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Home My WebLink AboutPROJECT PAPERWORKPROJECT TO REPLACE A_BEAM_FORA PORCH ROOF DAMAGED BY RAIN INTRUSION SINGLE FAMILY RESIDENCE 7961 SADDLEBROOK DRIVE PORT SAINT LUCIE FLORIDA, 34986 GITA J. PATEL Uj t�—q U. RECEIVED FEB 66 2019 ST. Lucle County, Permlhing SCANNED BY St. Lucie County pg.1, Beam Repair for Gita J. Patel at 7961 Saddlebrook Drive, Port Saint Lucie, FL 34986 REPLACE BEAM AT 7961 SADDLEBROOK DRIVE PROPOSEDIMPROVEMENTLOCATION: Address: 7961 Saddlebrook Drive, Port Saint Lucie, FL 34986 • Tax ID:3321-502-0025-000-7 • Site Plan Name: Sable Creek Phase II, • Lot: 76 • Project Name: Replace Porch Support Beam DETAILED DESCRIPTION OF WORK: • This project will replace the existing wood beam above the back porch with a steel wide flange beam. The existing microlam beam was water damaged. There are no changes to the size, architectural, or structural features of the porch. PROJECT NEED: • In February, 2019, during implementation of a curtain shutter by O'Donnells Storm Protection Company (separate permit), the beam was noted to have potential damage. • The stucco was removed to identify the issue and it was found that there was water intrusion, presumably from the gutter above, that damaged the microlam wood beam. COMPARISON OF EXISTING AND REPLACEMENT BEAM: Capacity in Pounds per Lineal Foot Existing 6" x 12" Micro Lam Beam 372 PLF Proposed W 10 X 17 Steel Beam 540 PLF pg. 2, Beam Repair for Gita J. Patel at 7961 Saddlebrook Drive, Port Saint Lucie, FL 34986 REPLACE BEAM AT 7961 SADDLEBROOK DRIVE GENERAL NOTES: 1. The purpose of this design is to facilitate replacement of a beam that supports the roof above the back porch that suffered some rain ingress, apparently from the screen gutter (the gutters were resealed in 2017). 2. This design is for use at 7961 Saddlebrook Drive, Port Saint Lucie, FL, 34986 only. 3. The scope of the project is to remove the existing water damaged microlam beam and replace it with a steel wide -flange beam. The exterior stucco will be replaced as necessary to restore to the existing house construction. 4. Care shall be taken to shore the existing roof prior to removal of any portion of the beam. 5. Additional stucco material removal may be required to correct any water damaged area. 6. After reinstallation of the beam, install metal wire lath around the beam and any location of soffit that was removed. 7. Once beam is inspected, O'Donnells Storm Protection company can finish installation of the curtain shutter in accordance with their currently open Building Permit. 8. Apply''/" of Masonry Stucco around the beam and any location of soffit that was removed. 9. Paint after the stucco has cured for 30 days. pg. 3, Beam Repair for Gita J. Patel at 7961 Saddlebrook Drive, Port Saint Lucie, FL 34986 REPLACE BEAM AT 7961 SADDLEBROOK DRIVE STRUCTURAL NOTES: 1. Once the existing beam is removed, inspect existing rafters and double up if there is water damage to them. Replace any wall sheathing that may be damaged. 2. Maintain the existing (Mitek) NFM45 Masonry over -wall beam hanger. If there is insufficient room to maneuver the new wide flange into position, the carbon steel hanger can be cut and restored with a Full Penetration (FP) weld. 3. Install 2 x 6 Pressure treated plate above the beam and prepare the beam for the plate below and 2 x 6, 2 x 10 to the sides of the beam. Use 3/8" Machine Screws with nuts. Bolts on Flanges and webs to be 2'- 0" OC and staggered so that none of the holes on the flange or on the web are aligned (Reference Figures 1, 2, and 3). 4. Install the beam using a hydraulic lift. Adequate precautions shall be taken for personnel safety since the beam will weigh approximately 340 pounds. 5. Use 2 - 16d common nails to attach each existing roof rafter to the new beam plate. 6. Reinstall the existing hurricane tiedown anchors to the new beam. 7. Install 2 bumper plates and expansion anchor per Figure 4, each end of beam. 8. Install blocking on either side of the Wide Flange web as shown and secure with 3/8" bolts. 9. Install W pressure treated plywood sheathing (or board) on both sides of the beam and any area that was removed for the soffit. Apply 2 layers of 15# felt over the new plywood. 10. Install a 514 X 6 Pressure Treated Board on the outside of the beam to allow solid mounting of a hurricane curtain shutter (or stucco) to be installed by O'Donnell Shutter (note they have a separate permit for that work). The shutter support angle will be anchored through the siding into the 2 x 6 with blocking behind. 7961 Saddlebrook Drive Port Saint Lucie, FL 34986 Engineer: Michael F. Moran, PE 47317 7961 Saddlebrook Drive Port Saint Lucie, FL 34986 oal�l pg. 4, Beam Repair for Gita J. Patel at 7961 Saddlebrook Drive, Port Saint Lucie, FL 34986 REPLACE BEAM AT 7961 SADDLEBROOK DRIVE Figure 1 — Cross Section Retie existing tiedown straps to the new beam 3/8" Bolts @ 2 Ft OC / Staggered / counter sink where required /typical 5 bolt line locations WSO x 17 Wide f Flange Beam 2x10PT I h" PT Plywood or PT board I %" Stucco over felt and lath I Y2" Stucco over felt and lath j W PT Plywood 2x6PT i Alum Flashing / Drip board 1 x 6 PT (Blockins) Channel and bolts by Shutter Company s 1 x 6 PT or stucco 2 x 6 PT, Typical Top and Bottom Owner: Gita J. Patel 7961 Saddlebrook Drive Port Saint Lucie, FL 34986 Engineer: Michael F. Moran, PE 47317 — ---- 7961 Saddlebrook Drive 4 )(L' Port Saint Lucie, FL 34986 )' jf Via pg. 5, Beam Repair for Gita J. Patel at 7961 Saddlebrook Drive, Port Saint Lucie, FL 34986 REPLACE BEAM AT 7961 SADDLEBROOK DRIVE Figure 2 & 3 Figure 2 - Elevation 3/8" bolts at 24" I 1 9- 3" typ, from edge of 2 x 6 Existing Beam Hanger, typ both sides Figure 3 - Plan View 12" typ, 18 flange Bolts total I 16" of WF 7961 Saddlebrook Drive Port Saint Lucie, FL 34986 Engineer. Michael F. Moran, PE 47317 7961 Saddlebrook Drive -" Port Saint Lucie, FL 34986 U J pg. 6, Beam Repair for Gita J. Patel at 7961 Saddlebrook Drive, Port Saint Lucie, FL 34986 Figure 4 - Section 7961 Saddlebrook Drive Port Saint Lucie, FL 34986 Engineer. Michael F. Moran, 7961 Saddlebrook Drive Port Saint Lucie, FL 34986 PE 47317 I Existing Top Flange Hanger New Wide Flange Beam Yz" x 2" x 4" PL with Y2" Expansion Anchor pg. 7, Beam Repair for Gita J. Patel at 7961 Saddlebrook Drive, Port Saint Lucie, FL 34986 REPLACE BEAM AT 7961 SADDLEBROOK DRIVE - - -Excerpts from Calculation 1 Notes: _ Design Code: Florida Building Code, 2017 (FBC) Wind Code: ASCE-7 2016 Seismic Code: Florida Building Code - Residential (FBC-R) 2017 Building Type: Single Family Residence (SFR) Risk Factor: II Reference FBC T1604.5 Analysis Method: Allowable Stress Design (ASD) Reference FBC 1605.3.1 Structure Type: Partially Enclosed, Low Rise ASCE Section 26.2 14 Summary Value Units Comment Beam Size: W10x17 Total weight 340 Ibs Compression Flange Support Full 5/16" Minimum size machine or stove bolts Maxmum Wind Loading -39.37 PSF Includes External and Internal Loading per ASCE 7 Governing load Downward 80.0 PSF 11% Margin above calculated loading Governing Load Upward 32.0 PSF 13% Margin above calculated loading Maximum Deflection 0.53 In 25% Margin on allowable of U360 Tiedown load on Beam Hangers -928.0 LBS 40°/u Margin on Catalog allowalble Owner: Gita J. Patel 7961 Saddlebrook Drive Port Saint Lucie, FL 34986 Engineer. Michael F. Moran, PE 47317 7961 Saddlebrook Drive Port Saint Lucie, FL 34986. pg. 8, Beam Repair for Gita J. Patel at 7961 Saddlebrook Drive, Port Saint Lucie, FL 34986 REPLACE BEAM AT 7961 SADDLEBROOK DRIVE Reference Original House Plan pg. 9, Beam Repair for Gita J. Patel at 7961 Saddlebrook Drive, Port Saint Lucie, FL 34986