4. Coastal Erosion and Protection Measures Including Case Studies
107
Permeable straightsloping seavall
Permeablesloped seavall viti berni
P ermea ble slo pi ng sea vêI I vit h a n
imperméable crown va II
Vertical imperméable
seavÆll
Fig. 4.6 Types of seawall sections [CEM, 2002].
shapes of groins hâve also been employed for trapping the sédiments in the
nearshore (Fig. 4.7(a)). The major parameters that décidé the effectiveness
of a groin in a given location are net and gross sédiment transport rates,
water depths at the seaward tip of the groin, surf zone width, structural
107
Permeable straightsloping seavall
Permeablesloped seavall viti berni
P ermea ble slo pi ng sea vêI I vit h a n
imperméable crown va II
Vertical imperméable
seavÆll
Fig. 4.6 Types of seawall sections [CEM, 2002].
shapes of groins hâve also been employed for trapping the sédiments in the
nearshore (Fig. 4.7(a)). The major parameters that décidé the effectiveness
of a groin in a given location are net and gross sédiment transport rates,
water depths at the seaward tip of the groin, surf zone width, structural