_CobbDouglasHealthDept_ProjectManualNarrative.pdf

Bridging documents for the

DOUGLAS COUNTY

PUBLIC HEALTH DEPARTMENT EXPANSION

May 18, 2026

1200 peachtree st ne, suite 750, atlanta, ga 30309

o. 678 251 4602 mcmillanpazdansmith.com

Architectural Narrative

Project Information and Objectives

Cobb & Douglas Public Health (CDPH) is undertaking a critical expansion to meet the rising demand for comprehensive, accessible, and equitable health services. Driven by population growth and emerging health challenges, this initiative will enhance CDPH’s capacity to protect and promote community well-being.

Strategic Priorities

1. Expansion of Core Services

• WIC Nutrition Program – Enhance maternal and early childhood health with expanded access to nutrition, breastfeeding support, and education.

• Safe Kids Injury Prevention – Reduce child injuries through increased outreach, community engagement, education and safety device distribution.

• Pregnancy-Related Services – Improve maternal outcomes with expanded prenatal care coordination and support.

2. Introduction of New Services

• Express Clinic – Offer rapid pregnancy, HIV and STI testing, blood pressure checks, and more.

• Chronic Disease Prevention – Proactively address hypertension, diabetes, and heart disease through education and early intervention.

• Tuberculosis Screening & Treatment – Increase capacity for TB management, especially in high-risk populations.

Key Design Goals

• Access & Equity: Create a welcoming, inclusive environment with improved geographic reach and support for underserved communities. Include a new drive-through bay to allow for car seat checks in a safe setting out of the weather.

• Flexibility: Design adaptable spaces for future services and evolving public health needs.

• Efficiency & Safety: Improve patient flow, reduce waiting times, and ensure safety in specialized areas such as

TB care. Improve traffic flow in partnership with the Douglas County Library co-located on this site.

• Sustainability: Incorporate natural light, energy efficiency, and wellness-focused design elements.

These Bridging documents are meant to serve as an initial exploration to assist a Design Build team in understanding the scope of this expanded and remodeled facility to make a more informed response to a request for proposal.

The project is located at 6770 Selman Drive at the current location of the Douglas County Public Health Department.

The scope of the project includes a 4,600 sf one story addition to a 12,000 sf existing building. Due to the critical nature of the work being undertaken at the Health Department the facility will need to remain open during construction. The project will have 2 phases: the first phase will include new construction work of the addition, with the second phase being interior renovation of the existing building. Refer to drawing G003 for more specifics regarding building occupancy type, building height, plumbing fixture requirements, etc.

The expansion of the current community and clinical health services requires a more efficient layout of space. The design illustrated in the bridging documents creates a new wing for clinical health programs. Much needed support spaces like a common reception area and multipurpose space have been added within the footprint of the existing building. Restroom facilities are being added and renovated, bringing the facility into compliance with accessibility regulations.

Allowances

Allowances referred to in this project manual shall be utilized by the Design-Builder, as noted, and shall not include design fees, general conditions, or markup. All pricing for allowances shall be based upon competitive regional rates and is subject to review and approval. The Design-Builder shall provide a five percent (5%) Design contingency within

Base Bid. This contingency is to be used for design updates and changes by the Owner.

Project Management

Schedule

Within ten (10) calendar days of the Notice to Proceed, the Design-Builder shall provide CDPH with a development schedule, from Notice to Proceed to Final Completion, which shall be 30 days after the issuance of the Certificate of

Substantial Completion. Included in the schedule shall be milestone dates for the completion of design at both the

50% and 100% completion of the construction documents, as well as the milestone for identifying Guaranteed

Maximum Price (GMP). Schedule shall indicate anticipated timing associated with obtaining required permitting.

During construction period, the schedule shall indicate a significant milestone to demonstrate project progress to

CDPH. The proposed schedule shall indicate a Date of Substantial Completion.

A charted progress schedule shall be maintained, and the team shall hold routine scheduled meetings with CDPH to review progress of the project and projections to completion.

During design, meetings shall be held every (2) weeks.

During construction, on-site meetings shall be held every (2) weeks.

Construction Documentation

After the start of work, Design-Builder must submit a weekly site progress report (including photographs illustrative of completed work and others taken from static points to illustrate progress).

Special inspections

Geotechnical Investigations:

Utilize the geotechnical report provided for soil bearing capacities, foundation wall parameters, frost depth, Site Class, and pavement design recommendations, etc.

Abatement and environmental investigations:

Utilize the environmental/hazardous materials report provided for information regarding potential abatement requirements during demolition and construction on the existing structure.

Construction Materials Testing:

Required construction material testing shall be provided by a third party hired by the CDPH. Reports are to be provided to CDPH.

IBC Chapter 17:

Adhere to all inspection and documentation requirements of IBC Chapter 17.

The Special Inspector services will be provided by a third party hired by the CDPH. Reports are to be provided to the

CDPH.

Temporary facilities and controls

Temporary construction trailers/ field offices, sanitary facilities, fire protection, safety barriers, trash storage containers, including their removal shall be included in the cost.

Product requirements

Design criteria illustrated in the bridging documents shall be considered minimum criteria and shall not relieve the

Design-Builder of the responsibility to meet the performance criteria of jurisdictional code requirements that apply. In the event that any portion of these bridging documents conflict with another portion, then the more stringent shall apply. It is understood that all items described in the bridging documents are to be supplied by the Design-Builder and are to be new and of first quality. The Design-Builder may submit equivalent alternates to any of the bridging documents, subject to the prior approval of CDPH.

Construction waste management and disposal

The Design-Builder must establish construction waste collection before construction work begins, and the Design-

Builder must take steps to keep the site clean and waste from being littered throughout the site and that garbage is properly sorted/stored while awaiting removal, and to schedule removal at appropriate intervals during the course of the project. The Design-Builder must also establish an appropriately sited area for washing construction vehicles and otherwise take steps to keep mud and dirt from soiling roads outside the construction site.

A. After the completion of work, construction materials and all temporary utilities/facilities must be removed immediately from the site.

Operation and maintenance data

Upon completion, the owner shall be provided with electronic copies of operations and maintenance manuals upon completion of the project.

Project record documents

Upon completion of the work the owner shall be provided with one hard copy and two electronic copies in PDF version of the final Record Drawings, Specifications, and Submittals.

Surveys & As-Builts:

Design-Builder shall provide all surveying necessary for construction and an ALTA As-Built shall be included in the scope of work.

Existing conditions

Hazardous material assessment

Hazardous materials / environmental investigations are to be provided by CDPH to the Design/Build Team.

Geotechnical investigations

Geotechnical investigations are to be provided by CDPH to the Design/Build Team.

Concrete

The subfloor/slab on grade and footings of the new construction will be reinforced concrete, ref structural narrative.

15 mil minimum under slab vapor barrier and termite treatment shall be provided by the Design Builder. Joints and accessories shall be provided per ACI standards.

Masonry

The building façade design shall include brick masonry and split face concrete masonry units to match the existing.

The contractor shall utilize ASTM and BIA standards for product (brick, mortar, vent weeps, through wall flashing, masonry ties, etc.) selection and installation, mortar joints and thicknesses shall match existing construction.

Structural Steel

The new construction will utilize structural steel as the framing system, ref structural narrative. Steel should be primed gray and follow relevant industry fabrication standards. Steel should be provided by an AISC certified fabricator/erector. Exposed structural elements in public spaces shall be AESS 2 as a minimum.

Rough Carpentry

As a type II building, all blocking and telecom mounting boards shall be treated for fire resistance. Roofing materials shall be treated with preservatives.

Sheathing

Moisture and mold resistant glass matt-faced type X gypsum sheathing board shall be utilized to sheath new construction. Special instances-for example signage locations-may require a “nail-able” surface where fire rated sheathing may be substituted in limited quantity with appropriate weather resistive barriers employed.

Cabinets

All cabinetry to be plastic laminate clad, meeting AWS (woodwork), NAWS (woodwork), BHM (hardware) and NEMA

LD 3 (high pressure laminate) standards utilizing low VOC adhesives.

Thermal insulation

Insulation shall be provided that either meets prescriptive codes or passes COMCheck modeling to meet current energy codes for walls and roof assemblies. Insulation shall include thermal batts as well as exterior continuous polyisocyanurate (wall and roof locations) or mineral wool (wall locations) board products.

Weather Barriers

A fluid applied vapor permeable, water resistive, air barrier shall be applied to the building sheathing. Accessories to bridge and seal air gaps and penetrations shall be utilized.

Roofing

Existing TPO membrane roof to remain, patch and repair as required. New construction to receive fully adhered 60 mil TPO roof to match existing roof. Provide coverboard, walk pads for mechanical unit access and accessories (within same roofing system product line).

Exterior Metal Panel Cladding

Provide dry seal metal composite material exterior wall cladding system. Provide thermal z girt furring for attaching panels to sheathing through continuous insulation. Panel to meet NFPA 285 standards.

Exterior Soffit, Sheet Metal Flashing, and Trim

Exterior Soffit Material shall be metal linear plank. Edge metal trim, roof coping and flashing to match soffit material finish, comply with ASTM standards and be compatible with roofing systems.

Doors, Door Hardware, and Door Frames

Non entry exterior doors to be heavy duty, flush, hollow metal with polyurethane core, with galvannealed coating.

Hardware to match existing hardware. Exit doors to receive panic devices. Doors to receive access controls, protections plates, closers, and other accessories where need is required. Interior doors to be solid core wood flush panel doors, with vision lites as appropriate. Door frames to be full profile and continuously welded.

Aluminum Framed Entrances, Storefront, Curtainwall, Glazing

Storefront shall be provided that matches the size, profile, and finish of the existing facility. Storefront entry doors with push button actuators to be included at new entry vestibule. Exterior glazing to be insulated and match exterior tint of existing glazing. Glazing shall meet prescriptive or COMCheck energy modeling requirements.

Typical Wall Construction

Typical materials utilized in wall construction shall be non-structural metal wall framing, gypsum wall board, and sound attenuation blankets. All walls shall extend to deck and include sound attenuation blankets. Corridors, large meeting room, and waiting room walls shall incorporate impact-resistant gypsum wall board. Fire-resistant gypsum wall board shall be utilized where required to achieve rating.

Interior Finishes

Reference finish plan for basis of design finish levels.

Division 10

Toilet partitions to be solid high-density plastic overhead braced frame. Restroom accessories shall be designed and provided to develop or incorporate health department standards. The Design Builder shall provide AED units, fire extinguishers, and respective cabinets. An onsite bike rack location shall be identified and provided by the Design

Builder. Corner guards shall be provided at appropriate locations throughout the project.

Signage

The Design-Builder shall provide identifications signage as well as wayfinding / room signage / code required signage for the facility.

Civil - Landscape Schematic Narrative

Project Description

The project is located at 6770 Selman Drive, Douglasville, GA within the city limits of Douglasville. The project includes an approximately 4,992 square foot building expansion and access improvements for the Cobb & Douglas

Public Health facility, potential new fire protection water service, and remediation of the existing parking lot. The total impervious area affected by the project is expected to be less than 5,000 square feet. Stormwater management is not expected to be provided.

Grading

The finished floor elevation of the Public Health building expansion is anticipated to match the existing single- story building. No retaining walls are anticipated based on preliminary architectural drawings and existing site topography.

Currently, there is no sidewalk along Selman Drive on the project side of the road nor an accessible path from the public right-of-way (ADA accessible parking currently exists at the facility). If handicapped access from the right-of-way of Selman Drive is added to the project, it would likely involve ramping and retaining walls.

Currently, stormwater drains from the facility undetained to the right-of-way of Selman Drive. Given the impervious surface affected by the project is proposed to be less than 5,000 square feet, no stormwater management is proposed nor anticipated for the project. Proprietary water quality treatment devices are not proposed but could be required during project permitting.

Site

See schematic site plan ATTACHMENT A for proposed pavement remediation, building addition, and access improvements.

Water and Sewer

Improvements include potential new fire protection water service. The existing 8-inch water main along Selman Drive is assumed to be adequate. All new building sanitary sewer is expected to be serviced by the existing 8-inch sanitary sewer stub.

Erosion Control

Erosion control will be provided per the Manual for Erosion and Sediment Control in Georgia.

Landscape

The proposed landscape will meet the requirements of the City’s landscape ordinance. Street trees and shrubs are anticipated along the ROW of all three roads. Parking lot islands will have shade trees.

Street Frontage: All portions of a required frontage landscape strip shall be planted in trees, shrubs, grass or ground cover. Trees shall be provided within the frontage landscape strip at the rate of 1 tree unit for every 60 feet of street frontage, or portion thereof (excluding driveways). Shrubs are to be provided within the frontage landscape strip at the rate of 10 shrubs for every 60 feet of street frontage, or portion thereof (excluding driveways).

• Selman Drive: 170 LF (3 trees and 29 shrubs required along Selman Drive frontage)

Perimeter: Trees shall be provided within the side or rear yard landscape area at the rate of at least 1 tree unit for every

60 feet of length or portion thereof, or the side yard landscape strip may be planted in a continuous hedge

(penetrated only by approved access drives and utility easements).

• North: 215 LF (4 trees required)

• East: 732 LF (13 trees required)

Parking: Shade trees (deciduous overstory trees) shall be provided within or immediately adjacent to and surrounding the parking lot at a ratio of at least 0.3 tree units for every 8 parking spaces, or portion thereof.

• 56 parking spaces: 2.1 tree units required = six 3” caliper trees (3” caliper tree = 0.4 tree units)

Parking lot screening: A hedge consisting of at least a single row of shrubs planted 3 feet on center that will spread into a continuous visual screen within 2 growing seasons, berm, wall, decorative fence, or a combination.

Residential Buffer: When any commercial, industrial or office zoning district (as identified on Table 2.1) abuts a residential district, a natural zoning buffer 50 feet deep at a line where the two districts abut will be required. Natural buffers shall be supplemented with native plantings when the natural buffer does not provide a minimum of 80% opacity between the proposed use and the adjacent residential district. These plantings shall include a mixture of canopy trees (50% must be evergreen), understory trees, evergreen coniferous trees and shrubs. Canopy trees shall be no less than 3 inches in caliper and no less than 15 feet in height at the time of planting with a mature height of no less than 25 feet.

Structural Narrative Existing Building Conditions

Please see the attached proposed demolition plan (ATTACHMENT B) which breaks the existing building into two different structural systems. The original construction including the main entry appears to be a precast double-tee roof structure supported on a combination of a steel frame and load bearing CMU walls.

The adjacent addition appears to be a bar joist and steel beam structure with conventional metal deck.

We recommend a secondary visit after existing ceilings have been removed and prior to removal of any interior partition work to confirm the layout of interior load bearing supports and whether they will impact the proposed demolition of the interior partitions.

Foundations & Slab on Grade

Provide a 4” normal weight concrete slab of grade on a 10-mil polyethylene vapor barrier on a gravel subbase on grade. Subgrade stone requirements will be as recommended by the geotechnical engineer. Provide flat sheets of welded wire fabric 6”x6” – W2.9xW2.9 1” clear top.

Saw cut joints shall be provided at a spacing not to exceed 12ft x 12ft or a ratio of 1.5 to 1 with the maximum length being 12ft.

Slab shall be isolated from the exterior walls and steel columns by way of an isolation joint. This will be confirmed by the recommendation of the geotechnical report.

Building Foundations will be supported on shallow spread footings based upon an allowable bearing capacity to be given by the geotechnical engineer. All foundations shall bear a minimum of 2’-0” below exterior grade. At the perimeter of the building, a continuous reinforced wall footing should be provided. Width to be determined by the load and allowable bearing capacity.

Structural Frame

The structural frame shall consist of steel columns at a nominal spacing to work with the architectural layout of the proposed space. Steel tube post will be utilized. The roof will be framed with W section beams which will support bar joist spaced at approximately 6’-0” on center. The roof deck shall consist of 1-1/2”, 22-gauge wide rib type B galvanized deck. Deck shall be fastened to structure based upon a 36/4/4 pattern.

A new canopy will be provided with the structural frame consisting of two steel columns at the edge of the canopy closely spaced. The roof will be framed with W section beams. The canopy roof deck shall consist of 1-1/2”, 22-gauge wide rib type B galvanized deck. Deck shall be fastened to structure based upon a 36/4/4 pattern.

At this time, we do not know if roof screens will be required to screen the new roof top units.

Lateral Resistance Design

The new steel system will be designed with the use of diagonal steel bracing in each direction, or in combination with the use of either steel knee braced frames or moment frames. Lateral design will be in accordance with the required wind and seismic design. The following are preliminary values collected based upon the project location.

Design criteria based upon ASCE hazard tool Risk Category III Ultimate Wind Speed = 114 mph

Assumed Seismic Site Class = D Seismic Design Category = C

Exterior Building Construction

The exterior of the building will be constructed with the use of cold formed metal framing with the exterior finish being as directed by the Architect.

Miscellaneous Steel

At roof drain locations, provide misc. steel angle frame to support the drain between steel joist. At all new roof top equipment, provide a steel channel frame or equivalent angle frame to support the curb of the units between the roof bar joist. Based upon the location of the steel column to the exterior metal stud wall, there are two scenarios which should be considered concerning the misc. steel. Please see the outline below.

If the steel column support is pulled within the space allowing the metal stud to extend clear of the roof structure, the following would be considered.

1. Provide a 4” x 3”x ¼” cont. angle long leg vertical. Stitch weld to top chord of each roof joist. Provide a metal stud slip clip connection between the vertical metal stud at 16” on center.

2. Provide an angle brace 2” x 2” x 3/16” from the top of the bottom flange of the roof beam at the joist closest to beam midspan extending diagonally up to the top chord panel point of the joist.

If the steel column support is placed within the thickness of the exterior metal stud wall, the following would need to be considered.

1.Extend the new steel column up to the top of the proposed parapet.

2.Provide a steel channel at the top of the parapet to span between the steel columns.

3.Provide a 3” x 3” x 3/16” cont. angle with the vertical leg placed ½” from the exterior face of the metal stud.

Field weld to the top chord of each intersecting bar joist.

4.Provide an angle brace 2” x 2” x 3/16” from the top of the bottom flange of the roof beam diagonally up to the top chord panel point of each roof joist.

Reference ATTACHMENT B for Additional Structural Considerations.

Mechanical, Electrical, Plumbing, and Technology Narratives

Project Scope

The project consists of a major renovation to the Cobb and Douglass Co. Public Health Department located in

Douglas County, Georgia. The building’s estimated construction date predates 1980 and could possibly be built in the

1970’s. There are no existing drawings and information in this narrative was provided by the owner and the site visit.

Given the age of the building, TLC assumes that asbestos and other hazardous materials are present in the building.

The scope of work consists of MEP/T renovation of the existing 12,000 SF area of the building with an addition of 4,600

SF.

Codes and Standards

• 2024 International Building Code with GA amendments,

• 2024 International Fire Code with GA amendments,

• 2024 International Plumbing Code with GA amendments,

• 2024 International Mechanical Code with GA amendments,

• 2023 National Electric Code with GA amendments

• NFPA 101 Life Safety Code with State amendments

• Georgia Accessibility Code, 120-3-20

• 2015 International Energy Conservation Code with GA Supplements and Amendments

• 2024 Existing Building Code, with GA Amendments

MECHANICAL

Design Conditions:

TLC has selected the ASHRAE weather data from West Georgia, due to comparable elevation, latitude, and population density. Equipment sizes described were determined using these design conditions:

Design cooling: 1% design day with dry bulb/wet bulb temperatures of 91°F and 74°F. Design heating: 99% condition, outdoor temperature of 25.4°F.

Indoor temperatures: 74° Cooling, 70°F Heating

Some spaces in this project are covered by FGI/ASHRAE 170 section 8 and TLC has included sufficient airflow to meet the minimum air change values for those rooms. Spaces not described in FGI/ASHRAE will be designed for comfort cooling and use ASHRAE 62.1 for outdoor air quantities.

All ductwork shall be sheet metal, installed per SMACNA and insulated per 2015 IECC.

Existing conditions:

The northwest area is conditioned by five (5) gas-fired roof top units (RTU). Information from the owner is sparse and summarized below:

The southeast area is conditioned by five (5) split system heat pumps with gas furnaces. A sixth system conditions the

IT room.

TLC has run a preliminary load and the existing systems should be sufficient to condition the renovated layout.

All existing systems appear to be constant volume and controlled by local thermostats.

Bathrooms exhaust is with a mixture of ceiling and roof mounted fans.

Renovation Area Work:

Prior to construction, perform test & balance on each existing system to verify if the systems are functioning at nameplate capacity.

Demolish air distribution and flexible duct. Roll up thermostats and protect for reinstallation. Modify duct runouts and trunk lines as required for new layout. Clean existing supply and return ductwork prior to new air distribution install.

Provide new supply, return, and exhaust grilles to match the new layout and connect to the existing duct mains. If the existing area uses a plenum return, provide a lined sound boot at each return and/or transfer grille.

Existing exhaust systems and ductwork will remain in place. Check systems for leaks and repair/seal.

Provide an add/alternate price to relocate the IT room indoor unit.

New Work:

In the southeast expansion area provide heat pumps with natural-gas furnaces for secondary heating. Indoor units will be in vertical configuration, located in the mechanical room. Each new system shall be controlled by a 7-day programmable thermostat, secured behind a lock-box. Approximate zones, equipment style, and tonnage are listed in this table:

Provide each indoor furnace with a combination intake/vent, routed up through the roof. Provide outdoor air intake louvers in the mechanical room wall. Outdoor air shall be ducted to each unit’s intake plenum. Provide each unit with manual volume dampers to balance return air and outdoor air. Outdoor air dampers shall be interlocked with the fan motor and close when the fan is off. Assume the mechanical room is rated and provide fire dampers at each duct penetration. Locate the outdoor units behind the staff restrooms.

Provide new supply ductwork, sized at 400 CFM per ton. Assume 2x2 air distribution except in the Vestibule and

Lobby/Waiting areas, which shall have slot diffusers along the windows. Provide cable dampers for slot diffusers and manual volume dampers with standoff brackets in other areas. These systems will utilize a return air plenum. The return air path back to each unit shall be verified to be clear in order to provide a path for return air to each unit. Walls to structure shall be provided with lined return air boots. The space above the ceiling must be treated as a return air plenum, with all materials rated appropriately.

Provide exhaust fans for these new areas as listed below. Restroom fans shall be interlocked with lighting control. The

Isolation Room, Lab, and General exhaust fans shall be constant volume.

Exhaust fans shall be located at least 25 feet from any air intake.

Provide a pressure indicator next to each door of the negative pressure anteroom, ADI-69- V or similar.

Provide a gas-fired unit heater in the sprinkler riser room for freeze protection.

Test and balance all areas at project completion. Coordinate with the commissioning agent to support their activities.

ELECTRICAL

The building is currently serviced by an overhead pole mounted 112.5 kVA service. The overhead service feeds (1)

800A 120/208V ATS which feeds the entire building. There is an 800A 120/208V switchboard located in mechanical room 2 which distributes power to the rest of the building’s panels and panel LPC which is located in the storage building. The storage building shall be existing to remain in this scope.

The remaining existing panels in this project are as follows:

• Panel LPA 125A mlo

• Panel LPB 125A mlo

• The switchgear and panelboards in mechanical room #2 are Siemen models installed in 97/98.

• Panel 1 150A mlo

• Panel 2 150A mlo

• Panel 3 150 A mol (out of service)

• The panel boards in mechanical room #1 are Square D models and appeared to be in working order but at the end of their useful life.

The useful lifespan for gear and panels is typically 30 years. Aged equipment may be discontinued, or parts may be difficult, if not impossible, to replace. TLC recommends replacing the switchgear and panelboards.

Exterior lights are aging and are inadequate for the area. It is recommended to replace the existing fluorescent lighting with LED lighting and add additional exterior lights to meet code minimum requirements. Interior lights appear to be in good working order. It is recommended to replace any fluorescent lights with LED lights.

The locations of smoke and heat detectors throughout the building generally matched the original design. It is recommended to replace any that is over 10 years old.

Currently, existing receptacles do not have USB ports, so it is recommended to replace receptacles that are adjacent to workstations and seating areas with receptacles that have USB-A and USB-C ports. In general, receptacles were in good condition, so if the receptacles were otherwise working, it is not necessary to replace them all.

The existing Generac generator is a 130KVA natural gas which is good for approximately 450A. It is anticipated that the existing generator will be sufficient to incorporate the loads of the new building. However, it is recommended to get peak demand loads from the utility company for the last 2 years to confirm that the generator will be sufficient.

It is anticipated to demolish panel LPC. The equipment in mechanical room 1 is anticipated to be replaced is listed below:

• Panel 1 – 150A MLO

• Panel 2 – 150A MLO

• Panel 3 – 150A MLO

New exterior lighting shall be added, including new lighting under the canopy at the entrance and additional light poles in the parking area. Existing fluorescent lights in both the interior and exterior shall be replaced with LED lighting.

Exterior lighting for both new and existing lights shall be controlled by photocell with a time clock override.

On the B side expansion, new interior lights shall be controlled as listed below:

• Interior rooms with no window – wall mounted occupancy sensor o Exception nurse’s station shall have ceiling mounted occupancy sensor

• Interior rooms with natural daylight – wall mounted vacancy sensor

•Corridors shall be controlled by interior lighting contactor on a time clock with local switching overrides.

With the addition to the size of the breakroom, additional power is anticipated. It is anticipated to have enough space in the existing panels to accommodate moderate additional electrical loads such as coffee makers, an icemaker, and 2 microwaves.

Receptacles throughout shall be replaced. Receptacles near seating or computers shall include a USB-A and a USB-C port to accommodate mobile charging.

It is also anticipated to add the following panels to the project “B side (new expansion)” building:

• (1) 150A panel with MCB with sub feed lugs (42 circuit)

• (1) 150A panel MLO that is sub fed from the panel listed above. (42 circuit)

Fire Alarm

Fire alarm scope shall be as follows:

• New fire alarm devices shall be installed on the “B side (new expansion)” of the project scope. Additional devices shall match the existing devices existing to remain on the “A side” of the project scope.

PLUMBING

The domestic water heater is an AO Smith – BTR-199 118 gas fired storage tank type with 199,000 MBH input and 81 gallons of storage. The water heater was manufactured in 2019. The water heater will need to be existing to remain and serve the existing building.

The domestic hot water recirculation pump is an Bell & Gossett NBF-22 103252LF, 92 Watts 80 Amp. The estimated age is 7 years old. The circulation pump will need to be relocated with the water heater.

The existing gas meter is an AL-1000 and is located outside near the emergency generator rated for 1000CFH at 1/2" of water column pressure loss. The building is served with a gas PRV set to around 12 inches of water column.

The emergency generator is natural gas fired and served from the existing gas meter with a 5psi line.

There are no plumbing drawings to know how the underground sanitary exits the building. The Civil site plan however show the sanitary exit near the generator and running toward the street.

The existing domestic water backflow preventer at the street is located in a hot box. And the water enters the mechanical room near the emergency generator, with a 1-1/2” domestic cold water service and flow through a 1-1/2”

Watts PRV. The water gauges on the water service line show the entering water pressure at around 25 psi which is very low water pressure. The water pressure is almost two low to operate flush valves on the water closets.

The existing 1-1/2” water service is not large enough to feed the new building and the existing building.

Existing water closets are floor mounted and flush valve. The existing lavatories are self rimming china with manual single level faucets.

The existing water fountain is an Elkay single level with sensor bottle filler. The breakroom sink is drop-in and manually actuated with swing spout.

Access to the roof was not available.

Demolition:

The existing water service, water heater, and piping shall be removed. The plumbing fixtures shall be demolished and replaced with new as shown on the floor plans. Locations where fixtures are removed, the water mains shall be removed back to nearest active water and capped at the main to reduce dead leg length to less than 4”. The sanitary waste and vent shall be capped at removed fixture and can be abandoned in place.

Plumbing Fixtures

1. All plumbing fixtures for public occupancies shall be commercial grade. Accessible fixtures shall be provided as specified by building code.

2. Water closets shall be wall mounted vitreous china with sensor flush valves, designed for 1.28 gallons per flush.

3. Urinals shall be wall-hung, vitreous china with sensor flush valves, designed for .5 gallon per flush.

4. Lavatories shall be vitreous china; countertop, drop-in type or wall mounted with ADA approved trim.

Faucets shall be single lever type with 0.5 gpm discharge.

5. Breakroom sinks shall be stainless steel; countertop mounted utilizing single lever faucet with 1.5 gpm discharge.

6. Electric water coolers with bottle filler shall be self-contained units with bi-level dispensers meeting ADA mounting requirements.

7. Mop sinks shall be floor mounted cast stone units with stainless steel wall mounted splashguards and wall mounted faucet set.

Domestic Water Services/Water Distribution and Phasing of the Domestic Water

1. The existing 1-1/2” CW service serving the building is not large enough to serve the new work area and the existing service. The plan for domestic water is to provide a new 2-1/2” domestic water service, with a 2” water meter to enter the existing building in the existing mechanical room where the 1-1/2” water service was demolished.

2. The existing building will continue to operate and serve patrons while the new building is under construction. Once the new building is operational and the domestic water is active and in service, the old building will be renovated while patrons use the new area of the building to allow for continuous service throughout the project.

3. The new 2-1/2” water service will then connect to the exiting 1-1/2” water line that was cut, and will back feed the existing system. And the new 2-1/2” will serve the new addition.

4. The domestic water piping system shall be distributed to various pieces of equipment and plumbing fixtures through an adequately sized system of type L copper and fittings. Domestic water piping system shall be sized using 3psi / 100 ft uniform friction head loss criteria. The piping system velocity shall not exceed 8 fps (Feet per Second), in order to reduce pressure drop, noise and water hammer. Mechanical room with AHU equipment shall have hose bibs provided.

5. Trap primers shall be water supply fed type and connected where a 10 psi pressure drop occurs. Trap primers in mechanical rooms will be electronic type.

6. Water hammer arrestors shall be provided on both hot & cold-water piping.

7. The existing storage type water heaters from 2021 shall be existing to remain and appear to have sufficient capacity to serve the existing building and the new load of the new building. Hot water shall be stored at 120°F and distributed at 105°F to all plumbing fixtures requiring hot water in public areas.

8. Reuse existing domestic hot water recirculating pump and recirculating system.

9. Hot water for shall be stored at 140°F and distributed at 105°F to all plumbing fixtures. A master thermostatic mixing valve to maintain hot water delivery in all areas. All hot water and recirculation piping shall be provided with fiberglass thermal insulation.

10. Domestic hot water circulating system shall be extended to within 2 feet of public lavatories as required by the energy code.

Sanitary Sewer, Vent & Condensate Drain Piping

1. Building to be provided with traditional waste and vent system.

2. The below ground sanitary sewer system shall be constructed using. Solid-Wall PVC Pipe: ASTM D 2665, drain, waste, and vent. PVC Socket Fittings:

ASTM D 2665, made to ASTM D 3311, drain, waste, and vent patterns and to fit Schedule 40 pipe

3. There are some areas of the building designed to be return air plenum on the HVAC plans, these areas shall not have plastic piping above ceiling in the plenum and shall be piped with metallic Vent piping. Provide cast iron vent piping in return air plenums.

4. The above ground sanitary & vent system (in areas that are not return air plenum) shall be constructed using service Solid-Wall PVC Pipe: ASTM D 2665, drain, waste, and vent. PVC Socket Fittings: ASTM D 2665, made to

ASTM D 3311, drain, waste, and vent patterns and to fit Schedule 40 pipe.

5. Condensate drain piping shall be of the same materials utilized for sewer and vent piping.

6. All above ground sanitary piping serving mechanical room floor drains shall be insulated with elastomeric.

7. Cleanout shall be provided as required per code and at the base of all stacks.

8. Sanitary piping will connect to the existing system where the existing sanitary piping exits the building.

9. The new vent piping shall connect to the existing vent through roof piping to reuse the existing vent through roof locations.

FIRE PROTECTION

The building is not sprinklered.

The new and existing building shall be 100% sprinklered in accordance with all current NFPA codes. The scope of work for this project shall include providing a complete and operable wet pipe system. The entire building shall be provided with pendent sprinklers in areas with ceilings and upright sprinklers in areas without ceilings. Sprinklers within special areas shall be laid out in accordance with the spacing criteria as set forth by NFPA 13 for each occupancy classification.

2. Sprinkler System Design Criteria:

a) Occupancy Classification: Light Hazard

i) Density: .10 gpm/sq. ft.

ii) Hydraulic Remote area: 1,500 sq. ft.

iii) Outside Hose Stream Allowance: 100 gpm

iv) Duration of Supply: 30 min.

v) Max. Coverage per Sprinkler: 225 sq. ft.

b) Occupancy Classification: Ordinary Hazard Group I

i) Density: .15 gpm/sq. ft.

ii) Hydraulic Remote area: 1,500 sq. ft.

iii) Outside Hose Stream Allowance: 250 gpm

iv) Duration of Supply: 60 - 90 min.

v) Max. Coverage per Sprinkler: 130 gpm

c) Occupancy Classification: Ordinary Hazard Group II

i) Density: .20 gpm/sq. ft.

ii) Hydraulic Remote area: 1,500 sq. ft.

iii) Outside Hose Stream Allowance: 250 gpm

iv) Duration of Supply: 60 min.

v) Max. Coverage per Sprinkler: 130 sq.

3.Principal occupancy classifications are light hazard and ordinary hazard. Listed below are the classifications with examples of common occupancies listed under each. The basic hazard classification of occupancy does not define the fire hazard present in all areas of that occupancy. If more hazardous processes or areas exist within a given occupancy, protect these areas in accordance with the fire protection requirements pertaining to the hazard classification of that area. Determine the classification for unlisted occupancies from the definitions or by comparison with one of the listed occupancies.

a) All public spaces & offices shall be considered Light Hazard.

b) All mechanical rooms, electrical rooms, telecom rooms, and data center shall be considered Ordinary

Hazard Group I.

c) Large stack rooms, if provided, shall be considered Ordinary Hazard Group I.

Sprinkler System

A. Provide a wet pipe sprinkler system in all interior areas. Loading docks and other areas exposed to freezing conditions will be provided with a dry-pipe sprinkler system.

B. Sprinkler heads shall be quick-response, standard spray sprinkler heads with a K-factor of 5.6. Sprinkler heads shall be concealed, upright or sidewall type sprinkler heads.

TELECOMMUNICATIONS

Electronic systems

Telephony Equipment – The telephone switch and associated electronic equipment is existing. All new cabling and work area outlets required to support the telephone system will be provided by the selected structured cabling contractor.

Network Equipment - Local Area Network (LAN) electronic equipment, including but not limited to, firewalls, routers, switches, and wireless access points will be provided by the Owner.

Audio-Visual Equipment – A/V equipment, including but not limited to, displays, televisions, projectors, projector screens, and A/V control systems will be provided by the Owner.

Communications Systems - All communications systems for the building shall be readily available equipment and systems. The focus of all communications system designs shall be the convenience and reliability for the end users and visitors.

Physical spaces

Telecommunications Room (TR) - A new TR will be constructed. This room will contain all incoming service provider connections and associated equipment, head-end equipment for Owner’s telephony and network equipment, voice/data horizontal cabling and associated termination hardware and other low voltage system equipment and enclosures as needed.

Physical requirements provided for all TDRs include:

• Exposed ceilings

• 3’-0” x 80” door, preferably opening outward

• Grounding bus bar with 2/0 bonding cable to telecom grounding system.

• ¾” plywood, 8’ high, on all walls.

• One set of 4-inch vertical conduits or 4-inch STI EZ-Path floor penetrations to adjacent TDR rooms on floors above and/or below.

• One set of (3) 4-inch STI EZ-Path horizontal wall penetrations.

The following structured cabling equipment will be provided at each TDR by the structured cabling contractor:

• A minimum of (2) floor mounted, 2-post equipment racks with complete vertical and horizontal wire management.

• Rack mounted fiber optic distribution cabinet.

• Rack mounted CAT-6 & 6A patch panels for horizontal workstation cabling.

• Cable runway above racks.

Grounding System - An ANSI/TIA 607-D compliant telecommunications bonding and grounding system will be designed and installed to provide a consistent grounding reference and bond path for the new telecommunications room.

Pathways

The infrastructure to support the cabling installation and the required power connections will be provided by Division

26 based on the requirements of Division 27 and 28 plans and specifications.

Horizontal Pathway – The majority of the horizontal cabling will be distributed over existing able tray systems or newly installed J-Hooks, spaced 5’ on center. From the J-hooks to the workstation outlet, cables will be installed in 1” conduit. Furniture clusters isolated from walls will be fed using floor boxes or a poke-thru from the floor below. In hard or open ceiling areas, only conduits will be allowed, no J-hooks or cable trays permitted.

Structured Cabling System

The structured cabling to support voice and data connectivity will be provided by an owner approved structured cabling contractor.

Workstations - For enclosed offices and other staff areas, outlets will be terminated in a standard 4” square box, wall mounted flush @ 18” AFF, single gang plaster ring and one inch conduit to above the ceiling. Countertop outlets will be located 4” above the counter or back splash. Where open furniture systems are installed, cables will run in furniture provided raceways, connected via floor boxes or wall mounted outlets. Furniture systems shall have a divider for separation of voice/data cables and power cables. Network outlet faceplates in furniture systems shall be manufacturer provided plates to fit the furniture raceways.

Horizontal Cabling - (2) 4-pair CAT-6 cables will be provided to all workstation outlets. At high use locations, such as a nurse station, additional cables will be provided to workstation outlets. Other locations will receive a quantity of cables as required.

Wireless Network System - Wireless Access Points (WAPs) shall be cabled horizontally from the TDRs out to WAP locations on each floor. It is expected that the Owner’s IT department or owner’s hardware vendor will supply wireless network heat mapping to determine the exact location of WAPS. For pricing, TLC will preliminarily locate WAP locations utilizing industry standard spacing and density coverage for 100% building coverage. WAP devices shall be provided by the Owner and installed by the Technology Contractor.

Cable System Administration – Administration and labelling of the structured cabling system will follow ANSI/TIA-606-

A standards and any Owner established labeling practices. All cables shall be labeled at each end with machine generated, self-laminating labels.

Warranty - Five years of warranty on materials and labor and twenty years of warranty for the specified and tested system performance will be required for the structured cabling system.

Other Systems

Broadband Distribution - A broadband video distribution system (also known as CATV) is required to distribute commercial television signal areas where TVs are required by Owner.

The following elements will be designed for this system:

• One (1) coaxial cable (RG-6) to each TV outlet.

• CATV distribution hardware in all telecom rooms to feed TV outlets in the vicinity of the telecom room.

Audio-Visual Systems - Infrastructure (wiring and power) will be provided in all public spaces, and meeting spaces for

A/V equipment. This equipment includes but is not limited to:

• Televisions

• Digital signage

• Interactive displays

• Sound systems

• A/V controls

• Video conferencing systems

Overhead Paging System - The overhead paging system will be an expansion of the existing paging system. Additional speakers and amplifiers will be provided as required. Speakers will consist of ceiling mounted speakers located in lobbies, corridors, and other areas designated by the Owner.

Access Control System - The access control system will be an expansion of the existing access control system, including distributed access control panels, low voltage power supplies, card readers, duress buttons, door position switches, motion sensors, magnetic locks, door release buttons and intercom door stations and master stations.

Electrically locked doors in the means of egress will have a fire alarm interface for automatic release as required by

NFPA 101. Interface capabilities to the video surveillance system will be provided for camera activation under alarm conditions. All access control wiring will be installed in conduit. Coordination will be required for accessibility to this raceway system.

Video Surveillance System – Surveillance video cameras will have IP capability and will be provided and programmed by the Technology Contractor. Each camera location will require a network connection which will provide PoE to the camera; at interior camera locations, no electrical receptacles are required. At external pole-mounted camera locations, unswitched 120v power will be required. Monitoring will be accomplished by network connected computers. Interior video surveillance will be provided for major public areas, such as lobbies, waiting rooms, and corridors. Exterior video surveillance will be provided to cover building entrances, parking lots and other areas as directed by the Owner.

Panic and Duress Alarms - Panic and duress alarms will be provided at the administration areas dealing with the public and other areas designated by the Owner. These alarm points will interface with the security system and will be monitored by the Owner’s security personnel and via video surveillance if desired.

DAS System - Public Safety – Local and national building codes require all new buildings to comply with minimum signal levels for public safety radio communication systems. A performance-based specification will be included for testing to determine if this type of system will be required inside the facility based on the signal strength of public safety radio repeaters near the project site. If it is deemed that a system is required, a distributed antenna system will be provided per the specification. The design and installation of the DAS system shall be by licensed and certified radio installers.

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+/-16,000 SF MILL / OVERLAY OR SEALCOAT

EXISTING ASPHALT PAVEMENT

+/-4,992 SF BUILDING EXPANSION

AND SITE MODIFICATIONS

EXISTING PUBLIC LIBRARY

EX…