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HomeMy WebLinkAboutB17-0528 000-000-000 (5)4 RECEIVED MAY 2 5 2017 TRI3 AND ASSOCIATES ENGINEERING 1574 Lilac Way, Paradise CA 95969 BUTTE Cell (530)966-6849 COUNTY` May 3, 2017 (MAY 2 2 2017 TRB+Associates DEVELOPMENT SERVICES RE: Plan Review for: Salas Residence—New SFD Project Address: 0 Hogan Rd, Cohasset Agency App. No: B17-0528 TRB+ Project No: PC 17.054.107.1 ` �• I have numbered the following responses to coincide with your review of the Salas plans. ARCHITECTURAL COMMENTS Al. Deferred Submittals section added to the covet sheet of the -plans. A2. Now included in the Deferred Submittals section on the cover sheet of the plans. A3. Note 19 removed. See new note 1 under WUI on C sheet. A4. New note section added "General Exterior Notes" placed on sheet A2, see note 1. A5. New note section added "General Exterior Notes" placed on sheet A2, see note 2. A6. See new note called out in the upper left comer of the foundation plan on sheet S1. AT New note added to that window indicating safety glazing is required. A8. New note section added "General Exterior Notes" placed on sheet A2, see note 10. A9. Already on plans, see Gereral Note 6 on C sheet. A10. See new note 16 under "General Practice Notes" on C sheet. A11. New note added in garage stating where drywall should be placed on sheet Al. GREEN BUILDING COMMENTS GB I. New D3 and D4 sheets added with CalGreen Mandatory Measures checklist. Butte County's most recent checklist states "2013 Building Code" so I had to find another on a non -Butte County web site, hope that this satisfies the requirement. 4 GB2. See new note 19 under "Electrical Notes" on sheet El. 1 ENERGY COMMENTS ENI. Notes under "Permanent Int. Luminaries" have been changed to match new code, see sheet E1 for changes. EN2. See new Energy note 14 on sheet A1. See also note by water heater on sheet Al referring to note 14 under Energy notes. EN3. `New note added to the Electrical plan on sheet E1 designating a fan to be the IAQ. MECHANICAL COMMENTS , M1. See new note 1 under "Mechanical Notes" on sheet Al. M2. See new note 2 under "Mechanical Notes" on sheet Al. PLUMBING COMMENTS P1. See new note 1 under "Plumbing Notes" on sheet A1. See also note on the floor plan at the water heater in the garage. P2. See new note 2 under "Plumbing Notes" on sheet A1. See also note on the floor plan at the water heater in the garage P3. See new note 3 under "Plumbing Notes" on sheet A1. P4. See new note 4 under "Plumbing Notes" on sheet A1. WILDFIRE EXPOSURE CONSTRUCTION REO. W 1. See new note #3 under "General Exterior Notes" on sheet A2. W2. See new note #4 under "General Exterior Notes" on sheet A2. W3. See new note #5 under "General Exterior Notes" on sheet A2. W4. See new note #6 under "General Exterior Notes" on sheet A2. W5. See new note #7 under "General Exterior Notes" on sheet A2. W6. See new note #8 under "General Exterior Notes" on sheet A2. W7. See new note #9 under "General Exterior Notes" on sheet A2. STRUCTURAL COMMENTS S 1. The 1.3 factor now accounted for in seismic calculations. S2. The 2'6" walls are not used in the lateral calculations any more. Necessary adjustments were made to the other shear wall in this line. S3. See new letter provide that states as requested. = 1i S4. See new sheet FND3 in Structural Calculations which now shows no increase on any foundation load capacity. Ran calculations for worst case shearwall boundary element and did not find any location in which the bearing capacity was loaded more than stated in CBC table 1806.2 S5. Calculations were made and interior bearing walls were changed to 2x6 to increase load carrying capacity. See Roof Framing sheet S3 for changes and notes. 2x6 interior bearing walls are now shown on all plans. S6. Calculations were made and new notes were added to the plan to call out direct bearing under certain trusses that had large loads. a. Trusses that had loads too large to be placed mid span are now called out to have direct bearing below. b. Column loads were checked and now the studs that might have had an issue are now doubled up. c. The top plate over the back wall of the garage is the only place that this appears to reach the threshold of capacity of but the loads are within acceptable tolerances. d. By the time the direct loads from the trusses reach the pressure treated materials the loads are distributed evenly enough to not need to check the crushing capacity of a singular point. The capacity of the Pressure treated material is within acceptable tolerances. e. These calculations were already made on sheet FND3 of the structural calculations S7. All but one of the shear lines used have continuity. The front wall is the only wall that is appears to have discontinuity. In designing line C I could have designed each wall independently and done the calculations that way but showed them all as one line in which case the loads would be distributed on the magnitude of 6% different than they are but the outcome would have ended up the same. Shear blocking was called out on the back wall of the garage and detailed. On the other hand, the drag trusses and connections were not called out and are now on the Roof framing page, Sheet S3. One strap was added to tie the garage back wall to the rest of the roof and two notes were added calling out nailing to the drag trusses. The other shear walls transfer their loads through the blocking at the eaves and the 6" Timberlok at each truss, see detail 7/D1 S8. Detail 12/D1 has been added to the detail sheet and a new note has been added to sheet S3 referencing the new detail S9. Detail 14/1)1 has been added to show a typical hold down installation at the foundation and a note has been added to both sheets S 1 and S5 referencing the detail. S 10. The note was changes on sheet S 1 to add more detail of the grade beam. If you have any questions regarding the plans or calculations please email or call my cell at (530) 966-6849. Thanks, Luke A. Wentland, PE