Audoterium design " Technical insulation" acoustics

TECHNICAL INSULATION "Acoustics"

Faculty of fine arts ARCHITECTURE

HELWAN UNIVERSITY

GRADE : A+

YEAR : 2025/2026

Occupance study :

Area = area of chairs * No of chairs = 430*0.65 = 279.5

Average hight = 8+7.29+5.4 /3 = 6.92

Volume = 279.5*6.92 = 1,934.14

Recommended volume / seat optional Rooms of speach = 7.8*430= 4,354

Since : 4,354 > 1,934 Accepted

Materials & absorption coefficient :

Floor: Material (Heavy carpet on felt backing) , (A=0.4) , Area=734.46 A=a*s= 734.46*0.4=293.784

Stage: Material (Heavy carpet on felt backing) , (A=0.4) , Area=80.21 A=a*s= 80.21*0.4=32.084

Seats: Material (Fabric upholstered) , No of seats (400) , (A=0.8) , Area=88 A=a*s= 400*0.22*0.8=70.4

Ceiling: Material (Mineral fiber board) , (A=0.47) , Area=240.20 A=a*s= 240.20*0.47=112.894

Walls reflector: Material (Plaster board paneling on studs) , (A=0.06) , Area=94.81 A=a*s= 94.81*0.06=62.574

Wall absorbate: Material (pagebord over fiberglass board) , (A=0.99) , Area=512.5 A=a*s= 512.5*0.99=507.375 A Total =293.7+32+70.4+112.8+62.574+507.375=1078.84 RT=0.16V/A= 0.16*1934.14/1078.84=0.286

FIRST FLOOR PLAN

STUDIES & STEPS :

1-The height of the stage from the hall : 1.20m   The height of the stage from the orchestra bit : 3.10m

2- The vision study was focus at the first point of the stage

3- The stage is 4.8m away from the first row

4- The top of the head (FOR HEAD) is 0.13m from the level of the person is eyes

5- The height from the top of the head to floor is 1.25m

6- The width of all rows is 1m

7- After trials with the 6 variants , the most appropriate stairs height were: * 1st zone, connect each row to the other with two steps , each 0.125m height * 2nd zone, connect each row to the other with two steps, each 0.15m height

GROUND FLOOR PLAN

FIRST FLOOR PLAN

Acoustical Analysis Plan

ZONNING PLAN

SECTION A-A BEFORE

SECTION A-A AFTER

LAY OUT SIMULATION

SECTION SIMULATION

3D SIMULATION

SHOTS