LET US CONCENTRATE

OURSELF IN THE

FOUNDATION WALL

AT THIS POINT

SHRINKAGE CRACKS :

WILL NOT CONTINUE

INTO THE FOOTING

NOR

INTO THE UPPER WALL

AND

USUALLY NEAR THE CENTER

OR 1/3 POINTS

DRAWING and PICTURE: Shrinkage cracks in foundtion wall

CONCRETE

loses water during curing process

FROM

fluid to solid

through

CHEMICAL REACTIONS

PHYSICAL TRANSFORMATION

and simply

SHRINKS

On the other hand

SOIL SETTLEMENT INDUCE

VERTICAL MOVEMENT

and

CRACK

THE FULL HEIGHT

of a house

AND usually

SETTLEMENT CRACKS

open in the

ADJACENT INTERESECTING WALLS

and nowhere else in the house

PICTURE: Settlement Cracks

SOIL SETTLEMENT

Soil simply settles and

moves with time

TO CAUSE DAMAGE

Settlement must be

VARIABLE

or more technically

DIFFERENTIAL

PICTURE: Excessive movement of the house

LET'S LOOK AT OTHER AREA NOW

CONCRETE SLABS

MOST SLABS

HAVE CRACKS

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SHRINKAGE CRACKS

IS HARMLESS

and usually found in

location as shown in the

following drawing

DRAWING : Shrinkage crack locations in Concrete Slabs

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SOIL MOVEMENT CRACKS

NEEDS FURTHER INVESTIGATION

and usually found in

location as shown in the

folowing drawing

DRAWING: Soil Movement crack locations in Concrete Slabs

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