2026-0508 59125413.JLM - Plainwell Garage Generator - ADDENDUM 1 DRAWING.pdf

PDF 938 KB Posted May 7, 2026

Attached to: 591/25413. JLM; Plainwell Garage Generator
Solicitation number: RFQ 171 260000000250 3
Issued by: Allegan County, Michigan

About this file

Written by GovTribe AI · May 8, 2026

This is an Addendum 1 Drawing document for the Plainwell Garage Generator project issued by the Michigan Department of Technology, Management and Budget, Facilities and Business Services Administration, Design and Construction Division, in coordination with Century Facilities Design (CAE). The project involves the addition of a 125-kilowatt generator to the M.D.O.T. Plainwell Garage located at 596 11th Street, Plainwell, Michigan 49080, in Allegan County. The electrical plan drawing (Sheet E2.0) was issued for bid and construction on April 10, 2026, with Addendum 1 issued on May 8, 2026. The drawing provides detailed specifications for the generator equipment pad installation, natural gas line routing and connections, electrical interconnections, and auxiliary systems including an automatic transfer switch (ATS), annunciator panel, emergency stop, and surge protection device (SPD).

The technical specifications require an 8-inch concrete pad with reinforced #5 bars at 12-inch on-center spacing, 4,000 PSI minimum compressive strength, and compliance with ACI 318 and ACI 301 standards. The natural gas supply infrastructure includes a 1-1/2 inch natural gas line routed along the building with gas pressure regulation equipment (Pietro Fiorentini regulator rated at 2 PSIG inlet, 7 inches W.C. outlet), a gas meter upgrade to accommodate 4,361 CFH connected load, and a dirt leg sediment trap. The generator requires coordination with the utility to increase gas service capacity and pressure as necessary. Contractors must submit concrete mix designs from an approved independent testing firm at least 10 working days prior to construction commencement and coordinate engineer inspection of the prepared site before concrete pouring. All exposed gas piping must be painted and supported with stainless steel unistrut supports.

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Other files

File	Type	Posted
Drawings 25413.pdf	PDF	May 7, 2026
2026-0508 Addendum 1 Plainwell Generator.pdf	PDF	May 7, 2026
Pre-Bid Sign-In Sheet (591.25413.JLM) (Apr 28, 2026).pdf	PDF	May 7, 2026
Specifications 25413.pdf	PDF	May 7, 2026
Advertisement 25413.pdf	PDF	May 7, 2026
Service Disabled Veteran Owned Business Info Sheet 2025.pdf	PDF	May 7, 2026

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DEPARTMENT OF TECHNOLOGY, MANAGEMENT AND BUDGET

STATE OF MICHIGAN

ADAM P. LACH, RA, DIRECTOR

FACILITIES AND BUSINESS SERVICES ADMINISTRATION

DESIGN AND CONSTRUCTION DIVISION

M.D.O.T. PLAINWELL GARAGE

PLAINWELL, MICHIGAN

GENERATOR ADDITION

Know what's below.

before you dig.Call

M.D.O.T. PLAINWELL GARAGE

596 11TH STREET

PLAINWELL, MICHIGAN 49080

ALLEGAN COUNTY

SHEET NO.

PROJECT NO:

DWG. SCALE:

DESIGN BY:

DRAWN BY:

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P L U R I B U E

S U N U M

C I R C U M S P I C E

S I Q U ERE I S PENI NSULAM AMOENA

DEPARTMENT OF TECHNOLOGY, MANAGEMENT AND BUDGET

STATE OF MICHIGAN

ADAM P. LACH, RA, DIRECTOR

FACILITIES AND BUSINESS SERVICES ADMINISTRATION

DESIGN AND CONSTRUCTION DIVISION

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A. HOLLAND

M. TIPPING

E2.0

AS NOTED

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MDP

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LP-C

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LP-F

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RADIATOR ON WEST SIDE

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ANNUNCIATOR PANEL

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EMERGENCY STOP

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ATS

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EX. ELECTRICAL METER

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PROPOSED GENERATOR LOCATION, 125KW

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GENERATOR EQUIPMENT PAD. SEE DETAIL THIS SHEET

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ANNUNCIATOR PANEL

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ATS

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LP-F (AUX. POWER)

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EMERGENCY STOP

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EX. OVER HEAD RISER

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EX. UTILITY OVERHEAD LINES

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ATS

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MDP

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BOILER ROOM

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MENS LOCKERS

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STORAGE #3

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PARKING GARAGE

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1-1/2" NG LINE TO GENERATOR ROUTE NATURAL GAS ALONG BUILDING

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EX. GAS UTILITY SUPPLY

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TO EX. UTILITY POLE

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UPGRADE GAS METER BY GAS SERVICE SEE DETAILS

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EXISTING STAIR COLUMN

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GAS PRESSURE REGULATOR EQUAL TO PIETRO FIORENTINI 2 PSIG INLET, 7" W.C. OUTLET

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1-1/2" UG NG TO GENERATOR SEE DETAIL

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AutoCAD SHX Text GENERAL NOTES: : 1. SEE SINGLE LINE DIAGRAM AND GENERATOR INTERCONNECTION RISER DIAGRAM ON SEE SINGLE LINE DIAGRAM AND GENERATOR INTERCONNECTION RISER DIAGRAM ON SHEET E6.0 FOR CONDUIT AND WIRE SIZES AND QUANTITIES.

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

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ELECTRICAL PLAN

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NORTH

AutoCAD SHX Text PLAN NOTES: - (SYMBOL DENOTES PLAN NOTE) : - (SYMBOL DENOTES PLAN NOTE) - (SYMBOL DENOTES PLAN NOTE) 1. MOUNT SPD ABOVE EXISTING MAIN FUSED DISCONNECT. MOUNT SPD ABOVE EXISTING MAIN FUSED DISCONNECT. 2. COORDINATE ENGINEER INSPECTION OF PREPARED SITE BEFORE POUR OF CONCRETE. COORDINATE ENGINEER INSPECTION OF PREPARED SITE BEFORE POUR OF CONCRETE.

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1. PROVIDE PVC SLEEVES FOR ALL PENETRATIONS THROUGH GENERATOR EQUIPMENT PAD. SEE PROVIDE PVC SLEEVES FOR ALL PENETRATIONS THROUGH GENERATOR EQUIPMENT PAD. SEE ELECTRICAL FOR CONDUIT SIZES AND QUANTITIES. CONFIRM GENERATOR EQUIPMENT PAD SIZE AND SLEEVE LOCATIONS WITH ENGINEER BASED ON GENERATOR SUBMITTAL DRAWINGS.

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NOTES

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GENERATOR + 12" (TYP.)

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3" CLR.

AutoCAD SHX Text #5 BARS @ 12" o.c.

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#5 BARS CONTINUOUS, T. & B. AT SLAB PERIMETER

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3/4" CHAMFER (TYP.)

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GRADE

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T/PAD EL.

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%%USECTION VIEW

AutoCAD SHX Text CONCRETE SPECIFICATIONS: 1. THE FOLLOWING REFERENCE DOCUMENTS, THEIR COMMENTARIES, AND THE STANDARDS REFERENCED THEREIN, APPLY TO THE FOLLOWING REFERENCE DOCUMENTS, THEIR COMMENTARIES, AND THE STANDARDS REFERENCED THEREIN, APPLY TO DESIGN, FABRICATION, AND CONSTRUCTION PRACTICES TO BE ADHERED TO WITH REGARD TO THE WORK SHOWN ON THE DRAWINGS: A. BUILDING CODE REQUIREMENTS FOR REINFORCED CONCRETE (ACI 318, LATEST EDITION). B. SPECIFICATIONS FOR STRUCTURAL CONCRETE FOR BUILDINGS (ACI 301, LATEST EDITION). 2. COLD WEATHER PROTECTION SHALL BE IN ACCORDANCE WITH ACI 306, IN HOT WEATHER, COMPLY WITH ACI 305. COLD WEATHER PROTECTION SHALL BE IN ACCORDANCE WITH ACI 306, IN HOT WEATHER, COMPLY WITH ACI 305. 3. SUBMIT (4) COPIES OF THE PROPOSED MIX DESIGN PREPARED BY AN APPROVED INDEPENDENT TESTING FIRM AT LEAST SUBMIT (4) COPIES OF THE PROPOSED MIX DESIGN PREPARED BY AN APPROVED INDEPENDENT TESTING FIRM AT LEAST (10) WORKING DAYS PRIOR TO THE PROPOSED START OF CONSTRUCTION. SELECT PROPORTIONS ACCORDING TO ACI 301, SECTION 3.9. APPROVAL OF THE MIX IS REQUIRED PRIOR TO PLACEMENT OF CONCRETE. 4. PROVIDE (3/4) INCH BEVELS ON ALL PERMANENTLY EXPOSED EDGES OF CONCRETE SURFACES. PROVIDE (3/4) INCH BEVELS ON ALL PERMANENTLY EXPOSED EDGES OF CONCRETE SURFACES. 5. MINIMUM COMPRESSIVE STRENGTH (F'c): 4,000 PSI. MINIMUM COMPRESSIVE STRENGTH (F'c): 4,000 PSI. 6. MINIMUM CEMENT CONTENT: MINIMUM CEMENT CONTENT: (6.0) SACKS PER CUBIC YARD FOR 4,000 PSI CONCRETE. CEMENT PER ASTM STANDARD C-150 OR ASTM STANDARD C-595. USE 20% MAXIMUM FLY ASH BY WEIGHT. 7. MAXIMUM WATER TO CEMENT RATIO: MAXIMUM WATER TO CEMENT RATIO: (5) GALLONS PER SACK (0.44). 8. ENTRAINED AIR: 5% TO 7% ENTRAINED AIR: 5% TO 7% 9. AGGREGATES: AGGREGATES: COARSE ASTM STANDARD C-33 MDOT 6A OR 6AA; FINE ASTM STANDARD C-33 MDOT SAND 2NS. 10. WELDED WIRE FABRIC (FLAT SHEET) SHALL CONFORM TO ASTM STANDARD A-496 AND A-497 REQUIREMENTS. WELDED WIRE FABRIC (FLAT SHEET) SHALL CONFORM TO ASTM STANDARD A-496 AND A-497 REQUIREMENTS. 11. AIR ENTRAINING ADMIXTURES: AIR ENTRAINING ADMIXTURES: ASTM C260 NEUTRALIZED VINSOL RESIN COMPATIBLE WITH SUPERPLASTICIZER (IF USED). 12. SUPERPLASTICIZER ADMIXTURES: ASTM C494 TYPE F OR G. SUPERPLASTICIZER ADMIXTURES: ASTM C494 TYPE F OR G. 13. WATER REDUCER/RETAINERS CONFORMING TO C-494, TYPE A OR D. WATER REDUCER/RETAINERS CONFORMING TO C-494, TYPE A OR D. 14. POZZOLONIC ADMIXTURES: ASTM C618, TYPE F, LOSS ON IGNITION LIMITED TO 4%. POZZOLONIC ADMIXTURES: ASTM C618, TYPE F, LOSS ON IGNITION LIMITED TO 4%. 15. CONCRETE CURING: CONCRETE CURING: WET BURLAP CURE FOR 7 DAYS PER ACI RECOMMENDED PRACTICE. 16. ALL HORIZONTAL SURFACES TO BE BROOM FINISHED. ALL VERTICAL SURFACES TO BE SMOOTH FORM FINISH. PATCH ALL HORIZONTAL SURFACES TO BE BROOM FINISHED. ALL VERTICAL SURFACES TO BE SMOOTH FORM FINISH. PATCH HOLIDAYS AND REMOVE FINS. SNAP FORM TIES AND PATCH TIE HOLES WITH GROUT ON ALL EXPOSED SURFACES.

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GENERATOR + 12" (TYP.)

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GENERATOR + 12" (TYP.)

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3" CLR. (TYP.)

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%%UPLAN VIEW

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GENERATOR

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SLAB

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12" MIN COMPACTED GRANULAR FILL

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8" CONCRETE PAD

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CONC. PAD

AutoCAD SHX Text GAS PRESSURE REGULATOR EQUAL TO PIETRO FIORENTINI 2 PSIG INLET, 10" W.C. OUTLET 1665 CFH

AutoCAD SHX Text PROVIDE STAINLESS STEEL UNISTRUT SUPPORTS AS NEEDED TO SUPPORT AND PROTECT PIPE. PAINT EXPOSED GAS PIPING

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1-1/2" NG (2 PSIG) FROM METER

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GENERATOR

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FLEXIBLE CONNECTION

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SCALE: NONE

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GENERATOR PIPING DETAIL

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SCALE: NONE

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GAS METER DETAIL

AutoCAD SHX Text DIRT LEG (SEDIMENT TRAP) INSTALLED IN BOTTOM RUN OPENING OF TEE AS SHOWN. MINIMUM 6" ABOVE GRADE.

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GAS METER

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4361 CFH CONNECTED LOAD

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ROUTE 1-1/2" NATURAL GAS LINE ALONG BUILDING

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1-1/2" NG (2 PSIG) TO GENERATOR

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NG TO BUILDING

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2" NG (2 PSIG)

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GAS SERVICE CAPACITY AND PRESSURE TO BE INCREASED AS NECESSARY BY UTILITY

AutoCAD SHX Text GAS PRESSURE REGULATOR EQUAL TO PIETRO FIORENTINI 2 PSIG INLET, 7" W.C. OUTLET APPROX. 2700 CFH CAPACITY

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BALL VALVE (TYPICAL)

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GAS SUPPLY BY UTILITY

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3" FLG (VIF)

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GAS COCK (TYPICAL)

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NOTES: PAINT EXPOSED GAS PIPING PER SPECIFICATIONS

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SCALE: NO SCALE

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EQUIPMENT PAD DETAIL

Sheets and Views

E1.0

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E1.0

E2.0

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E2.0

E6.0

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E6.0

PLAINWELL SITE PLAN - REFERANCE DRAWING

File details come from the government source that posted it. Updated May 8, 2026.