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Home My WebLink About09-21-2022 Byerly Structural PlanMay 24, 2021 Chris Byerly 12563 Jeffries Pl Carmel, IN 46033 Phone: 317.506.7028 Email: CByerly123@gmail.com RE: STRUCTURAL INSPECTION Thank you for allowing Leibering Structural Engineering (LSE) to provide structural engineering services at the residence located at 12563 Jeffries Pl in Carmel, Indiana. The homeowner has demo’d all of the first-floor ceiling and wall drywall and requested a follow-up inspection to determine the additional structural work necessary to complete a remodel of the property. Scope The first-floor interior of the home was inspected. The inspection was completed on May 12, 2022. Home Description This single-family home was originally constructed in 1973. The home is wood construction above grade (two stories) and concrete masonry unit walls and piers below grade forming a crawlspace. 09/26/22 Observations and Recommendations Interior Inspection Observations The main concern observed during the inspection is the excessive notching and drilling of the existing floor joists that was completed in order to run plumbing pipes and electrical wires (see photos 1-4 for typical improper notching/drilling). The majority of the improper drilling and notching was also improperly repaired. However, one section of floor joists about the eastern half of the living room was properly repaired by sistering each 2x10 floor joists with (2) 2x8 full length joists (Photo 5). LSE observed crushing at the end of a joist in the hallway (Photo 6). LSE also observed deterioration and improper notching of the first-floor and second floor rim boards at the south end of the living room (Photos 7-8). The stair header at the north end of the home is being supported by a single 2x10 joist and there are no hangers installed at any of the stair header framing (Photos 9-10). Lastly, LSE observed the deck joists at the northeast end of the home do not have a proper back-span for the length of cantilever they are providing for the deck (Photos 11). Framing Recommendations Below are the following interpretations and recommendations for the framing observations noted above. Refer to the end of the report for IRC Figure R502.8 to determine which existing notches and holes are inadequate. 1. The floor joists above the east side of the living room that have been reinforced with 2-2x8 joists are properly reinforced. It is Leibering Structural Engineering’s professional opinion that these joists are structurally sound and do not need additional structural reinforcing. 2.Inspect all other second-floor joists for improper notching and drilling as compared to IRC Figure R502.8. Where possible, replace or sister any improperly notched floor joist with a new full length 2x10 joist. Where a new full-length sister is not possible, utilize one option below. a. Repair each improper notch and hole with a new piece of 2x10 that extends 24” beyond the notch/hole on each side. Attach this 2x10 to the existing 2x10 using (2) rows of 3” structural wood screws at 16” on center. b. Repair each improper notch and hole with a new piece of 2x8 on each side of the existing joist. The new 2x8 pieces must extend 24” beyond the notch/hole on each side and be attached to the existing joist using (2) rows of 3” structural wood screws at 16” on center. c. Repair each improper notch using the following Simpson Straps centered at each location. Note that if there are multiple notches/holes next to each other, the contractor must install a longer strap to ensure the LSTA straps extend 12” beyond the notches/holes on each side and the HRS straps extend 6” beyond the notches/holes on each side. i. Install an LSTA24 strap on the bottom side of the joist. ii. Install an HRS12 strap on each face of the joist below the notch/hole. 3.Sister all existing 2x10 joists above the hallway using short 2x10 pieces that span from hallway wall to hallway wall. Attach all new 2x10s to existing joists using (2) rows of 3” structural screws at 16” on center. 4.Sister the existing single 2x10 joist supporting the stair header with an additional 2x10 wood joist. Attach the new joist to the existing joist using (2) rows of 3” structural wood screws at 16” on center. 5.Install appropriate joist hangers at all of the stair header framing. This includes single joist hangers at the cut joists at the stair header and a double joist hanger between the south end of the existing stair header and the sistered floor joist in Repair #4. 6.Install a new 4x4 wood post under the northeast and southeast corners of the existing 2nd floor wood deck. These new 4x4 wood posts must be installed on 12” sonotube concrete piers with the bottom of each pier being 30” minimum below grade. 7.Sister each portion of damaged/notched rim board with a new rim board on the interior side of the home. The sistered portion shall extend 24” beyond the damaged/notched area. After install the new sistered portion, remove and replace the damaged/notched sections of existing rim board. Connect all new sections of rim board with (3) rows of nails at 12” on center. 09/26/22 8. There are existing bottom chords and cut web members of wood roof trusses that were left behind after a previous second- story addition. These may be removed at the homeowner’s or contractor’s option. Additional Design As part of the remodel, the homeowner is also going to replace the existing built-up wood beams in the living room with a single steel I-beam. The design of this new beam utilizes a floor live load of 40psf, floor dead load of 10psf, attic live load of 10psf, attic dead load of 10psf, total deflection limit of L/240 and a total live load deflection limit of L/360. The contractor must perform the first-floor rim board repairs described above prior to replacing the existing beam. The new beam required to replace the existing wood beams in the living will span approximately 17’-0” and have tributary floor and attic widths of 13’-3” and 14’-3”. The new beam will be a W8x28 wide flange beam, grade A992 50ksi. Each end of the beam will be supported by a new 3” or 3.5” steel jack post with a minimum allowable load rating of 9,000 pounds. The exterior end of the beam will bear over the exterior strip footing. The interior end of the beam does not appear to bear over an existing foundation. As such, the contractor must install a new 2.5’x2.5’x12” concrete footing with a CMU pier in the crawlspace to bear the interior post over. The interior post may bear on the subfloor but the contractor must ensure solid blocking is provided between the base of the post of top of the CMU pier. It is likely that an existing foundation will conflict with the new foundation – in such case, the contractor shall pin the new foundation to the existing foundation using 8” long #4 rebar at 12” on center. The new foundation may be an L-shape to form around the existing foundation but a minimum bearing area of 6 square feet must be established with the new foundation. Certification Leibering Structural Engineering certifies that after the Framing Recommendations and Additional Design work are complete, the reinforced joists and new beam are structurally sufficient to support the IRC required live and dead loadings. Closing Please note that the inspection was only visual in nature, and there was not testing or material samples taken of any components in the house. The observations and recommendations are professional opinions based on engineering principles and evidence visible at the time of the inspection. Further information such as soil analysis, material samples, and load-testing would be required to confirm the opinions or calculate the exact structural capacity of building components as they exist today. Lastly, please note that due to the subjective nature of this work, it is possible for other professionals to have differing opinions or interpretations of the abovementioned observations. Sincerely, Justin Leibering PE, SE Leibering Structural Engineer, LLC 09/26/22 IRC FIGURE R502.8 09/26/22