and at the interface of the existing and new construction

� This Task Order includes the removal and replacement of the existing elevator with an ADA Accessible elevator which requires an increased footprint. The existing open-air stair will also be infilled. Other various renovations and repairs are also included as required by Architectural Plans.

Minor hurricane damage related structural repairs are also included

� Foundation/Slab: The existing and proposed foundations consists of shallow concrete bearing foundations as required to resist vertical and lateral loads

Superstructure

� Gravity Framing - The superstructure of the original construction consisted of cast in place concrete frames (beams and columns) with masonry infill. The second-floor framing system consists of concrete double tee joists. The roof also consists of concrete double tees with a gable roof form.

The addition included concrete framed walls, columns and beams with open web bar joists of steel.

Interior columns consist of coast in place / pre-cast concrete

� The proposed addition will include concrete walls for the elevator and infill stair areas. Various masonry infill is included at the open-air porches. Proposed interior renovations include masonry walls on the first floor (non-load bearing) and timber walls on the upper floor

� Lateral Load Resisting System – While a clear and delineated lateral system was not indicated on the original construction drawings or the addition it is expected to consist of concrete frames with masonry infill walls (for the original construction) and cast in place concrete shear walls for the 1994 addition / renovation

� The proposed new addition will consist of special reinforced masonry shear walls

Roof System

Multiple roof systems exist throughout the structure. The original structure included pre-cast double tee concrete joists, whereas the addition included steel bar joists with metal deck. A standing seam metal roof system has been recently added to the existing roof structures

� While the existing roof systems are not being modified during the proposed additions the stair and elevator towers are to be capped by a cast in place reinforced concrete roof slab on a non-composite 20-gauge metal roof deck. The roof structure will be designed to resist code prescribed components and cladding wind forces, and will be tied into the new concrete tower walls to create a diaphragm distributing the lateral forces to the shear walls below. Refer to Architectural Basis of

Design for detailed description of the roof membrane system

Exterior Walls

� The original building construction consisted of 8” masonry shear walls with both vertical and horizontal reinforcing. The 1994 renovations and additions featured 8” reinforced cast in place concrete shear walls

� The proposed stair and elevator towers will be comprised of reinforced concrete wall system designed as special reinforced masonry shear walls. These walls are anticipated to be normal weight, 10”-12” thick, and reinforced vertically at every 12”

� Reinforced Concrete Masonry Unit in-fill walls will be used at various locations along the exterior of the building where new doors and windows no longer require the full size of the existing openings.

These in-fill walls will match the existing wall thicknesses of 8”, will be grouted at 24” on center, and reinforced at every 32”

HAZMAT STORAGE BUILDINGS

� General Description: The Hazmat Storage buildings are approximately 12.00 ft x 20 ft (240 SF) in size. The building’s main purpose is to house and store hazardous materials used on site. The buildings consist of pre-engineered, pre-cast, pre-stressed / post-tensioned pre-fabricated structures. The structures include all required walls, roof, and floor. These structures will be designed and provided via a performance-based design

� Foundation/Slab: The foundation will consist of a reinforced mat foundation to support the pre-engineered, pre-fabricated structure. The foundation design is expected to include a 12” thick reinforced matt with steel embed plates for attachment of the pre-fabricated structures

WORKSHOP BUILDING (REFURBISHED EMERGENCY GENERATOR BUILDING)

� General Description: The Workshop Building consists of an existing masonry and wood framed structure. The existing building and systems will be renovated for the revised use. The renovation does not currently include or require structural upgrades of modifications

SPCC FUEL TRANSFER AND STORAGE

� General Description: Open steel framed canopy structure (size to be determined based on fueling / fuel storage requirements). The structure’s main purpose is to provide cover for the fuel transfer operations. The fuel offloading station also provides secondary containment for an amount equal to 110% times the design tanker truck. The exposed structural steel canopy system will be provided with a hot dipped galvanized finish. The roof structure of the canopy will consist of pre-cast, pre-stressed / post-tensioned concrete roof planks

Foundation/Slab

� The foundation for this structure will consist of perimeter grade beams / tie beams. Enlarged foundations will be provided at each column location. The raised concrete island will be 8” thick mat slabs, while truck lanes/containments will be 10" thick mat slabs. The raised island will incorporate thickened turndown edges at the perimeter. The truck lane will be sloped and be provided with end berms to provide secondary containment volume as required. Petroleum resistant waterstops will be provided at joints in the trenches to ensure containment of any leakage or spills. Careful consideration of construction and control joints will be incorporated into the design to minimize plastic shrinkage cracks in the monolithic slab. Concrete construction will be in accordance with ACI-350 Environmental Concrete.

Superstructure

� Gravity Framing - The tank storage canopy superstructure consists of hollow structural steel (HSS) cantilever column system. The columns are situated along the perimeter of the canopy roof. The perimeter roof framing consists of wide flange beams spanning from column to column. The roof structure will consist of pre-cast, pre-stressed concrete roof panels / planks with embed plates for attachment to steel roof beams

� Lateral Load Resisting System - The HSS columns will be anchored to the foundation grade beam with a robust stiffened base plate connection to provide base fixity of the columns. The columns, base plates, and base anchorage will be designed so that the canopy will resist lateral wind and seismic loads by the stiffness of the fixed base cantilever columns. The cantilever column concept results in a simple framing solution free from X-braces or field welding of moment frames

Roof System

� Low slope (< ¼”/ ft) roof system consisting of the roof structure will consist of pre-cast, pre-stressed concrete roof panels / planks with embed plates for attachment to steel roof beams. The design of the planks will include design and resistance for code prescribed components and cladding wind forces. The roof planks will be utilized as the roof diaphragm to distribute lateral loads to the columns

CODE REQUIREMENTS/UPGRADES

ASCE 41-13 Seismic Evaluation and Retrofit of Existing Buildings:

� As part of this project it is necessary to determine if structural upgrades and repairs are needed. A seismic evaluation and analysis, and the resulting upgrades / strengthening and retrofits are excluded from this scope of services. However, verification of code compliance of the proposed addition and renovation is required. The current editions of the IBC reference the IEBC (International Existing Building Code) for determination and implementation of code upgrades and retrofits. One option of determining code compliance is ASCE 41-13. IEBC, additionally, requires varying levels of upgrade on the determination of the extent of alteration. IEBC defines alterations as Level 1, Level 2, and Level 3. In addition, if a renovation or addition project increases the load (or decreases the capacity of a structural member by greater than 10% the element must be strengthened to current code requirements for new structures

� While a complete seismic evaluation was not performed a cursory review of the applicable requirements and associated checklists provided by ASCE 41-13 was completed. The aforementioned checklists are specifically developed to estimate the seismic stability of an existing structure and level of repair required. The cursory review and completion of the forms does indicate some degree of concern relative to the seismic performance of the existing structure. In addition, the report was completed at a cursory level without in depth calculations completed. The initial checklists were completed to be used as a tool and guidance to determine the likely degree of seismic safety provided. Varying degrees of non-comply items were identified and other areas that are unknown until further analyses can be completed. Based on our experience with buildings of similar age and type, we would expect a number of additional non-comply items to be found.

Another item of potential concern is the previous renovations

� Previously completed renovations have altered the lateral load path from the original design. It is noted that portions of existing shear walls have been removed in different locations on both the first and second floor of the building. While some lateral capacity has been removed it does appear other areas were added and some consideration of transfer of forces was implemented. The current scope does not include a complete evaluation of the existing conditions and previous renovations. It is the opinion of the engineer that further evaluation should be considered to fully determine the existing conditions and lateral strength / stability of the existing structure

� Provided no further investigation or retrofits are included it should be noted that the new / proposed renovations will be designed to meet current code requirements, however the existing building components may not meet current code and may not adequately perform under design level loading

� We recommend the building owner review the above information and consider further evaluation of the structure to determine if a full evaluation and or strengthening is desired / required. If additional services are desired please let us know so that we can provide an additional services proposal to address these items

� The completed ASCE 41-13 Seismic Evaluation Checklist is included at the back of this document in the Appendices

5 - CIVIL

SCOPE OF WORK

The following will be included in the work of this Task Order:

� Removal of 17 significant trees (8” – 24”)

� Demolition and replacement of existing asphalt driveways and parking stalls and appurtenances

� Site drainage will be redirected away from the building and sheet flow off the site

� Provide concrete sidewalks from parking stalls to existing building

� Provide concrete pads for truck wash down/storage, hazmat buildings, generator, and fuel storage

� Provide a new pump station with sewer service to building. The pump station will connect to a force main located near the El Portal Visitor Center.

� Utilize appropriate best management practices in accordance with sound engineering practices.

These BMP’s include, but are not limited to; silt barriers (fencing), temporary grass stabilization, and permanent grass stabilization

BUILDING SITEWORK

SITE PREPARATION

Site Clearing: The following trees will be removed (including stump):

� 11” Hardwood

� 10” Hardwood

� 24”” Hardwood

� 23” Hardwood

� 26” Hardwood

� 15” Hardwood

� 30” Hardwood

Site Demolition and Relocations

� Asphalt pavement

� Asphalt parking stalls

� Concrete curb & Gutter

� Trench Drains

� Concrete Sidewalk

Site Earthwork

� Approximately 1.0’ suitable fill hauled in to accommodate new drainage plan

SITE IMPROVEMENTS

Roadways: The following Driveways will be included:

� 1 Asphalt pavement Driveway with an 8” base

� 18” Concrete curb & gutter outlining driveways

Parking Lots: The following parking stalls will be included:

� Asphalt pavement parking stalls with an 8” base

� 18” Concrete curb & gutter outlining driveways

� Provide concrete pad for various utilities

Pedestrian Paving: The following will be included:

� 5’ wide, 4” thick concrete sidewalk along parking stalls

Concrete Pavement

� 6” thick Concrete pad are provided on South portion of the parking lot for washdown and storage

� 6” – 8” thick Concrete pad provided for two (2) 12’ x 20’ hazmat building located on the East side of the parking area

� A covered fuel storage and transfer area will be provided. It will provide a contained fuel transfer area for off-loading fuel into 3,000 gallon diesel and 1,000 gallon gasoline fuel storage tanks. These tanks are provided with concrete encasement for a 2-hr UL fire rating and impact protection from hurricane driven debris. This covered facility will also house the 125kw emergency generator, which will be located adjacent to the diesel storage tank. A gasoline and diesel dispenser will also be provided to enable the USFS to fill vehicles and fuel containers. The entire facility will drain to a central trench and sump providing a containment volume of 3,300 gallons. The facility will be constructed in conjunction with a SPCC plan for the Catalina Site including hazardous materials stored in the new Hazardous Material Storage Buildings and in accordance with EPA regulations

Landscaping

� For preliminary landscape budget, assume sod at all landscape areas

SITE MECHANICAL UTILITIES

Storm Sewer: The following will be included:

� 2 Trench drains to divert stormwater in low areas

� Concrete pipe to convey stormwater off site

Sanitary Sewer: The following will be included:

New 6” PVC sanitary sewer service to connect building

New package pump station

New 2” PVC force main and connection to force main located near El Portal

Associated cleanouts and gate valves

6 - MECHANICAL

APPLICABLE CODES & STANDARDS

The following additional codes and standards will be used in the design:

� 2016 ASHRAE 90.1

� 2016 ASHRAE 62.1

� 2016 ASHRAE 189.1

Concept HVAC Approach

� All of the building’s existing HVAC equipment has been demolished and removed from the site. Two new system options are provided for this project

HEADQUARTERS BUILDING

� Option 1: The building will be served by a variable refrigerant flow (VRF) heat pump system. The VRF system will consist of pad mounted air-cooled condensing unit modules located on the exterior adjacent to the building. The indoor units will consist of a variety of ceiling cassettes, wall mounted fan coils, and small ducted VRF fan coil units. The building will also be served by a dedicated outdoor air system (DOAS). The DOAS will supply the code required outside air to the entire building. The DOAS system will be ducted to deliver conditioned fresh air to all required spaces within the building.

� The I.T. room in the headquarters building shall be conditioned by an independent split system air conditioner to ensure cooling can continue throughout the winter months while the other spaces may be calling for heat.

� The overall building HVAC load was determined using Carrier’s HAP program and the results are attached in the Appendices. In addition, USPS has requested that the facility have capability to be able to run in a fan-only operation. All systems will be able to run in this mode and there will also be individual control to run at limited capacity if needed

� Exhaust fans: The restrooms will have cabinet exhaust fans and exhaust air will be ducted to the exterior

HAZMAT STORAGE BUILDINGS

� The pre-engineered buildings containing hazardous chemicals shall be ventilated at a rate of 1 CFM/Sq. Ft. An explosion-proof and spark-resistant exhaust fan shall be mounted to an exterior wall of each hazmat storage building with the exhaust intake ducted down to within 12” A.F.F. Fresh air shall be taken from a louver across the building from the exhaust fan to maximize fresh air circulation in the spaces.

WORKSHOP BUILDING

The former emergency generator building shall be ventilated at a rate of 10 CFM/person and 0.18 CFM/Sq. Ft. No air conditioning systems are currently present in this space and the workshop will only be served by fresh outdoor air entering through a louver. One wall mounted exhaust fan will provide the air ventilation and circulation required to ensure life safety in the workshop.

SPCC FUEL STORAGE AND TRANSFER FACILITY

Due to this structure being open to the atmosphere, no HVAC equipment will be needed to serve this space.

Mechanical System Controls

� Option 1: The VRF system will also have a universal system controller than can be used to monitor and adjust each component. The indoor fan coil units will be provided with a simplified wall mounted controller for individual zone control. All of these units and controllers will be tied back to universal system controller located in a space to be determined. The Dedicated outdoor air split system will have a dedicated controller as well that will also be in a location to be determined. All controllers and thermostats will be hard wired

� Exhaust fans: Bathroom exhaust fans will be controlled by occupancy sensors in tangent with lighting control.

� Auxiliary Buildings: Other buildings on the site will be provided with either natural or mechanical ventilation

Design Conditions

Summer:

� Outdoor Condition: 92 °F dry bulb, 77°F wet bulb

� Indoor Condition: 72°F dry bulb, 50% RH

Winter:

� Outdoor Condition: 69°F dry bulb

� Indoor Condition: 72 °F

Outdoor Air

The outdoor airflow rates will be based on the following ASHRAE Standard 62.1-2013 requirements:

� Conference/Meeting Room: 5 cfm/person plus 0.06 cfm/ft2

� Office Spaces: 5 cfm/person plus 0.06 cfm/ft2

� General Spaces: 5 cfm/person plus 0.06 cfm/ft2

� Corridor: 0.06 cfm/ft2

� Utility/Electric Rooms: 0.06 cfm/ft2

� Storage Rooms: 0.12 cfm/ft2

7 - PLUMBING

APPLICABLE CODES & STANDARDS

The following additional codes and standards will be used in the design:

� 2017 International Plumbing Code

Plumbing Design Criteria

� The overall scope of the plumbing work includes providing plumbing fixtures, hot and cold water, waste and vent piping as required for the Administrative Building

ADMINISTRATIVE BUILDING

� All of the building’s existing plumbing fixture, equipment’s and all associated branch piping will be demolished and removed from the site. Existing 2” domestic cold-water main shall be reused. Existing underground 4” sanitary main will remain for future connection.

� Domestic cold water in the Administrative Building will be provided to all plumbing fixtures in the first floor and second floor restrooms, shower rooms, electric water coolers, ice maker, kitchen sinks and mop sink and water heater supply. Distribution piping will be routed above ceiling to all plumbing fixtures and connected to existing main 2” water line above first floor ceiling. Refer to Architectural Plans for fixture locations and counts.

� Domestic hot water will be generated at 140° F by electric heat pump water heater, storage tank type water heaters. A master mixing valve set at 120° F will be provided at water heater to provide tempered hot water to all pumping fixtures inside the building. The water will be tempered down to 110° F at each lavatory in the restrooms with individual tempering valves. The water heaters will be located in the first-floor storage room and will be approximately 65 gallons. Basis of design is by Rheem model no. Hpld65.

The system will be provided with a hot water recirculation system. All new 1” hot water and 3/4” hot water return main line will run above ceiling to serve first floor and second floor plumbing fixtures. Refer to

Architectural Plans for fixture locations and counts.

� Sanitary drainage piping will be routed from the first floor and second floor plumbing fixtures and be collected horizontally below the building and discharged by gravity to the existing 4” sanitary below grade.

All new vent line for first floor and second floor plumbing fixtures will run above ceiling and 4” vent through roof will be provided. Refer to Architectural Plans for fixture locations and counts.

� Sump pump will be provided at the elevator pit and sump pump drain will be routed to exterior or nearest hub drain

� Refer to Architectural Plans for plumbing fixture locations and counts

� Water closets shall be floor mounted, pressure assist flush tank (1.28 GPF), vitreous china, with elongated bowls

� Urinals shall be ultra-low flush (0.125 GPF), wall mounted type, with manually operated valves

� Integral to counter lavatories shall be fitted with momentary pushbutton metering sensor, adjustable cycle time, single-lever temperature adjustment, 0.5 gpm aerator, mixing valve below counter to limit hot water supply to 105 degrees

� Wall hung lavatories shall be vitreous china, shall be fitted with momentary pushbutton metering sensor, adjustable cycle time, single-lever temperature adjustment, 0.5 gpm aerator, mixing valve below counter to limit hot water supply to 105 degrees

� Shower: Single lever mixing valve and 1.5 gpm flow restrictor. Accessible shower heads shall be handheld type with wall mounted bar

� Housekeeping mop sinks shall be terrazzo type with wall anchored heavy duty janitor sink faucets (2.5

GPM) with vacuum breakers, hose connections, and braces

� Kitchen sinks shall be heavy gauge, undermount stainless steel, self-rimming, with single lever, pull out spray faucet (1.5 GPM), and garbage disposals

� Water Coolers will be wall mounted, stainless steel, single level with bottle filler, 8 gph at 50 degree water

� Hose Bibbs will be recessed, quarter turn, with cover plate and vacuum breaker

� Floor drains shall be provided inside each restroom and next to water heater. Floor Drains shall Nickel-bronze with Trap Guard. Trap Guard to be flexible, removable self-closing elastomeric plug

� Sump Pump: Sump pump shall be oil minder type simplex pump. Basis of design is Stancor model SE50

SPCC FUEL STORAGE AND TRANSFER FACILITY

� One 3,000 gallons of diesel fuel and 1,000 gallons of gasoline in aboveground storage tanks will be specified by ConVault. Both tanks will be provided with primary, secondary and atmospheric venting, high- and low-level sensors and local tank gauges. The diesel tank will be provided with 30” manhole with ladder, top fill spill container and 4” port opening for supply and return piping for fuel transfer pump skid, filtration skid. Both tanks will be provided with 4” port opening for supply piping to remote dispenser

� Packaged diesel fuel transfer pump skid will be provided inside an exterior stainless-steel enclosure. Fuel supply and return piping will be install from the generator to the pump skid and fuel supply and return piping will be install from the pump skid to the diesel tank. Basis of design for factory packaged, pre-engineered fuel transfer pump skid shall be by Preferred Utilities Model . Refer to plans for basis of design.

� Packaged automatic diesel fuel filtration system will be provided inside an exterior stainless-steel enclosure. Fuel supply and return piping will be install from the filtration skid to the diesel tank. Basis of design for packaged automatic fuel filtration system shall be by Preferred Utilities. Refer to plans for basis of design.

� Dispenser stand for diesel and gasoline will be provided with dispenser pedestal adjacent to transfer area for above ground tank installation. Dispenser pump will provide fuel at 22gpm. Provide filter on gasoline at the dispenser. Basis of design for dispenser shall be by GasBoy.

General Plumbing and Piping Materials

� Domestic water: Above grade Domestic water piping shall be Type L copper, hard drawn with copper fittings. Under slab domestic water piping shall be Type K, soft copper with copper fittings. Isolation valves shall be ball valves with two-piece bronze body, blowout-proof stem, and full port

� Insulation for Domestic Water: Provide 1” flexible elastomeric insulation for 1” and smaller Domestic Hot

Water and Hot Water return piping. 1/2” flexible elastomeric for 1” smaller Domestic Cold Water piping and 1-1/2” flexible elastomeric for Domestic Cold Water piping larger than 1” will be provided

� Sanitary Sewer piping: Above Grade sanitary waste and vent piping shall be Schedule 40 PVC, ASTM D

2665, Schedule 40, solvent welded joints. Below Grade sanitary waste piping shall be Schedule 40 PVC, ASTM D 2665, Schedule 40, solvent welded joints.

� Fuel oil piping: Fuel oil pipe shall be ASTM A-312 Type 316L (welded or seamless) schedule 40S. All joints shall be butt welded fittings

8 - ELECTRICAL

APPLICABLE CODES AND STANDARDS

The following additional codes and standards will be used in the design:

� National Electrical Code (NEC) – 2017

� NFPA 101 - Life Safety Code – 2015

� NFPA 72 – National Fire Alarm and Signaling Code – 2016

� NFPA 780 -- Standard for the Installation of Lightning Protection Systems – 2017

� ASHRAE 189.1, Standard For The Design of High-Performance Green Building – 2014

� ASHRAE 90.1, Energy Standard For Buildings Except Low Rise Residential Buildings – 2010

� BICSI Standards

� National Electrical Manufacturers Association (NEMA)

� Institute of Electrical and Electronic Engineers (IEEE)

� Association of Edison Illuminating Companies (AEIC)

Power

The following paragraphs provide a general description of the power distribution requirements for the project. Table 9.1 provides a high-level Peak Demand Calculation for the building:

Main Power Distribution

� The power distribution will consist of conduits, boxes and cables from new panelboards to receptacles, mechanical and utilization equipment. A new main distribution panelboard (MDP) (800Amp, 3-phase, 208V) will be installed inside the main electrical room located at the first floor.

Each floor will receive its own dedicated receptacle and lighting panelboards so as to minimize deck penetrations. Panelbaords will be dedicated to lighting, main mechanical, and utilization loads

Load type Voltage Phases KVA Added

Lighting 120 1 5

Receptacles 120 1 25

HVAC/Mech 208 3 53

Elevator 208 3 10

Appliance (Microware, Ref, & Ice Machine

120/208 1 21

IT, Access Control Loads

120/208 1 5

Fire Alarm 120 1 3

Total Demand 122

Add 45% Spare Future Capacity

176.9

Min Service at 208V, 3-Phase

500 Amp (does not include…