From the Desk of Executive Director

Global Housing Technology Challenge - India

  Global Housing Technology Challenge - India

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  New Initiatives : Emerging Technologies
 
Comments Invited on E-course on ‘Vulnerability Atlas of India’ NEW...Extension of Bids Submission Dates from 20.8.2019 to 28.8.2019, Corrigendum dated 6th August, 2019 and RFP for EPC mode for development and construction of EWS houses under LHPs at six States under GHTC-India Indian Structural Steel Conference, March 25-27, 2020 by IIT Hyderabad
 

BRICK FOUNDATION IN MUD MORTAR
System Components
Initial Cost Structure
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Local
Economy component = 27%
Foundation in mud mortar of 450 x 450mm over 600 x 600 mm footing in class II bricks
DESIGN EXAMPLE : Foundation for a single storey Building
 
 
 
Maximum width required = 2 x width of the wall + 0. 3m
 
(Assuming 23cm thick brick wall)= 2 x 0.23 + 0.3 m. = 0.76m.
 
Minimum depth required = 
 
Assuming P
 
Safe permissible pressure on base) = 125 KN/sqm
 
W (weight of soil)    = 18 KN/sqm
 
Angle of repose of the soil = 30 = 125/18x0.111 = 0.77m.
 
Assuming bearing capacity of soil = 200 Km/sqm
 
Width required  = 125/200 = 0.625m
 
Thus provide a foundation width = 76cm and depth 77cm
 
Critical Factors
 
·      Quality of Soil
·      Width and Stepping of Foundation
·      Breaking of vertical joints
·      Protection from water
·      Availability and Cost of Bricks

 
Tools Used
 
·      Trowels
·      Plumb bob 
·      Thread
·      Pans
·      Shovel
·      Pick axes
·      Baskets
 
DO’S
 
DON’T’S
 
·         Soil should have medium Plasticity
·         Vertical Masonry joints should be properly broken
·        Masonry should be stepped after one day’s Construction
·      Excessively sandy and clayey soil should not be used for masonry mortar
·      Height of Masonry construction should not be more than 1m per day
·      Masonry should not be allowed to dry out quickly
 
 
 
 

 
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