Slab layout of 18x20m twin house plan is given in this Autocad drawing file. This is single story building. There are two houses available. 50x100mm timber rafter, 50x50mm purlins, 150mm thickness of concrete slab, and parapet wall is mentioned in this drawing. In this plan living area, master bedroom with attached bathroom, kitchen, dining area, store room, kid’s room with attached toilet, terrace and guest room with attached toilet are available. For more details download the autocad drawing file. Thank you for downloading the Autocad file and other CAD program files from our website.