Evaluasi Kinerja Seismik Struktur Berbasis ASCE 41-17 terhadap Bangunan Gedung 8 Tingkat Berbentang Tunggal akibat Penurunan Kualitas Beton Kolom = Structural Seismic Performance Evaluation using ASCE 41-1 on an 8 Story Single Span Building due to Deficiency of Concrete Strength in Columns