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<br />STRUCTURAL NOTES
<br />The following general structural notes apply unless noted otherwise (UNO)
<br />CODE: International Residential Code (IRC) 2018 ed.
<br />DESIGN LOADS:
<br />a. Roof snow load
<br />25 psf
<br />b. Floor live load:
<br />Living areas including private decks
<br />and balconies
<br />40 psf
<br />Uniform
<br />50 psf
<br />Concentrated
<br />2,000 lb on 30" square
<br />Public corridors
<br />100 psf
<br />Stairways
<br />100 psf
<br />Roof decks
<br />60 psf
<br />c. Lateral earth pressure (equivalent fluid pressure):
<br />i. Unrestrained, level backfill
<br />30 pcf (assumed)
<br />ii. Restrained, level backfill
<br />35 pcf (assumed)
<br />d. Allowable vertical soil bearing capacity
<br />2000 psf (assumed)
<br />e. Allowable lateral soil bearing capacity
<br />350 pcf
<br />f. Soil coefficient of friction
<br />0.40 (assumed)
<br />g. Seismic zone
<br />3
<br />h. Basic wind speed
<br />80 mph
<br />SAWN LUMBER: Structural lumber shall conform to and be graded
<br />and marked
<br />according to "WCLIB Grading and Dressing Rules," latest edition, and shall be as
<br />follows, UNO. Sizes specified are nominal sizes. All 2x and 4x
<br />structural lumber
<br />shall be marked "S-DRY".
<br />a. Light framing, including wall studs,
<br />plates and blocking. (2x4, 3x4)
<br />HF Std.
<br />b. 2x6 exterior wall studs and plates
<br />HF #2
<br />c. 4x4 posts
<br />DF-L Std.
<br />d. Posts (46 and deeper)
<br />DF-L #2
<br />e. Structural joist (2x6 and deeper)
<br />HF#2
<br />f. Structural joist, including beams and headers,
<br />(4x6 and deeper)
<br />DF-L#2
<br />g. Beams and columns (6x6 and larger)
<br />DF-L#1
<br />TIMBER CONNECTORS: Machine bolts shall be of ASTM A307 material.
<br />Provide std. cut washers @ each head & nut bearing on wood, min. 1 per bolt,
<br />UNO. Provide bolt holes 1/32"-1/16"> bolt dia. Connectors specified by letter &
<br />number shall be by Simpson Strong -Tie Co. Inc as specified in their catalog
<br />"Simpson Strong -Tie Connectors", 2004 ed. or approved equal, installed per
<br />manufacturer's recommendations. Use common or sinker nails, UNO. Install
<br />fasteners specified for connectors in all holes provided for them. Where
<br />connector straps connect 2 members, place 1/2 of fasteners in each member.
<br />PLYWOOD: Plywood panels shall conform to "US Product Std." for construction
<br />& industrial plywood, latest ed. & bear grade stamp of the APA. Plywood shall
<br />be as follows, UNO:
<br />a. Roof shthg.: 1/2" CDX, Exposure 1 (or 15/32" APA Rated Sheathing,
<br />32/16, Exposure 1)
<br />b. Subflooring: 5/8" CDX (or 19/32" APA Rated Sturd-I-Floor, 20 oc,
<br />Exposure 1) w/T & G edges.
<br />c. Deck Subflooring w/elastomeric coating:
<br />5/8" CDX (or 19/32" APA Rated Sturd-I-Floor, 20 OC,
<br />Exposure 1) w/T & G edges + 1/2" ACX (or 15/32" APA
<br />Underlayment, Exposurel )
<br />d. Wall Shthg.: 1/2" CDX (or 15/32" APA Rated Sheathing, 32/16,
<br />Exposure 1), UNO.
<br />NOTE: TECO rated TWA structural -use panels "Waferboard" may substitute for
<br />the above, per CABO Report No. NER-322, as follows:
<br />1. Roof sheathing: 1/2" sheathing, 24/0 (PSR), Exposure 1.
<br />2. Wall sheathing: 1/2" sheathing, 24/0 (PSR), Exposure 1.
<br />WOOD FRAMING NOTES: The following notes shall apply, UNO: (See also
<br />Framing Plans & Shear Wall Schedule)
<br />a. Nail all wood framing at least according to IRC Table No. R602.3(1). All nails
<br />shall be common, sinker or box.
<br />b. Provide full depth solid blkg. or rim joists and rafters at all supports.
<br />c. Connect joists and rafters to supports w/ 3-8d toe nail, or 2-16d face
<br />nails at rim joist if used. Use Simpson connectors when required by shear
<br />wall schedule.
<br />d. Toenail rim joists supporting joists and rafters to supports below w/8d nails
<br />at 6" o.c.
<br />e Support 2x, 2-2x and 4x joists at flush supports Simpson LUS series joist
<br />supports, 3-2x joists and 6x beams at flush supports w/ U series joist
<br />supports, using 10d common nails or 16d sinkers.
<br />f. Provide dbl. Joists under parallel bearing partitions, and all around floor and
<br />roof openings when span of header 4'. Provide U series joist hangers at
<br />flush supports.
<br />g. Connect multiple joist and rafter beams and headers w/16d face nails at 16"
<br />o.c., along each edge at each joist added to first joist, & toe nail each joist
<br />to supports w/ 2-16d nails at rim joists if used.
<br />h. Support multiple 2x joist and rafter beams with same number of 2x wall studs.
<br />i. Provide 2-2x studs at supports of all 4x and 6x beams and headers.
<br />j. Connect multiple stud posts w/ 16d face nails at 24" o.c., at each stud added
<br />to first stud.
<br />k. Provide post supports at all lower floor levels at least equal to that required
<br />to support each beam above.
<br />I. Provide full blkg. of at least same dim. for posts and columns through floors
<br />to supports below.
<br />m. Attach foundation and sill plates to foundations and foundation walls w/
<br />anchor bolts embedded min. 7" into conc., min 2 per plate piece and max.
<br />12" from end of each piece.
<br />o. Provide dbl. top plates on top of all ext., bearing and shear walls. Overlap at
<br />all wall corners and intersections. Offset end joints of upper to lower plates
<br />min. 4. Attach upper to lower plates w/ 16d common face nails at 16" o.c.,
<br />and w/8-16d common face nails at all laps and 2-16d at all intersections.
<br />p. Sole plate to joist or blocking 3-16d per 16".
<br />GENERAL: Contractor shall verify all dimensions and conditions before proceeding.
<br />Construction details not fully shown or noted on these drawings shall be sim. to
<br />details shown for sim. conditions. Do not scaledrawings, written dimensions take
<br />precedence over scaled dimensions. Contractor shall notify project designer of all
<br />discrepancies or omissions noted on these drawings and any variations needed in
<br />order to conform to required codes and regulations. Contractor shall design and
<br />provide adequate shoring and bracing of all structural members during construc-
<br />tion as required for protection of life and property.
<br />GLUED LAMINATED MEMBERS: Glued laminated members shall be
<br />fabricated according to AITC "Design Std. Specs. for Str. Glued Laminated
<br />Timber of Softwood Species" (AITC 117, latest ed.) Each member shall be
<br />industrial grade when concealed, and architectural grade when visible, UNO.
<br />Each member shall use waterproof glue throughout, be obtained from a certified
<br />fabricator, bear an AITC identification mark and be accompanied by an AITC
<br />certificate of performance. Provide Horiz. members, except "stock" members, w/
<br />camber of radius + 2,000 ft., UNO. Provide members when specified to be one -
<br />hour, fire -resistive per NER Report n. 250, w/ 1 outer tension lamination added,
<br />in place of 1 core lamination. Members shall bear the following combination
<br />symbols, UNO:
<br />Beams and girders:
<br />Simple supports 24F-V4
<br />All other cases. 24F-V3
<br />Posts 3
<br />Use of "stock" members over 12' in length not allowed without prior approval of
<br />project designer. Notches and holes shall not be placed in any member without
<br />the approval of project designer. Unloading, storage, handling and rection shall
<br />conform to AITC Std. No. 111-79. Preservative treatment, when specified, shall
<br />be pentachlorophenol, AWPA P-9 Type C, UNO. Retention and penetration shall
<br />conform to IRC Std. Provide treatment after gluing.
<br />TJI JOISTS: All TJI joist shall be fabricated by Trus Joist Macmillan. No
<br />substitute products shall be used without prior approval of the project designer.
<br />All residential series joists shall be designed, fabricated, shipped, stored and
<br />installed in accordance with the "Specifier's Guide to the FrameWorks Building
<br />System", (1994 or latest ed.) and in accordance with CABO Report No. NER-119.
<br />A copy of the standard details contained in the Specifier's Guide shall be kept on
<br />site during the framing of the structure. All workmen shall be familiar with the
<br />standard construction details included in the guide. Rim joists to be
<br />Timberstrand Laminated Strand Lumber designed and manufactured in
<br />accordance with ICBO Evaluation Report No. 4979. All commercial series joists
<br />and trusses including TJI, TJM, TJH, TJS, TJL, TJLX, and TJW shall be
<br />designed, fabricated, shipped, stored and installed in accordance with the "Trus
<br />Joist MacMillan Product Manual for Commercial Applications" (1993, or latest
<br />ed.) and CABO Report Nos. NER-119, NER-148 and NER-200.
<br />MICRO=LAM, PARALLAM BEAMS AND HEADERS: All MICRO=LAM LVL
<br />and Parallam PSL beams and headers shall be fabricated by Trus Joist
<br />MacMillan. No substitute products shall be used without the prior approval of the
<br />project designer. All beams and headers shall be designed, fabricated, shipped,
<br />stored and installed in accordance with the "Specifier's Guide to the FrameWorks
<br />Building System", (1994 or latest ed.) and in accordance with CABO Report Nos.
<br />NER-126 and NER-292.
<br />TREATED WOOD: All wood used for structural purposes in contact w/earth, or in
<br />contact w/conc. or masonry in direct contact w/earth, as well as all foundation
<br />sill plates, shall be pressure treated and shall bear the AWPB quality mark.
<br />In addition all wood used for structural purposes within 6" of earth and wood
<br />columns or posts in basements or exposed to weather or water splash, unless
<br />supported min. 1" above conc. floors by metal pedestals shall be pressure
<br />treated as specified above.
<br />CONCRETE:Concrete shall have a minimum specified compressive strength as shown
<br />in Table R402.2. Concrete subject to weathering as indicated in Table R301.2(1)
<br />shall be air entrained as specified in Table R402.2. The maximnum weight of fly
<br />ash, other pazzolans, silicafume or slag tha tis included in concrete mixture for
<br />garage floor slabs and for exterior porches, carport slabs,and steps that will be
<br />exposed to deicing chemicals shall not exceed the percentages of the total weight
<br />of cementitious materials specified in ACI 318. In addition to the cements
<br />permitted by ACI 318, cement complying with ASTM C1157 is permitted
<br />REINFORCING STEEL: All reinforcing steel shall be deformed bars conforming
<br />to ASTM Spec. A-615, and detailed according to ACI "Manual of Std. Practice for
<br />Detailing Reinforced Concrete Structures" (ACI 315, latest edition). Tie all
<br />reinforcing steel securely in place and or support in an approved manner. In
<br />walls, provide elbow bars to lap horiz. bars at corners and intersections. Lap all
<br />bars 30 bar dia. Bars shall be grade 40 unless noted otherwise.
<br />CONCRETE AND MASONRY FASTENERS: Conc. and masonry fasteners
<br />shall be installed according to manufacturer's instructions and the ICBO reports
<br />listed below. They shall be as follows, or approved equal, UNO.
<br />a. Concrete anchors: Hilti Kwik bolts, per ICBO Report No. 2156, or Kwik Bolt -
<br />II, per ICBO Report No. 4627.
<br />b. Welded head studs: Nelson Shear Connector studs per ICBO Report No. 2614
<br />c. Powder -actuated Fastners Hilti DN/NK Series Pins, per ICBO Report No. 2388
<br />d. Anchor bolts: ASTM A-307.
<br />Use standard cut washers w/all anchor bolts. Do not install concrete anchors or
<br />Powder -actuated fasteners until min. compressive strength (f' ) of concrete is c
<br />reached.
<br />STRUCTURAL STEEL: Design, fabrication and erection shall conform to AISC
<br />"Spec. for the Design, Fabrication and Erection of Str. Steel for Bldgs." latest ed.
<br />Materials shall be as follows:
<br />a. Str. steel ASTM A36
<br />b. Steel pipe ASTM A53, Grade B
<br />c. Str. tubing (cold formed) ASTM A500, Grade B
<br />d. Machine bolts ASTM A307
<br />Use std. cut washers w/all machine bolts, UNO.
<br />WELDING: Welding electrodes shall conform to Sec. 1.4.5 of the AISC Spec.
<br />Welded Str. Steel joints shall conform to AWS "Structural Welding
<br />Code" (AWS D1.1), latest edition for prequalified welded joints. Reinf. steel to be
<br />welded shall be Grade 40 and welded joints shall conform to UBC Std. No. 19-2.
<br />All welding shall be performed by WABO and AWS certified welders. Welds not
<br />specified shall be continuous 3/16" fillet welds using E70XX electrodes.
<br />BUILDING BRICK UNITS: Bldg brick shall conform to UBC Std. No. 21-1 and
<br />be Grade MW. Lay all units in running bond. Grout cavity between courses in
<br />multi-wythe walls solid.
<br />MORTAR: Mortar shall be Type S conforming to UBC Std. No. 21-14 and have
<br />assumed f' _ V00 psi at 28 days. Mortar proportions by volume shall conform
<br />to UBC . Measure aggregrate in a damp, loose condition.
<br />BUILDING CODE NOTES
<br />1. Every bedroom shall have at least one operable window or exterior door
<br />approved for emergency escape or rescue. Windows shall have a minimum
<br />net clear opening of 5.7 square feet. The minimum net clear opening height
<br />dimension shall be 24", the minimum net clear opening width dimension
<br />shall be 20". Egress windows shall have a maximum sill height of 44"
<br />above the floor.
<br />2. Shower walls and bathtub walls with shower heads, to be watertight to
<br />height of 72" above drain inlet. GWB used to be water-resistant gypsum
<br />backing board.
<br />3. Kitchen range exhaust hoods shall be exhausted directly to the outside,
<br />using metal ductwork, with smooth interior surfaces.
<br />4. The net free ventilating area of enclosed rafter or attic spaces shall not be
<br />less than 1/150 of the area of each space to be ventilated, except that the
<br />area may be 1/300, provided that 50%(min.) 80% (max) of the required ventilating
<br />areas located at least 3 feet above eave vents. The opening shall be covered
<br />with corrosion -resistant metal mesh with mesh openings 1/4" in dia.
<br />5. All attic spaces with 30" or more vertical height shall be provided with an
<br />access opening 22"x30". The opening shall be located in a corridor,
<br />hallway or other readily accessible location and have at least 30"
<br />headroom.
<br />6. Doors between the garage and residence shall be self closing, tight fitting,
<br />solid core solid wood door 1-3/8" in thickness or a self closing tight fitting,
<br />door having a fire protection rating of not less than 20 minutes.
<br />7. Usable space under stairs shall have walls and soffits (on the enclosed
<br />side) protected as required for 1-hour fire resistive constructrion.
<br />8. Fire block stairs between stair stringers at top and bottom and along run
<br />between studs.
<br />9. Stairway requirements, UNO. See floor plans.
<br />a. Min. width = 36"
<br />b. Min. tread run = 10"
<br />C. Min. riser = 4", max. riser = 7-3/4"
<br />d. Min. headroom = 6'-8"
<br />10. Handrails to have ends returned and placed minimum 34:, max. 38" above
<br />tread nosing.andrail to be easily graspable and 1-1/4" to 2" cross-section
<br />area. Handrails (trim and other decorative features) may project into the
<br />required stair width up to 3-1/2" each side. Handrails shall extend at
<br />least 1-1/2" from wall.
<br />11. Exterior and Interior guards to be min. 36" above finished floor when
<br />more than 30" above adjacent floor or grade. Provide max. 4" dia. clear
<br />space between intermediate rails.
<br />12. A smoke alarm shall be installed in each sleeping room and at a point
<br />centrally located in the corridor of area giving access to each separate
<br />sleeping area. A smoke alarm shall be installed on each story and
<br />basement in close proximity to the stairway.
<br />13. All required smoke alarms shall take their power from the building wiring
<br />and be equipped with a battery backup. The alarm shall emit a signal
<br />when the batteries are low. All smoke alarms shall comply with Sec.
<br />R314 IRC
<br />14. Safety glazing whether wired, tempered or laminated glass to meet IBC
<br />standard 24-2 and glazing requirements of IRC Sec. R308. Provide safety
<br />glazing at the following locations:
<br />a. Glazing in ingress and egress doors.
<br />b. Glazing in fixed and sliding panels of sliding doors except wardrobe
<br />doors.
<br />C. Glazing in shower and bathtub doors and enclosures.
<br />d. Glazing in storm doors and unframed swinging doors.
<br />15. Glass skylights to be min. 7/32" thick and one of the following materials:
<br />a. Laminated glass with approved interlayer min. 0.03" thick.
<br />b. Wired glass
<br />C. Tempered glass.
<br />16. Plastic used in skylights to meet requirements of UBC Standard No. 26-7
<br />and bear the required label. The edges of each light or dome to be
<br />protected by metal or approved equal. Use CC2 materials, UNO.
<br />17. Recessed lighting installed in the building envelope shall conform to the
<br />WA State Energy Code and shall be one of the
<br />following:
<br />a.Type IC rated, manufactured with no penetrations between the side of
<br />the recessed fixture and the ceiling cavity, and sealed to prevent air
<br />leakage into the unconditioned space.
<br />b.Type IC or non -IC rated, installed inside a sealed enclosure
<br />constructed from a minimum 1/2" GWB or other air tight assembly
<br />manufactured for this purpose, while maintaining clearance of min.
<br />1/2" from combustibles and min. 3" from insulation.
<br />c.Type IC rated, certified under ASTA 283 to have no more than 2.0
<br />CFM air movement from the conditioned space to the ceiling cavity.
<br />18. Duct systems shall be of metal per Table 10-A, 10-B and 10-C or
<br />factory made ducts complying with Standard No. 10-1 UMC.
<br />19. Joints and seams in ducts shall be substantially airtight. Installation
<br />shall comply with the IMC
<br />20. Solid fuel -burning appliances including airtight stoves, fireplace stoves,
<br />room heaters/fireplace stoves, factory built fireplaces and fireplace
<br />inserts shall be approved, shall bear the label of the listing agency and
<br />shall comply with the provisions of the IMC
<br />21. All solid fuel -burning appliances shall be provided with tight fitting glass
<br />or metal doors.
<br />22. All solid fuel -burning appliances shall have an outside source of com-
<br />bustion air directly connected to the fire box. The duct shall be a min.
<br />of 6 square inches and shall be provided with an operable damper.
<br />23. Fireplaces shall be provided with tightly fitting flue dampers readily
<br />accessible manual or approved automatic control. There shall be an
<br />outside source of combustion air ducted directly into the firebox. The
<br />duct shall be a minimum of 6 square inches.
<br />24. Every appliance designed to be vented shall comply with Sec.901, 902
<br />and Tables 9-A and 9-B, UMC.
<br />25. Every factory built chimney, Type L vent, Type B gas vent, or Type BW
<br />gas vent shall be installed in accordance with the manufacturer's
<br />instructions and applicable provisions of Chapter 9 IMC.
<br />26. A Type B or BW gas vent shall terminate not less than 1 foot above the
<br />roof through which it passes nor less than 4' from any portion of the
<br />building which extends at an angle of more than 45 degrees upward
<br />from the horizontal not less than shown in Figure 1, Sec. 906(d) UMC.
<br />27. A Type L vent shall terminate not less than 2' above the roof through
<br />which it passesnor less than 4' from any portion of the building extends
<br />at an angle of more than 45 degrees upward.
<br />110 vo�f
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<br />R314.2 Location.
<br />Smoke alarms shall be installed in the following locations:
<br />1. In each sleeping room.
<br />2. Outside each separate sleeping area in the immediate vicinity of the
<br />bedrooms.
<br />3. On each additional story of the dwelling, including basements but not
<br />including crawl spaces and uninhabitable attics. In dwellings or dwelling units
<br />with split levels and without an intervening door between the adjacent levels,
<br />a smoke alarm installed on the upper level shall suffice for the adjacent lower
<br />level provided that the lower level is less than one full story below the upper
<br />level.
<br />When more than one smoke alarm is required to be installed within an
<br />individual dwelling unit the alarm devices shall be interconnected in such a
<br />manner that the actuation of one alarm will activate all of the alarms in the
<br />individual unit.
<br />R314.2.1 Alterations, repairs and additions.
<br />When alterations, repairs or additions requiring a permit occur,
<br />or when one or more sleeping rooms are added or created in
<br />existing dwellings, the individual dwelling unit shall be equipped
<br />with smoke alarms located as required for new dwellings; the
<br />smoke alarms shall be interconnected and hard wired.
<br />Exceptions:
<br />1. Inter connection and hard -wiring of smoke alarms in existing
<br />areas shall not be required where the alterations or repairs do
<br />not result in the removal of interior wall or ceiling finishes
<br />exposing the structure, unless there is an attic, crawl space or
<br />basement available which could provide access for hard wiring
<br />and interconnection without the removal of interior finishes.
<br />2. Work involving the exterior surfaces of dwellings, such as
<br />the replacement of roofing or siding, or the addition or
<br />replacement of windows or doors, or the addition of a porch
<br />or deck, are exempt from the requirements of this section.
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<br />DRN BY: J. H E I L M A N
<br />DATE: MAY 2022
<br />FILENAME: 22-05-02
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