PROJECT NAME: Trendyol Campus – Spiral Ramp
STRUCTURE TYPE: 1.b. Commercial Buildings – Office Building
START DATE: 14.10.2019
STATUS: Completed and opened for use on 17.02.2020
CONSTRUCTION AREA: 130 m²
LOCATION: Spine Tower / Maslak / İstanbul
EMPLOYER - INVESTOR: Trendyol
PROJECT MANAGEMENT: SPM Proje Yönetim ve Danışmanlık
MAIN CONTRACTOR: Sistema Teknolojik Yapı
STEEL CONTRACTOR: Skycon Çelik - İstanbul
STEEL QUANTITY: 70 tonnes
ARCHITECTURE: Erginoğlu & Çalışlar Mimarlık
CONSULTANT: ERDEMLİ Proje ve Müşavirlik
ENGINEERING: Modern Mühendislik
MECHANICAL: Gresis Enerji ve Mühendislik
ELECTRICAL: Akser Elektrik
LIGHTING DESIGN: ON-OFF Aydınlatma Tasarımı
It is noticed that no direct cantilever elements are connected to the reinforced columns but circular or box steel columns in harmony with the architecture have been placed in front of the reinforced concrete columns, where the cantilever beams are connected to these steel columns. These cantilever beams are connected to each other with secondary beams in the form of a walkway and the walkway is in the form of an eliptical spiral in plan. Therefore, the load-bearing beams are exposed to torsional loads. The beams are designed with a rectangular closed box form in order to carry the torsional loads which also prevents exceeding the displacement and vibration limits.
BIM BASED SOFTWARE HAVE BEEN UTILISED
Whilst the structure was designed in line with the Turkish regulations, American regulations were utilised for the vibration calculations. It is observed that the walkway has been built in the existing reinforced concrete structure with complicated and oval forms within itself. Furthermore, Tekla X-Steel and Revit, which are BIM based software, have been used for modelling purposes as the design and construction durations were very limited. Manufacturing details were designed with Tekla X-Steel and SAP2000 software was used for all calculations.
STEEL MANUFACTURING
In this project, TS ENV 1090-1 was utilised for generaldefinitions of steel structures. EN 1090-2 was utilised fortechnical requirements for execution and EN 10079 was utilised for structural steel elements and steel structures. EXC3 was selected for execution class whilst the welding plan and welding procedure specification (WPS) were prepared inaccordance with this execution class.
Manufacturing procedure, assembly procedure and qualityplan were prepared for occurrences which required welding plan. Required preparations were made before starting to work as per prEN 1090-2 and Quality Plan was executed in line with the sample format provided in prEN 1090-2 Appendix-C.
Welding works were executed in line with the relevant chapters of TS 3357, TS EN 3834 and TS EN ISO 14554.
All information regarding the welds have been provided in the relevant drawings and manufacturing drawings whilst the welding personnel for the steel works have been selected from welders possessing required certificates as per TS EN 287-1 and TS EN 1418 or AWS D1.1.