3) Why are cracks of cementing wall abolish on summer time?
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Answer:
REASON FOR CRACKS IN BUILDINGS .
(1) Poor quality bricks & insufficient mixing of cement mortar.
(2) Insufficient curing in first ten days and construction of brick work in extreme summer .
(3) Rate of expansion & contraction of concrete / brick work is not same . So cracks will appear in the joints , where brick work is touching concrete pillar & below the beams . This is related with rising temperature.Refer the rectification works suggested below .
(4) Locking the house for long period will allow trapped air inside .This will increase the temperature inside house will increase in Day time and decrease in Night time . Cracks like this because of temperature variation is known as Thermal Cracks .This will become one more un noticed reason for cracks on wall .
(5) Collect the sample of same bricks, which is used in your new building and do the quality testing in a reputed lab .
RECTIFICATION.
(A)In the first one year hairline cracks will appear in brick wall .But these cracks will not expand to bigger one.
(B) Not to do final coat of painting with in one year after construction , if wire mesh is not fixed in the joints of brick work & concrete ( mentioned above) before first coat plastering.
(C) Whenever we are away from home for long period / short period, Keep minimum one window open in every room .As the Dining / living area & Stair Lobby is connected with all part of house , assure air circulation in these area . Dont' allow trapped air anywhere in house.
Explanation:
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