Attachment 3b - Harris Drawings Addendum 90 Percent.pdf

Petersburg Office Consolidation & Work Center Replacement

Harris Building - 90% Draft Construction Documents :: Drawings Addendum

HARRIS BUILDING

90% DRAFT CONSTRUCTION DOCUMENTS

DRAWINGS ADDENDUM

07.17.2024

07.17.2024 Harris Building - 90% Draft Construction Documents :: Drawings Addendum

Petersburg Office Consolidation & Work Center Replacement

GENERAL:

Drawings depicting the following requirements will be provided with the 100% Construction Documents, and will replace this addendum.

All quantities are approximate.

SITE DEMOLITION:

• Remove and dispose of one (1) flammable liquid storage building. Storage building is a steel shipping container-shaped structure with an approximate size of 8 ft x 25 ft.

SITE WORK:

• Provide new reinforced concrete pavement area at east side of building adjacent to building entrance:

o Clear existing landscaping o Excavation (18” maximum): 100 CY o NFS Subbase Fill (8” thick): 33 CY o Base Course (4” thick): 16 CY o Reinforced Concrete Paving: 1,300 SF o Cold Patch Asphalt (1’ wide): 1,210 SF o Tack Coating as required

• Underground utility trench (1’ wide x 3’ depth): 75 LF o Backfill trench and repair surfacing with cold patch asphalt product.

• Furnish & Install one (1) new Flammable Liquid Storage Conex; 100 SF Unit

• Construct new gravel surface pathway connecting existing pathway to new door and landing on north side of building o Clearing and grubbing: 340 SF o Organics Excavation (6” maximum): 2.5 CY o Surface Course: 2.5 CY

STORM DRAINAGE IMPROVEMENTS:

• Linear grading of a new swale along west side of building to facilitate stormwater drainage:

80 LF

• Furnish & Install PVC 12” Drain Basin with Dome Inlet Lid at south end of new swale at west side of building

• Furnish & Install Culvert Pipe; Connect CPEP from drain basin to planned stormwater catch basin located within the upcoming south parking lot expansion area.

o 12” CPEP: 30 LF

WASTEWATER SYSTEM FOR OUTDOOR WASH STATION:

• Furnish and install HDPE sump basin unit adjacent to converted wash station shed o Sump unit minimum capacity shall be 14 gallons o Sump unit shall incorporate water tight o Connect sink drain to sump pit w/ 2” PVC SCH 40 piping o Furnish portable electric slurry pump unit with float switch

▪ Slurry pump shall be submersible

▪ Minimum solids passage size rating of 9mm

▪ Minimum discharge bore rating of 50mm

▪ Furnish two (2) flexible 2” diameter hose units with aluminum camlock fittings compatible with furnished pump; 50’ length each hose.

• Hose shall be nitrile rubber material

LANDSCAPING

• Topsoil & Seeding (or placement of salvaged grubbed organic soils) for revegetation of all disturbed areas.

STRUCTURAL

Replace two existing timber columns in the shop area with two new 8.75”x9” 24f v8 glulam columns.

Provide a seismically separate canopy at the new entrance on Grid J. Canopy foundation: Provide concrete sonotube piles. Canopy posts: Provide four 4x4 timber posts set in the concrete piles. Span the columns with 4x8 timber beams. Support the metal roof with 2x8 timber joists set on top of the beams at 16” o.c.

MECHANICAL

Basis of Design Manufacturers

AC Units – Mitsubishi Exhaust & Other Fans – Greenheck Louvers – Ruskin

Plumbing

Plumbing Piping:

1. New outdoor sink at the bike shed: Large, single compartment, stainless steel sink, with integral drain board on one side, and faucet. Waste discharge to be a straight pipe out of the sink drain and elbowing to the right with a short horizontal run of indirect waste piping for discharge into a bucket or sump. No P-trap on the drain. Sink provided with cold water (CW) only faucet, fed via a hose for a temporary seasonal connection. See next item.

2. New CW hose bibb, freezeless type, on the back of the building, dedicated to supply CW the sink.

3. New CW hose bibb, freezeless type, on the back of the building for general outdoor use of a hose.

4. Relocate plumbing piping for the level 1 restrooms out of the exterior wall. See specifications on Drawing Sheet A0.03.

HVAC Systems

1. New exhaust ventilation system for the Garage. System includes 2 intakes close to the floor, metal ductwork, inline exhaust fan, and exhaust louver. Louver to be located high on the exterior wall above the existing mechanical addition housing the two heat recovery ventilators.

2. New makeup air system for the Garage. System includes an intake louver, mixing box, O/A and R/A control dampers, inline supply fan, and metal ductwork. Intake louver to be located above the exterior man door adjacent to the overhead door.

3. New electric unit heater in the Garage.

4. New split system AC unit for the new IT room. System will be a Mitsubishi Mr. Slim, or similar, with the condensing unit located within the adjacent shop area for a simple way to recover the heat and not waste it outdoors.

ELECTRICAL

Site Electrical

1. Demolish existing conduit, conductors and receptacle currently feeding paint storage locker back to panel P2.

2. Provide new conduit, conductors and in-grade junction box to re-power existing paint storage locker and new flammable materials storage locker. Lockers to be fed from panel P2.

3. Provide new LED lighting above new exterior door at Grid J.

4. Provide wet listed LED strip lights and three GFCI receptacles to existing outdoor shed on west side of building. Conduit and conductors to be routed to new panel P5 provided in accordance with item 7 below.

Electrical Service and Distribution

1. Provide new small 100A, 208V, 3 phase, branch circuit panel, “P5”, in new garage area provide feeder from existing panel P2.

2. Provide connections to garage and telecom room mechanical equipment from new panel P5.

Connections include new exhaust ventilation system, new makeup air system, new electric unit heater, and new split system AC unit.

3. Provide approximately eight (8) GFCI receptacles mounted at 24 inches above finished floor, and six (6) GFCI receptacles mounted at 48 inches AFF in garage, and connect to new panel P5.

4. Provide approximately six (6) receptacles in new telecom room for connection to telecom rack and relocated telecom equipment.

Lighting Systems

1. Demolish existing lighting in telecom room and storage space designated for new garage.

2. Provide new LED pendant mounted strip lighting in new telecom room and garage.

Special Systems

1. Demolish existing telecom cabling throughout facility.

2. Provide new CAT 6 telecom outlets and cabling to approximately twenty-four (24) locations throughout the facility.

3. Provide new CAT 6A ceiling mounted telecom outlets and cabling to approximately twelve (12) locations for owner furnished contractor installed wireless access points throughout the facility.

4. Provide new CAT 6A cabling to four (4) existing to remain surveillance cameras.

5. Extend existing utility fiber optic cabling and twisted pair to new telecom room.

6. Provide new two post rack with CAT 6 and CAT 6A patch panels in new telecom room.

7. Relocate existing security and PA equipment to new telecom room. Intercept, extend, and reconnect existing speakers and devices.