External Walkway and Balcony Refurbishment Works – Galeri Caernarfon

Galeri Caernarfon invites tenders from suitably qualified and experienced contractors for the refurbishment of external walkways, balconies and associated spiral stair structures at Doc Victoria, Caernarfon. The works comprise the replacement and refurbishment of structural steelwork, hot-dip galvanising, protective coating works, associated fixings, testing, inspection and certification.

The contractor will be responsible for survey, design verification where required, fabrication, supply, installation and completion of all associated works. The building will remain operational throughout the contract and contractors must demonstrate how disruption to tenants, visitors and building users will be minimised.

Practical Completion is required no later than 1 March 2027.Project Overview The works relate to the external walkways and balcony structures located on the Dock Elevation and Car Park Elevation of the building. Existing steel members have deteriorated and require replacement.

Galeri intends to appoint a competent contractor to undertake the works in a safe, efficient and cost-effective manner whilst minimising disruption to building users. Scope of Works The successful contractor shall provide all labour, materials, plant, access equipment, supervision, temporary protection and documentation necessary to complete the revised works, including: Site survey, verification of dimensions and identification/marking of all existing deck plates prior to removal.

Careful removal and temporary storage of existing deck plates for later reuse, unless otherwise instructed. Removal, treatment, refitting or replacement of diagonal braces, back-to-back angles and associated bracing members as set out for each elevation and level.

Shot blasting to SA 2.5, re-galvanising and refitting of retained 60 x 60 x 8 RSA braces and other retained members where specified. Fabrication, supply and installation of new galvanised 80 x 80 x 8 RSA diagonal braces and/or 80 x 80 x 8 RSA back-to-back angles where required.

Removal from site and lawful disposal of redundant steel members not required for re-use. Mechanical preparation and repainting of existing primary walkway members, including cantilever supports and UB sections, using the specified protective coating system.

Replacement of deck plate fasteners and bracing fixings with new galvanised fixings of suitable grade. Provision of demarcation barriers, temporary access controls and protection to prevent unauthorised access to unsafe walkways during the works.

Coordination with Galeri and its appointed electrician where existing services require temporary removal and reinstatement. Testing, inspection, certification and provision of all required safety, quality and completion documentation.

Existing Structures The works are anticipated to include the following locations: Dock Elevation Upper Walkway, Spiral Stair Return and Landing. Dock Elevation Lower Walkway, Spiral Stair Return and Landing.

Car Park Elevation Upper Walkway, Spiral Stair Return and Landing. Car Park Elevation Lower Walkway, Spiral Stair Return and Landing.

Existing primary walkway members to all four areas, including cantilever walkway/landing supports and UB sections requiring mechanical preparation and recoating. Dock Elevation Upper - Upper Walkway / Spiral Stair return and Landing: Remove deck plates and store for reuse, all deck plates to be identified prior to removal Remove and dispose of all 80 x 80 x 8 RSA diagonal braces Remove all and dispose of 80 x 80 x 8 RSA back-to-back angles Remove all 60 x 60 x 8 RSA braces – shotblast to S A 2.5, re-galvanise and refit Supply, fabricate and install new galvanised 80 x 80 x 8 RSA diagonal braces and new 80 x 80 x 8 RSA back-to-back angles. Dock Elevation Lower – Lower Walkway / Spiral Stair return and Landing: Remove deck plates and store for reuse all deck plates to be identified prior to removal Remove all 80 x 80 x 8 RSA diagonal braces, shotblast to S A 2.5, re-galvanise and