1427 100TH ST SW 110 2021-12-13 - Laserfiche WebLink

a • If footings are rectangular, orient them so that the long side is perpendicular to the home's I-beam. • Place the bottom of footings on undisturbed soil or fill compacted to at least 900% of its maximum relative density. • In freezing climates protect footings from the effects of frost rave in accord- ance with any LAHJ requirements (see Prepare the Site, p. 10). Place the bot- tom of the footings below the frost line (insulated foundations and monolithic slabs are other frost protection options not covered in this manual). • Make sure the top surface of the footing is level, flat, and smooth. • In accordance with the American Concrete Institute publication ACI-308, main- tain curing measures before construction or installation onto the concrete foot- ing begins, until a minimum of 70% of the specified 2"ay compressive strength has been achieved. The ACI recommended time to attain this level of strength is seven days for ASTM C150 Type 1 mixtures and 10 days for Type II mixtures. Full design live and dead loads may not be applied until the 28-day duration has elapsed for achieving full strength. Manufacturer's Instattati Excavation. If excavation is required, mark the footing kxxtions on the ground with stakes before beginning to dig.