2012 SUPPLEMENT TO THE FLORIDA BUILDING CODE, BUILDING

 

Chapter 1 - Scope and Administration

 

Add Item (k) to Section 102.2 as follows:

Section 102.2 Building.

The provisions of the Florida Building Code shall apply to the construction, erection, alteration, modification, repair, equipment, use and occupancy, location, maintenance, removal and demolition of every public and private building, structure or facility or floating residential structure, or any appurtenances connected or attached to such buildings, structures or facilities. Additions, alterations, repairs and changes of use or occupancy group in all buildings and structures shall comply with the provisions provided in Chapter 34 of this code. The following buildings, structures and facilities are exempt from the Florida Building Code as provided by law, and any further exemptions shall be as determined by the legislature and provided by law:

(a) – (j) [No change.]

(k) A building or structure having less than 1,000 square feet which is constructed and owned by a natural person for hunting and which is repaired or reconstructed to the same dimension and condition as existed on January 1, 2011, if the building or structure:

1. Is not rented or leased or used as a principal residence;

2. Is not located within the 100-year floodplain according to the Federal Emergency Management Agency’s current Flood Insurance Rate Map; and

3. Is not connected to an off-site electric power or water supply.

 

Chapter 2 – Definitions

Section 202 Definitions

 

Add definition of  “Bedroom”  as follows:

BEDROOM. A room that can be used for sleeping and that:

  1. For site-built dwellings has a minimum of 70 square feet of conditioned space;
  2. For manufactured homes is constructed according to the standards of the United States Department of Housing and Urban Development and has a minimum of 50 square feet of floor area;
  3. Is located along an exterior wall;
  4. Has a closet and a door or an entrance where a door could be reasonable installed; and
  5. Has an emergency means of escape and rescue opening to the outside in accordance with the Florida Building Code.

[As used in ss 381.0065 - 381.0067, Florida Statutes]

 

Chapter 4 – Special Detailed Requirements Based on Use and Occupancy

 

424.1 Public swimming pools and bathing places. Public swimming pools and bathing places shall comply with the design and construction standards of this section.

424.1.1 Flood hazard areas. [No change]

 

Change the definition of  “Department”  as follows:

“Department” means the jurisdictional building department Department of Health.

 [No change is proposed to other definitions]

 

Change jurisdiction from the Department of Health as follows:

424.1.2.1 Pool structure. Pools shall be constructed of concrete or other impervious and structurally rigid material. All pools shall be watertight, free from structural cracks and shall have a nontoxic smooth and slip-resistant finish. All materials shall be installed in accordance with manufacturer's specifications unless such specifications violate Chapter 64E-9, Florida Administrative Code, rule requirements or the approval criteria of NSF/ANSI Standard 50 or NSF/ANSI Standard 60.

(a) [No change.]

(b) One-inch (25 mm) square tile may be used if the licensed contractor provides a signed written certification to the approving jurisdictional building department engineer that the adhesive used on the one-inch (25 mm) square tile has a manufacturer's tested shear strength of at least 250 psi (1724 kPa) and the manufacturer has specified the adhesive for use underwater to adhere the type of tile used [vitreous (glass) or ceramic]. Tiles shall not have sharp edges exposed that could cause bather injury.

 

Add new Section 424.1.2.3.5 as follows:

424.1.2.3.5 Rules and regulations signage. Rules and regulations for bathers shall be posted in minimum 1 inch letters which must be legible from the pool deck, and shall contain the following:

1. No food or beverages in pool or on pool wet deck.

2. No glass or animals in the fenced pool area (or 50 feet from unfenced pool).

3. Bathing load: ___ persons.

4. Pool hours: __ a.m. to __ p.m.

5. Shower before entering.

6. Pools of 200 square feet in area or greater without an approved diving well configuration shall have  “NO DIVING”, in four inch letters included with the above listed pool rules.

7. Do not swallow the pool water.  This statement shall be added to signs at pools that conduct modifications as that term is defined.

 

Add new Section 424.1.2.3.5 as follows:

424.1.3.3 Safety.

424.1.3.3.1 All swimming pools shall be provided with a shepherd’ s hook securely attached to a one piece pole not less than 16 feet in length, and at least one 18 inch diameter lifesaving ring with sufficient rope attached to reach all parts of the pool from the pool deck. Safety equipment shall be mounted in a conspicuous place and be readily available for use. Pools greater than 50 feet in length shall have multiple units with at least one shepherd’ s hook and one lifesaving ring located along each of the longer sides of the pools. Spa pools under 200 square feet of surface area, and interactive water features or wading pools with two feet or less of water depth are exempt from this requirement.

424.1.3.3.2 All pools with a slope transition shall have a safety line as required by 424.1.10.1.3. The safety line shall be in place at all times unless a lifeguard or instructor is present.

424.1.3.3.3 Pool covers and solar blankets shall only be used during times when the pool is closed. Unless the pool cover or solar blanket is secured around the entire perimeter and is designed to support a live load of an adult person, the pool area shall be inaccessible to unauthorized individuals during times of cover or blanket use.

424.1.3.3.4 Chemicals shall be stored in a cool, dry, and well ventilated area under a roof and the area shall be inaccessible to the public. Chemicals which emit corrosive fumes shall not be stored in the equipment room. Empty chemical containers shall be stored and disposed of in such a manner that they are not accessible to the public.

424.1.3.3.5 Swimming pool slides shall be installed in accordance with manufacturer’s specifications and sound engineering practice. Pools with slides designed for swimming pools are not required to satisfy those of slide plunge pools in 424.1.9.2.1.

424.1.3.3.6 Floating and climb-on devices, objects or toys that are not a part of the approved pool design shall not be tethered in the pool or installed without engineering modification application and department’s approval.

 

Change jurisdiction from the Department of Health as follows:

 

424.1.4.2.3 Underwater lighting. Underwater lighting shall utilize transformers and low-voltage circuits with each underwater light being grounded. The maximum voltage for each light shall be 15 volts and the maximum incandescent lamp size shall be 300 watts. The location of the underwater lights shall be such that the underwater illumination is as uniform as possible and shall not be less than 18 inches (457 mm) below the normal operating water level determined by the center-line of the skimmer or top lip of the gutter. All underwater lights which depend upon submersion for safe operation shall have protection from overheating when not submerged. Underwater lighting requirements can be waived when the overhead lighting provides at least 15 footcandles (150 lux) of illumination at the pool water surface and pool wet deck surface. Alternative lighting systems which use 15 volts or less, or use no electricity in the pool or on the pool deck, such as LED (light emitting diode) fiber-optic systems, may be utilized if the applicant demonstrates to reasonable certainty that the system development has advanced to the point where the jurisdictional building department is convinced that the pool illumination is equal to the requirements in Sections 424.1.4.2.1 and 424.1.4.2.2 above.

 

 

Correct format of Table 424.1.6.1 as follows:

TABLE 424.1.6.1 PUBLIC SWIMMING POOL—REQUIRED FIXTURE COUNT

SIZE OF POOL

MEN'S RESTROOM

WOMEN'S RESTROOM

Urinals

WC

Lavatory

WC

Lavatory

0 - 2,500 sq. ft.

1

1

1

1

1

2,501 - 5,000 sq. ft.

2

1

1

5

1

5,001 - 7,500 sq. ft.

2

2

2

6

2

7,501 - 10,000 sq. ft.

3

2

3

8

3

For SI: 1 square foot = 0.0929 m2.

 

Change jurisdiction from the Department of Health as follows:

424.1.6.5.3.1 Perimeter overflow gutters. The lip of the gutter shall be uniformly level with a maximum tolerance of ¼ inch (6 mm) between the high and low areas. The bottom of the gutter shall be level or slope to the drains. The spacing between drains shall not exceed 10 feet (3048 mm) for 2-inch (51 mm) drains or 15 feet (4572 mm) for 2 ½-inch (64 mm) drains, unless hydraulically justified by the design engineer. Gutters may be eliminated along pool edges for no more than 15 feet (4572 mm) and this shall not exceed 10 percent of the perimeter (at least 90 percent of the perimeter shall be guttered). In areas where gutters are eliminated, handholds shall be provided within 9 inches (229 mm) of the water surface. Handhold design shall be approved by the jurisdictional building department prior to construction.

 

Correct filtration rate in Section 424.1.6.5.5.1 as follows:

424.1.6.5.5.1 Filter capacities. The maximum filtration rate in gallons per minute per square foot of filter area shall be: 15 [20 if so approved using the procedure stated in Section 424.1.6.5.1 for high rate sand filters, 3 for rapid sand filters, 0.075 0.375 for pleated cartridge filters and 2 for Diatomaceous Earth (D.E.) type filters].

 

Expand Section 424.1.6.5.10.2 to include successor standard as follows: 

424.1.6.5.10.2 Outlets shall be covered by a secured grating which requires the use of a tool to remove and whose open area is such that the maximum velocity of water passing through the openings does not exceed 11/2 feet per second (457 mm/s) at 100 percent of the design recirculation flow. Main drain covers/grates shall comply with the requirements of ASME/ANSI A112.19.8-2007, or any successor standard, and the water velocity of this section.                  

Correct cleaning system criteria in Section 424.1.6.5.12 as follows:

424.1.6.5.12 Cleaning system.  A portable or plumbed in vacuum cleaning system shall be provided. All vacuum pumps shall be equipped with hair and lint strainers. When the system is plumbed in, the vacuum fittings shall be located to allow cleaning the pool with a 50-foot (15240 mm) maximum length of hose. Vacuum fittings shall be mounted approximately 12 no more than 15 inches (305 381 mm) below the water level, flush with the pool walls, and shall be provided with a spring loaded safety cover or flush plug cover which shall be in place at all times when the pool is not being vacuumed. Bag-type cleaners, which operate as ejectors on potable water supply pressure, shall be protected by a vacuum breaker. Cleaning devices shall not be used while the pool is open to bathers.

 

Change jurisdiction from the Department of Health as follows:

424.1.6.5.14 Heaters. Pool heaters shall comply with nationally recognized standards acceptable to the jurisdictional building department and to the design engineer. Pools equipped with heaters shall have a fixed thermometer mounted in the pool recirculation line downstream from the heater outlet. Thermometers mounted on heater outlets do not meet this requirement. A sketch of any proposed heater installation including valves, thermometer, pipe sizes, and material specifications shall be included in the application for permit prior to installation. Piping and influent, effluent and bypass valves which allow isolation or removal of the heater from the system shall be provided. Materials used in solar and other heaters shall be nontoxic and acceptable for use with potable water. Heaters shall not prevent the attainment of the required turnover rate.

 

Delete exception to Section 424.1.6.5.16.3 as follows:

424.1.6.5.16.3 Feeders for PH adjustment. Feeders for PH adjustment shall be provided on all pools., except spa pools of less than 100 square feet (9 m2) of pool water surface area and pools utilizing erosion type chlorinators feeding chlorinated isocyanurates. PH adjustment feeders shall be positive displacement type, shall be adjustable from 0 to full range, and shall have an electrical interlock with the circulation pump to prevent discharge when the recirculation pump is not operating. When soda ash is used for PH adjustment, the maximum concentration of soda ash solution to be fed shall not exceed  ½ -pound (.2 kg) soda ash per gallon of water. Feeders for soda ash shall be capable of feeding a minimum of 3 gallons (11 L) of the above soda ash solution per pound of gas chlorination capacity. The minimum size of the solution reservoirs shall not be less than 50 percent of the maximum daily capacity of the feeder. The solution reservoirs shall be marked to indicate the type of contents.

 

Change jurisdiction from the Department of Health as follows:

424.1.6.5.16.6 Ultraviolet (UV) light disinfectant equipment may be used as supplemental water treatment on public pools (and additional treatment on IWF's) subject to the conditions of this paragraph and manufacturer's specifications. UV is encouraged to be used to eliminate or reduce chlorine-resistant pathogens, especially the protozoan Cryptosporidium.

1.         UV equipment and electrical components and wiring shall comply with the requirements of the National Electrical Code and the manufacturer shall provide a certification of conformance to the jurisdictional building department.

2. – 5. [No change]

 

Add new Section 424.1.6.5.17 as follows:

424.1.6.5.17 Water features such as waterfalls or fountains in pools may use up to 20% of the return water from the filter system, however all waters used in the feature shall not be counted toward attaining the designed turnover rate. Return piping system shall be designed and capable of handling the additional feature flow when the feature is turned off. Features that require more than 20% of the flow rate shall be supplied by an additional pump that drafts from a suitable collector tank. All water features that utilize water from the pool shall be designed to return the water to the pool. Spray features mounted in the pool deck shall be flush with the pool deck and shall be designed with the safety of the pool patron in mind.

 

Add new Section 424.1.6.5.18 as follows:

424.1.6.5.18 Chemical quality.  Chemicals used in controlling the quality of the pool water shall be tested and approved using the National Sanitation Foundation (NSF-ANSI) Standard 60-2005, Drinking Water Treatment Chemicals-Health Effects dated September, 2005, which is incorporated by reference and shall be compatible with other accepted chemicals used in pools. The following parameters shall be adhered to for pool water treatment:

1. pH – 7.2 to 7.8.

2. Disinfection – Free chlorine residual shall be 1 milligram per liter (mg/L) to 10 mg/L, inclusive, in conventional swimming pools and 2 mg/L to 10 mg/L, inclusive, in all other type pools such as spa-type pools and interactive water fountains; bromine residual shall be 1.5 mg/L to 10 mg/L, inclusive, in conventional swimming pools and 3 mg/L to 10 mg/L, inclusive, in all other type pools. Except that, the following maximum disinfectant levels shall apply to indoor conventional swimming pools: 5 mg/L free chlorine or 6 mg/L bromine.

3. When oxidation-reduction potential controllers are required, the water potential shall be kept between 700 and 850 millivolts. Use of these units does not negate the manual daily testing requirement of subsection 64E-9.004(13), F.A.C.

4. Cyanuric acid – 100 mg/L maximum in pools, with 40 mg/L as the recommended maximum, and 40 mg/L maximum in spa pools

5. Quaternary ammonium – 5 mg/L maximum

6. Copper – 1 mg/L maximum

7. Silver – 0.1 mg/L maximum

 

Change jurisdiction from the Department of Health as follows:

424.1.7.2 Depths. Wading pools shall have a maximum of 2 feet (610 mm). The depth at the perimeter of the pool shall be uniform and shall not exceed 12 inches (305 mm). However, where jurisdictional building department-approved zero depth entry designs are used, this uniform depth requirement must be met only on the remainder of the pool outside the zero depth entry portion. The pool floor shall not be more than 12 inches (305 mm) below the deck unless steps and handrails are provided. Depth and "NO DIVING" markers are not required on wading pools.

 

Correct lighting criteria in Section 424.1.7.8 as follows:

424.1.7.8 Lighting. Wading pools are exempt from underwater lighting requirements but shall have overhead lighting installed for night use. of 10 foot-candles if indoors or 6 foot-candles for outdoor night use. Such illumination shall be provided over the pool water surface and the pool deck surface.             

 

Add Section 424.1.7.9 as follows:

424.1.7.9 Automated Oxidation Reduction Potential (ORP) and pH controllers with sensing probes shall be provided to assist in maintaining proper disinfection and pH levels. 

               

Add Sections 424.1.8.12 – 424.1.8.15 as follows:

424.1.8.12 Automated Controllers. Automated Oxidation Reduction Potential (ORP) and pH controllers with sensing probes shall be provided on spa pools to assist in maintaining proper disinfection and pH levels.

424.1.8.13 In addition to the requirements of 424.1.2.3.5 spa pool signs shall include the following:

1. Maximum water temperature 104º F.

2. Children under twelve must have adult supervision.

3. Pregnant women, small children, people with health problems and people using alcohol, narcotics or other drugs that cause drowsiness should not use spa pools without first consulting a doctor.

4. Maximum use 15 minutes.

424.1.8.14 A clock shall be visible from the spa pool to assist the patron in meeting the requirement of 424.1.8.13 4. above.

424.1.8.15 If a spa is equipped with an emergency cut-off or kill switch, provisions for a minimum 80 decibel audible alarm near the spa to sound continuously until deactivated when such device is triggered shall be incorporated. This is to alert pool patrons and operators of a potential public health situation or to indicate that the spa filtration and treatment system may be off. The following additional rule sign shall be visible by the spa which reads “ALARM INDICATES SPA PUMPS OFF. DO NOT USE SPA WHEN ALARM SOUNDS UNTIL ADVISED OTHERWISE.”

Change jurisdiction from the Department of Health as follows:

424.1.9.2.1.3.1 The slide flume terminus shall be designed by the design engineer who can demonstrate to the jurisdictional building department's satisfaction that riders will be adequately slowed prior to discharge so as to prevent injury or harm to the rider upon impact with the plunge pool water. The slide terminus shall be flush with the pool wall and located at or below the pool water level.

Correct recirculation rate of Section 424.1.9.2.6.1 as follows:

424.1.9.2.6.1 Recirculation rate. The recirculation-filtration system of water slides shall recirculate and filter a water volume equal to the total water volume of the facility in a period of 32 hours or less.

Change jurisdiction from the Department of Health as follows:

424.1.9.3.1 Water activity pools shall be designed and constructed within the limits of sound engineering practice. The design engineer may consult with the jurisdictional building department prior to preparation and submission of engineering plans and specifications for water activity pools.

Add language from Ch. 64E-9.011(3)(g), FAC,  as follows: 

424.1.9.3.7 In addition to the requirements of 424.1.2.3.5, all water activity pool signs shall have the following added in one inch letters:

                Do not swallow the pool water, it is recirculated.

                Don not use pool if you are ill with diarrhea.

 

Change jurisdiction from the Department of Health as follows:

424.1.9.5.4 The maximum water depth of the river ride shall not exceed 3 feet (914 mm) unless justified to the jurisdictional building department's satisfaction by the design engineer.

Change jurisdiction from the Department of Health as follows:

424.1.9.8.2 An automatic skimmer system shall be provided in the collector tank. A variable height skimmer may be used or a custom surface skimmer device may be substituted if deemed appropriate by both the design engineer and the jurisdictional building department.

 

Add language from Ch. 64E-9.011(8)(c), FAC,  as follows: 

 

424.1.9.8.3  Chemical feeders shall be in accordance with Section 424.1.6.5; except that the disinfection feeder shall be capable of feeding 12 ppm of free chlorine to the filter return piping (based upon a hypothetical 30-minute turnover of the contained volume within the system). Automated Oxidation Reduction Potential (ORP) and pH controllers with sensing probes shall be provided to assist in maintaining proper disinfection and pH levels.

 

Add language from Ch. 64E-9.011(8)(j), FAC,  as follows: 

424.1.9.8.13 In addition to the requirements of 424.1.2.3.5, all IWF pool rule signs shall have the following added in one inch letters:

                Do not swallow the pool water, it is recirculated.

                Don not use pool if you are ill with diarrhea.

 

Chapter 7 - Fire and Smoke Protection Features

Correct code references in Sections709.1 as follows:

709.1 General. The following wall assemblies shall comply with this section.

1. Walls separating dwelling units in the same building as required by Section 4389.2.

2. Walls separating sleeping units in the same building as required by Section 4389.2.

3. – 6. [No change.]

 

Chapter 15 - Roof Assemblies and Rooftop Structures

 

Correct code reference in Sections 1501.1 as follows:

1501.1 Scope.  The provisions of this chapter shall govern the design, materials, construction and quality of roof assemblies, and rooftop structures.

Exception: Buildings and structures located within the high-velocity hurricane zone shall comply with the provisions of Section 1503.6 7 and Sections 1512 through 1525.

Chapter 16 – Structural Design

 

Correct titles to Figures 1609A, 1609B and 1609C as follows:

 

FIGURE 1609A ULTIMATE DESIGN WIND SPEEDS, Valtult FOR RISK CATEGORY II BUILDINGS AND OTHER STRUCTURES

FIGURE 1609B ULTIMATE DESIGN WIND SPEEDS, Valtult FOR RISK CATEGORY III AND IV BUILDINGS AND OTHER STRUCTURES

FIGURE 1609C ULTIMATE DESIGN WIND SPEEDS, Valtult FOR RISK CATEGORY I BUILDINGS AND OTHER STRUCTURES

 

In Section 1609.1.2.4, correct wind speeds in Sections 6.2.2.3 and 6.2.2.4 of ASTM E1996 as follows:

 

1609.1.2.4 Modifications to ASTM E 1996. Section 6.2.2 of ASTM E 1996 shall be modified as follows:

6.2.2 Unless otherwise specified, select the wind zone based on the basic wind speed as follows:

6.2.2.1 Wind Zone 1 - 130 mph ≤ basic wind speed < 140 mph, and Hawaii.

6.2.2.2 Wind Zone 2 - 140 mph ≤ basic wind speed < 150 mph at greater than 1.6 km (one mile) from the coastline. The coastline shall be measured from the mean high water mark.

6.2.2.3 Wind Zone 3 - 150 mph (58 m/s) ≤ basic wind speed < 160 170 mph (63 m/s), or 140 mph (54 m/s) ≤ basic wind speed ≤ 160 170 mph (63 m/s) and within 1.6 km (one mile) of the coastline. The coastline shall be measured from the mean high water mark.

6.2.2.4 Wind Zone 4-basic wind speed > 160 170 mph (63 m/s).

 

 

Correct code reference in Sections 1609.7 as follows

 

1609.7 Garage doors and rolling doors.
Pressures from Table 16049.7(1) for wind loading actions on garage doors and rolling doors for buildings designed as enclosed shall be permitted.

 

Add Section 1612.4.1 as follows:

 

1612.4.1  Modification to ASCE 24-05.  Table 6-1 and Section 6.2.1 in ASCE 24 shall be modified as follows:

1.      The title of Table 6.1 shall be “Minimum Elevation of Floodproofing, Relative to Base Flood Elevation (BFE) or Design Flood Elevation (DFE), in Coastal A Zones and in Other Flood Hazard Areas that are Not  – Outside of High Risk Flood Hazard Areas.”

2.      Section 6.2.1 shall be modified to permit dry floodproofing in Coastal A Zones, as follows:  “Dry floodproofing of nonresidential structures and nonresidential areas of mixed-use structures shall not be allowed unless such structures are located outside of High Risk Flood Hazard areas, and Coastal High Hazard Areas, and Coastal A Zones.  Dry floodproofing shall be permitted in Coastal A Zones provided wave loads and the potential for erosion and local scour are accounted for in the design. 

 

Chapter 23 - Wood

Revise Tables 2308.9.5, 2308.9.6, 2308.10.2(1), 2308.10.2(2), 2308.10.3(1), and 2308.10.3 (2) as follows:

TABLE 2308.9.5
HEADER AND GIRDER SPANSa,b FOR EXTERIOR BEARING WALLS
(Maximum Spans for Douglas Fir-Larch, Hem-Fir, Southern Pine and Spruce-Pine-Firb

and Required Number of Jack Studs)

(No change to body of table)

 

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 47.8 N/m2.

a.   Spans are given in feet and inches (ft-in).

b.   Tabulated values are for No. 2 grade lumber, except No.1 or better grade lumber shall be used for Southern Pine 2x4’s.

c.    Building width is measured perpendicular to the ridge. For widths between those shown, spans are permitted to be interpolated.

d.   NJ - Number of jack studs required to support each end. Where the number of required jack studs equals one, the header is permitted to be supported by an approved framing anchor attached to the full-height wall stud and to the header.

e.   Reserved

 

TABLE 2308.9.6

HEADER AND GIRDER SPANSa,b FOR INTERIOR BEARING WALLS
(Maximum Spans for Douglas Fir-Larch, Hem-Fir, Southern Pine and Spruce-Pine-Firb and

Required Number of Jack Studs)

(No change to body of table)

 

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm.

a.   Spans are given in feet and inches (ft-in).

b.   Tabulated values are for No. 2 grade lumber, except No.1 or better grade lumber shall be used for Southern Pine 2x4’s.

c.    Building width is measured perpendicular to the ridge. For widths between those shown, spans are permitted to be interpolated.

d.   NJ - Number of jack studs required to support each end. Where the number of required jack studs equals one, the headers are permitted to be supported by an approved framing anchor attached to the full-height wall stud and to the header.

TABLE 2308.10.2(1)
CEILING JOIST SPANS FOR COMMON LUMBER SPECIES
(Uninhabitable Attics Without Storage, Live Load = 10 pounds psf, L/
Ä = 240)

CEILING JOIST SPACING
(inches)

SPECIES AND GRADE

DEAD LOAD = 5 pounds per square foot

2 × 4                                2 × 6                     2 × 8                 2 × 10

Maximum ceiling joist spans

(ft. - in.)

(ft. - in.)

(ft. - in.)

(ft. - in.)

 

Douglas Fir-Larch              SS

13-2

20-8

Note a

Note a

 

Douglas Fir-Larch             #1

12-8

19-11

Note a

Note a

 

Douglas Fir-Larch             #2

12-5

19-6

25-8

Note a

 

Douglas Fir-Larch             #3

10-10

15-10

20-1

24-6

 

Hem-Fir                                SS

12-5

19-6

25-8

Note a

 

Hem-Fir                               #1

12-2

19-1

25-2

Note a

 

Hem-Fir                               #2

11-7

18-2

24-0

Note a

 

Hem-Fir                               #3

10-10

15-10

20-1

24-6

12

Southern Pine                   SS

12-11

20-3

Note a

Note a

 

 

Southern Pine                   #1

12-8

19-11

Note a

Note a

 

Southern Pine                   #2

12-5 11-10

19-6

25-8

Note a

 

Southern Pine                   #3

11-6 9-8

17-0

21-8

25-7

 

Spruce-Pine-Fir                 SS

12-2

19-1

25-2

Note a

 

Spruce-Pine-Fir                #1

11-10

18-8

24-7

Note a

 

Spruce-Pine-Fir                #2

11-10

18-8

24-7

Note a

 

Spruce-Pine-Fir                #3

10-10

15-10

20-1

24-6

 

Douglas Fir-Larch              SS

11-11

18-9

24-8

Note a

 

Douglas Fir-Larch             #1

11-6

18-1

23-10

Note a

 

Douglas Fir-Larch             #2

11-3

17-8

23-0

Note a

 

Douglas Fir-Larch             #3

9-5

13-9

17-5

21-3

 

Hem-Fir                                SS

11-3

17-8

23-4

Note a

 

Hem-Fir                               #1

11-0

17-4

22-10

Note a

 

Hem-Fir                               #2

10-6

16-6

21-9

Note a

 

Hem-Fir                               #3

9-5

13-9

17-5

21-3

16

Southern Pine                   SS

11-9

18-5

24-3

Note a

 

 

Southern Pine                   #1

11-6

18-1

23-1

Note a

 

Southern Pine                   #2

11-3 10-9

17-8

23-4

Note a

 

Southern Pine                   #3

10-0 8-5

14-9

18-9

22-2

 

Spruce-Pine-Fir                 SS

11-0

17-4

22-10

Note a

 

Spruce-Pine-Fir                #1

10-9

16-11

22-4

Note a

 

Spruce-Pine-Fir                #2

10-9

16-11

22-4

Note a

 

Spruce-Pine-Fir                #3

9-5

13-9

17-5

21-3

 

(continued)


TABLE 2308.10.2(1)—continued
CEILING JOIST SPANS FOR COMMON LUMBER SPECIES
(Uninhabitable Attics Without Storage, Live Load = 10 pounds psf, L/
Ä = 240)


Text Box: CEILING JOIST SPACING
(inches)	SPECIES AND GRADE	DEAD LOAD = 5 pounds per square foot
		2 × 4	2 × 6	2 × 8	2 × 10
		Maximum ceiling joist spans
		(ft. - in.)	(ft. - in.)	(ft. - in.)	(ft. - in.)
	Douglas Fir-Larch	SS	11-3	17-8	23-3	Note a
	Douglas Fir-Larch	#1	10-10	17-0	22-5	Note a
	Douglas Fir-Larch	#2	10-7	16-7	21-0	25-8
	Douglas Fir-Larch	#3	8-7	12-6	15-10	19-5
	Hem-Fir	SS	10-7	16-8	21-11	Note a
	Hem-Fir	#1	10-4	16-4	21-6	Note a
	Hem-Fir	#2	9-11	15-7	20-6	25-3
	Hem-Fir	#3	8-7	12-6	15-10	19-5
19.2					
	Southern Pine	SS	11-0	17-4	22-10	Note a
					
	Southern Pine	#1	10-10	17-0	22-5	Note a
	Southern Pine	#2	10-7 10-2	16-8	21-11	Note a
	Southern Pine	#3	9-1 7-8	13-6	17-2	20-3
	Spruce-Pine-Fir	SS	10-4	16-4	21-6	Note a
	Spruce-Pine-Fir	#1	10-2	15-11	21-0	25-8
	Spruce-Pine-Fir	#2	10-2	15-11	21-0	25-8
	Spruce-Pine-Fir	#3	8-7	12-6	15-10	19-5
	Douglas Fir-Larch	SS	10-5	16-4	21-7	Note a
	Douglas Fir-Larch	#1	10-0	15-9	20-1	24-6
	Douglas Fir-Larch	#2	9-10	14-10	18-9	22-11
	Douglas Fir-Larch	#3	7-8	11-2	14-2	17-4
	Hem-Fir	SS	9-10	15-6	20-5	Note a
	Hem-Fir	#1	9-8	15-2	19-7	23-11
	Hem-Fir	#2	9-2	14-5	18-6	22-7
	Hem-Fir	#3	7-8	11-2	14-2	17-4
24					
	Southern Pine	SS	10-3	16-1	21-2	Note a
					
	Southern Pine	#1	10-0	15-9	20-10	Note a
	Southern Pine	#2	9-10 9-1	15-6	20-1	23-11
	Southern Pine	#3	8-2 6-10	12-0	15-4	18-1
	Spruce-Pine-Fir	SS	9-8	15-2	19-11	25-5
	Spruce-Pine-Fir	#1	9-5	14-9	18-9	22-11
	Spruce-Pine-Fir	#2	9-5	14-9	18-9	22-11
	Spruce-Pine-Fir	#3	7-8	11-2	14-2	17-4


 


For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 47.8 N/m2.

a. Span exceeds 26 feet in length.  Check sources for availability of lumber in lengths greater than 20 feet.



TABLE 2308.10.2(2)
CEILING JOIST SPANS FOR COMMON LUMBER SPECIES
(Uninhabitable Attics With Limited Storage, Live Load = 20 pounds per square foot, L/
Ä = 240)


Text Box: CEILING JOIST SPACING
(inches)	SPECIES AND GRADE	DEAD LOAD = 10 pounds per square foot
		2 × 4	2 × 6	2 × 8	2 × 10
		Maximum ceiling joist spans
		(ft. - in.)	(ft. - in.)	(ft. - in.)	(ft. - in.)
	Douglas Fir-Larch	SS	10-5	16-4	21-7	Note a
	Douglas Fir-Larch	#1	10-0	15-9	20-1	24-6
	Douglas Fir-Larch	#2	9-10	14-10	18-9	22-11
	Douglas Fir-Larch	#3	7-8	11-2	14-2	17-4
	Hem-Fir	SS	9-10	15-6	20-5	Note a
	Hem-Fir	#1	9-8	15-2	19-7	23-11
	Hem-Fir	#2	9-2	14-5	18-6	22-7
	Hem-Fir	#3	7-8	11-2	14-2	17-4
12					
	Southern Pine	SS	10-3	16-1	21-2	Note a
					
	Southern Pine	#1	10-0	15-9	20-10	Note a
	Southern Pine	#2	9-10 9-1	15-6	20-1	23-11
	Southern Pine	#3	8-2 6-10	12-0	15-4	18-1
	Spruce-Pine-Fir	SS	9-8	15-2	19-11	25-5
	Spruce-Pine-Fir	#1	9-5	14-9	18-9	22-11
	Spruce-Pine-Fir	#2	9-5	14-9	18-9	22-11
	Spruce-Pine-Fir	#3	7-8	11-2	14-2	17-4
	Douglas Fir-Larch	SS	9-6	14-11	19-7	25-0
	Douglas Fir-Larch	#1	9-1	13-9	17-5	21-3
	Douglas Fir-Larch	#2	8-9	12-10	16-3	19-10
	Douglas Fir-Larch	#3	6-8	9-8	12-4	15-0
	Hem-Fir	SS	8-11	14-1	18-6	23-8
	Hem-Fir	#1	8-9	13-5	16-10	20-8
	Hem-Fir	#2	8-4	12-8	16-0	19-7
	Hem-Fir	#3	6-8	9-8	12-4	15-0
16					
	Southern Pine	SS	9-4	14-7	19-3	24-7
					
	Southern Pine	#1	9-1	14-4	18-11	23-1
	Southern Pine	#2	8-11 7-10	13-6	17-5	20-9
	Southern Pine	#3	7-1 5-11	10-5	13-3	15-8
	Spruce-Pine-Fir	SS	8-9	13-9	18-1	23-1
	Spruce-Pine-Fir	#1	8-7	12-10	16-3	19-10
	Spruce-Pine-Fir	#2	8-7	12-10	16-3	19-10
	Spruce-Pine-Fir	#3	6-8	9-8	12-4	15-0


 


(continued)


TABLE 2308.10.2(2)—continued
CEILING JOIST SPANS FOR COMMON LUMBER SPECIES
(Uninhabitable Attics With Limited Storage, Live Load = 20 pounds per square foot, L/
Ä = 240)

CEILING JOIST SPACING
(inches)

SPECIES AND GRADE

DEAD LOAD = 10 pounds per square foot

2 × 4

2 × 6

2 × 8

2 × 10

Maximum ceiling joist spans

(ft. - in.)

(ft. - in.)

(ft. - in.)

(ft. - in.)

 

Douglas Fir-Larch                SS

8-11

14-0

18-5

23-4

 

Douglas Fir-Larch                #1

8-7

12-6

15-10

19-5

 

Douglas Fir-Larch                #2

8-0

11-9

14-10

18-2

 

Douglas Fir-Larch                #3

6-1

8-10

11-3

13-8

 

Hem-Fir                                  SS

8-5

13-3

17-5

22-3

 

Hem-Fir                                  #1

8-3

12-3

15-6

18-11

 

Hem-Fir                                  #2

7-10

11-7

14-8

17-10

 

Hem-Fir                                  #3

6-1

8-10

11-3

13-8

19.2

 

 

 

 

 

Southern Pine                      SS

8-9

13-9

18-1

23-1

 

 

Southern Pine                     #1

8-7

13-6

17-9

21-1

 

Southern Pine                     #2

8-5 7-2

12-3

15-10

18-11

 

Southern Pine                     #3

6-5 5-5

9-6

12-1

14-4

 

Spruce-Pine-Fir                   SS

8-3

12-11

17-1

21-8

 

Spruce-Pine-Fir                   #1

8-0

11-9

14-10

18-2

 

Spruce-Pine-Fir                   #2

8-0

11-9

14-10

18-2

 

Spruce-Pine-Fir                   #3

6-1

8-10

11-3

13-8

 

Douglas Fir-Larch                SS

8-3

13-0

17-1

20-11

 

Douglas Fir-Larch                #1

7-8

11-2

14-2

17-4

 

Douglas Fir-Larch                #2

7-2

10-6

13-3

16-3

 

Douglas Fir-Larch                #3

5-5

7-11

10-0

12-3

 

Hem-Fir                                  SS

7-10

12-3

16-2

20-6

 

Hem-Fir                                  #1

7-6

10-11

13-10

16-11

 

Hem-Fir                                  #2

7-1

10-4

13-1

16-0

 

Hem-Fir                                  #3

5-5

7-11

10-0

12-3

24

 

 

 

 

 

Southern Pine                      SS

8-1

12-9

16-10

21-6

 

 

Southern Pine                     #1

8-0

12-6

15-10

18-10

 

Southern Pine                     #2

7-8 6-5

11-0

14-2

16-11

 

Southern Pine                     #3

5-9 4-10

8-6

10-10

12-10

 

Spruce-Pine-Fir                   SS

7-8

12-0

15-10

19-5

 

Spruce-Pine-Fir                   #1

7-2

10-6

13-3

16-3

 

Spruce-Pine-Fir                   #2

7-2

10-6

13-3

16-3

 

Spruce-Pine-Fir                   #3

5-5

7-11

10-0

12-3

 

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 47.8 N/m2.

a. Span exceeds 26 feet in length.  Check sources for availability of lumber in lengths greater than 20 feet.


 

TABLE 2308.10.3(1)
RAFTER SPANS FOR COMMON LUMBER SPECIES
(Roof Live Load = 20 pounds per square foot, Ceiling Not Attached to Rafters, L/
Ä = 180)

RAFTER
SPACING

(inches)

SPECIES AND GRADE

DEAD LOAD = 10 pounds per square foot

DEAD LOAD = 20 pounds per square foot

2 × 4

2 × 6

2 × 8

2 × 10

2 × 12

2 × 4

2 × 6

2 × 8

2 × 10

2 × 12

Maximum rafter spans

(ft. - in.)

(ft. - in.)

(ft. - in.)

(ft. - in.)

(ft. - in.)

(ft. - in.)

(ft. - in.)

(ft. - in.)

(ft. - in.)

(ft. - in.)

 

Douglas Fir-Larch       SS

11-6

18-0

23-9

Note a

Note a

11-6

18-0

23-5

Note a

Note a

 

Douglas Fir-Larch       #1

11-1

17-4

22-5

Note a

Note a

10-6

15-4

19-5

23-9

Note a

 

Douglas Fir-Larch       #2

10-10

16-7

21-0

25-8

Note a

9-10

14-4

18-2

22-3

25-9

 

Douglas Fir-Larch       #3

8-7

12-6

15-10

19-5

22-6

7-5

10-10

13-9

16-9

19-6

 

Hem-Fir                         SS

10-10

17-0

22-5

Note a

Note a

10-10

17-0

22-5

Note a

Note a

 

Hem-Fir                         #1

10-7

16-8

21-10

Note a

Note a

10-3

14-11

18-11

23-2

Note a

 

Hem-Fir                         #2

10-1

15-11

20-8

25-3

Note a

9-8

14-2

17-11

21-11

25-5

 

Hem-Fir                         #3

8-7

12-6

15-10

19-5

22-6

7-5

10-10

13-9

16-9

19-6

12

 

 

 

 

 

 

 

 

 

 

 

Southern Pine            SS

11-3

17-8

23-4

Note a

Note a

11-3

17-8

23-4

Note a

Note a

 

 

Southern Pine            #1

11-1

17-4

22-11

Note a

Note a

11-1

17-3

21-9

25-10

Note a

 

Southern Pine            #2

10-10 10-2

17-0

22-5

Note a

Note a

10-6 8-7

15-1

19-5

23-2

Note a

 

Southern Pine            #3

9-1 7-8

13-6

17-2

20-3

24-1

7-11 6-8

11-8

14-10

17-6

20-11