Instructions: the following information is available for the study area; located in the province of lima: 1. the wasteland has small vegetation (shrubs) throughout its area; that can be dug manually there are no trees the soil is made of loose gravel. 2. does not present accumulation of debris. 3. there are no objects totally or partially buried. 4. there are no recoverable monuments or structures. 5. there is a plain concrete slab of rectangular dimensions (5mx2.5m) and 10cm thick inside the floor. leaning on the ground. contains plants - sections - structural development with details