PERENCANAAN PEMECAH GELOMBANG (BREAKWATER) SISI MIRING DI PELABUHAN MERAK DENGAN MENGGUNAKAN BATU PECAH DAN TETRAPOD

Abstract

Wharf VI at Merak Port is located in Tamansari, Pulo Merak Cilegon, has a wharf length reaching 145 meters, 45 meters wide and a depth of 7.5 meters with wharf type will serve as executive dock. The purpose of this research is to plan the layout and design the breakwater at coordinates 5 ° 93`80`` LS 105 ° 99`16`` BT up to 5 ° 94`11`` LS 105 ° 99`49`` BT as an alternative to protect the Port of Merak, especially Wharf VI, plotting the wave breaker type, determining the wave boundary protection layer and calculating the dimensions of the breakwater. The calculation of layer protection using the Hudson Method to determine the thickness of the plan's protective layer and using rubble mound material and tetrapod. The calculation of the dimensions of the breakwater is obtained by the slope of 1:1.5; 1:2; and 1:3. Furthermore, the calculated data is drawn transversely with each slope of 1:1.5; 1:2; and 1:3 using rubble mound material and tetrapod. The result of the count of the protective layer grains on the slope of 1:1.5 per 1 meter is 316,172 m3 for rubble mound and 296,676 m3 for tetrapod, the slope of 1:2 per 1 meter is 420,029 m3 for rubble mound and 403,863 m3 for tetrapod, 1:3 per 1 meter is 592,552 m3 for rubble mound and 577,925 m3 for tetrapod. The result of the research can be concluded that the most likely slope alternative to be realized is at the slope of 1:2.