Supply and installation of fixed-back plastic (polypropylene) seats for fans. The folding system includes a shock absorber. The sides, frame, and arms must be made of iron. The seat width must be no less than 55 cm, its height no less than 85 cm, and its depth no less than 54 cm when unfolded. The seat must be mounted on a horizontal tubular iron frame (painted with a sun- and moisture-resistant paint) no less than 1.5 meters long and secured to the existing stand. The work includes numbering the seats with engraved aluminum and steel plates, evenly and clearly affixed to the seats, and everything else necessary to complete the work in a technically correct manner.
- A proposal for the distribution of seats by color must be submitted, along with a sample for each color.
- A certificate of UV resistance for the seat must be submitted for a period of no less than ten years.
- A certificate of flame resistance for a period of no less than one hour must be submitted.
- A timeline for manufacturing, supply, dismantling, and installation must be submitted.
- Catalogs from the manufacturer (from which the chairs will be supplied) must be submitted. The company must have installed several similar projects and hold accreditation certificates from the organization responsible for auditorium chairs.
- A certificate detailing the specifications of the chair to be installed must be submitted, ensuring it meets the required specifications.
- All chairs must be inspected after installation to ensure proper installation and safe use.
- Endurance tests must be conducted to ensure the chair can withstand the permitted weights.