New Residential Building Structural Design

Request for Structural Engineering Services – ICF Retaining Wall (New Glasgow, NS) ​Project Description: We are constructing a 30’ x 25’ detached garage with a second-story suite in New Glasgow, NS. The foundation is an ICF system (Fox Blocks, 6” concrete core) built on continuous stepped footings. The general building dimensions, wood framing, and 16” footing steps are designed under prescriptive NBC Part 9 guidelines. ​However, due to a sloping site, the foundation design includes a rear ICF wall that functions as a retaining wall holding internal structural fill. We require a Part 4 structural stamp strictly for this internal retaining condition and the top-of-wall restraint. ​Specific Scope of Work Required from Engineer: ​1. Vertical Rebar Schedule for 12’ Rear ICF Wall ​The rear ICF wall has a total height of 12’-0” (from the top of the footing at EL. -12’-0” to the slab line at EL. 0’-0”). ​The 6” concrete core is retaining 12’ of internal structural gravel against 4’ of exterior soil (an 8-foot unbalanced fill condition). We require an engineered vertical rebar schedule to resist the outward lateral earth pressure. ​ ​Drawings Provided: I can provide the original architectural foundation plans and cross-section elevations. Showing benched native soil, footing steps, and grade lines for your review. ​Please let me know your availability to provide a stamped rebar schedule and tie-in detail for the municipal building inspector, along with your estimated fee for this scope.