Rain penetration and its control

It is only recently that scientific studies have been undertaken to explain the mechanisms of rain penetration. Through better understanding of these mechanisms it should be possible to design and construct walls from which the problem is virtually eliminated.Aussi disponible en fran\ue7ais : P\ue9n\ue9tration de la pluie et moyens de l'emp\ueacherPeer reviewed: NoNRC publication: Ye