5. Sheet 4 — Main Floor / Floor Plan Standard Notes (Egress, Glazing, Stairs, Fire & Remodel)
A. New Construction & General Floor Plan Notes (SoftPlan Main.pag)
FLOOR PLAN CODE NOTES: 1. EMERGENCY ESCAPE & RESCUE WINDOWS (IRC R310): EVERY BASEMENT AND EVERY SLEEPING ROOM SHALL HAVE AT LEAST ONE OPERABLE EGRESS WINDOW: MIN. 5.7 SQ. FT. NET CLEAR OPENING (5.0 SQ. FT. AT GRADE FLOOR), MIN. 24" NET CLEAR HEIGHT, MIN. 20" NET CLEAR WIDTH, MAX. 44" SILL HEIGHT ABOVE FLOOR. WINDOW WELLS >44" DEEP REQUIRE MIN. 9 SQ. FT. (36" x 36") AREA AND PERMANENT LADDER/STEPS. 2. SAFETY GLAZING IN HAZARDOUS LOCATIONS (IRC R308.4): TEMPERED SAFETY GLAZING IS REQUIRED IN ALL DOORS, WITHIN 24" ARC OF ANY DOOR, WITHIN 60" VERTICALLY OF TUB/SHOWER STANDING SURFACES, ADJACENT TO STAIRS/LANDINGS (<36" ABOVE WALKING SURFACE), AND WHERE GLAZING IS >9 SQ. FT. WITH BOTTOM EDGE <18" ABOVE FLOOR. 3. SMOKE & CARBON MONOXIDE ALARMS (IRC R314 & R315): PROVIDE HARDWIRED, INTERCONNECTED SMOKE ALARMS WITH BATTERY BACKUP IN EACH SLEEPING ROOM, OUTSIDE EACH SLEEPING AREA, AND ON EACH STORY (INCLUDING BASEMENT). PROVIDE INTERCONNECTED CARBON MONOXIDE (CO) ALARMS OUTSIDE EACH SLEEPING AREA AND ON EVERY LEVEL. 4. GARAGE-TO-DWELLING FIRE SEPARATION (IRC R302.5 & R302.6): GARAGE WALLS ADJACENT TO DWELLING SHALL HAVE MIN. 1/2" GYPSUM BOARD; CEILINGS UNDER HABITABLE ROOMS SHALL HAVE MIN. 5/8" TYPE X GYPSUM BOARD SUPPORTED BY MIN. 1/2" GYPSUM ON SUPPORTING WALLS. DOOR BETWEEN GARAGE AND HOUSE SHALL BE 1-3/8" SOLID WOOD/STEEL OR 20-MIN FIRE-RATED WITH SELF-CLOSING, SELF-LATCHING DEVICE. NO HVAC DUCTS OR OPENINGS PERMITTED IN GARAGE. 5. STAIRWAYS, HANDRAILS & GUARDS (IRC R311.7 & R312.1): STAIR WIDTH MIN. 36"; HEADROOM MIN. 6'-8"; MAX. RISER 7-3/4"; MIN. TREAD 10" (W/ 3/4"–1-1/4" NOSING); MAX. VARIANCE 3/8". CONTINUOUS HANDRAIL 34"–38" ABOVE TREAD NOSING ON STAIRS WITH 4 OR MORE RISERS. GUARDS MIN. 36" HIGH WHERE DROP >30" WITH BALUSTERS REJECTING A 4" SPHERE (4-3/8" AT STAIR TRIANGLE). 6. MECHANICAL EXHAUST & ACCESS (IRC M1505 / R807 / R408): BATHROOMS WITHOUT REQUIRED OPERABLE WINDOW SHALL HAVE 50 CFM INTERMITTENT (20 CFM CONTINUOUS) EXHAUST FAN VENTED DIRECTLY TO EXTERIOR. ATTIC ACCESS MIN. 22" x 30"; CRAWLSPACE ACCESS MIN. 18" x 24".
B. Remodel / Addition / Deck Legend Note (Fixes Williams Ref #7, #13, #14)
REMODEL / ADDITION / DECK FLOOR PLAN LEGEND & NOTES: 1. EXISTING VS. NEW DESIGNATION: • (E) INDICATES EXISTING ROOMS, WALLS, WINDOWS, DOORS, AND HEADERS TO REMAIN. • (N) INDICATES NEW WORK, NEW WALLS, NEW DECK FRAMING, AND NEW WINDOWS/DOORS TO BE INSTALLED UNDER THIS PERMIT. 2. WINDOW & DOOR DIMENSIONS: ALL EXISTING AND NEW EXTERIOR DOORS AND WINDOWS ADJACENT TO THE WORK AREA ARE LABELED WITH WIDTH x HEIGHT DIMENSIONS (E.G., 3050 = 3'-0" x 5'-0"; 8080 SGD = 8'-0" x 8'-0" TEMPERED SLIDING GLASS DOOR). 3. HEADERS OVER NEW OR WIDENED OPENINGS (IRC R602.7): ALL NEW OR MODIFIED EXTERIOR WALL OPENINGS (INCLUDING NEW SLIDING GLASS DOORS) SHALL BE SUPPORTED BY HEADERS, KING STUDS, AND JACK/TRIMMER STUDS SIZED PER THE ATTACHED STRUCTURAL ENGINEERING CALCULATIONS. CONTRACTOR SHALL VERIFY EXISTING HEADER DIMENSIONS AND BEARING PRIOR TO DOOR INSTALLATION.