Abstract
Anchor is a structural element as part of foundation that can take a variety of forms. Over the past four decades a wide variety of foundation anchor systems have been developed to satisfy the increasing demand for foundations with ever-higher pullout resistance. Some kind of soils have problem of cavity deforms inside it, and the reason of these cavities belong to two main reasons, natural cavities because of some chemical actions inside the soil and artificial reasons as human made like old building inside the soils. Experimental modeling was carried to study the capacity of anchor plate under effect of cavity inside the soil, small scale anchor embedded in sandy soil was carried in laboratory to study the capacity and the displacement for loaded plate anchor, the result for test shows reduced capacity for the plate capacity under appearance of cavity inside the effective soil area for the anchor.