Understanding Architectural Details - Residential, Commercial, Basements, Passivhaus, House Extensions and Loft Conversions. The 6 Book Package includes: Understanding Architectural Details - Residential in PDF format Understanding Architectural Details - Basements in PDF format Understanding Architectural Details - Commercial in PDF format Understanding Passivhaus - PDF format Understanding Loft Conversions House Extension Details 2D details in CAD format as dwg files (version 2010) 3D details in SKP format for SketchUp (version 2024) Plus UAD Commercial Wall Details bonus book and digital files (worth £20+) Details:Calculated book that accompanies Understanding Passivhaus in PDF format Flixo files associated with Details:Calculated UK construction standards and methods Details drawn in metric units System Requirements: Please note this package includes pdf, .skp and .dwg files which are large in size. Make sure you have a good internet connection, and download the files to a laptop or pc for best results.