Approved_Trailhead_Restroom_-_Addendum_No._2.pdf

SGere2 Digitally signed by SGere2
Date: 2024.02.13 10:17:47 -05'00'

ARRO Consulting, Inc. February 12, 2024
201 Thomas Johnson Drive, Suite 207
Frederick, MD 21702

ADDENDUM NO. 2

TOWN OF INDIAN HEAD, MARYLAND

TRAILHEAD RESTROOM
SHA No. CH257B51
FAP No. AC-TAP-3(871)E

In accordance with the requirements of the “Instructions to Bidders”, this Addendum shall be
attached to and become a part of the Contract Documents for the above referenced project.

Pre-Bid Questions from Contractors

Question 1. The bid sheet has a line item for striping and it is listed as a lump sum, but there
are specific unit price items. Should the LS item be deleted?

Response: No. Line-item ‘e’ in the Schedule of Prices is referencing Topsoil
Stripping. All pavement markings are listed in Line-items ‘m’- ‘r’.

Question 2. Paint is shown with the block unit price. Shouldn’t these be separate?

Response: No. Include painting of block and masonry in unit prices for Line-items
‘c’ and ‘d’.

Question 3. The dry well detail shows bank run gravel. Should this be washed gravel?

Response: No. The dry well detail in MDE’s stormwater manual calls out bank run
gravel.

Question 4. What is the elevation of the ceiling. There are varying elevations throughout the
drawings. Should it be 8’-0” in order to accommodate the ductwork?

Response: Yes. The elevation of the acoustical drop ceiling shall be 8’-0”.

Question 5. The elevation of the louvers is unclear. If we course the block it appears the intake
louvers is both above and below the ACT and the exhaust are shown at an
elevation above the bottom of the trusses.

Response: The bottom of exhaust louvers shall be placed at 10’-0”. Please see
‘Concerning the Drawings’ for an updated plan and detail.

6508.22 A2-1 ARRO
TOWN OF INDIAN HEAD – TRAILHEAD RESTROOM
Question 6. Is there a separation between the two roof sections (bath and pavilion) to keep
people from climbing into or out of the building?

Response: There is no separation between the restroom and pavilion roof sections.
The roof shall be continuous.

Question 7. Please verify whether the flush valves and faucets are electronic. The specs call
for both and the plans call out standard but show electric junction boxes.

Response: All lavatory fixtures shall be electric. Fixtures in the utility room shall be
manual. See ‘Concerning the Project Manual’ for updated specifications.

Question 8. The inside wall chase is small – 20”. This will not meet electrical code.

Response: Per table 300.5 in the NFPA 70 (2017) National Electrical Code (NEC),
the 20” chase is compliant.

Question 9. Will you be adding a line item for unforeseen subsurface site conditions?

Response: Yes. Line-item ‘t’ has been added in Schedule of Prices for Unforeseen
Subsurface Site Condition Excavation’. See section ‘Concerning the
Project Manual’ for updated Schedule of Prices.

Concerning the Project Manual

A. CP – Proposal Form Packet – Federal – Schedule of Prices: DELETE and REPLACE in
its entirety; Attached to this Addendum.
B. Section 15400 – DELETE and REPLACE in its entirety; Attached to this Addendum.

Concerning the Drawings

A. Sheet No. 7 of 13 - DELETE and REPLACE, Revised on February 9, 2024; Attached to
this Addendum.
B. Sheet No. 8 of 13 - DELETE and REPLACE, Revised on February 9, 2024; Attached to
this Addendum.
C. Sheet No. 10 of 13 - DELETE and REPLACE, Revised on February 9, 2024; Attached
to this Addendum.

Miscellaneous Items

None.

6508.22 A2-2 ARRO
TOWN OF INDIAN HEAD – TRAILHEAD RESTROOM
 END OF ADDENDUM NO. 2

BIDDERS MUST ACKNOWLEDGE RECEIPT OF THIS ADDENDUM IN THE SPECIFIED
PLACE ON THE BID FORM. THE ABSENCE OF THIS ACKNOWLEDGMENT WILL BE
CAUSE FOR REJECTION OF THE BID.

6508.22 A2-3 ARRO
TOWN OF INDIAN HEAD – TRAILHEAD RESTROOM
CONTRACT PROVISIONS CONTRACT NO. CH257B51
PROPOSAL FORM PACKET- FEDERAL FAP NO. AC-TAP-3(871)E
SCHEDULE OF PRICES 1 of 3

Item Description Unit Qty. Unit Price Total Price
No.
1 Site
a Miscellaneous Grading LS 1 $ $
b Miscellaneous Excavation LS 1 $ $
c Sidewalk SY 210 $ $
d Detectable Warning Surfaces SF 40 $ $
e Topsoil Stripping LS 1 $ $
f Install 6" PVC (Include Excavation and LF 246.5 $ $
Standard Backfill)
g Sanitary Sewer Cleanout EA 1 $ $
h Install 1 1/2" PVC (Include Excavation LF 33.5 $ $
and Standard Backfill)
i 1" Water Main EA 1 $ $
j Silt Fence LF 230 $ $
k Stabilized Construction Entrance TON 14 $ $
l Dry Wells EA 4 $ $
m Pavement Markings Paint Lines (6" LF 480 $ $
White)
n Pavement Marking Paint Lines (5" White) LF 110 $ $
o Pavement Marking Paint Lines (12" LF 100 $ $
White Thermoplastic)
p Pavement Marking Paint Lines (12" LF 53 $ $
White)
q Pavement Marking Paint Lines (4" White) LF 38 $ $
r Pavement Markings Paint Legends SF 60 $ $
s Signs SF 32 $ $
t Unforeseen Subsurface Site Condition CY 20 $ $
Excavation
Item 1 Subtotal $
2 Building
a Concrete Footing (202LF x 2' x1')) CY 15 $ $
b Concrete Slab ( 61.17'x26.67'x0.42") CY 25.5 $ $
c Masonry (4" brick/8" Block), painted SF 860 $ $
interior

Issued with Addendum No. 2 on February 12, 2024 05 30-17
-
CONTRACT PROVISIONS CONTRACT NO. CH257B51
PROPOSAL FORM PACKET- FEDERAL FAP NO. AC-TAP-3(871)E
SCHEDULE OF PRICES 2 of 3

d Masonry (8"block), painted interior SF 794 $ $
e Brick Columns and footings SF 30 $ $
f Stl Tube Columns (6x6x1/4) LF 70 $ $
g Hollow Metal Doors EA 4 $ $
h Interior Plywood Sheating (Ceiling) SF 895 $ $
I Exterior Plywood Sheeting (Roof) SF 2100 $ $
m Acoustical Drop Ceiling (Restrooms) SF 675 $ $
n Wood Trusses EA 32 $ $
o Metal Roofing Panels SF 2100 $ $
p Metal Siding (Gable End) SF 75 $ $
q Timber Girders (3 - 2x10) LS 1 $ $
r Misc Metals (WWF, Stl Plates, etc) LS 1 $ $
s Restroom Flooring (2 part expoxy) SF 560 $ $
t Alum Gutter & Downspouts LF 170 $ $
Item 2 Subtotal $
3 Plumbing
a WC and partitions EA 4 $ $
b Handicapped WC and partitions EA 2 $ $
c Urinals and screens EA 2 $ $
d Sinks and accessories EA 5 $ $
e Exterior Drinking Fountains EA 2 $ $
f 1 1/2" copper installed LF 115 $ $
g 1/2" copper installed LF 73 $ $
h 4" PVC installed LF 36 $ $
i 3" PVC installed LF 65 $ $
j 2" PVC installed LF 11 $ $
k 3/4" copper installed LF 7.5 $ $
l 1" copper installed LF 5.5 $ $
Item 3 Subtotal $
4 HVAC
a Exhaust Fans EA 7 $ $
b 24'x16" Louvers and Dampers EA 2 $ $
c 12"x10" Exhaust Duct LF 81 $ $
d 16"x16" Stationary Exhaust Louver EA 4 $ $

Issued with Addendum No. 2 on February 12, 2024 05 30-17
-
CONTRACT PROVISIONS CONTRACT NO. CH257B51
PROPOSAL FORM PACKET- FEDERAL FAP NO. AC-TAP-3(871)E
SCHEDULE OF PRICES 3 of 3

e Duct to Louver Connector EA 2 $ $
Item 4 Subtotal $
5 Electrical
a LED Lights (Picnic Area) EA 9 $ $
b LED Lights (Restrooms) EA 8 $ $
c Wall Insert Electric Heaters EA 3 $ $
d Electrical Service, Wiring, and LS 1 $ $
Panelboard
Item 5 Subtotal $
6 Alternate bid Items
a Provide & Install 3/4-inch Water House EA 1 $ $
Connection (incl. Excavation, standard
Backfill & Meter Setting)
b Provide and install 6" PVC SDR 26 (incl. LF 5 $ $
Excavation, standard Backfill & Meter
Setting)
c Provide and install 8" PVC SDR 35 (incl. LF 5 $ $
Excavation, standard Backfill & Meter
Setting)
Item A Subtotal $

Mobilization and Closeout (5%) $
Bonds and Insurance (2%) $

TOTAL BASE BID $

Grand Total BASE BID PRICE (Figures): $

Grand Total BASE BID PRICE (Words): $

Grand Total ALTERNATE BID ITEMS (Figures): $

Grand Total ALTERNATE BID ITEMS (Words): $

Issued with Addendum No. 2 on February 12, 2024 05 30-17
-
 SECTION 15400

PLUMBING

PART 1 - GENERAL

1.01 SECTION INCLUDES

A. Installation and materials.

1.02 RELATED SECTIONS

A. Trenching, Backfilling, and Compacting: Section 02221.

B. Basic Mechanical Requirements: Section 15010.

C. Basic Materials and Methods: Section 15050.

D. Supports, Anchors, and Seals: Section 15090.

1.03 REFERENCES

A. American Society of Mechanical Engineers (ASME) Pressure Vessel Code and
Interpretations as applies to specified Products.

B. American Society of Sanitary Engineering, Stds. ASSE 1011, 1012 & 1013.

C. International Building Code, Plumbing, 2006 or latest edition adopted by the Town.

D. Plumbing and Drainage Institute: Standard P.D.I. - WH201.

E. Underwriters’ Laboratories (UL) Listings and Approvals on specified Products.

F. National Electric Manufacturer’s Association (NEMA) Standards as apply to specified
Products.

G. National Fire Protection Association (NFPA).

1.04 SUBMITTALS

A. Product Submission: As specified in Section 15010.

6508.22 A2-15400-1 ARRO
INDIAN HEAD –TRAILHEAD RESTROOM Issued with Addendum No.2 on February 12, 2024
 B. Operations and Maintenance Data:
1. Manufacturer’s of plumbing fixtures, trim and fittings shall include complete
instructions with their products giving directions for replacing renewable parts of
their products as well as instructions for cleaning the finished surfaces of such
products.
2. Include above stated data as part of the Submittals of Section 15010.

1.05 JOB CONDITIONS

A. Protection:
1. Use non-marring tools when making up plated piping to prevent scarring or other
surface damage.
2. Provide adequate protective covering on fixtures and trim to prevent damage or
defacement. Maintain such protection until completed work is accepted by the
Engineer.
3. Store fixtures and trim at the site and elsewhere, protected from the elements.
4. Protect motors and electrical apparatus from construction debris and water during
plumbing work in the vicinity of such equipment. Such protection may be
afforded by using impervious membrane material sheets or other impervious
materials of Contractor’s choosing.

PART 2 - PRODUCTS

2.01 MATERIALS

A. Basic Piping Materials: Pipe and pipe fitting materials, and associated installation
materials as specified in Section 15050.
1. Piping system material types for this Section are as abbreviated herein with
material particulars specified in Section 15050.

B. Pipe Supports, Anchors and Seals: Materials as specified in Section 15090.

C. Contractor Option: Several types of pipe materials are listed herein at the Contractor’s
option for the various piping systems. However, mixing of pipe materials in a system
will not be permitted; except where specified otherwise herein or where directed
otherwise by the Engineer. No piping option permitted where only one pipe material is
specified for a piping system.

D. Domestic Hot and Cold Potable Water Piping:
1. Type L Copper with SOLDER joints, aboveground.
2. Type K Copper with FLARED joints, underground.

E. Soil or Waste and Vent Piping:
1. Plastic (PVC) with SOLVENT WELDED joints, aboveground.

6508.22 A2-15400-2 ARRO
INDIAN HEAD –TRAILHEAD RESTROOM Issued with Addendum No.2 on February 12, 2024
 F. Rainwater Conductor Piping:
1. Plastic (PVC) with SOLVENT WELDED joints, aboveground.

2.02 PIPING SPECIALTIES

A. Flexible Connectors: As specified in Section 15050.

1. Ferrous Metal and Non-Ferrous Metal Unions and Strainers: As specified in
Section 15050.

B. Backflow Preventer (1/2- & 3/4-inch): Sweat type bronze body, double check valve
pressure design with intermediate atmospheric vent. Suitable for continuous pressure
use, approved under ASSE Standard 1012.

C. Backflow Preventer (1-inch and larger): Threaded type bronze construction, stainless
steel internal parts and flange bolts, and tight-sealing rubber check valve assemblies.
Suitable for supply to 175 psi and 140°F. temperature.
1. Complete assembly includes supply strainer, gate valves before and after the
device and device composed of a pressure differential relief valve between two
positive seating check valves and an intermediate atmospheric vent.
2. Backflow preventer approved under ASSE Standard 1013.
3. Acceptable Manufacturers:
a. Watts Regulator Company, No. 909.
b. Hersey-Products, Inc.
c. ITT Lawler.
d. Or Approved Equal.

D. Water Hammer Arrestors: Threaded type of corrosion-resistant construction and
pneumatic displacement, elastomer bellows design.
1. Arrestors tested, certified and sized per P.D.I. Standard WH 201.
2. Acceptable Manufacturers:
a. Josam Manufacturing Co., No. 1485-1 to 1485-6.
b. Zurn Industries, Inc., No. Z-1700-100 to 400.
c. Wade.
d. Smith.
e. Or Approved Equal.

2.03 VALVES

A. Basic Valves: As specified in Section 15050.

B. Balancing Valve: Solid Bronze construction for applications 1¼-inch and under, and
iron body bronze plug for applications 1-inch and above. Valve rated 200 psi water
non-shock, 240°F maximum water temperature. Balance position set and locked by
allen screw.
1. Acceptable Manufacturers:
a. Sarco Company, Inc.; Type V Sarcoflow.

6508.22 A2-15400-3 ARRO
INDIAN HEAD –TRAILHEAD RESTROOM Issued with Addendum No.2 on February 12, 2024
 b. Crane Company.
c. ITT Hoffman Specialty.
d. DeZurik.
e. Or Approved Equal.

C. Hose Bibbs (Interior): Solid bronze construction, angle pattern, renewable washer,
sweat copper to standard 3/4-inch hose end outlet.

D. Non-Freeze Hose Bibbs: Provide non-freeze design wall hydrant for standard 3/4-inch
hose end outlet and of length suited to wall thickness.
1. Hydrant of cast bronze construction with removable T handle operator, brass
operating mechanism, adjustable locknut, removable nylon seat, 3/4-inch sweat
inlet, polished brass face, and supplied with vacuum breaker, ASSE Standard
1011.
2. Acceptable Manufacturers:
a. Josam Manufacturing Co., No. 71200(-53) (-81).
b. Zurn Industries, Inc., No. Z-1315-5.
c. Wade.
d. Smith.
e. Or Approved Equal.

2.04 TRAPS, DRAINS, AND CLEANOUTS

A. Pipe Traps: Provide traps in piping systems, as required by local prevailing code,
composed of fittings of materials as specified for the particular system piping.
1. This requirement does not apply to plumbing fixtures where the trap is specified
in the plumbing fixture description.

B. Drains:
1. Materials: Gray iron castings produced to PDI standards and having a 25,000 psi
minimum tensile strength. Castings finished in manufacturer’s standard rust
inhibitive coating except for plated surfaces.
2. Acceptable Manufacturers:
a. Josam Manufacturing Co.
b. Zurn Industries, Inc.
c. Wade Division-Tyler Pipe.
d. Jay R. Smith Manufacturing Co.
e. Or Approved Equal.

C. Drain Accessories: Provide the following for those drains as indicated on Drawings.
1. Backwater Valve: Similar to Josam No. 11000 Series with extension to finished
floor.
2. Trap Seal Primer Valve: Similar to Josam No. 1465 Series.

6508.22 A2-15400-4 ARRO
INDIAN HEAD –TRAILHEAD RESTROOM Issued with Addendum No.2 on February 12, 2024
 D. Cleanouts, Cover Plates and Caps: Designed for inside caulked connection with lead
sealed brass plugs, adjustable housing, and heavy scoriated brass cover.
1. Floor Cleanout (CONCRETE); Josam Series No. 56040-2.
2. Wall Cleanout Cover Plate; Josam Series No. 58600-18.
3. Cleanout Ferrule; Josam Series No. 58500.
4. Cleanout Tee; Josam Series No. 58790-18.
5. Wall Cleanout and Access Cover; Josam Series No. 58710-18.
6. Or Approved Equal.

2.05 PLUMBING FIXTURES

A. General: Provide glazed finish fixtures free from discoloration, chips, flaws, craze and
absorbency. Vitreous ware shall be fired first quality china, thoroughly fused and
homogeneous in color, close grained and free from pores.

B. Fittings and Trim:
1. Provide fixture fittings and trim of chrome plated brass, and unless specified
otherwise, of the same manufacturer as the fixtures, including P-traps, supply
pipes, supply stops, union connections and escutcheons.
2. Use fixture trim of such design that working threads, seats and discs are easily
renewed without taking the body of the fitting apparatus from the fixture or
supply lines.

C. Fixture Supports and Carriers: Provide fixture supports and carriers designed to
accommodate the fixture types as specified and as suited to the particular installation
requirements of such fixtures.
1. Acceptable Manufacturers:
a. Josam Manufacturing Co.
b. Zurn Industries, Inc.
c. Wade Division-Tyler Pipe.
d. Jay R. Smith Manufacturing Co.
e. Or Approved Equal.

D. Fixture Color: White except where indicated otherwise in the Fixture Schedule.

E. The following gallons per flush or flow in gallons per minute are required water use
baseline for project:
Water Closets Flushometer Valve 1.28 gallons per flush
Urinals Flushometer Valve 0.125 gallons per flush
Lavatory Faucet 0.5 gallons per minute at 60 psi

Provide automatic (electronic hand free) capacitive-sensor-operated controls for all
fixtures. Sensor module shall be water-conserving, vandal resistant, capacitive-sensing
with omni-directional sensing zone, timing turn-off delay and stationary object
automatic timed cutoff.

6508.22 A2-15400-5 ARRO
INDIAN HEAD –TRAILHEAD RESTROOM Issued with Addendum No.2 on February 12, 2024
 Fixtures shall be water conservation type, in accordance with ASHRAE 189.1 Section
6.3.2.1 (Plumbing Fixtures and Fittings). Fixtures for use by the physically
handicapped shall be in accordance with ADA/ANSI A117.1.

F. Fixture Schedule:
P-1 Water Closet:
a. Bowl: Water-saver, wall-mounted, elongated bowl, vitreous china, siphon
jet action, back outlet with flushometer. Acceptable Manufacturers:
1) American Standard; 2477.016 AFWALL (3.5) ((OR)) 2257.103
AFWALL (1.6).
2) Kohler; K-4430-ET KINGSTON.
3) Eljer; 111-0405 AUBURN.
4) Or Approved Equal.
b. Seat: White, hydraulically compressed plastic, elongated open front less
cover, self-sustaining, with stainless steel hinge posts and concealed check.
Acceptable Manufacturers:
1) Church; 5320.536.
2) Kohler; K-4666-SC.
3) Olsonite; 95CC-SS.
4) Or Approved Equal.
c. Flush Valves: Polished Chrome finish, hardwired automatic sensor with
manual push button override, 1-inch I.P.S. screwdriver angle stop, with
protective cap, adjustable tailpiece, vacuum breaker flush connection and
spud coupling for 1½-inch top spud, wall and spud flanges and override
button. Acceptable Manufacturers:
1) Sloan; Royal 111 SFSM-1.28-TMO-LT
2) Zurn; ZEMS6000-IS
3) Or Approved Equal.
P-2 Water Closet (For Physically Handicapped):
a. Bowl: Water-saver, wall-mounted, vitreous china, siphon jet action,
elongated bowl, 1½-inch top spud. Acceptable Manufacturers:
1) American Standard; 2477.016 AFWALL.
2) Kohler; K-4430-ET KINGSTON.
3) Eljer; 111-0405 AUBURN.
4) Or Approved Equal.
b. Seat: White, hydraulically compressed plastic, elongated open front less
cover, self-sustaining, with stainless steel hinge posts and concealed check;
Acceptable Manufacturers:
1) Church; 5320.536.
2) Kohler; K-4666-SC.
3) Olsonite; 95CC-SS.
4) Or Approved Equal.
c. Flush Valve: Polished Chrome finish, hardwired automatic sensor with
manual push button override, 1-inch I.P.S. screwdriver angle stop, with
protective cap, adjustable tailpiece, vacuum breaker flush connection and

6508.22 A2-15400-6 ARRO
INDIAN HEAD –TRAILHEAD RESTROOM Issued with Addendum No.2 on February 12, 2024
 spud coupling for 1½-inch top spud, wall and spud flanges and override
button; Acceptable Manufacturers:
1) Sloan; Royal 111 SFSM-1.28-TMO-LT
2) Zurn; ZEMS6000-IS
3) Or Approved Equal.
P-3 Urinal:
a. Shell: Vitreous china washout, wall hung, siphon jet type, integral trap,
extended side shields, ¾-inch inlet spud, outlet connection threaded 2-inch
inside. Acceptable Manufacturers:
1) American Standard; 6501.010 WASHBROOK (1.0 GPF).
2) Kohler ; K-4980-T BARDON.
3) Eljer; 161-1030 CORRECTO.
4) Or Approved Equal.
b. Flush Valve: Polished Chrome finish, hardwired automatic sensor with
manual push button override, ¾-inch I.P.S. screwdriver bak-chek angle stop
with protective cap, adjustable tailpiece, vacuum breaker, flush connection
and spud coupling for ¾-inch top spud, wall and spud flanges. Acceptable
Manufacturers:
1) Sloan; Royal 186 SFSM-0.125-TMO-LT
2) Zurn; ZEMS6195AV-ULF
3) Or Approved Equal.
P-4 Urinal (For Physically Handicapped):
a. Shell: Vitreous china washout, wall hung, siphon type, integral trap,
3/4-inch inlet spud, outlet connection threaded 2-inch inside; Acceptable
Manufacturers:
1) American Standard; 6501.010 WASHBROOK (1.0 GPF).
2) Kohler; K-4960-T BARDON.
3) Eljer; 161-1030 CORRECTO.
4) Or Approved Equal.
b. Flush Valve: Polished Chrome finish, hardwired automatic sensor with
manual push button override, 3/4-inch I.P.S. screwdriver bak-chek angle
stop with protective cap, adjustable tailpiece, vacuum breaker, flush
connection and spud coupling for 3/4-inch top spud, wall and spud flanges;
Acceptable Manufacturers:
1) Sloan; Royal 186 SFSM-0.125-TMO-LT
2) Zurn; ZEMS6195AV-ULF
3) Or Approved Equal.
P-5 Lavatory:
a. Bowl: Countertop design, self-rimming lavatory, fitting ledge, enameled
cast iron construction with front overflow and 8-inch centers punch, deck
mounted faucets and 32 oz. liquid soap dispensers mades of stainless steel,
oval configuration (20 x 17-inches).Acceptable Manufacturers:
1) American Standard; 3302.015 OVAL HORIZON.
2) Kohler; K-2905 FARMINGTON.
3) Eljer; 052-2078.
4) Or Approved Equal.

6508.22 A2-15400-7 ARRO
INDIAN HEAD –TRAILHEAD RESTROOM Issued with Addendum No.2 on February 12, 2024
 b. Faucet: Hardwired senor faucet, 4 inch center set, 1.5 GPM, and ADA
compliant. Acceptable Manufacturers:
1) American Standard
2) Kohler
3) Sloan
4) Or Approved Equal.
c. Supply Piping: 3/8-inch angle valve, wheel handle, 3/8-inch male threaded
inlet, escutcheon, flexible tube riser, chrome finish.
d. Drain: Adjustable cast brass ‘P’-trap, swivel-ell, 1¼-inch inlet, 1¼-inch
outlet, cleanout plug, chrome finish.
P-6 Lavatory (For Physically Handicapped):
a. Bowl: Countertop design with fitting ledge, front overflow, acid-resisting
enameled cast iron, 8-inch centers; Acceptable Manufacturers:
1) American Standard; 3210.044 LEDGELYN.
2) Kohler; K-2902 FARMINGTON.
3) Eljer; 052-0248 CLEMENT.
4) Or Approved Equal.
b. Faucet: Hardwired senor faucet, 4 inch center set, 1.5 GPM, and ADA
compliant. Acceptable Manufacturers:
1) American Standard
2) Kohler
3) Sloan
4) Or Approved Equal.
P-7 Service Sink:
a. Sink: Wall-mounted design, enameled cast iron service sink with wall
hanger for through-back faucet, rim guard and standard P-trap with
enameled strainer; Acceptable Manufacturers:
1) American Standard; 7692.049 LAKEWELL.
2) Kohler; K-6716.
3) Eljer; 242-0135.
4) Or Approved Equal.
b. Faucet: Renewable seats, hose outlet spout end, bucket hook, indexed lever
handles, inlets 1/2-inch female adjustable union couplings; Acceptable
Manufacturers:
1) American Standard; 8340.234.
2) Kohler; 8924.
3) Eljer; 749-0500.
4) Or Approved Equal.

G. Dual Accessible Water Fountain:

1. Easy-Touch Push bar activation
2. Extra deep basin to minimize splashing; with integral drain
3. Vandal resistant bubbler
4. Valve with built-in flow regulator to provide constant stream from 20 to 105 psi water
pressure.

6508.22 A2-15400-8 ARRO
INDIAN HEAD –TRAILHEAD RESTROOM Issued with Addendum No.2 on February 12, 2024
 5. For outdoor applications.
6. Bubbler outlet orifice shall be located within 36” of the floor.
7. Bubbler outlet orifice shall be located within 6” of the front edge of the drinking
fountain.
8. The water stream from the bubbler shall be substantially parallel to the front edge of
the drinking fountain – or – for round or oval fountains, positioned so that the flow of
water is within 3” of the front edge of the drinking fountain.
9. The spout shall provide a flow of water at least 4” high so as to allow the insertion of
a cup or glass under the flow of water.

H. Hand Blower
1. Wall mount, 110 volt hand blow dryer, vandal resistant of stainless steel construction.

I. Baby Changing Station
1. Fixed-type baby changing station constructing of maintenance free solid surface
material.

2.06 PLUMBING EQUIPMENT

A. Small Capacity Electric Water Heater: UL Listed electric heater with high carbon steel
glass or stone lined tank suitable for 150 psig working pressure with ¾” inlet and ¾”
outlet and front-mounted drain valve.
1. Tank protected with high-density magnesium anode and an ASME rated pressure
temperature relief valve. Tank insulated with 1-inch minimum, dense glass fiber
and encased in an enameled steel jacket.
2. UL Listed electric heating elements of low watt density immersion type, zinc-
plated copper sheathed and flange-mounted with no-simultaneous element
operation control, immersion type thermostat set at 120°F., high limit cut-off, and
factory wired from an integral junction box.
3. Acceptable Manufacturers:
a. A.O. Smith Pro-Max EJC-6
b. W. L. Jackson Mfg. Co., Inc.
c. Rudd Mfg. Co.
d. Or Approved Equal.

PART 3 - EXECUTION

301 INSPECTION

A. Condition of Rough-Ins: Inspect rough-ins and determine exact fixture location with
respect to the Drawings.

B. Do not proceed until fixture positions are verified, or any adjustments in fixture
locations are approved by the Engineer.

6508.22 A2-15400-9 ARRO
INDIAN HEAD –TRAILHEAD RESTROOM Issued with Addendum No.2 on February 12, 2024
3.02 PERFORMANCE

A. Installation Instructions: Install those Products, as specified previously under PART 2
and not specifically covered for installation herein under PART 3, in strict accordance
with manufacturer’s installation instructions and at locations indicated on the Drawings.

B. Electrical Interface: As specified in Section 15010.

C. Equipment Start-Up: Perform equipment start-up and ensure its proper operation prior
to acceptance of Work by the Engineer.

3.03 PIPING INSTALLATION

A. Fabrication: Make up piping runs as specified in Section 15050.

B. Installation: Place and support piping runs as specified in Section 15090.

C. Trenching: Perform earthwork for buried piping as specified in Section 02221.

D. Piping Pitch: Unless otherwise indicated, pitch piping not less than the following:
1. Potable Water: One inch in fifty feet.
2. Soil or Waste and Vent: One inch in four feet.
3. Horizontal Rainwater: One inch in four feet.

E. Reduced Pitch: Where overhead runs of sanitary, waste and vents and rainwater piping
reduce headroom substantially, the pitch may be reduced to 1/8-inch per foot, when
approved by the Engineer. In no case shall horizontal piping runs be installed lower
than 7 feet above finished floor.

F. Supply Piping Installation Requirements:
1. Cross and Inter-Connections: Do not install piping in a manner which can create
a direct cross connection or an inter-connection between potable water and
polluted water, or in a manner whereby a backflow of polluted water into the
potable water system could occur.
2. Valve Installation: Install a valve where each branch leaves the main and at
Plumbing Fixtures to facilitate repairs or replacements of such while the system is
in operation. Unless indicated otherwise on the Drawings install gate valves in
water lines. Install globe valves in water lines where throttling, control or bypass
is required.
3. In the case where fixture fittings are equipped with screw drive stops, and supply
pipes are equipped with stops, such stops shall serve as the shut-off valve.
4. Hose Bibb Installation:
a. Interior: 30 inches above finished floor.
b. Non-Freeze: Unless indicated otherwise, 30 inches above grade.
5. Water Hammer Control: Install Water Hammer Arrestors on each Plumbing
fixture supply branch and for individual runs to remote fixtures or items of
equipment in accordance with P.D.I.-WH201.

6508.22 A2-15400-10 ARRO
INDIAN HEAD –TRAILHEAD RESTROOM Issued with Addendum No.2 on February 12, 2024
 G. Soil or Waste and Vent Piping Installation Requirements:
1. Changes in Direction: Make changes in direction in soil or waste piping using the
appropriate sanitary fittings according to the International Plumbing Code; except
that sanitary tees may be used on vertical stacks, and short quarter bends or
elbows may be used where the change in direction of flow is from horizontal to
vertical.
2. Where it becomes necessary to use short radius fittings because of space
limitations, do so only with prior approval of the Engineer.
3. Slip Joints: Slip joints permitted only in factory fabricated chrome plated trap
seals for fixtures. Use drainage fitting unions for making union connections
wherever practicable. The use of continuous thread bushings is prohibited.
4. Traps: Provide a trap at the connection of each plumbing fixture, drain (except
roof and outside drains) and piece of equipment requiring connection to soil or
waste piping except where noted on the Drawings. Install traps as close as
possible to the fixture, drain or piece of equipment; double trapping not permitted.
5. Test Tees: Install test tees at the base of vertical soil or waste piping runs and at
the base of vertical rainwater conductor runs. Install threaded brass or bronze
plug to close test opening. Test Tees may be omitted where cleanouts are
required at test tee locations.
6. Cleanout Locations: Install cleanouts at locations indicated on the Drawings and
as follows:
a. No more than 50 feet apart in horizontal soil or waste lines of four-inch
nominal diameter or less and not more than 100 feet apart for larger pipes.
b. At each change of direction greater than 45 degrees in soil or waste lines.
c. Locate cleanouts on piping three inches and larger to provide 24 inches of
clearance from obstruction and 18 inches clearance on piping less than three
inches. Where such minimum clearances cannot be obtained report the
situation to the Engineer for further instruction.
d. Size cleanouts same size as the pipe up to and including four inches, and not
less than four inches for larger piping.
7. Vents: Extend vent pipes to not less than 10 inches nor more than 18 inches
above the roofline. Additional installation requirements as follows:
a. Where vents extend to the roofline in less than four-inch pipe size, increase
such to four inches at least one foot below the roof and extend through the
roof.
b. Vents on grade, or in a high foot-traffic area on the roof, shall terminate in a
180° bend with bird screen cap on the end; or extend such vents straight and
install a Hooded Vent Cap on the end.
c. Where vents are taken on horizontal runs of soil or waste piping make such
connections above the center line of the piping, either on the top or at 45
degree angle. Additionally, make such vent connections at least six inches
above the flood-level rim at the highest fixture served by the same piping
run.

6508.22 A2-15400-11 ARRO
INDIAN HEAD –TRAILHEAD RESTROOM Issued with Addendum No.2 on February 12, 2024
3.04 PLUMBING FIXTURE INSTALLATION

A. Fixture Supports: Securely anchor surface-mounted fixture hangers and supports into
the structure using Fasteners as specified in Section 15090.
1. Install fixture Carriers according to manufacturer’s installation instructions using
Fasteners as previously referenced.
2. Provide chrome-plated nuts, cap nuts, screw heads and washers where such are
required in an exposed installation.

B. Fixture Installation:
1. Install wall hung fixtures plumb and square with respect to the visible structure
lines.
2. Set floor-mounted fixtures securely anchored in position symmetrical with the
floor plan.
3. Install water closets with sponge rubber closet flange gaskets; substitutes not
permitted.

3.05 FIELD QUALITY CONTROL

A. Tests: Do not conceal piping systems in any manner until such have been tested and
approved.
1. Furnish tools, materials (including water), equipment and instruments necessary
for pipe testing as specified herein.
2. Repair leaks discovered during testing and repeat the particular test involved.
Repairs and retesting at no increase in Contract price.
3. Perform tests involving water in the test, only when the structure is sufficiently
heated to prevent freezing.
4. Locate test pressure source on upstream side on lines containing check valves.

B. Potable Water Piping Test: Hydrostatic at 50 percent over the system working pressure,
but not less than 100 pounds per square inch. Prior to pressure testing take the following
precautions.
1. Free piping of trapped air prior to testing.
2. Locate test pressure source on upstream sides on lines containing check valves, if
any, and set control valves in open position for test duration.
3. Do not subject equipment, piping specialties or plumbing fixtures to test
pressures.
4. Isolate all such items in lines that may be damaged by test pressures.
5. Maintain test pressure to within 3 psi of initial test pressure, without introduction
of additional pressure, until a visual examination is made of every joint and
connection, but in no case less than 4 hours actual test time.

C. Soil or Waste and Vent System Tests: Perform tests in accordance with applicable
requirements of International Plumbing Code.

6508.22 A2-15400-12 ARRO
INDIAN HEAD –TRAILHEAD RESTROOM Issued with Addendum No.2 on February 12, 2024
 D. Rainwater Conductor Test: Perform same tests on rainwater conductors as used for
sanitary and waste and vent piping testing.

E. Potable Water Systems Disinfection: Following successful testing of systems, perform
disinfection of piping from shut-off valve at source of supply throughout the systems
including connected plumbing fixtures and equipment. Disinfect in accordance with the
following:
1. Flush systems until sediment free.
2. Fill systems with solution of calcium hypochlorite and water containing 50 parts
per million of available chlorine. Use H.T.H., Perchlore, Maxochlor, or equal.
3. Retain solution in systems for at least 24 hours, then drain and thoroughly flush
systems until potable water is test proven comparable to water quality in the
municipal water main.

END OF SECTION

6508.22 A2-15400-13 ARRO
INDIAN HEAD –TRAILHEAD RESTROOM Issued with Addendum No.2 on February 12, 2024
 PROFESSIONAL CERTIFICATION
I, EDWARD JOSEPH VAN ARSDALE,
III, P.E.hereby certify that these
documents were prepared or
approved by me,
and that I am a duly licensed
professional engineer under the laws
of the State of Maryland,
License No. 38561
Expiration Date: 3/31/2024
 PROFESSIONAL CERTIFICATION
I, EDWARD JOSEPH VAN ARSDALE,
III, P.E.hereby certify that these
documents were prepared or
approved by me,
and that I am a duly licensed
professional engineer under the laws
of the State of Maryland,
License No. 38561
Expiration Date: 3/31/2024
 PROFESSIONAL CERTIFICATION
I, EDWARD JOSEPH VAN ARSDALE,
III, P.E.hereby certify that these
documents were prepared or
approved by me,
and that I am a duly licensed
professional engineer under the laws
of the State of Maryland,
License No. 38561
Expiration Date: 3/31/2024