Location Coordinator:Contracting Officer Rep.:Contracting Officer:Engineering Project Manager:

Task

Order #:

Drawing Title:PROJECT TITLE:

FEU Project #:

Drawing Number:

Agricultural Research Service U.S. Department of Agriculture

NCAH

1920 Dayton Avenue Ames, Iowa 50010

Revision:

Client:

Sheet:

Designer:

Date:

Date:

Of

Katherine Madson TBD Tommy Walker

BUILDING 174

LP TO NATURAL GAS

TITLE PAGE

FOR CONSTRUCTION 6/26/2026

TOMMY WALKER 1

24004 ARU 1 9

Building 174 - LP To Natural Gas

1 TITLE PAGE

2 SITE GAS PIPE LOCATION

3 METER SET DETAILS

4 HEATER WORK - ANIMAL HOLDING AREA

5 RTU DEMOLITION

6 RTU INSTALLATION

7 RTU DETAILS

8 STATEMENT OF WORK

9 EQUIPMENT SCHEDULES

UNITED STATES DEPARTMENT OF AGRICULTURE

AGRICULTURE RESEARCH SERVICE

NATIONAL CENTERS FOR ANIMAL HEALTH

Sheet # Description

Job Location Bldg. 174

Drawing Title:

Drawing Number:

Sheet: of

SITE GAS PIPE LOCATION

2 9

1) Install an Underground Isolation Valve Assembly including: (qty-2) 2-inch lubricated gas plug valve rated for underground service at 175-psi, (qty-2) 5.25-inch standard configuration valve box with PVC pipe extension and screw type adjustments.

See Detail-1 on this page.

2) Install approximately 67' of 2" HDPE Fuel Line and locate/trace wire from existing 2" metal gas pipe, using factory-assembled HDPE-to-steel transition tee see IMAGE-4 and IMAGE-5 on drawing page 3 for references..

3) Remove existing propane fuel line and regulators from LP tanks and building service. See IMAGE-1 and IMAGE-3 on drawing page 3 for references..

4) Remove bollards from perimeter of LP tanks and remove from USDA location. LP tanks to be removed by USDA. See IMAGE-5 on drawing page 3 for reference.

5) Install 2" Anodeless Riser with 2" Riser shutoff cock, regulator, and meter set with pulser. See Detail-2 and Image-3 on drawing page-3.

Existing natural gas pipe. 35 psi

GAS

GAS

GAS

GAS

GAS

GAS

GAS

Existing 1" gas pipe shall be abandoned in place.

GASGASGASGASGASGAS

NEW 2-in HDPE Pipe to gas meter

Existing 2-in FNPT Gas Plug Valve

Existing 2-in Steel Gas Pipe

Cap pipe nipple end or plug end of valve for future connection.

Use approved pipe thread sealant rated for natural gas usage.

NEW 2-in Steel Gas Pipe. Lengths shall follow Best Practice Guidelines.

NEW 2-in FNPT Gas Plug Valve installed in Valve Box with 6-inches of 3/8-inch pea gravel underneath valve box for stability.

DETAIL-1

2-ft This is distance for beginning of NEW valve work.

Sheet: of

METER SET DETAILS

3 9

Anodeless Riser and Locate Wire

Riser Shutoff Valve Typical

Diaphragm Meter

Regulator to reduce pressure from 35 psig to 7 psig

Connect to existing Fuel

Line of Building174.

Meter Set Piping. Install Riser Post for support

Typical Diaphragm Meter Set Arrangement with pulser output

Ground Level

Remove propane supply line, regulator, supports to the existing building service in IMAGE-3

Connect meter output pulser to office/JCI controller.

G A

S

G A

S

GAS

Remove LP regulator with items in IMAGE-1.

GAS GAS GAS GAS GAS GAS GAS

Entry location for meter pulser, BACnet communications conduit.

Existing gas valve

View from building 174 to the northExisting LP line and regulator service

G A

S

G A

S

GAS GAS GAS

Building 174

E xi st in g 1" n at ur al g as p ip e existing propane fuel tanks

Meter set & regulator location

Refer to RTU DEMOLITION DRAWING Page 5 in this drawing for ductwork and RTU installation work.

Detail - 2

IMAGE-1 IMAGE-2

IMAGE-3 IMAGE-4

IMAGE-5

G A

S

G A

S

NEW gas valve to be installed here

N E

W na tu ra l g as p ip e

G A

S G

A S

View from gas valve south of building 174 to the north

Bollards to be uninstalled and removed from USDA site.

New 2" Gas Pipe

New 2" Gas Pipe

Sheet: of

HEATER WORK - ANIMAL HOLDING AREA

4 9

4" EXHAUST VENT

THROUGH ROOF

4" EXHAUST VENTS

THROUGH ROOF 4" EXHAUST VENTS

THROUGH ROOF

4" EXHAUST VENTS

THROUGH ROOF

4" INTAKE VENT

4" INTAKE VENT

RTH-1

RTH-2

RTH-3

RTH-4

1/2" DN TO RTH 1/2" DN TO RTH

1/2" DN TO RTH

1/2" DN TO RTH

3/4" 3/4" 1" 1 1/2" 1 1/2" 3/4"

3/4"

RTH-1

RTH-2 RTH-3

RTH-3

RTH-5

Relocate thermostat to use with HH-1

HH-1

RTH-5

G A

S G

A S

G A

S G

A S

G A

S G

A S

G A

S G

A S

G A

S G

A S

G A

S G

A S

G A

S

RTH-5

3/4"

G A

S G

A S

G A

S

GASGASGASGASGASGASGAS GAS GASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGAS

1) Remove RTH-1, -2, -3, -4 including intake/vent pipes. Install new radiant tube heaters with pressure regulators, shutoff valves and intake/vent pipes with caps. Reuse existing electrical wires and thermostats. Contractor shall mount units at the existing height using the existing methods for attachments.

2) RTH-5 and its thermostat, conduits, and wires shall be removed. Reusing existing thermostat. Remove existing intake/vent for RTH-5, fill hole with submitted and approved fire caulk/sealant install sheet metal patch and seal holes in the interior and exterior of wall and roof. Sheet metal patches shall be coated with red “rust” colored primer. Remove wires back to main breaker panel and conduit back to nearest junction box and plug the hole.

3) Install new hanging heater (HH1) in approximate location depicted in this drawing. Exact location and height shall be coordinated with th COR.

4) Leak test new and existing piping connections. Any any deficiencies identified shall be reported to the COR.

Heater Work - Animal Holding Area

G

SUSPENDED EQUIPMENT

STRUCTURE

EQUIPMENT

(TYPICAL)

GAS VALVE.

UNION.

FULL SIZE DIRT LEG.

PRESSURE REGULATOR.

RTH Gas Connections

North Animal Holding Area

Sheet: of

RTU DEMOLITION

5 9

RTU DEMOLITION

1) Remove existing RTU-1 including unit including concrete slab.

2) Remove supply and return air ducts to locations shown in IMAGE-6 this page. All items to be disposed of off of USDA site and disposed of following local, state, and federal rules and guidelines for the type of material removed.

2) Remove conduits back to building exterior wall. Remove unit disconnect and conduit wire boxes. Remove wiring back to interior electrical service panel. Remove gas piping back to 2-inch incoming pipe at the regulator assembly.

RTU-1

Cut, seal, and insulate at most logical point in this location.

Connect new ductwork at most logical point in this location.

IMAGE-6

Sheet: of

RTU INSTALLATION

6 9

RTU AND EQUIPMENT INSTALLATION

1) Install concrete equipment pad as per DETAIL-2 on this page.

2) Install 24" Metal Curb centered in concrete slab. Fasten according to manufacturer's specifications.

3) Install RTU to metal curb according to manufacturer's specifications and guidelines. Connect electrical conduit/wires/circuit breaker, gas pipe, communication conduit/cables, and ductwork.

Reuse existing wall penetrations, if possible, for conduits from building. Seal in penetrations using 3M Model S-21404 or Hilti FS-1 Max #2101531 or a submitted and approved equivalent fire-stopping caulk/sealant applied flush to walls.

4) Install Johnson Controls space temperature/humidity sensor in location shown on this drawing.

See Equipment Schedule page 9 for Model number.

5) Install new Johnson Controls CGM in existing control panel and program as per Statement of Work.

6) Cut, cap, seal, and insulate return air duct in location shown in this drawing.

7) Connect/transition new supply air duct at most logical point as shown in this drawing.

8) Install new return air duct and grill in location as shown in this drawing. Exact location to be determined with the COR. Existing electrical conduit and wires may need to be relocated inside building, depending upon where the location of the return air physically enters building.

9) Provide supports for ductwork, including concrete blocks. See Detail-3 on RTU-Details drawing page.

NOTE: All installations shall comply with the manufacturer’s installation instructions, as well as all applicable rules, regulations, and trade standards, unless otherwise noted in this document or the associated drawings. The contractor shall perform leak testing on all new and existing piping, and any deficiencies identified shall be reported to the COR. Sheet metal/ductwork shall follow installation practices and SMACNA guidelines.

Return Duct Supply Duct

Cut, cap, seal, and insulate at most logical point in this location.

Connect new ductwork at most logical point in this location.

14 x 16 - L

525 C F

M x

L

C F

M

60" Distance from pad to building

60"

MGas Meter

A

A

A

A

A

A

B B

BB

Jo hn so n

C on tro ls

C G

M C on tro lle r in e xi st in g pa ne l.

NEW RETURN

AIR GRILL IN

WALL

A, B, C

REFERENCES

TO REGISTER AND DIFFUSER

SCHEDULE ON PAGE 9.

NEW Equipment Pad - RTU

RTU-1

4'-6" x 7'-0"

3' 3'

3' 3'

13'-0"

'-6

IMAGE-6

C

T

Sheet: of

RTU DETAILS

7 9

NOTE: HDG OR SS THREADED RODS, NUTS, AND WASHERS.

1. DUCT SUPPORT SHALL BE PORTABLE PIPE HANGERS, INC. MODEL PPH-D OR

ADVANCED SUPPORT PRODUCT, INC. MODEL SS200DD.

SEAL ALL JOINTS

DUCT

1-5/8"B22TH &

1-7/8"BTS22TH STRUT

7LB BASES (EACH)

FINISHED

GRADE

HIGH DENSITY

POLYPROPYLENE

BASE W/UV

INHIBITOR

CONCRETE BLOCK

SUPPORTS

DOUBLE WALL INSULATED

WATER PROOF

RTU-1

DETAIL - 3

Equipment Pad - RTU

RTU-1

4'-6" x 7'-0"

3' 3'

3' 3'

13'-0"

'-6

DETAIL - 2

Sheet: of

Statement of Work

8 9

This acquisition requires labor, material, and equipment needed to complete the following:

2.1.1.Remove and replace the existing Rooftop Unit (RTU) concrete equipment pad.

2.1.2.Remove existing 4-Ton pad mounted RTU unit to include: external metal ductwork from the RTU to the building, electrical conduit, wires, circuit breaker, and natural gas hookup.

2.1.3.Furnish and install new RTU on a 24” high metal curb. See page 9 “Equipment Schedules” in drawings.

2.1.4.Furnish and install (4) Gas fired radiant tube heaters (RTH 1-4) including pressure regulators, shutoff valves, hangers, pipe unions, and intake/exhaust metal ductwork at each heater. Pipe and fittings Schedule-40 steel. Reuse existing thermostats and wires.

2.1.5.RTH-5 and its thermostat, conduits, and wires shall be removed. Remove existing intake/vent for RTH-5, fill hole with submitted and approved fire caulk and install sheet metal patch and seal holes in the interior and exterior of wall and roof. Sheet metal patches shall be coated with red “rust” colored primer. Remove wires back to main breaker panel and conduit back to nearest junction box and plug the hole.

2.1.6. Furnish and install (1) hanging gas-fired unit heater including conduit, wiring, gas piping and venting pipes.

2.1.7.Furnish and install Four (4) sight proof air-transfer door grills into existing doors. Locations shown on page 6 of the drawings. Refer to Equipment Schedules page 9 of the drawings for information.

2.1.8.Furnish and install one (1) return-air grill through the wall as shown in location on page 6 of the drawings. Refer to Equipment Schedules page 9 of the drawings for information. For placement of new return air grill see detail on page 6 of the drawings.

2.1.9.Ductwork Insulation: Ductwork insulation needs to meet most recent Iowa Energy code for thickness and R value.

Jacketing: Factory-laminated aluminum/polymer weather-resistant cladding (e.g., Alumaguard, ArmaTuff, VentureClad) compliant with ASTM C1775; zero-perm, UV/abrasion-resistant.

Fire Rating: ≤ 75 flame spread / 150 smoke-developed per ASTM E84.

Moisture Control: Vapor permeance ≤ 0.02 perms; all seams and overlaps sealed with compatible tape/adhesive.

Corrosion: Facing or facing adhesive meets ASTM C871 corrosion limits for stainless and carbon steel.

Installation: Applied over insulation per SMACNA standards; supports installed to prevent insulation compression; jacket sealed at transitions with factory tape.

2.1.10. Remove existing LP fuel line and regulators from the LP(Liquid Propane) storage tanks to building entry point.

Note: LP tanks will be removed by USDA.

2.1.11.Uninstall bollards from LP tanks area and remove from site.

2.1.12.Furnish and install approximately 67 feet of 2-inch High-Density Polyethylene (HDPE) gas piping and two 2-inch cast iron plug valves (e.g. A.Y. McDonald 10687B) connecting to existing 2-inch gas main pipe as shown on page 2 of the drawings. Furnish and install two 51/4-inch Clean in Place valve boxes with adjustable top sections. (e.g. Bingham & Taylor P5B with PVC extension and cap). Furnish and install 3/8-inch pea gravel at a depth of 6-inches as a base underneath the valve box for stability. New piping shall be buried , trenched or bored, at a minimum of 36-inches. 12-gauge tracer wire shall be installed with the piping. All joints shall be connected using HDPE Electrofusion type couplings. Furnish and install 2-inch anode-less riser, regulator, shutoff valves, flow meter & gas meter set with volume pulser. The Contractor shall provide manufacturer's standard anode-less risers. Anod-less risers shall be of swaged gas-tight construction with O-ring seals, metal insert, and protective sleeve with 7 to 12 mil thick epoxy coating. Provide support for the riser.

2.1.12.1.Install new natural gas regulator before the new meter (e.g. Maxitrol 325-9L and at each heating device (e.g. Maxitrol 325-5L). Regulators shall be adjusted to meet the manufacturer’s requirements for each heater location.

2.1.12.2.Natural gas regulators at the riser locations shall provide over pressure protection by use of a full internal relief to prevent downstream pressure from exceeding 5 psig in the event of failure.

2.1.12.3.Gas flow meter (e.g. American Meter Model AL-1000) shall be diaphragm type (gas positive displacement meter) designed specifically for natural gas supply metering, and rated for the pressure, temperature, and flow rates of the installation. Meter must have an accuracy of plus or minus 1 percent of actual flow rate. The meter index must include a direct reading mechanical totalizing register and electrical impulse dry contact output for remote monitoring. The electrical impulse dry contact output must not require field adjustment or calibration.

2.1.13.Furnish and install Johnson Controls CGM BACnet controller for gas meter flow totalization monitoring. This includes conduit, wires/cabling, programming of controller, operational/functional tests and mapping to Johnson Controls Metasys building automation system.

2.1.14.Johnson Controls shall submit a schedule of available BACnet points from the RTU to Metasys for review and approval. COR to determine points for mapping to Metasys including information for trending, alarming, scheduling, etc. Points shall be brought into Metasys, assigned into a User View, and have programming trending, alarming, and scheduling.

2.1.15.Install new Johnson Controls space temperature/humidity network sensor (e.g. NS-BTB7003-0).

2.1.16.Install and terminate a(1) Category 6 (CAT 6) 23AWG cable from the RTU control panel section to the existing Johnson Controls Utility Monitoring Panel inside the building.

2.1.17.All installations shall comply with the manufacturer’s installation instructions, as well as all applicable rules, regulations, and trade standards, unless otherwise noted in this document or the associated drawings. The contractor shall perform leak testing on all new and existing piping, and any deficiencies shall be repaired and retested.

2.2.Work in the north section of the building is the animal holding area. Working in this space requires the contractor to wear a Tyvek Suit with rubber boots or suitable USDA provided work attire with a mandatory shower out. The suits, boots, and work attire shall be provided by the USDA. Tools and equipment used in the animal holding area shall remain in the area until the work is completed. Upon completion of work, USDA will decontaminate the tools and equipment before they can be removed from the area.

2.3.All uninstalled equipment including heaters, wiring, conduits, metal ductwork, fittings, and associated hardware from the animal holding area shall be placed in a location in the work area as determined by the COR. USDA shall be responsible for decontaminating and removal of these items. All uninstalled equipment from project areas other than the animal holding area shall be removed from the USDA site by the contractor.

2.4.Contractor is responsible for locating underground obstructions prior to any earthwork.

2.5.The contractor shall perform Hydro-vac excavation to uncover underground piping and valve assemblies to avoid disturbance to adjacent electrical service and existing main gas piping and valves.

Sheet: of

Equipment Schedules

9 9