Motley-keenan model adjusted to the thickness of the wall

This work proposes an adjustment in the Motley-Keenan model, considering the thickness of the wall. To validate the proposal, measures were made in environments indoor, as it will be presented. The results demonstrate the reliability of the adjustment, being obtained smaller errors in the predicted values in comparison with the measured values, indicating a better accuracy in the prediction of the propagation with the use of this model.