HomeMy WebLinkAbout183174_1_Corrections.docxRESIDENTIAL PLAN CHECK
COMMENTS
Planning & Building Agency
Building Safety Division
20 Civic Center Plaza
P.O. Box 1988 (M-19)
Santa Ana, CA 92702
(714) 647-5800
www.santa-ana.org
PLAN CHECK NO:
/ 900/901/902/903/904
PROJECT ADDRESS:
PLAN CHECK ENGINEER:TEL:714FAX:714
647-5897
TYPE OF CONSTRUCTION:
& IIIB
OCCUPANCY CLASSIFICATION(S):
, B & A-3
PLAN CHECK DATES:
REMARKS/RECHECK ITEMS:
APPLICATION
INITIAL REVIEW
EXPIRATION
RECHECKS:
1.
PROJECT APPLICANT CONTACT PERSON:
2.
3.
TEL:
FAX:
VALUATION:
EMAIL:
FLOOD ZONE:
Note: Numbers in parenthesis (unless otherwise noted) refer to code sections of the 2010 California Residential Code (CRC); 2010 California Building Code (CBC); CMC = 2010 California Mechanical Code; CPC = 2010 California Plumbing Code; CEC = 2010 California Electrical Code; T = Table; ICC = International Code Council.All items noted on this plan check report must be addressed. If you feel that an item is not applicable to your project, note “N/A” and discuss the reason with the plan checker.Please indicate the sheet number and detail to the right of each correction, or note the number on the plans where the correction is made. Resubmit marked original, calculations and this correction sheet. A separate sheet for response may be used.Resubmit corrected sets of plans.Meetings between the project applicant/designer and the plan reviewer shall be by appointment only. Please call (714) for an appointment. Provide a written report indicating where each correction is made by plan drawing number or plan detail number. If you feel that an item is not applicable to your project, note the reason why.
Please return marked up set of drawings with corrections.
CBC 1207,Sound Transmission Control, requires an acoustical analysis report, prepared under the supervision of a person experienced in the field of acoustical engineering, for all new hotels, motels, dormitories, apartment houses, and dwellings other than detached single-family dwellings. Submit two (2) copies of the acoustical analysis report.
The report shall show topographical relationship of noise sources and dwelling site, identification of noise sources and their characteristics, predicted noise spectra at the exterior of the proposed dwelling structure considering present and future land usage, basis for the prediction (measured or obtained from published data,) noise attenuation measures to be applied, and an analysis of the noise insulation effectiveness of the proposed construction showing that the prescribed interior noise level requirements are met. If interior allowable noise levels are met by requiring that windows be unopenable or closed, the design for the structure must also specify the means that will be employed to provide ventilation and cooling if necessary, to provide a habitable interior environment. Address outside air requirements (CBC Section 1203.4) and noise from plumbing.
107.3.4.2Deferred submittals.
The registered design professional in responsible charge shall list the deferred submittals on the construction documents for review by the building official.
Documents for deferred submittal items shall be submitted to the registered design professional in responsible charge who shall review them and forward the to the building official with a notation indicating that the deferred submittal documents have been reviewed and been found to be in general conformance to the design of the building. The deferred submittal items shall not be installed until the design and submittal documents have been approved by the building official.
This review does not include mechanical, plumbing, fire sprinkler system, or electrical work. Separate plans, applications, fees, plan checks, and permits are required for mechanical, plumbing, fire sprinkler systems, and electrical work. Call 647-5800 for information.
The applicant shall obtain clearances/approvals for the following prior to building permit issuance:
Planning Division approval on the corrected/final set of drawings (647-5804.) Previously approved plans should be submitted to expedite the process.
Orange County Fire Authority approval on the corrected/final sets of drawings (647-5839 or 647-5700.)
Police Department approval on the corrected/final set of drawings (647-5840.)
Public Works Agency approval (647-5039.)
Grading Permit. Application is made through the Building Safety Division (647-5800) and the plan review is by the Public Works Agency (647-5039.)
County of Orange Health Department approval on the corrected/final set of drawings (667-3600.)
School District Compliance Certificate; a copy of the building permit application, signed by the plan check engineer, shall be required by the School District to verify the scope of work. Refer to the attached handout.
State Division of Occupational Safety Permit (Cal/OSHA) (939-0145). A Cal/OSHA permit is required for:
Construction of trenches or excavations which are five feet or deeper and into which a person is required to descend.
The construction of any building, structure, false-work, or scaffolding more than three stories high or the equivalent height.
Proof of Worker’s Compensation Insurance shall be required at the time of permit issuance.
In addition to other fees, a “Park Acquisition And Development Fee” in the amount of $_________ shall be required pursuant to a resolution of the City Council for the Recreation And Community Services Agency; net addition of _________ bedroom(s).
Net addition of:
1 bedroom = $2,540.01
2 bedrooms = $3,384.38
3 bedrooms = $4,540.70
4 bedrooms = $5,027.82
5 bedrooms = $5,593.81
Note on Drawings: “UNDERGROUND UTILITIES SHALL BE REQUIRED FOR THIS PROJECT.”
Building address numbers shall be at least 4” high for single-family dwellings, 6” high for multi-family dwellings, and at least 10” high for commercial/non-residential buildings, in accordance with CBC Section 501.2 and the SAMC.
Occupancies storing, handling, using, and/or selling hazardous materials, liquids, and chemicals shall submit a list of all said materials, listing their quantities and how they relate to specific California Building Code Table items. Note on the Floor Plan, type and quantity of hazardous material in each control area and fire-resistive rating for fire barriers.
Shaft enclosure construction shall be detailed to show compliance with CBC Section 707.
Show location(s) of hard-wired smoke detector with a battery backup in each sleeping room and at a point centrally located in the corridor or area giving access to each sleeping area: a detector shall be located at each story, a detector shall be located in close proximity to the stairway when sleeping rooms are on the upper level. Where the ceiling height of a room open to the hallway serving the bedrooms exceeds that of the hallway by 24 inches or more, detectors shall be installed in the hallway and near the high point of the adjoining room.
1209.2. Show location of 22 x 30 inch attic access with 30-inch minimum headroom.
Posting of occupant load for building “E”. Every room or space that is assembly occupancy shall have the occupant load of the room or space posted in a conspicuous place, near the main exit or exit access doorway from the room or space. Posted signs shall be of an approved legible permanent design and shall be maintained by the owner or authorized agent.
ACCESSIBLE MEANS OF EGRESS
1007.2 Continuity and components. Each required accessible means of egress shall be continuous to a public way and shall consist of one or more of the following components:
Accessible routes complying with Chapter 11A, Sections 1110A.1 and 1120A, or Chapter 11B, Section 1114B.1.2, as applicable.
Exceptions:
Where the exit discharge is not accessible, an exterior area for assisted rescue must be provided in accordance with Section 1007.8.
Panic hardware shall comply with Section 1008.1.9. Panic hardware shall be provided as required by CBC Section(s):
An Occupancy with an occupant count > 50. Refer to CBC section 1008.1.8.3, Item 2 for Exception.
Electronic Egress Control Devices shall show compliance with CBC Section 1008.1.8.6.
Every required exit doorway shall be of a size as to permit the installation of a door not less than 3 feet in width and not less than 6 feet 8 inches in height. When installed, exit doors shall be capable of opening so that the clear width of the exit is not less than 32 inches.
Hand-activated door opening hardware shall be centered between 30 inches and 44 inches above the floor. Latching and locking doors that are hand activated and which are in a path of travel shall be operable with a single effort by lever-type hardware, by panic bars, push-pull activating bars, or other hardware designed to provide passage without requiring the ability to grasp the opening hardware. Locked exit doors shall operate as above in egress direction.
Note on the drawings: “Maximum effort to operate doors shall not exceed 5 pounds for exterior doors and interior doors, such pull or push effort being applied at right angles to hinged doors and at the center place of sliding or folding doors. Compensating devices or automatic door operators may be utilized to meet the above standards.
All building entrances that are accessible to and usable by persons with disabilities shall be identified with a least one standard sign and with an additional directional signs, as required, to be visible to persons along approaching pedestrian ways.
The requires means of egress from all parts of the building shall be provided with at least 1 foot-candle of light at floor level. Show compliance on the drawings.
Tactile exit signs shall be required at the following locations:
Each grade-level exterior exit door shall be identified by a tactile exit with the word “EXIT.”
Each exit door that leads directly to a grade-level exterior exit by means of a stairway or ramp shall be identified by a tactile exit sign with the following words as appropriate:
“EXIT STAIR DOWN”
NUMBER OF EXITS AND CONTINUITY
CBC Section 1021.1 Minimum number of exits. All rooms and spaces within each story shall be provided with and have access to the minimum number of approved independent exits required by Table 1021.1 based on the occupant load of the story, except as modified in Section 1021.2. The required number of exits from any story, basement or individual space shall be maintained until arrival at grade or the public way.
Minimum number of exits for occupant load:
TABLE 1019.1
MINIMUM NUMBER OF EXITS FOR OCCUPANT LOAD
OCCUPANT LOAD (persons per story)
MINIMUM NUMBER OF EXITS (per story)
1-500
2
501-1,000
3
More than 1,000
4
ASSEMBLY
CBC Section 1028.2 Assembly main exit.Group A occupancies that have an occupant load of greater than 300 shall be provided with a main exit. The main exit shall be of sufficient width to accommodate not less than one-half of the occupant load, but such width shall not be less than the total required width of all means of egress leading to the exit.
CBC Section 1028.2.Where the building is classified as a Group A occupancy, the main exit shall front on at least one street or an unoccupied space of not less than 20 feet in width that adjoins a street or public way.
EMERGENCY ESCAPE AND RESCUE
CBC Section 1029.1 General.In addition to the means of egress required by this chapter, provisions shall be made for emergency escape and rescue in Group R and I-1 occupancies. Sleeping rooms below the fourth story above grade plane shall have at least one exterior emergency escape and rescue opening in accordance with this section. Such openings shall open directly into a public way or to a yard or court that opens to a public way.
CBC Section 1029. In every sleeping room, below the fourth story, provide one openable escape window meeting all the following:
An openable area of not less than 5.7 square feet (5.0 for grade-floor openings);
A minimum 24-inch clear openable height;
A minimum clear openable width of 20 inches;
A sill height not over 44 inches above the floor.
CAUTION: Using minimum clear openable height with the clear openable width will yield only 3.3 square feet. Be especially careful with double-hung windows.
CBC Section 1029.4Operational constraints.Emergency escape and rescue openings and any exit doors shall be maintained free of any obstructions other than those allowed by this section and shall be operational from the inside of the room. Bars, grilles, grates or similar devices are permitted to be placed over emergency escape and rescue openings provided the minimum net clear opening size complies with Section 1029.2 and such devices shall be releasable or removable from the inside without the use of a key, tool, special knowledge or effort or force greater than that which is required for normal operation of the escape and rescue opening. Where such bars, grilles, grates or similar devices are installed, smoke alarms shall be installed in accordance with Section 907.2.10 The release mechanism shall be maintained operable at all times.
ACCESSIBLE ROUTES OF TRAVEL
CBC Section 1127.B.1. Site development shall be designed to provide access to all entrances and exterior ground-floor exits and access to normal paths of travel; and where necessary, to provide access shall incorporate pedestrian ramps, curb ramps, etc.
CBC Section 1127.B.1. When more than one building or facility is located on a site, accessible routes of travel shall be provided between buildings and accessible site facilities.
CBC Section 1127B.1. The accessible route of travel shall be the most practical direct route between accessible building entrances, accessible site facilities, and the accessible entrance to the site.
At every entrance and at every major junction along or leading to an accessible route of travel, there shall be a sign displaying the international symbol of accessibility. Signs shall indicate the direction to accessible building entrances and facilities and shall comply with the requirements found in CBC Sections 1117B.5 and 1127B.3.
Walks, sidewalks, and pedestrian ways shall be free of gratings whenever possible. For gratings located in the surface of any of these areas, grid openings in gratings shall be limited to ½ inch in the direction of traffic flow.
If a walk crosses or adjoins a vehicular way, and the walking surfaces are not separated by curbs, railings or other elements between the pedestrian areas and vehicular areas, the boundary between the areas shall be defined by a continuous detectable warning which is 36 inches wide, complying the CBC Section 1133B.8.5.
Detectable Warning Product Approval. Only approved Division of the State Architect, Access Compliance (DSA/AC) approved detectable warning products and directional surfaces shall be installed in accordance with CBC Section 1133B.8.5.
ACCESSIBLE PARKING
CBC Section 1129B.3, Item 4. Surface slopes of accessible parking spaces shall be the minimum possible and shall not exceed 1 unit vertical to 50 units horizontal (2% slope) in any direction.
Disabled accessible parking spaces should be sized as follows:
CBC Section 1129B.3, Item 1. Where single spaces are provided, they shall be a 9-foot wide parking area with an outlined 5-foot wide (8-foot wide for van accessible space) loading and unloading aisle ON THE PASSENGER SIDE OF THE VEHICLE. The minimum length of each parking space shall be 18 feet. The parking in front of building “E” shows 8’ 6” width of the stall VS. 9’ 0”. Please correct the plan.
Sanitary facilities serving the area of new work shall be disabled accessible.Please see the red marks on the plan for missing information. Revise the drawings to show compliance with CBC Section1115B.
LIGHT AND VENTILATION
Show/note ventilation requirements on the plans in accordance with the CBC and California Mechanical Code (CMC) requirements for each type of use.
Note on drawings:
“All enclosed portions of buildings customarily occupied by human beings shall be provided with natural ventilation by means of openable exterior openings readily controllable by building occupants, with an area not less than 4% of the floor area being ventilated.” CBC Section 1203 and 2007 California Mechanical Code Section 402.
Rooms containing bathtubs, showers, spas, and similar bathing fixtures shall be mechanically ventilated in accordance with the 2010 California Mechanical Code.
CBC Section 1203.2 Attic spaces. Enclosed attics and enclosed rafter spaces formed where ceilings are applied directly to the underside of roof framing members shall have cross ventilation for each separate space by ventilating openings protected against the entrance of rain and snow. Blocking and bridging shall be arranged so as not to interfere with the movement of air. A minimum of 1 inch of airspace shall be provided between the insulation and the roof sheathing. The net free ventilating area shall not be less than 1/150 of the area of the space ventilated, with 50 percent of the required ventilating area provided by ventilators located in the upper portion of the space to be ventilated at least 3 feet above eave or cornice vents with the balance of the required ventilation provided by eave or cornice vents.
Exception: The minimum required net free ventilating area shall be 1/300 of the area of the space ventilated, provided a vapor retarder having a transmission rate not exceeding 1 perm in accordance with ASTM E 96 is installed on the warm side of the attic insulation and provided 50 percent of the required ventilating area provided by ventilators located in the upper portion of the space to be ventilated at least 3 feet above eave or cornice vents, with the balance of the required ventilation provided by eave or cornice vents.
ENERGY CONSERVATION
This building is subject to the State of California Energy Conservation Regulations:The permit applicant shall be responsible for obtaining an energy plancheck from a consultant who is qualified to perform an energy efficiency analysis in accordance with the California Code of Regulations (CCR,) Title 24, Par 6, 2005 California Energy Code. The plancheck consultant must sign documentation certifying that a thorough, competent review has been performed on behalf of the Enforcement Agency.The corrected/final ARCHITECTURAL drawings shall have the required energy efficiency compliance documentation with completed signature blocks filed on the plans. The same information may be copied on the Electrical Plans for the Electrical Planchecker.The energy plancheck consultant must complete the attached “Energy Conservation Plancheck Consultant Qualification Statement.”
CBC Section 1204.1 Show how comfort heating facilities capable of maintaining a room temperature of 680F at a point of 3 feet above the floor in all habitable rooms.
On typical roof framing details and sections, show Radiant Barrier at roof as required by the California Energy Residential Manual for prescriptive and alternate Package D.
CBC Section 717.4 Draftstopping in attics.In combustible construction, draftstopping shall be installed to subdivide attic spaces and concealed roof spaces in the locations prescribed in Sections 717.4.2 and 717.4.3. Ventilation of concealed roof spaces shall be maintained in accordance with Section 1203.2.
CBC Section 717.4.1 Draftstopping materials.Materials utilized for draftstopping of attic spaces shall comply with Section 717.3.1.
CBC Section 717.4.1.1 Openings.Openings in thedraftstop partitions shall be protected by self-closing doors with automatic latches constructed as required for the partitions.
CBC Section 717.4.2 Groups R-1 and R-2.Draftstopping shall be provided in attics and concealed roof spaces of Group R-2 buildings with three or more dwelling units.Draftstopping shall be installed above, and in line with, sleeping unit and dwelling unit separation walls that do not extend to the underside of the roof sheathing above.
Exceptions:In occupancies in Group R-2 that do not exceed four stories in height, the attic space shall be subdivided by draftstops into areas not exceeding 3,000 square feet or above every two dwelling units, whichever is smaller.Draftstopping is not required in buildings equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.2, provided that automatic sprinklers are also installed in the combustible concealed spaces.
ROOF DRAINAGE
CBC Section 1503.4.Submit roof drainage calculations based on a 4” per hour rainfall in accordance with CBC Section 1611 and the 2010 California Plumbing Code (CPC) Chapter 11.
CPC Section 1101.11.2.2. Secondary roof drains having the same size as the roof drains shall be installed with the inlet flow line located 2 inches above the low point of the roof. Manufactured devices must be appropriately listed.
STRUCTURAL SYSTEMS
Provide structural calculations and drawings, stamped and signed by a California licensed architect or registered civil engineer for:
Light Standards
Block walls
SPECIAL INSPECTIONS AND STRUCTURAL TESTS
The engineer or architect in responsible charge of the structural design work shall include in the construction documents the following:
Structural tests and inspections required by CBC Chapter 17.
Inspection and observation program. When special inspection is required by Section 1704, the architect or engineer of record shall prepare an inspection program that shall be submitted to the building official for approval prior to issuance of the building permit. The inspection program shall designate the portions of the work that require special inspection and the name or names of the individuals or firms who are to perform the special inspections, and indicate the duties of the special inspectors.
CBC Section 1704.1.The special inspector shall be employed by the owner, the engineer, or architect of record, or an agent of the owner, but not the contractor or any other person responsible for the work.CBC Section 1710.When structural observation is required by Section 1710.2, the inspection program shall name the individuals or firms who are to perform structural observation and describe the stages of construction at which structural observation is to occur.
CBC Sections 106.3.4.1 and 1704.The structural engineer of record shall provide periodic and final inspections for all structural elements to ensure completed construction agrees with his/her design. Prior to the Building Safety Division’s final inspection, the structural engineer of record shall submit a letter to the Building Official certifying completed structural elements.
Other structural inspections required by the engineer or architect in responsible charge of the structural design work.Special inspections required by ICC Research Report.
CBC Section1704.1.1 Statement of special inspections. The permit applicant shall submit a statement of special inspections prepared by the registered design professional in responsible charge in accordance with Section 106.1, Appendix Chapter 1, as a condition for permit issuance. This statement shall be in accordance with Section 1705.
Exceptions:
[OSHPD 2] Not permitted by OSHPD. A statement of special inspections is not required for structures designed and constructed in accordance with the conventional construction provisions of Section 2308.
The statement of special inspections is permitted to be prepared by a qualified person approved by the building official for construction not designed by a registered design professional.
CBC Section1704.1.2 Report requirement. Special inspectors shall keep records of inspections. The special inspector shall furnish inspection reports to the building official, and to the registered design professional in responsible charge. Reports shall indicate that work inspected was done in conformance to approved construction documents. Discrepancies shall be brought to the immediate attention of the contractor for correction. If the discrepancies are not corrected, the discrepancies shall be brought to the attention of the building official and to the registered design professional in responsible charge prior to the completion of that phase of the work. A final report documenting required special inspections and correction of any discrepancies noted in the inspections shall be submitted at a point in time agreed upon by the permit applicant and the building official prior to the start of work.
STATEMENT OF SPECIAL INSPECTIONS
CBC Section 1705.1 General. Where special inspection or testing is required by Section 1704, 1707 or 1708, the registered design professional in responsible charge shall prepare a statement of special inspections in accordance with Section 1705 for submittal by the permit applicant (see Section 1704.1.1).
CBC Section 1705.2 Content of statement of special inspections. The statement of special inspections shall identify the following:
The materials, systems, components and work required to have special inspection or testing by the building official or by the registered design professional responsible for each portion of the work.
The type and extent of each special inspection.
The type and extent of each test.
Additional requirements for special inspection or testing for seismic or wind resistance as specified in Section 1705.3, 1705.4, 1707 or 1708.
For each type of special inspection, identification as to whether it will be continuous special inspection or periodic special inspection.
STRUCTURAL OBSERVATIONS
CBC Section 1709.1 General. Where required by the provisions of Section 1709.2 or 1709.3 the owner shall employ a registered design professional to perform structural observations as defined in Section 1702. At the conclusion of the work included in the permit, the structural observer shall submit to the building official a written statement that the site visits have been made and identify any reported deficiencies that, to the best of the structural observer’s knowledge, have not been resolved.
CBC Section 1709.2 Structural observations for seismic resistance. Structural observations shall be provided for those structures included in Seismic Design Category D, E or F, as determined in Section 1613, where one or more of the following conditions exist:
The structure is classified as Occupancy Category III or IV in accordance with Section 1604.5.
The height of the structure is greater than 75 feet above the base.
The structure is assigned to Seismic Design Category E, is classified as Occupancy Category I or II in accordance with Section 1604.5 and is greater than two stories in height.
When so designated by the registered design professional in responsible charge of the design.
When such observation is specifically required by the building official.
CBC Section 1709.3 Structural observations for wind requirements. Structural observations shall be provided for those structures sited where the basic wind speed exceeds 110 mph, determined from Figure 1609, where one or more of the following conditions exist:
The structure is classified as Occupancy Category III or IV in accordance with Table 1604.5.
The building height is greater than 75 feet.
When so designated by the registered design professional in responsible charge of the design.
When such observation is specifically required by the building official.
TRUSSES
CBC Section 2303.4.1 Design. Wood trusses shall be designed in accordance with the provisions of this code and accepted engineering practice. Members are permitted to be joined by nails, glue, bolts, timber connectors, metal connector plates or other approved framing devices.
CBC Section 2303.4.1.2 Truss design drawings. The written, graphic and pictorial depiction of each individual truss shall be provided to the building official and approved prior to installation. Truss design drawings shall also be provided with the shipment of trusses delivered to the job site. Truss design drawings shall include, at a minimum, the information specified below:
Slope or depth, span and spacing;
Location of joints;
Required bearing widths;
Design loads as applicable;
Top chord live load (including snow loads);
Top chord dead load;
Bottom chord live load;
Bottom chord dead load;
Concentrated loads and their points of application as applicable;
Controlling wind and earthquake loads as applicable;
Adjustments to lumber and metal connector plate design value for conditions of use;
Each reaction force and direction;
Metal connector plate type, size, thickness or gage, and the dimensioned location of each metal connector plate except where symmetrically located relative to the joint interface;
Lumber size, species and grade for each member;
Connection requirements for:Truss to truss;Truss ply to ply; andField splices.Calculated deflection ratio and maximum vertical and horizontal deflection for live and total load as applicable;Maximum axial tensile and compression forces in the truss members; andRequired permanent individual truss member bracing and method per Section 2303.4.1.5, unless a specific truss member permanent bracing plan for the roof or floor structural system is provided by a registered design professional.
Where required by one of the following, each individual truss design drawing shall bear the seal and signature of the truss designer:
Registered design professional; or
Building official; or
Statutes of the jurisdiction in which the project is to be constructed.
Exceptions:
When a cover sheet/truss index sheet combined into a single cover sheet is attached to the set of truss design drawings for the project, the single sheet/truss index sheet is the only document that needs to be signed and sealed within the truss submittal package.
When a cover sheet and a truss index sheet are separately provided and attached to the set of truss design drawings for the project, both the cover sheet and the truss index sheet are the only documents that need to be signed and sealed within the truss submittal package.
Exceptions 1 and 2 are not permitted by DSA-SS and OSHPD 1, 2 and 4.
CBC Section 2303.4.1.3 Truss placement diagram. The truss manufacturer shall provide a truss placement diagram that identifies the proposed location for each individually designated truss and references the corresponding truss design drawing. The truss placement diagram shall be provided as part of the truss submittal package, and with the shipment of trusses delivered to the job site. Truss placement diagrams shall not be required to bear the seal or signature of the truss designer.
Exception: When the truss placement diagram is prepared under the direct supervision of a registered design professional, it is required to be signed and sealed.
CBC Section 2303.4.1.4 Truss submittal package. The truss submittal package shall consist of each individual truss design drawing, the truss placement diagram for the project, the truss member permanent bracing specification and, as applicable, the cover sheet/truss index sheet.
PROTECTION AGAINST DECAY AND TERMITES
CBC Section 2304.11.1 General. Where required by this section, protection from decay and termites shall be provided by the use of naturally durable or preservative-treated wood.
CBC Section 2304.11.2 Wood used above ground. Wood used above ground in the locations specified in Sections 2304.11.2.1 through 2304.11.2.7, 2304.11.3 and 2304.11.5 shall be naturally durable wood or preservative-treated wood using water-borne preservatives, in accordance with AWPA U1 (Commodity Specifications A or F) for above-ground use.
CBC Section 2304.11.2.1 Joists, girders and subfloor. Where wood joists or the bottom of a wood structural floor without joists are closer than 18 inches, or wood girders are closer than 12 inches to the exposed ground in crawl spaces or unexcavated areas located within the perimeter of the building foundation, the floor assembly (including posts, girders, joists and subfloor) shall be of naturally durable or preservative-treated wood.
CBC Section 2304.11.2.2 Wood supported by exterior foundation walls. Wood framing members, including wood sheathing, that rest on exterior foundation walls and are less than 8 inches from exposed earth shall be of naturally durable or preservative-treated wood.ADDITIONAL COMMENTS