Attachment D - GEO RPT_City of Sunny Isles BLDG Dept Relocation_S&S UPLOADED

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City of Sunny Isles Building Department Relocation Geotechnical Exploration Report Sunny Isles Beach, FL March 29, 2024 UES Project No.: 0630.2400024.0000 Page 8 of 9 4.2 Slab-on-Grade Design Slab-on-grade construction may be used for the ground floor provided the soils are prepared as recommended in this report. A modulus of subgrade reaction of 150 pounds per cubic inch (pci) may be used in the design of grade level slabs bearing on well-compacted, granular fill. To minimize localized cracking under non-uniform loading, the slab should be adequately reinforced. Cracking can be further minimized by liberally jointing the slabs and by structurally separating them from the building walls and columns. In UES’s opinion, a highly porous base course under ground slabs is not needed. UES does recommend using plastic vapor barriers at least 6 mils thick. 5.0 EXCAVATION CONDITIONS In Federal Register, Volume 54, No. 209 (October 1989), the United States Department of Labor, Occupational Safety and Health Administration (OSHA) amended its “Construction Standards for Excavations, 29 CFR, part 1926, Subpart P”. This document was issued to better insure the safety of workmen entering trenches or excavations. It is mandated by this federal regulation that all excavations, whether they be utility trenches, basement excavations or footing excavations, be constructed in accordance with the OSHA guidelines. It is UES’s understanding that these regulations are being strictly enforced and if they are not closely followed, the owner and the contractor could be liable for substantial penalties. The contractor is solely responsible for designing and constructing stable, temporary excavations and should shore, slope, or bench the sides of the excavations as required to maintain stability of both the excavation sides and bottom. The contractor’s responsible person, as defined in 29 CFR Part 1926, should evaluate the soil exposed in the excavations as part of the contractor’s safety procedures. In no case should slope height, slope inclination, or excavation depth, including utility trench excavation depth, exceed those specified in local, state, and federal safety regulations. UES is providing this information solely as a service to UES’s client. UES is not assuming responsibility for construction site safety or the contractor’s activities; such responsibility is not implied and should not be inferred. 6.0 REPORT LIMITATIONS This consulting report has been prepared for the exclusive use of the current project owners and other members of the design team for this project. This report has been prepared in accordance with generally accepted local geotechnical engineering practices; no other warranty is expressed or implied. The evaluation submitted in this report is based in part upon the data collected during a field exploration. However, the nature and extent of variations throughout the subsurface profile may not become evident until the time of construction. If variations then appear evident, it may be necessary to reevaluate information and professional opinions as provided in this report. In the event changes are made in the nature, design, or locations of the proposed structure, the evaluation and opinions contained in this report shall not be considered valid unless the changes are reviewed and conclusions