23-34 New Greenhouse at Marion Senior High School - ADDENDUM NUMBER 1.pdf

Comm. No. 23-34 Addendum Number 1

ADDENDUM NUMBER 1

Smyth County, VA Public Schools

New Greenhouse at Marion Senior High School

5 Design, LLC

5 Design Commission #23-34

January 18, 2024

This Addendum contains three (3) pages. This addendum shall form part of the contract documents and supersedes previously published information. Contractors shall acknowledge receipt of this Addendum on the Bid Form. Failure to do so may result in disqualification of the

Contractor’s bid.

General:

1. All glazing shall be laminated in lieu of tempered. Glazing shall comply with all local, State, and Federal codes, standards, and legislation.

2. A controls system shall be provided for the HVAC, vent, and shading. Provide system equal to Growcom by MicroGrow Greenhouse Systems, Inc. Provide all wiring, conduit, power, etc. to provide a fully functioning automated system to control HVAC, vent, and shading. Mount controller in the new greenhouse in location designated by the owner.

3. The shade cloth shall have a light transmittance level of 70%. The shade cloth system shall be motorized.

Specifications:

1. The Date of Substantial Completion shall be changed to August 30, 2024. Final

Completion shall be within 30 calendar days of Substantial Completion.

Drawings:

- Sheet M100 has been revised. See attached revised sheet M100.

- Sheet E100 has been revised. See attached revised sheet E100.

- Sheet A200, Wall Section ‘A’ – There shall be a foundation drain and stone per the plan and details on sheet S100.

End of Addendum Number 1

A B C

KEYED NOTES:

GAS FIRED UNIT HEATER, MODINE MODEL PTP150S

WITH 150MBH INPUT/120MBH OUTPUT. PROVIDE

WITH VENT KIT WITH 4" VENT THROUGH SIDEWALL AND

HANGING KIT TO SUSPEND FROM STRUCTURE.

EVAPORATIVE COOLER, CHAMPION AIR MODEL ASA51, 1

HP, 2 SPEED UNIT WITH TRANSITION DUCTING INTO

GREENHOUSE, BACKDRAFT DAMPER, AND BLEED OFF

KIT. PROVIDE CONCRETE PAD FOR EQUIPMENT ON

GRADE.

SIDEWALL EXHAUST FAN, ACME DCA36H, 3/4 HP (115

V), 2-SPEED WINDMASTER FAN WITH SLANT WALL

HOUSING, INLET AND OUTLET GUARDS, AND

BACKDRAFT DAMPER.

CIRCULATION FAN, GREEN BREEZE HAF FAN, 12", 1,060

CFM, 1/10 HP MOTOR AT 115 V/1PH.

1-1/4" NATURAL GAS LINE, ROUTED BELOW GRADE TO

EXISTING 2" MAIN FEEDING EXISTING GREENHOUSE.

CONNECT TO EXISTING MAIN DOWNSTREAM OF METER

BEFORE PIPE ENTERS EXISTING BUILDING.

1-1/4" GAS TO NEW UNIT HEATER. PROVIDE SHUT OFF

VALVE AND DRIP LEG WITH FLEXIBLE TUBING

CONNECTED TO UNIT INLET.

1" DOMESTIC WATER SERVICE BELOW GRADE. REFER

TO SITE UTILITY PLAN FOR CONTINUATION AND

COORDINATE CONNECTION TO EXISTING WATER LINE

WITH CIVIL DRAWINGS.

3/4" CW TO EXTERIOR. PROVIDE SHUT OFF VALVE AND

DRAIN DOWN WITH SHUT OFF AND 3/4" HOSE THREAD

OUTLET AT LOW POINT. SLOPE PIPING DOWNSTREAM

OF DRAIN BACK TO OUTLET.

3/4" CW TO EXTERIOR HOSE BIBB (HB), ZURN MODEL

195XL-VB WITH HOSE CONNECTION VACUUM BREAKER

AND 3/4" INLET/OUTLET.

1/4" CW WITH SHUT OFF VALVE TO EVAPORATIVE

COOLER.

NEW WATER LINE SHALL NOT BE INSTALLED UNDER

NEW CONCRETE PAD AT DOOR.

BID ADDITIVE ITEM #1: IN LIEU OF 1" WATER LINE

CONNECTION TO EXISTING WATER LINE, PROVIDE NEW

1-1/2" WATER LINE TO NEW METER ON EXISTING

WATER MAIN. REFER TO CIVIL SITE PLAN FOR

ADDITIONAL INFO.

1/2" PROPANE LINE BELOW GRADE AT 10 PSI FROM

EXISTING TANK TO BE RELOCATED. PROVIDE

SECONDARY PRESSURE REGULATOR TO REDUCE

PRESSURE FROM 10 PSI DOWN TO 11 IN. W.C.. ROUTE

3/4" PROPANE LINE WITH SHUT OFF VALVE FROM

REGULATOR TO GENERATOR INLET.

1" CW UP FROM BELOW GRADE. PROVIDE PRESSURE

REDUCING VALVE, EQUIVALENT TO ZURN MODEL

500XL3 AND SHUT OFF VALVE. ROUTE PIPING TO HOSE

BIBBS ALONG BASE WALL AT 18" AFF.

2 2

1-1/4" G

WINTER

DRAIN DOWN

13 13

HB

GENERAL MECHANICAL & PLUMBING NOTES AND

SPECFICIATIONS:

1. ALL WORK SHALL BE IN ACCORDANCE WITH THE 2018

VIRGINIA UNIFORM STATEWIDE BUILDING CODE, ALL

FEDERAL, STATE, AND CITY CODES, ORDINANCES, AND

STANDARDS.

2. IT IS THE INTENT OF THESE DOCUMENTS THAT THE

CONTRACTOR PROVIDE ALL LABOR, MATERIAL, EQUIPMENT

AND TOOLS FOR THE COMPLETE INSTALLATION OF ALL

WORK SHOWN ON THE PLANS AND/OR DESCRIBED HEREIN,

INCLUDING ALL DEVISES AND CONTROLS REQUIRED TO

PROVIDE A COMPLETE AND FUNCTIONING SYSTEM.

3. THESE DRAWINGS ARE DIAGRAMMATIC IN NATURE. NOT

ALL FITTINGS, OFFSETS, VENTS, OR DRAINS ARE SHOWN.

THE CONTRACTOR SHALL INCLUDE ALL OFFSETS, VENTS,

AND DRAINS AS REQUIRED FOR A FULLY FUNCTIONING

SYSTEM.

4. ALL PIPES SHALL BE COORDINATED WITH DUCTS, PIPES,

LIGHTS, STRUCTURAL SYSTEM AND FRAMING BEFORE

INSTALLATION. MINOR PIPE OFFSETS SHALL BE PROVIDED

AS REQUIRED. MEASUREMENTS FOR VERTICAL

CLEARANCES SHALL BE TAKEN AT THE JOB SITE BEFORE

INSTALLATION OF ANY PIPING.

5. DOMESTIC WATER PIPING SHALL BE COPPER TUBE AND

FITTINGS IN ACCORDANCE WITH ASTM B88, TYPE L HARD

DRAWN COPPER. JOINTS SHALL BE MADE WITH LEAD FREE

SOLDER.

6. NATURAL GAS PIPING SHALL BE SCHEDULE 40 BLACK STEEL

PIPE, ASTM A120/A53-CW OR ASTM/A53 GRADE B

(WELDED OR SEAMLESS); WROUGHT STEEL BUTTWELDING

FITTINGS. GAS COCKS 2 INCHES AND SMALLER SHALL BE

RATED FOR 150 PSI, NON SHOCK WOG, BRONZE

STRAIGHTWAY COCK, FLAT OR SQUARE HEAD, WITH

THREADED ENDS. ALL GAS PIPING CONNECTIONS SHALL BE

PROVIDED WITH A 6 INCH DIRT TRAP, UNION, AND GAS

COCK SHUT OFF VALVE. ALL JOINTS SHALL BE SEALED WITH

CHEMICALLY RESISTANT SEALER APPLIED TO MALE

THREADS OF PIPE CONNECTION. GAS PIPING SHALL BE

INSTALLED WITH A 1/64 INCH PER FOOT DOWNWARD

SLOPE IN THE DIRECTION OF FLOW.

7. THE EQUIPMENT SHOWN IS BEING USED AS A DESIGN

STANDARD AND THE GREENHOUSE MANUFACTURER SHALL

BE RESPONSIBLE FOR SIZING AND PROVIDING ALL

MECHANICAL EQUIPMENT AS REQUIRED FOR A FULLY

FUNCTIONAL SYSTEM. CONTROLS SHALL BE PROVIDED FOR

ALL SYSTEMS AS REQUIRED FOR MAINTAINING OPTIMAL

GREENHOUSE CONDITIONS.

8. STEP FOOTING AT PIPE CROSSING. SEAL WALL

PENETRATION AT HB WITH GRAY URETHANE SEALANT AT

BOTH SIDES OF WALL.

9. IF BID ADDITIVE ITEM #1 IS ACCEPTED, CONTRACTOR SHALL

PROVIDE 1-1/2" REDUCED PRESSURE ZONE BACK FLOW

PREVENTER (BFP) EQUIVALENT TO WATTS, SERIES LFU009

WITH AIR GAP DRAIN PIPED TO TRENCH DRAIN. BFP SHALL

BE LOCATED INSIDE OF GREENHOUSE AND FEED ALL WATER

PIPING WITHIN THE NEW GREENHOUSE.

10. PROVIDE MECHANICAL EQUIPMENT CONTROLLER

EQUIVALENT TO WADSWORTH STEPUP. UNIT CONTROLLER

SHALL CONTROL THE OPERATIONS OF ALL MECHANICAL

EQUIPMENT IN GREENHOUSE. PROVIDE ALL CONTROL

WIRING AND POWER TO CONTROLLER AS REQUIRED FOR

FULLY FUNCTIONAL SYSTEM.

15 KW LP

GENERATOR

R

HB HB PRV

1" CW3/4" CW

PRV

1" CW

HBHB

3/4" CW

M100

MECHANICAL AND PLUMBING PLAN

SCALE = 1/4"=1'-0"

R

EV

IS

IO

N S

N o.

20 Midway Plaza Drive, Suite 300 Christiansburg, VA 24073 540-230-2619 www.5designarchitecture.com

5 Design, LLC

D

AT

E D

ES

C

R

IP

TI

O

N

D

AT

E:

C O

M M

N o:

D R

AW

N

B Y:

C H

EC

KE

D B

Y:

ST

AT

E

PR

O

JE

C T

N o:

12/14/2023

PR

E-

BI

D C

LA

R

IF

IC

AT

IO

N S

1-

-2

M100

D

EC

-3

JN

B

M

EC

H

AN

IC

AL

A N

D P

LU

M

BI

N

G P

LA

N

N

EW

G R

EE

N

H O

U

SE

A T

M

AR

IO

N

S

EN

IO

R

H

IG

H S

C H

O O

L

SM

YT

H

C O

U N

TY

, V

A

GREENHOUSE

ADDENDUM #1

ADDENDUM #1