Question

Q. 3 (a) Define Pointing and its different types. (b) Why joints are provided in buildings ? Differentiate Expansion and Construction joints in detail.

Answer 1

are 0 Pointing is defined as the finishing of mortar joints in construction of stone or brick masonry. In this process, joints implemented to a depth of 10mm to 20mm & filled it with better quality moutar. Types of pointing ③ Beaded pointing ① Grooved pointing ② Vee pointing ② Recessed pointing ② Tuck Pointing @ Weathered frointing ③ Struck Painting ③ Flush pointing Joints are provided in building to allow independent movement of building elements & protect the structure & finishes from damage. Difference b/w expansion joints & contra construction joint: - ① Construction Jointe - Construction joints Construction joints are provided to connect old & fresh concrete. * The existence concrete should be free from dust & have rough surface * Proper vibration is required to develop good bond b/w old wire brush after pouring of & new concrete & The joint surface must be clean out by new concrete CONSTRUCTION JOINT er OLD CONCRETE NEW CONCRETE

@ Expansion jointe - The expansion joints are provided to assist the movement of structural elements due to expension shrinkage & to avoid the disfiguration of structure mostly provided in huge structions like bridges to spread stress uniforonly material like bitumen, fibres, ete There are The gaps gaps are filled by experien Expansion joint scalent 2008888888 OOOO0000