Public Tender Documentation for Steel Stair Supply and Installation

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A strong public tender for a steel staircase defines the exact scope, provides dimensioned drawings, specifies materials and finishing, and sets clear installation and acceptance requirements. Clear documentation lets bidders price comparable work and reduces change orders after award.

Define the scope of supply and installation

Start by stating exactly what the tender covers: fabrication, delivery, installation, and any connection to the building structure. Specify whether the staircase is a straight, L-shaped, U-shaped or spiral design, and the number of floors it serves.

List what is excluded, such as concrete work, openings, or handrail-to-wall fixings by others. Clear boundaries prevent disputes between bidders and the contractor who handles adjacent works.

Provide complete drawings and measurements

Bidders can only compare offers if they price the same geometry. Attach plans, elevations and sections with dimensions for rise, going, landing sizes, and clear headroom. Note the site conditions and state whether on-site measurement is required before fabrication.

Floor-to-floor height and opening dimensions
Wall and slab construction details
Access route for transporting steel elements

Specify materials and finishing

Name the steel grade, section profiles, plate thicknesses and tread material in the tender. Indicate the required corrosion protection, such as hot-dip galvanizing followed by powder coating, and the color or finish standard. For exterior or humid locations, this matters greatly for long-term performance.

Ask bidders to state the material and finish they offer, so the evaluation compares like with like.

Set safety and code requirements

Require compliance with the applicable Israeli standards and building regulations for stairs, guardrails and handrails. The railing standard SI 1142 is a relevant reference point. Exact dimensional values such as baluster spacing, guard height and load requirements should be confirmed with the project engineer and written into the tender rather than left to bidder interpretation.

Request that bidders confirm their design responsibility and any structural calculations they must provide.

Define installation, timing and acceptance

Describe the installation method, site access, working hours and coordination with other trades. State the expected sequence, such as shop drawings approval before fabrication, then delivery, then installation. Clarify who provides lifting equipment and site protection.

Set acceptance criteria: dimensional tolerances, alignment, fixing quality, and a final inspection checklist signed by the engineer.

Request a structured bid format

Ask bidders to submit prices in a breakdown: fabrication, finishing, delivery, installation and any separate items. A structured bid format makes evaluation transparent and helps identify missing scope. Require a shop drawing submission and a short method statement with each offer.

Include a clause for documentation at handover, such as drawings as built and maintenance instructions for the finish.

Frequently asked questions

Should the tender include shop drawings?

Not necessarily from the start, but require bidders to submit shop drawings for approval before fabrication begins. This confirms dimensions and details on site before any steel is cut.

How detailed should the material specification be?

Specify steel grade, profile types, thicknesses, and the corrosion protection and finish required. The more precise the specification, the more comparable the bids will be.

Who is responsible for on-site measurement?

State this clearly in the tender. Either the contractor measures on site before fabrication, or the client provides verified measurements, and the choice affects responsibility for fit issues.

Do we need to specify safety standards?

Yes. Reference the applicable Israeli standards, including the railing standard SI 1142, and have the project engineer confirm the exact values to include.

Common mistakes to avoid

Leaving the scope vague or failing to attach dimensioned drawings often leads to bids that cannot be compared and costly change orders after award. Omitting finishing and installation requirements is another common error.

Our recommendation

Write the tender around a single drawing set and a one-page scope table so every bidder prices identical work. Require a shop drawing approval step before fabrication to catch dimensional issues early.

Summary

A clear steel staircase tender defines scope, provides complete drawings, specifies materials and finishing, sets safety requirements, and states installation and acceptance criteria. Structured bids then allow fair and accurate comparison.

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