repairs to furniture in vvip / vip / green rooms including repairs to auditorium chairs and replacing broken chairs with new auditorium chairsatdr. vasantrao deshpande hall. nagpur. for winter assembly session 2023 at nagpur- 1 providingand fixing bifma certified auditorium chair ( box office – symphony model), box-office symphony is a push back chair with writing tablet and fluimatic slider system. structure:- frame :back rest frame of erw tube / is :3074-2005 grade 1-16 dia round pipe 1.2mm thickness & extra reinforcement 16 dia round pipe 1.2 mm.cushion frame (seat) erw tube/ is :3074-2005 grade 1- 22 dia round pipe 1.63mm thickness. wing components:-a) side wing frame with plywood. with upholstery. b) leg: sq tube is:4923-1997- 25x25 mm, 1.63 thickness springs:- seat : for auto tip-up - torsion spring/ spring steel is : 4454 11981 grade 3 (part i) tested for 5,00,000 cycles. for push back mechanism - coil spring / spring steel is : 4454 1981 grade 2 tested for 1,00,000 cycles. foam:-automotive grade high resilence-hr polyurathene foam, density: 50 + 5 kg/m3 / is k 6401, constant compression set: (max. 13%) jis k 6401. back and cushionhousing:- ppcp is: 10915 1994./ injection molded/thermoform plastic. finish:- seat cushions dimensions are in-line with anthropometric datas & ergonomically profiled contours. backheight:- height of top of the back from ground level 1030 1+/-15mm. effective seat depth:- seat cushions dimensions are in-line withanthropometric datas & ergonomically profiled contours. seat depth is 475mm land 448mm width & height from ground level 435mm tipe of back rest slider160mm travels. with metal ball and roller cage which results in push back of 140 + 10mm should have flexibility to restrict movement of the pushback and slider asper availability of aisle space. armrest:- solid wood armrest. armrest center center distance:- 560mm grouting:- 4 nos of 75mm (for hard floor) fabric:- heavy duty 100 % poyester dyed yarn with 3mm + .5mm foam backing /result tent. aisle side lamp:- provision for lights on sides for seats along the , i-• !aisles.polypropelene housing with 12mm watt lamp row numbering:- row i inumbering for seats along the aisles.2mm alluminium cutouts with row numbering seat numbering:- seat numbering on back and tip-up portion 2mm aluminium oval strips with seat numbering 1,2,3.....