00015915 Addendum1.docx

INVITATION TO BID

ADDENDUM NO. 1

Requests for clarification, requests for change, and protests of this Addendum are due no later than:

04/09/2026 @ 5:00PM.

This Addendum modifies the Invitation To Bid (ITB) document(s) only to the extent indicated herein. All other areas not changed or otherwise modified by this Addendum remain in full force and effect. This Addendum is hereby made an integral part of the ITB document. Bidder must be responsive to any requirements of this Addendum as if the requirements were set forth in the ITB. Acknowledge receipt of this Addendum by indicating its number in the spaces provided on Attachment A, Form A-1 Addenda Acknowledgement. Failure to do so may result in Bid rejection. See the ITB regarding pre-opening modifications of Bids, where to send Bid modifications, requests for clarification or change and protests of this Addendum, and the deadlines for the foregoing.

THE PURPOSE OF THIS ADDENDUM IS TO: Provide the Mandatory pre-bid meeting sign in roster as well as Agenda. Provide information on 1 approved equal brand Kingspan-KingSeam has been approved for this project as an approved equal brand. See attached data sheets for further information. Kingspan-KingSeam would be required to meet the below selected gauge for exterior and interior, width, and thickness. Modify language in Exhibit 5 Statement of Work. Delete and Replace Exhibit 6 Plans

· Document labelled “00015915 Prebid Meeting Agenda.doc” has been uploaded into the OregonBuys Attachment Tab.

· Document labelled “00019515 Prebid Sign In Sheet.docx” has been uploaded into the OregonBuys Attachment Tab

· Approved Alternate Kingspan-KingSeam:

Gauge: Exterior: 24, ga Interior: 26, ga Width: 40” Thickness: 5” See document labelled “00015915 Kingspan Kingseam Product Data Sheet.pdf” as posted in OregonBuys attachments tab for further product details.

· Document labelled “00015915 Exhibit 5 Statement of Work.Doc” Section Detailed Project Specifications , is amended as follows. New language is Bold and Underlined

1. Material list:

· Insulated Metal Panel Roofing

· Basis of design is All Weather Insulated Panels Standing Seam SR2

· 5” panel thickness

· 40” panel width

· Exterior standing seam 26ga or heavier

· Interior metal 26ga 24ga or heavier

· R41 minimum

· Concealed fastening per manufacturer’s recommendations

· Exterior and interior panel color to be white, Silicone Modified Polyester Two-Coat System paint finish

· Inside and outside ridge cap, color to be white

· Request for substitutions will be considered

· Commercial Grade Gutters and Downspouts

· Compatible with IMP roof system

· 24ga or heavier

· Color to match existing exterior be white

· Downspout size and locations shall match existing, square to round adapters into existing 4” drainpipes.

2. Outline of work:

· Remove and dispose of existing metal trim, gutters, downspouts, fiberglass panels, roof metal, and insulation.

· Roof type shall be gable, match existing roof pitch and slope from the center ridge line equally to both sides.

· Provide and install insulated metal panels per manufacturer’s recommendations.

· Use two part closed cell foam insulation to seal void between panels at ridge and around any other penetrations through the roof.

· Provide and install white commercial grade gutters on both eaves with downspouts to pavement. Downspout location shall match exiting PVC drainpipes.

· Provide and install new square to round PVC adapters on existing PVC downspout drainpipes.

· Provide and install zee flashing or straight hemmed flashing behind and/or below new gutter to seal up and cover existing wall panels.

· Provide and install custom white gable trim at the north end of the building.

· Contractor shall ensure gable trim extends down enough to cover gap between the new roof and existing metal siding, as well as cover any existing holes in wall panels.

· Contractor shall ensure wall panels are sealed with outside form fit closure. Use mastic between roof metal and gable trim.

· If face of gable trim exceeds 5”, include stiffener or two separate pieces of trim to reduce oil canning.

· Provide and install custom white side wall flashing at the south end of the building where the new roof will step down approximately 5” to existing wash bay roof.

· Provide and install reverse ridge cap on the interior.

· Provide and install ridge cap system as per manufacturer's recommendations.

· Existing ABS plumbing vent will need to be cut off below the roof deck and a new ABS vent pipe will need to be installed 18” above finish roof.

· Existing GPS antenna white cap and cable will be removed by others prior to start of construction. The 3” galvanized pipe will remain in place. Once contractor installs IMPs and roof jack, ODOT will coordinate with others to re-install GPS components.

· Existing radio antenna and weather head will be removed from the galvanized pole prior to construction by ODOT Wireless. Contractor will need to coordinate with CPM to schedule ODOT wireless onsite, day of work. ODOT wireless will disassemble prior to Contractor removing roof panel and will immediately reassemble radio antenna and weather head once new IMP is in place. The weather head and antenna pipe will remain in place; contractor is responsible to core drill IMPs and install roof jacks.

· The three roof top exhaust fans are no longer needed. Fans will be disconnected by ODOT electricians, Contractor shall remove and dispose of fans as part of this project.

· The three radiant tube heater exhaust vents will need to be removed and replaced. Contractor is responsible to work with a licensed HVAC contractor to remove existing B-vents and install new vents that extend approximately 24” above finish roof. Contractor is responsible for ensuring vents are mounted plumb, solid, and 100% sealed by properly sized rubber flashing boot.

· The furnace concentric PVC vent is to remain in place. Contractor will need to extend vent a minimum of 24” above finish roof. Provide and install new roof jack once IMP and ridge cap are in place.

· Field verify all dimensions prior to ordering material.

· Prepare IMPs onsite; provide extra precautions to ensure IMPs are not damaged during prepping, flying, or setting.

· Verify all materials onsite prior to any demolition.

· Verify weather conditions will hold throughout IMP installation or have plan in place to temporarily dry-in any areas that have been torn off.

· Document labelled “00015915 Exhibit 6 Plans.pdf” is deleted in its entirety and replaced with document labelled “00015915 Exhibit 6 Plans Revised.pdf”.

Summary of Changes to Exhibit 6 Plans

· Drawing 1/A102 exhaust vent note revised to “Remove and dispose of roof exhaust vents”.

· Drawing 2/A102 remove note to reinstall exhaust vent.

ITB_ADDENDUM, S006-G031521

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