E-COURSE
ON
VULNERABILITY ATLAS
OF INDIA

  From the Desk of Executive Director

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  New Initiatives : Emerging Technologies
 
E-Course on Vulnerability Atlas of India Launch of NAVARITIH : Certificate Course on Innovative Construction Technologies by Hon'ble Prime Minister LIVE LABS - Enrol as TECHNOGRAHIS NEW... Preventive Measures to be taken for containment of COVID 19 NEW... Letter from NDMA to various Ministries to incorporate Vulnerability Atlas Clause in future tender documents New...Release of Compendium of Indigenous Innovative Building Materials and Construction Technologies
 

Brick Arch Openings in Cement Mortar (1:4)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
DESIGN EXAMPLE : Semi-circular brick arch opening
 
 
 
 
 
 
 
 
 
 
Critical Factors
 
1.  Curing
2.  Quality of Bricks
3.  Providing arch - shaped door/window frames
4.  Quality of sand  for mortar
5.  Availability of skilled masons
 
Tools Used
 
1.     Trowels                        5. Shovel
2.     Plumb bob                   6. Baskets
3.     Thread                         
4.      Pans                  
 
DO’S
DON’T’S
 
1.  Curing shall be done for seven days
2.  The mix should be of ratio 1:4
3.  Mortar joints should V - shaped with
     minimum thickness at bottom
4.  Mortar should be used within 30 minutes      
     of adding water to the mix
5.  Masonry should be always laid from both
     sides upwards
 
1. Find sand should not be used for masonry
2. Arch should not be disturbed while
    removing the mould
 
 
 

 
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