Three Story Warehouse Steel Structure Design

Beta Scope

•  Steel Structural Design for the new warehouse in Southall, London, UK.
•  Structural Design of the hot-rolled and cold- rolled steel structure for the warehouse.
•  Foundations Design of the warehouse pad footings.
•  Design of concrete industrial ground floor slab according to TR34.
•  Design the external steel fire escape staircases.
•  Design the cladding support system.

Background

Beta Design Consultants were commissioned by Chapmans Steel Fabrication Solutions to prepare the structural design for the three story warehouse after Beta Design Consultant secured the approval for the planning stage. The proposed warehouse was a pitched roof hot-rolled steel portal frame with a 10m span opening and 50m length to suit the land geometry.

Beta Solution

Beta Structural Engineers established the conceptual and preliminary design, which produced the approximate member sizes, the steel quantities and the foundations sizes. This initial design allowed the Client to establish construction cost and make budget decisions.

This was followed by a detailed structural analysis, with the use of Scia Engineer, to define the exact sizes and to standardize the sections for efficient fabrication and installation. The products will be stored on racks which will be supported on 200mm thick reinforced concrete slab. The steel frame was modelled, analysed and designed with the use of different softwares to ensure compliance with the governing structural codes Eurocodes (EN 1994-1-1).

Practical Details

Scia Engineer was used for the modelling, analysis and design of the structure according to the EN 1993 British BS-EN NA. Our design made use of guidance in the Eurocode to consider the nominal stiffness of base plates and allow for 20% of the column stiffness when checking deflections. This allowed us to produce a very efficient structural design.

The Foundation Design was carried out with the use of Tekla Tedds according to pad footing analysis and design of BS8110-1:1997. The concrete industrial ground floor slab design was also carried out from Tekla Tedds in accordance with TR34, 4^th Edition 2013.

Having completed the design, Beta Structural Engineers produced General Arrangement Drawings – Plans and Elevations; as well as detailed fabrication drawings for the foundations and connections design.