Civil Engineering

Sebuah bangunan tidak dapat berdiri begitu saja didirikan langsung di atas permukaan tanah, untuk itu diperlukan adanya struktur bangunan bawah yang disebut PONDASI. Pondasi adalah bagian dari bangunan yang berfungsi mendukung seluruh berat dari bangunan dan meneruskannya ke tanah di bawahnya.

A dual-function breakwater model with a function as a coastal protector and as a wave energy converter with an overtopping concept was investigated experimentally in the laboratory. Laboratory investigations were conducted to find out how the wave run-up that occurs in the dual-function breakwater model to support as a wave energy converter with an overtopping concept. Research on wave run-up in dual-function breakwaters is still very rarely carried out, considering that in this study, it is hoped that a large run-up wave can occur so that overtopping can occur, whereas generally, the run-up studies that have been carried out on conventional breakwaters expect the opposite. In this study, a dual-function breakwater model was created which has a combination of slopes and is made smooth and impermeable. The research was conducted on a two-dimensional wave flume, with regular waves and carried out several variations of hydraulic parameters and structural model parameters. The results of this study indicate that the wave run-up that occurs is influenced by the incident wave height and the Irribaren Number. It was found that the greater the height of the incident waves, the greater the wave run-up. It was also found that the large Irribaren Number resulted in a large relative wave run-up as well, wherein this study the relative wave run-up obtained reached a value of about 4.8.