Extension on Top of an Existing Four-Storey Office Building

Extension on Top of an Existing Four-Storey Office Building

The brief was for an internally open plan Penthouse Flat arrangement for a single storey roof top extension on top an existing four-storey in-situ reinforced concrete office building.

// Project Overview

This project required Wyatt Carruthers Jebb to survey the existing structure to identify load bearing elements - the original information provided by the client was not correct.

Several structural options were considered including the use of the existing roof as a new floor plate.

A steel frame was ultimately chosen to be cost effective and for its benefits in build-ability and its high strength/weight ratio.

Combined hand-calcs and FE modelling were used to design the longitudinally braced steel frame and transversely moment resisting frame allowed for an internally open plan arrangement as requested by the client.

WCJ Accreditations


With 30+ years professional experience across London, Surrey and the home counties; Wyatt Carruthers Jebb specialise in Defect Diagnosis, Structural Engineering, Building Surveying, Civil Engineering, Contract Administration, Disaster Recovery, Party Wall Services, Forensic Investigations, Site Investigations sand other related services.
 

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// RELATED SERVICES

Structural Engineering

Structural Engineering

Registered with the Institution of Structural Engineers, our team of experienced Engineers offer a wide range of structural engineering services across the UK.

Contract Administration

Contract Administration

Our team of experienced Engineers and Surveyors offer a range of Contract Administration Services particularly in the field of building repairs and refurbishment throughout southern England and across the UK.

ABOUT THIS CASE STUDY

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Wyatt Carruthers Jebb Ltd can provide Engineering and Building Surveying services directly to the Homeowner or Landlord for a wide variety of projects and the correction of building defects.

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Mole Valley District Council

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Mole Valley District Council

Mole Valley District Council

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Mole Valley District Council
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A2 Dominion Housing Group

A2 Dominion Housing Group

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Bexley Borough Council

Boreham Wood Football Club

Boreham Wood Football Club

Clarion Housing Association

Clarion Housing Association

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Dartford Borough Council

English Heritage

English Heritage

Guinness Trust

Guinness Trust

Horley Town Football Club

Horley Town Football Club

London Borough of Croydon

London Borough of Croydon

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London Borough of Ealing

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London Borough of Southwark

Moat Homes

Moat Homes

Mole Valley District Council

Mole Valley District Council

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Notting Hill Genesis

Peabody Trust

Peabody Trust

Surrey County Council

Surrey County Council

Thames Water

Thames Water

United Living

United Living

University of the Arts London

University of the Arts London

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