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HomeMy WebLinkAboutLETTER Foundation Single Family Residence 1655 Continental Peaks Circle 2023-08-14BAS1S.com Es t e s P a r k , C o l o r a d o 8 0 5 1 7 16 9 2 B i g T h o m p s o n A v e , S u i t e 1 0 0 S1.0 Sheet No: 970.586.9140 Sheet Title: Date: Architecture, P.C. Issue: © BASIS FOUNDATION 4/24/24 REV3 Wi l d f i r e D e v e l o p m e n t TB D C o n t i n e n t a l P e a k s C i r c l e Es t e s P a r k , CO 80 5 1 7 A R C H I T E C T U R E P . C . Lo t 1 2 R a n c h 4/24/24 30 " M I N . B E L O W G R A D E 4" M I N . 1'-4" 8" 8" (2) #4 CONTINUOUS UNDISTURBED SOIL 2'-0" x 6" #4 HOOK DOWEL @ 32" o.c. CONT. HORIZ. #4 @ 18" o.c. VERT. #4 @ 32" o.c. 1/2"x10" ANCHOR BOLT w/ 3"x3"x3/16" WASHERS @ 32" o.c. 2x6 PT MUDSILL WITH GASKET 6 MIL. GROUND COVER OVERLAP & TAPE SEAMS FLOOR HUNG OFF FOUNDATION WHERE INDICATED RE: S2.0 TYPICAL FOUNDATION WALL 2 2 2 2 3 333 3 3 6'-0"26'-0"14'-0"11'-0" 1' - 6 " 4' - 6 " 14 ' - 0 " 22 ' - 6 " 4' - 0 " 4'-0"33'-0"21'-0"14'-0"11'-0" 29'-0" 1'-4"13'-4"5'-0"1'-4"5'-0" 1'-0"24'-0"1'-0" 6' - 0 " 2' - 0 " 2 1/2" 2 1 / 2 " 15 ' - 0 " 26 ' - 0 " 10'-3 1/4"13'-9 1/2"10'-9 1/4"21'-6 1/2"11'-1/4"10'-3 1/4" 11'-2 1/8"10'-1 3/8"10'-1 3/8"13'-8 5/8" 14 ' - 2 7 / 8 " 11 ' - 1 5 / 8 " 14 ' - 3 1 / 2 " 26'-0" 5' - 3 " 3 5/8" 20'-4 3/4" 4' - 8 1 / 2 " 3'-4" 2' - 0 " 1'-0" SIMPSON STHD STRAPS AS LABELED, TYP. SL O P E 2 % FULL-WIDTH MUDSILL AT FULL-HT. WALLS (AT PATIOS) STAIRS AT DOOR 48"x48"x12" PAD, (5) #4 BAR EA. WAY MID- DEPTH, TYP. OF 4 3 1/2" SCHED. 40 STL. PIPE COLUMN w/ 5"x5"x1/4" BEARING PLATES,TYP. OF 4 12" SONOTUBE w/ #4 VERT. ON BIGFOOT® BF36 OR 30"x30"x8" FOOTING TO MIN. 30" BELOW SLAB, 8" SQ BLOCK OUT IN SLAB AT POST BEARING, PROV. ABU88 POST BASE, TYP. OF 2 DROPPED FND. WALL FOR ROLLED SLAB EDGE AT DOOR ROLLED EDGE SLAB RE: DETAIL BEAM POCKET IN FND. EA. END BEAM POCKET IN FND. 24"x24"x10" PAD, (3) #4 BAR EA. WAY MID-DEPTH 30"x30"x10" PAD, (4) #4 BAR EA. WAY MID- DEPTH, TYP. OF 4 6x6 or (4) 2x6 STUDPACK POSTS, TYP. U.O.N. SIMPSON HD12 OR HDU14 (2) SIMPSON HDU8 EA. END (4 TOTAL) SL O P E 2 % CONC. STEP (2) EQ. RISERS MAX 7 3/4" SL O P E 2 % 24"x40"x10" PAD w/ #4 BAR (3) LONG (4) SHORT, PROVIDE MIN. 10" DIA. PIERS TO POSTS, PROVIDE ABU88 POST BASE SIMPSON HDU11 w/ GALV. ALL-THREAD, TYP. OF 4 THIS WALL (T.O. WALL = 99'-9 3/4") [T.O. FOOTING = 94'-9 5/8"] (T . O . W A L L = 9 8 ' - 5 " ) [T . O . F O O T I N G = 9 5 ' - 5 " ] 4" REINFORCED CONC. SLAB ON COMPACTED FILL, W2.5x2.5 WELDED WIRE MESH MID-DEPTH SLOPE SLAB APX. 2% OUT DOOR CRAWL FLOOR MIN. 6 MIL. POLY VAPOR BARRIER GROUND COVER TO T.O. FOOTINGS, LAP & TAPE SEAMS (T.O. WALL = 97'-6") [T.O. FOOTING = 95'-0"] (T.O. WALL = 98'-9 5/8") [T.O. FOOTING = 94'-9 5/8"] (T.O. WALL = 99'-9 3/4") [T.O. FOOTING = 94'-9 5/8"] (T.O. WALL = 99'-9 3/4") [T.O. FOOTING = 94'-9 5/8"] (98'-9 5/8") [94'-9 5/8"] (9 8 ' - 0 " ) [9 5 ' - 5 " ] (98'-9 5/8") [95'-5"] 10 10 HDU8 1010 10 RJ 10 RJ10 R J 10 R J 10RJ 10 HDU8 10 HD 1 2 HD U 1 4 HD U 1 4 HD 1 2 4" CONC. SLAB ON COMPACTED FILL, SLOPE SLAB APX. 2% 4" CONC. SLAB ON COMPACTED FILL, SLOPE SLAB APX. 2% 10 (T.O. WALL = 99'-9 3/4") [T.O. FOOTING = 94'-9 5/8"] HDU11 HD 3 B HD 3 B HD 7 B (T . O . W A L L = 9 9 ' - 9 3 / 4 " ) [T . O . F O O T I N G = 9 4 ' - 9 5 / 8 " ] HDU11 HDU11HDU11HDU8HDU8 1/A4.0 1/A4.0 2/ A 4 . 0 2/ A 4 . 0 1/A4.1 1/A4.1 3/ A 4 . 1 3/ A 4 . 1 3/A4.0 3/A4.0 2/ A 4 . 1 2/ A 4 . 1 DROPPED FND. WALL FOR ROLLED SLAB EDGE AT O.H. DOORS APX. EXIST. GRADE - 96'-2" APX. FIN. GRADE - 97'-8" T.O. SLAB +/- 99'-2 1/4" APX. EXIST. GRADE - 99'-0" APX. FIN. GRADE - 98'-3"APX. EXIST. GRADE - 100'-0" APX. FIN. GRADE - 99'-0" APX. EXIST. GRADE - 100'-4" APX. FIN. GRADE - 99'-6'APX. EXIST. GRADE - 99'-10" APX. FIN. GRADE - 99'-6' T.O. CRAWL GROUND +/- 95'-0" T.O. SLAB +/- 98'-1 1/2" T.O. SLAB +/- 99'-11 1/4" APX. EXIST. GRADE - 99'-10" APX. FIN. GRADE - 99'-0" APX. EXIST. GRADE - 97'-9" APX. FIN. GRADE - 97'-9" APX. EXIST. GRADE - 99'-6" APX. FIN. GRADE - 98'-3" APX. EXIST. GRADE - 98'-6" APX. FIN. GRADE - 98'-3" APX. EXIST. GRADE - 98'-6" APX. FIN. GRADE - 98'-0" APX. EXIST. GRADE - 97'-6" APX. FIN. GRADE - 97'-9"APX. EXIST. GRADE - 98'-0" APX. FIN. GRADE - 98'-0" T.O . S L A B +/- 9 8 ' - 5 " T.O. SLAB +/- 97'-11" T.O. SLAB +/- 99'-11 1/4" REF N 11 1 1 1 2 1/4" = 1'-0" Foundation 2015 IRC FOOTING AND FOUNDATION NOTES FOUNDATION DESIGN 1. Design of footings is based upon an assumed allowable soil bearing pressure of 2,000 pounds per square foot on decomposed granite bedrock below frost depth. 2. Footing elevations indicated are based upon estimated grades. The Excavation contractor shall ensure depth of footing excavation is sufficient to ensure placement of footing s on natural, undisturbed soil or bedrock and below frost depth of 30-inches. All footing, thickened slab and bearing pads should be set back a minimum of 1 foot for each vertical foot of cut 3. Provide continuous reinforcing at footing and wall steps and ones detailed. REINFORCED CONCRETE 4. All structural concrete shall develop a minimum 28-day compressive strength of 3000 psi. Fc = 3,000 psi @ 28 days with 5% air (+/- 1.5%) 5. Place concrete continuously without horizontal cold joints. 6. Provide sawcut control joints in slab at 10' O.C. max, each direction. Minimum depth = 1" REINFORCING STEEL 7. All detailing, fabrication, and placement of reinforcing steel shall be in accordance with the 'Manual of Standard Practice for Detailing Reinforced Concrete Structures' - ACI 315. 8. All reinforcing shall be deformed bars conforming to ASTM A-615, Grade 60, except ties, which shall be deformed bars, Grade 40. 9. At splices in reinforcing, lap bars 36 diameters. At corners, make horizontal bars continuous or provide corner bars. 10. Vertical reinforcing: # 4 bars as detailed on drawings 11. Horizontal reinforcing: #4 bars as detailed on drawings. 12. Minimum concrete protection for reinforcement shall be in accordance with ACI 318 and as follows, u.o.n. Concrete poured against earth: 3-inches Concrete in forms: 2-inches Slabs: 3/4-inches 13. Welded-wire fabric shall conform to ASTM specification A-185, Grade 65 and shall be lapped one full mesh at side and end splices and wired together. 14. Provide all accessories necessary to support reinforcing. All reinforcing shall be held securely in proper position in accordance with ACI 318. 15. All bolts (including anchor bolts) shall comply with ASTM A307. Structural steel members, including plates and angles, shall be ASTM A36. Anchor bolts shall be spaced as detailed, but not more that (1) one foot from corners. Hold-down anchors shall be either: a) threaded rod (size per hold-down spec) + Simpson AT-XP, min 12" embed, or b) cast-in-place Simpson PAB8 or eq, min 10" embed. DRAINAGE AND BACKFILLING 16. All foundations require subsoil drainage system, per IRC R405, and are considered part of the foundation design. Provide a 4-inch diameter perforated PVC footing drainpipe at perimeter of foundation. Surround pipe with minimum 12-inches of washed, rounded gravel, minimum size = 3/4-inch diameter. Drain to daylight. Subsoil drain water shall not discharge into the public sewer system. 17. Damp proof exterior walls with emulsified asphalt damp- proofing or Deco-20 acrylic coating. 18. Ensure a minimum 2% perimeter grade slope away from the building on all sides. 19. Backfill equally on both sides of walls in 12-inch vertical lifts. Compact backfill under exterior and interior slabs. Do not backfill foundation walls greater than 4-feet high unless braced by floor system or other approved bracing method. Compact backfill to 95% standard proctor, ASTM 698. 20. Aggregate base under slab to be 4-inches washed pea gravel - 3/8-inch minimum to 3/4-inch maximum diameter. SPECIFICATIONS 21. Footing tolerance = width +/- 1/2-inch; thickness: +/-1/2-inch; level: +/- 1/4-inch in 30 feet; square: +/-1/2-inch in 20 feet. 22. Foundation wall tolerance = level: +/-1/4-inch in 30 feet; square: +/-1/2-inch in 20 feet; plumb: +/-1/4-inch in 8 feet. 23. Slabs on grade = level: +/- 1/4-inch in 10 feet, +/-3/4-inch overall maximum. 24. All concrete shall have a maximum slump of 5-inches. Concrete shall be rodded or vibrated to eliminate "honeycombing".