Grade beams are provided in between isolated footings. Thus under reamed piles and column on isolated footing are connected by grade beams and then the wall is constructed over it. These beams are stronger than the plinth beams. The recommended minimum depth of grade beam is 150 mm and minimum three numbers of 8 mm bars of Fe415 should be provided at top and bottom (Fig. 19.14).
Figure 19.14 Details of grade beam
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