Element A: Substructure

Abstract

The advantage of using performance request for proposals are that they utilize the geotechnical engineer's professional judgment to evaluate the site and recommend the extent of soil and substructure investigation necessary for the proper design of the substructure. A soil boring log, which is prepared by the geotechnical engineer, identifies the layers of soil found at specific depths beneath the surface and lists several measured characteristics of this soil, which could impact the design of any structure built upon it. Footings lie under the basement, crawl space, or foundation walls, and transfer structural loads from the walls of the building to the supporting soil. Structural chemical grouting permeates sands with grouts and produces a stronger sandstone‐like strata that carries the loads. Testing of deep foundations is conducted to verify the load capacity and structural integrity of deep foundation elements.