Residential Structural Design for a Two-Story Renovation in Knoxville, Iowa

The Project Goal

The property owner was planning a renovation of an existing two-story residential property in Knoxville, Iowa. The structural scope was not limited to a single wall opening or isolated beam. The preliminary plan set organized several related pieces of work, including existing foundation areas, basement and crawlspace conditions, main-floor demolition, new framing support, upper-floor layout coordination, and roof framing replacement.

The goal of the package was to give the project team a coordinated structural basis for reviewing the proposed renovation and identifying where existing elements would remain, where framing needed reinforcement, and where new members or delegated design by others would be needed.

Why Engineering Was Needed

A two-story renovation can change how loads travel through existing framing. The plan set identified load-support concerns at the main floor, including new headers, new LVL beams, reinforcement at existing floor joists, and added stud support below floor framing. The drawings also noted foundation cracking, deteriorated masonry surfaces, crawlspace areas, roof-framing water damage, and the plan to replace existing roof trusses.

These conditions required structural coordination rather than a generic remodeling note because each item affects how loads are transferred from the roof and upper floor down through walls, beams, floor framing, and foundation elements. The drawing package helped organize those structural decisions so the owner, contractor, and project team could review the proposed work with a clearer understanding of the load path.

StructSolve’s Design Scope

StructSolve prepared a preliminary structural drawing package for the residential renovation. The package included general information, notes and specifications, a foundation plan, a basement plan, a main-floor demolition plan, a main-floor new work plan, an upper-floor plan, and a roof plan.

The design scope focused on documenting existing structural conditions and translating the proposed renovation into structural drawings. The foundation plan identified existing footing and wall footing lines to remain. The basement plan incorporated repair notes for foundation cracking and deteriorated mortar or masonry surfaces. The main-floor plans identified demolition areas and new structural framing. The roof plan coordinated replacement of the existing roof trusses by others and provided typical connector information for the truss-to-plate condition.

Key Structural Design Considerations

Several parts of the renovation required attention to load path and existing conditions. At the main floor, the drawings identified locations where existing headers and beams were to be removed and replaced. New work included header callouts, LVL beam callouts, and added support framing intended to provide uniform bearing for new beam conditions. The plan set also included joist reinforcement where upper-floor framing needed improved stiffness.

The basement and crawlspace notes addressed foundation cracking, deteriorated mortar or parging, localized inward displacement, and areas where moisture intrusion could contribute to further deterioration. The repair notes focused on cleaning and repairing affected masonry areas, sealing cracks with compatible materials, replacing significantly damaged masonry units where needed, repointing mortar joints, and monitoring repaired areas for continued movement or moisture-related changes. Those recommendations were included as design-direction and coordination notes, not as a claim that concealed conditions had been fully evaluated.

At the roof level, the drawings called for replacement of existing trusses with new roof trusses by others. That approach helped separate StructSolve’s structural coordination from delegated truss design and allowed the project team to coordinate the roof replacement with the broader renovation scope.

Drawing Package and Details

The preliminary plan set gave the project team a drawing-based roadmap for the structural work. It included design loads and general wood framing notes, along with plan sheets showing the foundation, basement, main-floor demolition, main-floor new work, upper floor, and roof. The new work plan identified primary structural framing elements such as headers, LVL beams, joist reinforcement, and closely spaced stud support below floor framing.

The roof plan included a connector schedule for truss-to-plate attachments and showed the general limits of roof replacement relative to the main-floor and upper-floor wall lines. The plan sheets also documented that final dimensions and existing conditions needed field verification, which is important on renovation work where concealed framing and foundation conditions may not be fully visible until demolition progresses.

Project Outcome

The preliminary design package supported planning for a coordinated residential renovation by bringing foundation, framing, and roof-scope information into one structural drawing set. It helped the project team identify what needed to remain, what needed to be removed, what needed to be reinforced or replaced, and where additional coordination or field verification was needed before later project decisions.

The available package was preliminary, so the documented outcome was planning support rather than confirmation of final construction, permit approval, or completed repairs. The appropriate public takeaway is that the drawings supported review, coordination, and next-step planning for the proposed renovation.