An Integrated Index for Airport Noise - CIRIAF

75 and 65 dBA and 65 and 60 dBA). If no receiver is present the coefficient is equal to 1.Same method for α 3 , β 3 and γ 3 has been employed.Table 2: L eqα ,L 10α e L 90α . values.LeqL VALeqαL10LVAL10αL90LVAL90αBetween 0,8 and 1 0,90 Greater than 2,2 0,90 Between 0,8 and 1 0,70Between 0,7 and 0,8 0,94 Between 2,2 and 2,0 0,93 Between 0,7 and 0,8 0,75Between 0,6 and 0,7 0,96 Between 2,0 and 1,8 0,96 Between 0,6 and 0,7 0,80Between 0,5 and 0,6 0,98 Between 1,8 and 1,6 0,99 Between 0,5 and 0,6 0,90Between 0,4 and 0,5 1,00 Between 1,6 and 1,4 1,01 Between 0,4 and 0,5 1,00Between 0,3 and 0,4 1,05 Between 1,4 and 1,2 1,03 Between 0,3 and 0,4 1,10Smaller than 0,3 1,10 Between 1,2 and 1,0 1,05 Smaller than 0,3 1,20Table 3: This is a table caption.ReceiverVariablesα 2 β 2 γ 2 α 3 β 3 γ 3Hospital + 0,25 + 0,35 + 0,40 - - -School + 0,15 + 0,25 + 0,35 - - -Park + 0,10 + 0,15 + 0,25 - - -SIC - - - + 0,1 + 0,2 + 0,32.2 I data CalculationI data provides information on airport traffic volume, fleet composition and all that aspects notdirectly connected to acoustic measurements. The I data value is given by:I P ⋅ K + P ⋅ K + P ⋅ K + P ⋅ K + P ⋅ Kdata++ P ⋅ K1 1 2 2 3 3 4 4 5 5 6 6= (5)P1+ P2+ P3+ P4+ P5P6K factors take in account 7 different aspects concerning airport statistical and geometricaldata: K 1 regards airport annual traffic, passengers number and annual goods tonne; K 2 regardsfleet composition, classified by noise emissions; K 3 concerns the traffic data trend, i.e.comparison between present and previous year traffic; K 4 concerns the comparison betweenmean annual traffic and moves in the maximum traffic day; K 5 regards passengers and goodsquantities carried by each aircraft; K 6 regards airport area size, K 7 concerns transportinfrastructure number and typology, neighbouring airport area. K values have been weightedby the seven constants P i .Traffic data: K 1 Factor