Evaluasi Kinerja Struktur Pelat Lantai dengan Metode Marcus, Metode Stiglat/Wippel dan Software Midas Gen (Studi Kasus : Proyek Pembangunan Gedung Digital Learning Center Building Universitas Sumatera Utara)

Abstract

Structural buildings consist of several structural elements that work together to withstand the workload of the building, one of which is the floor slab. Based on the load distribution, the plates are divided into two, namely one-way plates and two-way plates. Two-way slab is a slab with a ratio of less than two long spans to short spans. The two-way plate is a statically indeterminate structure of high degree so that the exact solution will involve high degree differential equations which are difficult to implement. Seeing that the exact solution is difficult, civil engineering engineers have developed many methods to facilitate two-way plate analysis, including the direct design method; equivalent moment frame method (equivalent frame method); finite element method; and approximation methods such as the Marcus Method, the Stiglat/Wippel Method, and the Gideon Method. This study aims to evaluate the performance of the floor slab structure in the meeting room of the Digital Learning Center Building, University of North Sumatra based on SNI 2847:2019 using the Marcus method, the Stiglat/Wippel method, and the Midas Gen software. Based on the calculations performed, information is obtained that the thickness of the installed floor slab, h = 120 mm, meets the minimum thickness requirement for afm > 2, which is 90 mm; the concrete cover used is in accordance with SNI 2847:2019, which is 20 mm; distance between installed reinforcement, D10-150, according to the amount of reinforcement required; the actual deflection of the floor slab meets the permit deflection requirements; and the quality of the materials used, both reinforcing steel, fy = 280 Mpa, and concrete, fc ′ = 25 Mpa, have met the requirements of SNI 2847:2019.