Revision in the wall design by increasing the acoustic value from 45 dB to 55 dB,                           Replace wall P07 to P02

Date:               xxx

Ref:                  xxx

Kind Attn         :Mr. xxx

Project:            2B + G + 14+ Lower Roof Hotel Building on Plot No. xxx at Al Barsha 1st, Dubai

Dear Sir,

With reference to the above, the toilet wall between Unit No.1 & 2 as well as Unit No. 3 & 4 in our approved drawing for 2^nd floor, It was the drafting error, where we mention wall P07 with 98mm width, It must be wall P02 with required dB and 123mm width.

So, we are intimating that the particular wall as per attached drawing should be 123mm instead of 98mm to achieve specified acoustic value.

So, kindly review our corrected drawing and analyse the impact at both side of the rooms because the wall between the room can’t be 45dB as in the drawing submit with error. It must be 50dB as per tender drawing and 55dB as per Gypsemna concept drawing requirement.

Regards,

For xxx Contracting L.L.C.

xxx

Project Manager