Additional work (Acoustic and Internal Road) in Auditorium Hall of Dr. Nityanand Sodh Evam Adhyan Kendra at Doon University Dehradun (Uttarakhand)

Amount

Tack coat Providing and applying tack coat with bitumen emulsion using emulsion pressure distributor at the rate of 0.20 kg per sqm on the prepared bituminous/granular surface cleaned with mechanical broom.

Filling Pot- holes and Patch Repairs with open - graded Premix surfacing, 20mm. (Removal of all failed material, trimming of completed excavation to provide firm vertical faces, cleaning of surface, painting of tack coat on the sides and base of excavation as per clause 503, back filling the pot holes with hot bituminous material as per clause 511, compacting, trimming and finishing the surface to form a smooth continuous surface, all as per clause 3004.2

20 mm thick Open Graded Premix Carpet using Bitumen Emulsion as per Technical Specification Clause 508.2

Seal Coat Providing and laying seal coat sealing the voids in a bituminous surface laid to the specified levels, grade and cross fall using Type A, Type B and Type C as per Technical Specification Clause 510 By Manual Means Bitumen (VG-10)

acoustic work

wall Panelling

Stretched febric finished wall panelling

P/f of Stretched fabric panels over a frame work of G.I. studs and floor channel at 600 mm center filled 50mm thick fibre glass resin bonded insulation of density 48kg/cum. The insulation to be held in position with chicken wire mesh of 18mm 24SWG on both sides.The frame work to be supported from the wall with G.I. hold fasts. Supply & fixing of Acoustical Fabric strech paneling with 12mm x 28mm thk Acoustical Fabric panelling UPVC gripper fix 12mm ply strip and 20mm acoustic tile 600 the frame will be fixed to the wall &the space between fabric & will be fix or hardware with labour including.Fabric used should be treated for fire retardant and to be stretched with 19mm wide UPVC grippers fixed over 50x12mm thick ply strips as per design & pattern.Technical Parameters • Fire (Class) – 1& P, 1 • Acoustics – NRC Upto 0.85 • Thermal (W/mk)– 0.07 • Climate (°C, RH) – 50, 95 • Light (%) – Color dependant • Green (VoC, RC %) – Low, 30

Wall Treatment Lower Levels (Grooved Wooden Finish) :- Providing and fixing Absound Slated Wooden Acoustic panel with lineal perforations to be fixed on walls.The panels shall be with melamine laminate finish of size 2430mm x 128mm x15mm wirh 4mm slats at 28 mm pitch, Toungue and Groove edges for seamless mounting having density of 1000kg/m3 . The back of the panels are perforated with 10mm diameter circular holes with a nonwoven fabric covering of 0.2mm for providing Sound absorption via the acoustic impedance method.Panel is to be fixed on GI framework as recommended by the manufacturer with screw fixed horizontal / vertical to wall at every 600mm c/c with centre & edge bracket in tongue & groove system on GI framework. Technical Parameters • Core - Magnesia • Acoustics – STC upto 34 • Fire – 1&P • Climate (OC RH) – 50,90 • Termite resistance – Yes • Light reflectance – 85 % • Green (RC %) – 30 • Hygiene (VoC, Clean room) – Low, Class 1 • Strength, Load capacity (Kg) - Antisag, Ball-Impact

Providing & Applying Plastic emulsion paint on ceiling/ false ceiling/walls three or more coats with roller I/c applying cement primer, making smooth surface with putty to the satisfaction of architect.

Teak wood Skirting

Providing and fixing 100 mm high 12mm thick Teakwood skirting fixed to existing walls/column with brass screws i/c melamine polishing complete in all respects as per drawings specification and as directed.

sound reducing doors

Entry/exit doors for the auditorium Fire cum acoustic doors consisting of fire resistant materials & peripherial seals all around . The door to be laminated with 1mm laminate. The Door shutter frames to be of klin dried chemically treated Mirandi wood. The door shutter frame to be lapped with 12mm com ply duly treated for fire retardance. Make NAVAIR or equivalent. Cost includes Sal wood Chowkhat (section size : 5" x 3") fixing stainless steel ball bearing hinges,door closers, door stoppers and s/steel handles.(Fire rating of 30 minutes)

Providing & fixing SS handles 300mm long .

Providing & fixing door closers .

PROSCENIUM

Stretch NRC fabric 1.7mx75m

Supply and installation of Stretch NRC system consisting of FR Grade NRC fabric with high-performance Polypropylene core and acoustically-transparent face covering of choice colour, size 1.7mx75m, stretched by using combination of strut framework, SE15 Tracks, Anutone Strand Primer 15mm thk with requisite accessories.

The Strut framework system shall include GI Strut thickness, length 3600mm, knurled web 40mm, depth 10mm and equal flanges 15mm is fastened to the wall positioned vertically at every 600mm centres. Anutone Strand primer, square edge, magnesite bonded pinewood fiber panels of size 600x1200x15mm having density 400kg/m3, weight 6kg which is fixed perpendicular to GI strut behind using suitable fasteners. SE15 tracks to be installed on acoustic panels, by first applying adhesive on both surfaces for a true and continuous secure grip. SynthPF 10x50mm is to be infilled in GI framework for better results. This completes the substrate to receive the Stretch NRC acoustical fabric.

The Stretch NRC acoustical fabric of width 1.7m is stretched and tucked into the Tracks and secured to the locking jaws with purpose-specific tucking tools to obtain smooth, taut, wrinkle-free finish. Ensure the weft and weave of the fabric along with the surface are all oriented in one direction to achieve uniform shade. Note: Minimum 100mm additional fabric is required for tucking hence maximum module wall fabric width would be 1600mm. Technical Parameters • Fire (Class) – 1& P, 1 • Acoustics – NRC Upto 0.85 • Thermal (W/mk)– 0.07 • Climate (°C, RH) – 50, 95 • Light (%) – Color dependant • Green (VoC, RC %) – Low, 30

MUKESH KUMAR