CODE of PRACTICE for design and installation of JOINTS in building) recommend for the spacing of expansion joint:WallsLoad-bearing walls with cross walls at intervals. Traditional type of one-brick thick or more = 30 m intervalChajjas, balconies, and parapets = 6 to 12 m intervalsRoofsOrdinary roof slabs of RCC protected by LAYERS of mud phuska or other insulating media in unframed construction = 20 to 30 m intervalsThin unprotected slabs = 15 m intervalFrames = 30 m interval