Basic Information

Reference Number

0000280835

Issuing Organization

PCL/ED, a Joint Venture (Centre Block Rehabilitation Program)

Owner Organization

PWGSC

Project Type

RFPQ - Request for Pre-Qualification (Formal)

Project Number

1039 A

Title

Prequalification Package 1039 A – Fresco Conservator

Source ID

PP.CO.ON.984913.C106429

Agreement Type

Open Bidding (OB)

Details

Location

Canada, Ontario, Ottawa

Job Location

111 Wellington Street, Ottawa, Ontario

Description

PCL\ED, a Joint Venture, acting as the Construction Manager (CM), is inviting Bidders to submit their Statement of Qualifications to prequalify to bid on the Fresco Conservator (Subcontractor) portion of Centre Block Rehabilitation Project.

The project is located at 111 Wellington Street, Ottawa, Ontario. This work will be performed at the successful bidder’s studio/workshop facility.The subcontractor must demonstrate as requested in 6.3.2 Major Projects and Ongoing Projects and 6.3.3 Comparable Projects that they are capable of completing the following:

Fresco Restoration/Conservation Projects: Bidders must demonstrate they have been a technical authority and undertaken restoration/conservation projects on frescoes (buon fresco/mezzo fresco) that includes their technical assessment, full conservation treatment including restoration, structural treatment, handling, packing, housing and storage while following conservation standards that recognize and mitigate risk from physical forces and indoor climate.

Please note: Materials, techniques, and quality workmanship will follow known professional standards like the Code of Ethics and Guidance for Practice of the Canadian Association for Conservation (CAC/ACCR) or international equivalent.
For the purposes of this prequalification, fresco is defined as per The Getty Institute's "Art and Architecture Thesaurus:
“Paintings made by the technique of fresco painting, which is a mural painting technique in which permanent pigments, dispersed in water, are painted on freshly laid lime plaster.”
In other words, a fresco refers to a painting that involves water-soluble paints applied to wet lime plaster. Once the plaster sets, the painting becomes an integral part of the wall.
Bidders are to identify each of their two fresco projects as being buon fresco (can also incorporate mezzo fresco, secco techniques) at Appendix 4, and provide all details as noted.
Bidders must demonstrate that they personally have successfully executed and directed hands-on comprehensive conservation treatments to significant works of art executed with fresco techniques.
The following is a description of buon fresco technique written by Paolo and Laura Mora, and Paul Philippot from The Conservation of Wall Paintings:

Fresco techniques

According to its etymology, fresco refers to any painting executed on fresh plaster whilst still moist in such a way that the pigments are fixed by the carbonatization of the lime (calcium hydroxide) contained in the plaster ground. The pigment, mixed with water, is brushed onto the surface of the rendering or onto whitewash with a lime base. When the latter begins to dry, the saturated calcium hydroxide solution migrates towards the surface where it reacts with the carbon dioxide in the air to form calcium carbonate, as the water evaporates:

Ca(OH)2 + CO2 = CaCO, + H20

During the course of this reaction, the pigments become bounded by the crystallization of the superficial carbonate, which fixes them as if they became an integral part of a slab of limestone. The carbonatization takes place from the surface inwards and after a certain time forms a surface crust which slows down the reaction within. As the surface hardens first, the superficial paint layer is generally more resistant than the underlying structure.

From Mora, Paolo, Laura Mora and Paul Philippot. The Conservation of Wall. Paintings. (Boston: Butterworths & Company, Limited), 1984, Pg. 12

Previous work performing comparable fresco conservation/restoration scopes of work within buildings with similarities to the scope of services at 1.2 and projects considerations at 1.3 this RFQ will be scored higher.
Bidders must explain which portions of the above work the subcontractor completed with their own forces and which portions are completed through Sub-subcontractors.
Explain productivity tracking and how you propose to keep on schedule.
Management of multiple shifts.
Due to design and/or industry capacity limitations the design packages may be split into multiple smaller packages.

Dates

Publication

2024/10/23 05:44:51 PM EDT

Bid Intent

Optional

Bid Intent Deadline

2024/10/31 02:00:00 PM EDT

Question Acceptance Deadline

2024/11/12 02:00:00 PM EST

Questions are submitted online

Closing Date

2024/11/19 02:00:00 PM EST

Contact Information

Ross Masters

613-978-2956

rmasters@pcl-ed.com

Kelly Ann Purdy

613-806-0494

kpurdy@pcl-ed.com

Bid Submission Process

Bid Submission Type

Electronic Bid Submission

Pricing

No Pricing

Bid Documents List

Item Name	Description	Mandatory	Limited to 1 file
Bid Documents	Documents defining the proposal	Yes	No
No entries

Additional Bidding Instructions

1. Intent to Submit Deadline and Closing Date and Time

Please advise of your intent to submit a Technical Submission, and confirmation that your firm meets all the eligibility requirements as set out in 3.0, in response to this RFQ by email to the contact noted at 2.3.2 before 2:00:00 PM, Ottawa local time, October 31, 2024.
The SOQ submission must be uploaded to MERX no later than: November 19, 2024, at 2:00:00 pm (Ottawa-ON Local Time).

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