25235 Nuabinway Garge Roof - Addendum 1.pdf

PDF 630 KB Posted

Attached to
751/25235. ABG; Naubinway Wildlife Garage Roof Replacement
Solicitation number
RFQ-171-250000000571-2
Issued by
Livingston County, Michigan

About this file

This is an Addendum No. 1 issued by U.P. Engineers & Architects, Inc. for the Department of Technology, Management and Budget (DTMB) regarding the Naubinway Wildlife Garage Roof Replacement project located in Naubinway, Michigan. The addendum, dated August 14, 2025, modifies the original project specifications, including details for metal roof panels and roof framing. The project involves removing existing metal roofing and fiber board, exposing existing roof trusses, and installing new 5/8" OSB and 2x4 purlins on top of existing purlins, followed by 24-gauge metal roofing. A mandatory pre-bid walkthrough was conducted on August 6, 2025, at 1:00 PM, with attendees from UPEA, Ripman Construction, NK Environmental, and DTMB.

The addendum provides specific technical specifications for the architectural standing seam metal roofing, including 24-gauge prefinished steel sheets with 18-inch nominal width, a flat profile, and standing snap-interlocked seams. The DNR will remove trees and concrete culvert prior to construction. The roof framing plan details the installation of new purlins directly on top of existing purlins, with lap joints specifically instructed not to align. The revised roof detail includes additional components such as a new ice dam membrane, new metal drip edge, fully vented aluminum soffit, and metal fascia, with precise instructions for installation and sizing.

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Text version

707 Ashmun Street Sault Ste. Marie, MI 49783

906-635-0511 • 800-867-0511 • Fax: 906-635-0612

Offices also in:

Houghton

Iron Mountain Ishpeming Marinette

U.P. Engineers & Architects, Inc. www.UPEA.com

[M12-05333]

ADDENDUM NO. 1

TO THE

DTMB – Naubinway Wildlife Garage Roof Replacement (ISID) Naubinway, MI

ADDENDUM NO. 1 is issued August 14, 2025, to clarify, modify, and/or change the original plans and specifications issued by UP Engineers and Architects. This ADDENDUM NO. 1 is hereby made part of the Contract Documents for the contract noted below.

File No. 751/25235.ABG Naubinway Wildlife Garage Roof Replacement (ISID)

Please acknowledge receipt of this ADDENDUM NO. 1 on the appropriate blank on the Bid Form and also include this addendum with the bid package.

GENERAL

1. See attached mandatory pre-bid walkthrough sign-in sheet.

2. The DNR will remove the trees and concrete culvert prior to construction.

SPECIFICATIONS

3. Specification Section 07 41 13 Metal Roof Panels

a. REMOVE 2.1; B: Metal Roof Panels and REPLACE with the following.

b. Architectural Standing Seam Metal Roofing:

i. Description: Factory-formed metal roofing panel system with concealed fasteners.

ii. Panels:

1) Steel Sheet:

a) Material: Prefinished.

b) Base Metal Thickness: 24 gauge

iii. Nominal Width: 18 inches

iv. Profile: Flat

v. Seams:

1) Type: Standing, snap interlocked.

2) Height: 1 inch

3) Color: As selected by Owner from manufacturer’s standard colors.

PLANS

4. Drawing Sheet A101: REVISE Keynote 1 to read: REMOVE EXISTING METAL

ROOFING AND FIBER BOARD TO EXPOSE EXISTING ROOF TRUSSES.

ROOF PURLINS. PURLINS SHALL REMAIN IN PLACE. INSTALL NEW 5/8”

OSB 2x4 PURLINS ON TOP OF EXISTING PURLINS, 5/8” OSB VERTICALLY

UP AND DOWN ROOF AND 26 GA METAL ROOFING.

a. Additional clarification for the note above provided on Drawing Sheets A1- A1 and A1-A2 attached to this Addendum.

5. REPLACE all references to 26 gauge metal with 24 gauge metal to reflect the information above.

END OF ADDENDUM NO. 1

Prepared by:

U.P. Engineers & Architects, Inc

A1 A101

B1 A101

EX

IS

TI

N

G R

O O

F

TR

U

SS

ES

'-0

" O .C

LAP JOINTS SHALL NOT ALIGN

EXISTING 2x4 PURLINS @ 2'-0" O.C.

INSTALL NEW 2x4 PURLINS DIRECTLY ON TOP

5/8" OSB UP

AND DOWN

ROOF AS

SHOWN

R

ID

G E

A1-A2

DATE: JOB No:DRAWN: DRAWING:

Houghton Iron Mountain Ishpeming Sault Ste. Marie Marinette 8-14-2025 M12-05333

NAUBINWAY FIELD OFFICE ROOF REPLACEMENT

JHR A1-A1

ROOF FRAMING PLAN

1/8" = 1'-0"1 ROOF FRAMING PLAN

N

EXISTING WALL

1' - 4" VIF

NEW FULLY

VENTED ALUM

SOFFIT

EXISTING ROOF TRUSSES TO REMAIN

NEW 5/8" OSB

NEW ICE DAM MEMBRANE

NEW 26 ga METAL ROOFING

NEW METAL

DRIP EDGE

NEW METAL

FASCIA ON

EXISTING SUB-

FASCIA AND

PURLINS. SIZE

SHALL BE AS

REQUIRED TO

COVER SUB-

FASCIA AND

PURLINS.

EXISTING 2x4 PURLINS TO REMAIN

NEW 2x4 PURLINS DIRECTLY ON TOP OF

EXISTING PURLINS. LAP JOINTS SHALL

NOT ALIGN.

THIS DETAIL SHALL REPRESENT BOTH

COLD STORAGE AND HEATED

STORAGE. INSULATION AND OTHER

INFORMATION BELOW TRUSS ON

HEATED STORAGE DETAIL SHALL

REMAIN.

DATE: JOB No:DRAWN: DRAWING:

Houghton Iron Mountain Ishpeming Sault Ste. Marie Marinette 8-14-2025 M12-05333

NAUBINWAY FIELD OFFICE ROOF REPLACEMENT

JHR A1-A2

ROOF DETAIL

1 1/2" = 1'-0"1 REVISED ROOF DETAIL

Insert from: "M12-05333-DNR-NAUBINWAY ROOF-ADD 1 DWGS.pdf"
A1-A1 - ROOF FRAMING PLAN
A1-A2 - ROOF DETAIL

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