Loft Conversions / Edition 1

Loft Conversions / Edition 1

5.0 1
by John Coutts
     
 

ISBN-10: 1405130431

ISBN-13: 9781405130431

Pub. Date: 09/13/2006

Publisher: Wiley

Domestic loft conversions have gained enormously in popularity as a way of providing more space without the substantial cost of moving house. One third of all new build houses have lofts that can be used for habitation.

This book provides a technical manual for construction practitioners, as well as the self-build market on the technical, design and regulatory

Overview

Domestic loft conversions have gained enormously in popularity as a way of providing more space without the substantial cost of moving house. One third of all new build houses have lofts that can be used for habitation.

This book provides a technical manual for construction practitioners, as well as the self-build market on the technical, design and regulatory aspects of loft conversions for dwellings.

Product Details

ISBN-13:
9781405130431
Publisher:
Wiley
Publication date:
09/13/2006
Edition description:
1ST
Pages:
280
Product dimensions:
7.45(w) x 9.72(h) x 0.58(d)

Table of Contents

Preface.

Acknowledgements.

Chapter 1 – Planning and legal considerations.

Permitted Development – The GPDO – Volume calculation – Certificates of Lawfulness – Curtilage and party walls – Conservation Areas – Article IV directions – Listed buildings – Planning permission – Planning applications – Planning guidance specific to loft conversions – Conditions affecting development – Unified Consent Regime – The Party Wall Act.

Chapter 2 – The Building Regulations and building control.

The Building Act 1984 and the Building Regulations – Approved Document guidance – Building control – Building control services – Full plans procedure – Building notice procedure – Notification and inspection of work – Certificate of Completion of Work – Disputes – The Determination procedure – The Relaxation/Dispensation procedure – Appeals – Buildings of historic or architectural interest – Electronic building control applications – Approved Inspector building control.

Chapter 3 – External forms.

Influences on form – Roof space only conversion – Box dormer conversion – Front box dormer – Full width dormer with masonry flanks – Mansard conversion – Hip-to-gable conversion – Side dormer conversion – Lean-to conversion – Half dormer – Existing attic rooms – Sleeping gallery –Traditional dormer forms – Gabled dormer – Hipped dormer – Flat former – Catslide dormer – Recessed dormer – Eyebrow dormer – Arched dormer – Segmental dormer – Pedimented dormer – Canted bay dormer – Design considerations – Fenestration – Roof details – Vertical cladding – External drainage.

Chapter 4 – Fire.

Fire resistance – Warning and escape – Floor height rules – Storey numbering – Single-storey dwellings – Two-storey dwellings – Three-storey dwellings – Sleeping galleries – Ongoing requirements – Elements and definitions – Proposed changes to guidance.

Chapter 5 – Conversion survey.

Survey procedure – Survey elements – Age of building – Headroom and floor to ceiling height – External relationships – Internal layout – Roof form – Roof structure – Roof condition – Walls – Foundations – Internal walls and partitions – Floor and ceiling structure – Strength of existing timber elements – Water tanks – Drainage and services – Chimneys.

Chapter 6 – Beams and primary structure.

Steel and timber structural design codes – Beam position relative to existing structure – Beam characteristics – Structural steel sections – Characteristics of engineered timber beams – Fire resistance of beams – Bearing plates – Padstones – Beam penetration – Beam splices – Bolted connections – Timber to masonry connections – Disproportionate collapse and loft conversions.

Chapter 7 – Floor structure.

The conversion floor – Elements of loft conversion floor design – Room ceiling height – Methods of support – Beam-supported floors – Underslung floor joists – Floor joists into beam webbing – Additional support for existing ceiling joists – Wall-supported floors – Floor joist selection – Binders – Floor joist-to-ceiling clearance – Strutting – Trimming – Lateral support by floors – Conversion floor fire and sound resistance – Floor materials and fixing – Flooring – Stairs – Stair configuration – Conventional stairs – Alternating tread stairs – Fixed ladders.

Chapter 8 – Wall structure.

External stud walls – Stud arrangement and spacing – Elements of stud wall construction – Sheathing – Breather membrane – Vertical cladding – Stud wall fire resistance – External masonry walls – Hip-to-gable conversion – Safety considerations – Lateral restraint of flank gable walls – Brick size and selection – Reclaimed bricks – New bricks – Solid blockwork – Mortar and brickwork – Parapet walls in loft conversions – Integrating new elements with old – Compartment (party) walls – Internal partitions – Window and door safety – Guarding – Glazing – Balustrades.

Chapter 9 – Roof structure.

The cut roof – The TDA truss – Trussed rafter roofs – Cut roof structural forms – Couple roof – Collar roof – Close couple roof – Lean-to roof – Butterfly roof – Double roofs – Cut roof structural elements – Common conversion alterations – Hip-to-gable conversion – Notches and holes – Lateral support for gables – Replacement roof coverings – Flat roofs – Warm deck – Cold deck – Preventing condensation – Ventilation – Attic trusses.

Chapter 10 – Energy conservation.

Status of the guidance – Windows and other openings – Fixed internal lighting – Heating and hot water systems – Insulation and thermal elements – Standards for new elements – Standards for replacement elements – Standards for retained elements – Standards for renovation of thermal elements – Additional obligations – Practical measures – Windows – Existing solid brick masonry walls – New solid brick masonry – New solid blockwork walls – Existing cavity masonry walls – New cavity masonry walls – New tile-hung stud walls – Existing or new pitched roof – New flat warm roof – Flat cold deck – Ventilation for occupants.

Appendix 1 – Specification.

Beams – New floor – Dormer walls – Hip-to-gable – Purlin walls – Internal partitions – Stair enclosure – Roof windows – Escape window – Windows and ventilation – Insulating existing roof slopes – Ventilating roof slopes – Warm deck flat roof – Cold deck flat roof – Stair access – Electrical – Drainage – Fire – Water tanks.

Appendix 2 – The Building Regulations: appeals and determinations.

Open-plan layout at ground-floor – Sprinkler systems and open-plan layouts – Potentially habitable rooms and enclosure – Doors of unknown fire resistance –.

Open-plan layout escape windows – Definition of a stair – Stair design: pitch and going – Stair design: selective application of regulations – Means of escape: floors more than 7.5 m above ground level – Means of escape: ladder brackets – Means of escape: structural constraints – Sleeping gallery.

Appendix 3 – Planning and curtilage.

Interpretation of curtilage – appeal decision letter.

Bibliography and references.

Glossary Index

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