Bharat Sanchar Nigam Limited Tender

Providing and fixing tiled false ceiling of specified materials of size 600 x 600 mm (Nominal) / 595 x 595 mm (Actual) in true horizontal level. Suspended on Superafine XL 38H SP 3038. The tile shall be laid on 15mm wide T-section flange white (matching to tile colour) having double stroke rotary stitching on all T section i.e. the Main runner, 1200mm & 600mm Cross Tees with a web height of 38mm (all sections). The deflection loading of the system shall be 12.5 kg/sqm. The end details of the cross tee shall be made of pre hardened steel clip fixed to the ends of the cross tee to provide double locking between “cross tee to cross tee” and “cross tee to main beam”. All main beam to main beam and cross tee to cross tee connection shall have a pull out strength of more than 100kg. The T Sections shall be made of hot dipped galvanized steel 90 gsm and pre-painted steel with baked polyester paint of 0T bending capability.

INSTALLATION: To comprise main runner spaced at 1200mm securely fixed to the structural soffit using suspension system (specifications below) at 1200mm maximum. The First / Last suspension system at the end of each main runner shall not be greater than 450mm from the adjacent wall along with the first and the last main beam shall be at less than 600mm from the wall. Flush fitting 1200mm long cross tees to be interlocked between main runners at 600mm to form 1200 x 600 mm module. Cut cross tees longer than 600mm require independent support. 600 x 600mm module to be formed by fitting 600mm long flush fitting cross tees centrally between the 1200 mm cross tees. Perimeter trim to be wall angles of size 3000x19x19mm, secured to walls using screws at 450mm centre to centre maximum. All border cut tiles shall be laid, using lay-in end cap for installation to have a Microlook effect on perimeters. Installation shall be carried out as per Manufacturer recommended procedure.

SUSPENSION SYSTEM: accessories manufactured and supplied by Manufacturer consisting of M6 Anchor Fasteners with hanger hole, pre Straightened Hanger wire of dia – 2.5 mm of 1.80 m length having a tensile strength of 344-413 MPa and a minimum loading strength of 110 kgs. Additionally, adjustable hook clips made of 0.7mm thick Grade 1 C55 galvanized spring steel of dimension 100 x 20mm and 4 mm aquiline wire to be used for level adjustment during installation purpose in main runners.