A photograph of a bracket is a useful starting point, but it rarely defines a complete stone cladding fixing requirement. Similar-looking parts may have different thicknesses, projections, holes, adjustment ranges and interfaces. A useful RFQ describes the assembly and identifies which design decisions have already been approved.
Begin with the panel and support arrangement
Provide the panel layout, stone type, panel dimensions and thickness, together with the supporting structure and fixing arrangement. Include the relevant approved design loads or engineering documents where required. Do not ask the supplier to infer a design load from a product photograph.
ASTM C1242 addresses selection, design and installation considerations for dimension stone attachment systems. Its scope treats stone anchorage as a system subject to gravity and applied loads. Refer to the edition required by the project and the responsible engineer’s design documents. ASTM guide scope.
Define bracket geometry and adjustment
- Part number and drawing revision.
- Bracket type, overall dimensions, thickness and projection.
- Hole diameters, slot sizes, positions and orientation.
- Required adjustment and installation clearances.
- Interfaces with the stone, rail, body anchor and substrate fixing.
- Material, finish and the inspection requirements shown on the drawing.
Names such as L bracket, Z bracket or body anchor describe product families, not a universal load rating. If an existing component is being replaced, identify the original assembly and have the proposed replacement checked against the approved design.
Separate component supply from engineering acceptance
A material certificate does not establish the load capacity of a complete facade connection. Capacity and suitability depend on the project configuration and the relevant verification. Agree who is responsible for design, calculations, testing and installation approval before ordering.
If tests are required, specify what assembly or material is tested, the test method, sampling and acceptance criteria. Do not transfer a result from a different stone, geometry or substrate without an engineering basis. This purchasing checklist supplies no anchor capacity, spacing rule or installation design.
List every item in the fixing package
Check whether the quotation includes only brackets or also rails, anchors, bolts, nuts, washers, shims and spacers. Provide quantities by part number, not just an estimated number of complete ‘sets’. Show which pieces are handed, mirrored or used only at particular locations.
For mixed assemblies, specify the materials and finishes of the connecting parts as well as the visible bracket. Identify any project requirements for separation between materials, corrosion exposure, adjustment and access for installation. The responsible designer should resolve these interfaces.
Make the supplier’s response easy to review
Ask for a line-by-line response listing the proposed part, material, finish, quantity and document scope. Keep technical deviations separate from the price. Attach a single controlled drawing register so that quantities and revisions can be reconciled before release.
WISINE’s stone cladding fixing range includes product discussions for Z brackets, body anchor brackets and related hardware. Send the project drawings and supply scope for review; final selection and installation approval remain project-specific.
Discuss Your Specification with WISINE
Send the product type, material requirement, dimensions, quantity and current drawing or specification for review.
Sources and Further Reading
This article supports procurement preparation. Use the approved drawing, applicable standard edition and project requirements for design and acceptance decisions.
