4 Balmoral Road Renovation & Extension
Project Details
This project involves the comprehensive structural design and engineering for a residential renovation and extension located at 4 Balmoral Road in London.The engineering scope required modern solutions for a complex structural assembly, including timber roof joists (RJ1, RJ2), floor joists (FJ1), rafters (R1), and outrigger joists, as well as a series of high-strength steel beams (SB1-SB5) and columns (C1, C2A, C2B).The primary structure utilizes a combination of S355 grade high-strength steel sections and C16 grade timber framing to ensure structural integrity for the new renovation. The design process included a rigorous wind loading analysis conducted in accordance with EN 1991-1-4:2005+A1:2010 and the UK National Annex, accounting for a map wind speed velocity of 22.0 m/s. The structural elements, including ridge beams and load-bearing stud walls, were engineered to meet strict Eurocode standards, specifically EN 1995-1-1 for timber design and EN 1993-1-1 for steel analysis. The foundation system features 400mm wide x 800mm deep trench footings (WF1) constructed using C30 strength concrete, designed to perform reliably on material capable of sustaining a minimum soil bearing capacity of 100 kN/m².
Role
Structural Engineer/Designer
Services Provided
The scope of services includes the preparation of comprehensive structural calculations and structural drawings for the proposed structure. Structural calculations shall include complete loading analyses in accordance with the applicable provisions of the governing building code and design standards, including evaluation of wind, snow, dead, and live loads as applicable to the project site. The engineering work shall encompass the structural analysis and design of all primary and secondary structural components necessary to safely support the structure and ensure a continuous and code-compliant load path. This includes the analysis and design of foundations, footings, slabs, beams, girders, floor framing members, roof framing members, and other structural elements required to resist gravity and lateral loads.
Structural drawings shall include a Foundation Plan identifying the layout of footings, foundation elements, and reinforcing requirements; a Ground Floor Plan showing beams above for coordination with architectural and structural framing; Floor Framing Plans for all levels including the Loft Floor Framing Plan where applicable; and a Roof Framing Plan indicating the arrangement of rafters, beams, and framing members. The drawing set will also include structural sections illustrating the relationship of structural components through the building, as well as structural details, general structural notes, and technical specifications necessary to support permitting, coordination, and construction implementation. All documents shall be prepared to clearly communicate the structural design intent while ensuring compliance with applicable codes and project requirements.