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FOUNDATION PLAN NEW DETACHED ADU 2039 N VICTORIA DR UNIT #2SANTA ANA, CA, 92706 24-1055 9/13/2024 1/4" = 1'-0" S101 Jeffrey Schaefer, P.E. (562) 850-1223 License Number - C91734 Expiration Date - Dec 31, 2026 3325 E 4th St. Long Beach, CA 90814 STRUCTURAL ENGINEERING 1. ON SITE VERIFICATION OF ALL DIMENSIONS AND CONDITIONS SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR AND SUB-CONTRACTORS. NOTES AND DIMENSIONS TAKES PRECEDENCE OVER SCALING OF THE DRAWING. EACH CONTRACTOR OR SUB-CONTRACTOR SHALL REPORT TO PROJECT OWNER AND DESIGNER ALL CONDITIONS WHICH PREVENT THE PROPER EXECUTION OF THEIR WORK. REFER TO ARCHITECTURAL DRAWINGS FOR ALL DIMENSIONS 2. NO DEVIATIONS FROM STRUCTURAL DETAILS SHALL BE MADE WITHOUT THE WRITTEN APPROVAL OF THE STRUCTURAL DESIGN ENGINEER. APPROVAL BY CITY INSPECTOR DOES NOT CONSTITUTE AUTHORITY TO DEVIATE FROM PLANS OR SPECIFICATIONS. 3. STRUCTURAL DESIGN DOES NOT CONSIDER EFFECTS OF MECHANICAL EQUIPMENT. 4. THE DESIGN ADEQUACY AND SAFETY OF ERECTION BRACING, SHORING, TEMPORARY SUPPORTS, ETC. IS SOLE RESPONSIBILITY OF THE CONTRACTOR AND HAS NOT BEEN CONSIDERED BY THE ENGINEER. THE CONTRACTOR IS RESPONSIBLE FOR THE STABILITY OF THE STRUCTURE PRIOR TO THE APPLICATION OF ALL SHEAR WALLS, ROOF AND FLOOR DIAPHRAGMS AND FINISH MATERIALS. STRUCTURAL DESIGN CRITERIA 1. SOIL BEARING CAPACITY EQUALS 2,000 PSF ACCORDING TO GEOLOGICAL SOIL REPORT BY TGR GEOTECHNICAL, INC DATED NOV 8, 2024 2. DESIGN VALUES ARE BASED OFF THE FOLLOWING CRITERIA: 2.1. RISK CATEGORY: II 2.2. GROUND FLOOR LIVE LOAD: 40 PSF 2.3. ROOF LIVE LOAD: 20 PSF 2.4. ROOF DEAD LOAD: 15 PSF (19 PSF WHERE SOLAR PANELS) 2.5. FLOOR LIVE LOAD: 30 PSF (BEDROOM AREA) 2.6. FLOOR LIVE LOAD: 40 PSF (OTHER AREAS) 2.7. FLOOR DEAD LOAD: 10 PSF 2.8. GROUND SNOW LOAD: 0 PSF 2.9. BASIC WIND SPEED: 95 MPH 2.10. EXPOSURE CATEGORY: B 2.11. ENCLOSURE CLASSIFICATION: ENCLOSED 2.12. SEISMIC SITE CLASS: D 2.13. SEISMIC DESIGN CATEGORY: D 2.14. RESPONSE MODIFICATION FACTOR: 6.5 2.15. SEISMIC DESIGN COEFFICIENTS: SDS=1.19, SD1=0.81 FOUNDATION 1. THE MINIMUM RECOMMENDED FOOTING DEPTH IS 24-INCHES BELOW THE LOWEST ADJACENT GRADE. THE MINIMUM RECOMMENDED FOOTING WIDTH IS 18 INCHES FOR CONTINUOUS FOOTING AND TWENTY-FOUR (24) INCHES FOR PAD FOOTINGS. ALL CONTINUOUS FOOTINGS OVERTOP OR NEAR DEMOLISHED POOL (SHADED REGION) TO BE PLACED OVER A MINIMUM OF THREE FEET OF ENGINEERED FILL. ALL UNCERTIFIED PREVIOUSLY PLACED FILL ÐHALL BE REMOVED AND REPLACED AS ENGINEERED FILL ALONG WITH THE MIN 3 FOOT FILL REQUIREMENT UNDER THE FOOTING. 2. PRIOR TO ANY FILL PLACEMENT TGR SHOULD OBSERVE THE EXPOSED SURFACE SOILS. THE SITE SOILS MAY BE RE-USED AS ENGINEERED FILL PROVIDED THEY ARE FREE OF ORGANIC CONTENT AND PARTICLE SIZE GREATER THAN 4-INCHES. ALL PARTICLES GREATER THAN 4-INCHES SHALL BE REMOVED AND DISPOSED OFFSITE. FILL SHALL BE MOISTURE-CONDITIONED TO OPTIMUM MOISTURE CONTENT AND COMPACTED TO A MINIMUM RELATIVE COMPACTION OF 90 PERCENT IN ACCORDANCE WITH ASTM D1557. ANY IMPORT SOILS SHALL BE NON-EXPANSIVE AND APPROVED BY TGR GEOTECHNICAL INC. 3. ANY VEGETATION AND/OR DEMOLITION DEBRIS SHALL BE REMOVED AND HAULED FROM THE PROPOSED GRADING AREAS PRIOR TO THE START OF GRADING OPERATIONS EXISTING VEGETATION SHALL NOT BE MIXED OR DISCED INTO THE SOILS 4. ANY REMOVED SOILS MAY BE REUSED AS COMPACTED FIL ONCE ANY DELETERIOUS MATERIAL OR OVERSIZED MATERIALS (IN EXCESS OF EIGHT INCHES) IS REMOVED. 5. GRADING SHALL EXTEND A MINIMUM OF SEVEN HORIZONTAL FEET OUTSIDE THE EDGES OF FOUNDATIONS OR EQUIDISTANT TO THE DEPTH OF FILL PLACED, WHICHEVER IS GREATER 6. DUE TO ELEVATED MOISTURE LEVELS IN THE SUBSURFACE SOILS, IT IS POSSIBLE THAT WET AND/OR YIELDING SOILS MAY BE ENCOUNTERED DURING SITE GRADING. AERATION OF WET SOILS AND STABILIZATION INCLUDING THE USE OF GEOTEXTILE FABRIC AND GRAVEL MAY BE REQUIRED BASED ON ACTUAL FIELD CONDITIONS DURING SITE GRADING 7. ALL CONCRETE SLABS INCLUDING DRIVEWAY AND HARDSCAPE SHALL BE A MINIMUM OF FIVE INCHES IN THICKNESS REINFORCED WITH A MINIMUM OF NO.4 BARS, SIXTEEN INCHES IN EACH DIRECTION POSITIONED IN THE CENTER OF THE SLAB AND PLACED ON APPROVED SUBGRADE SOILS. THE SUBGRADE MATERIAL SHOULD BE COMPACTED TO A MINIMUM OF NINETY (90) PERCENT OF THE MAXIMUM LABORATORY DRY DENSITY (ASTM D1557) TO A MINIMUM DEPTH OF THREE (3) FEET OR THE BOTTOM OF UNDOCUMENTED FILL (WHICHEVER IS DEEPER). PRIOR TO PLACEMENT OF CONCRETE, THE SUBGRADE SOILS SHOULD BE MOISTENED TO OPTIMUM MOISTURE CONTENT AND VERIFIED BY A TGR GEOTECHNICAL, INC FIELD REPRESENTATIVE. 8. A VAPOR RETARDER (15-MIL MINIMUM THICKNESS) SHOULD BE UTILIZED BENEATH ALL NEW SLABS 9. IN AREAS NOT ADJACENT TO EXISTING STRUCTURES OR PROPERTY LINES, SOILS MAY BE CUT VERTICALLY TO A DEPTH OF APPROXIMATELY FOUR (4) FEET BELOW ADJACENT GRADE. EXCAVATIONS DEEPER THAN 4 FEET SHOULD BE TEMPORARILY SHORED OR SLOPED BACK TO AT LEAST 1H:1V OR FLATTER FOR THE ENTIRE EXCAVATION. THE EXPOSED SLOPE FACE SHOULD BE KEPT MOIST (BUT NOT SATURATED) DURING CONSTRUCTION TO REDUCE LOCAL SLOUGHING. NO SURCHARGE LOADS SHOULD BE PERMITTED WITHIN A HORIZONTAL DISTANCE EQUAL TO THE HEIGHT OF CUT FROM THE TOE OF EXCAVATION UNLESS THE CUT IS PROPERLY SHORED. TEMPORARY EXCAVATION THAT EXTENDS BELOW AN IMAGINARY PLANE INCLINED AT 45 DEGREES FROM THE PROPERTY LINE OR BELOW THE EDGE OF ADJACENT EXISTING FOOTINGS WILL REQUIRE SHORING. 10. ALL GRADING AND OVEREXCAVATION SHALL CONFORM TO THE REQUIREMENTS OF THE SOILS REPORT PREPARED BY TGR GEOTECHNICAL, INC DATED NOV 2024 CONCRETE 1. ALL CONCRETE SHALL HAVE A MINIMUM COMPRESSIVE STRENGTH (F'C) OF 2,500 PSI WITH TYPE V CEMENT AND MAXIMUM WATER CEMENT RATIO OF .45. NO SPECIAL INSPECTION REQUIRED IF CONCRETE TRUCK MIX TICKET IS PROVIDED. 2. ALL REBAR REINFORCING SHALL BE ASTM A955 GRADE 60 (FY=60 KSI) 34'-0" 39 ' - 0 " 15 ' - 7 " A B C 1 2 3 1 2 3 A B C 2'-8"2'-8"14'-8" 5'4'-5"4'-7" 2' - 8 " 2' - 8 " 10 ' - 3 " 9' - 1 " 9' - 7 " HDU2 HDU5 HDU2 HDU2 HDU5 HDU2 CB46 HDU2 HDU2 HDU2 HDU2 HDU2 2' - 6 " THICKEN PERIMETER EDGE OF CONCRETE SLAB TO DEPTH OF 24" FOR 18" WIDTH. (SEE DETAIL 11/S105) THICKEN PERIMETER EDGE OF CONCRETE SLAB TO DEPTH OF 24" FOR 18" WIDTH. (SEE DETAIL 11/S105) THICKEN SLAB TO 24" DEPTH / 18" WIDTH BENEATH LOAD-BEARING WALL TO CARRY CEILING JOISTS LOAD. (DETAIL 13/S105) 11 S105 11 S105 11 S105 11 S105 12 S105 12 S105 13 S105 14 S105 15 S105 15 S105 LOCATION OF PREVIOUSLY DEMOLISHED POOL (NO POOL CURRENTLY EXISTS; RE-COMPACTED SOIL FROM FORMER DEMOLITION). THIS FILL IS UNSUITABLE FOR SUPPORT OF NEW STRUCTURE OR ENGINEERED FILL ALL CONTINUOUS FOOTINGS OVERTOP OR NEAR DEMOLISHED POOL (SHADED REGION) TO BE PLACED OVER A MINIMUM OF THREE FEET OF ENGINEERED FILL. ALL UNCERTIFIED PREVIOUSLY PLACED FILL ÐHALL BE REMOVED AND REPLACED AS ENGINEERED FILL ALONG WITH THE MIN Ó FOOT FILL REQUIREMENT UNDER THE FOOTING. N 5" CONCRETE SLAB, USE F'C MIN = 2,500 PSI. CONCRETE SLAB TO BE UNDERLAIN BY MINIMUM 3 FEET OF ENGINEERED FILL OR DEPTH OF UNDOCUMENTED FILL WHICHEVER IS DEEPER March 25, 2025, TGR Geotechnical, Inc (TGR) TGR has reviewed these plans to confirm that the geotechnical parameters shown on the plans/calculations are in general accordance with our report. Our signature on these plans shall not be considered as acceptance or review of the structural design and calculations. 3 2039 N Victoria Drive #24/28/2025