This information is provided free of charge by the Department of Industrial Relations from its web site at www.dir.ca.gov. These regulations are for the convenience of the user and no representation or warranty is made that the information is current or accurate. See full disclaimer at http://www.dir.ca.gov/od_pub/disclaimer.html.

Subchapter 4. Construction Safety Orders
Article 36. Fire Protection and Prevention

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§1938. Construction Site, General, Appendix B

Handy Construction Data; Facts; and Information Plate B-1 Handy Things to Know

1. TO FIND -

 (a) the circumference of a circle, multiply the diameter by 3.1416 (approx. 3 1/7). 


 (b) the diameter of a circle, multiply the circumference by .31831. 


 (c) the area of a circle, multiply the square of the diameter by .7854. 


 (d) the area of a triangle, multiply the base by 1/2 the perpendicular height. 


 (e) the volume of a sphere, multiply cube of the diameter by .5236. 


 A gallon of water weighs 8 1/2 pounds. 


 A gallon of water contains 231 cubic inches. 


 A cubic foot of water contains 7 1/2 gals., 1728 cubic inches and weighs 62 1/2 lbs. 


 In board measure all boards are assumed to be 1 inch thick. Area of a lineal foot multiplied by length in feet will give the surface contents in square feet. 


PLATE B-1-a SANITATION OF PERSONAL SAFETY DEVICES

(except respiratory protective equipment)

 Thorough scrubbing with soap and hot water is ordinarily adequate for cleaning purposes. When additional cleaning appears necessary, one of the following treatments should be used, in addition to the soap and water scrubbing: 


 (1) Immerse in boiling water for five (5) minutes. 


 (2) The method recommended by the manufacturer for cleaning and sterilizing. 


 After following any of these procedures, the equipment should be thoroughly rinsed with water and hung up to dry. 


 Such items that have been in contact with the skin of the wearer must be replaced if they cannot be cleaned as described. 


 Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code. 


 History 


1. Amendment of Plate B-1-a filed 1-17-80; effective thirtieth day thereafter (Register 80, No. 3).

2. Amendment of Plate B-1-a repealing paragraphs (1)-(2) and renumbering paragraphs filed 7-28-2006; operative 8-27-2006 (Register 2006, No. 30).

PLATE B-2 MEASURES

 
1 SQUARE MILE.....                  = 640 acres                 
                                = 6400 square chains            
1 ACRE............               = 10 square chains             
                                = 4840 square yards             
                                = 43,560 square feet            
                    = a square, each side of which is 208.7 feet
                                  = 16 square rods              
1 SQUARE CHAIN....               = 484 square yards             
                                 = 4356 square feet             
                                = 30.25 square yards            
1 SQUARE ROD......              = 272.25 square feet            
                                 = 625 square links             
1 SQUARE YARD.....                = 9 square feet               
1 SQUARE FOOT.....              = 144 square inches             
                                 = 0.1337 cu. feet              
1 U.S. GALLON.....                = 231 cu. inches              
                                     = 4 quarts                 
                                     = 8 pints                  
1 CUBIC FOOT......              = 7.48 U.S. Gallons             
 
 
PLATE B-3 WEIGHTS OF MATERIALS

 
 Approximate Weight                             
     Material           Per Cubic Foot -Lbs.    
     Aluminum                    166            
       Ashes                     43             
      Asphalt                    81             
       Brass                     524            
  Brick (common)     120 (about 3 tons per 1000)
   Brick (fire)                  145            
      Bronze                     534            
   Concrete 150        (4050 lbs. per cu. yd.)  
      Copper                     537            
   Crushed Rock      95 (2565 lbs. per cu. yd.) 
 Dry earth, loose    76 (2052 lbs. per cu. yd.) 
      Granite                    179            
   Iron, casting                 450            
       Lead                      708            
    Lumber, Fir        32 (2666 lbs. 1000 ft.)  
    Lumber, Oak        62 (5166 lbs. 1000 ft.)  
      Marble                     168            
      Mortar                     100            
   Port. Cement       94 (376 lbs. per barrel)  
    River Sand         120 (3240 lbs. cu. yd.)  
       Steel                     490            
        Tar                      63             
       Tile                      115            
       Water                    62.5            
     Zinc 437                                   
 
 
PLATE B-4 WEIGHTS OF METALS PER SQUARE FOOT

 
Thickness  Wrought   Cast                                               
 Inches     Iron     Iron    Steel   Copper   Tin     Zinc   Brass  Lead
                        Weights, Pounds per Square Foot                 
   1/16     2.50     2.34     2.55    2.89    2.41    2.28   2.63   3.7 
   1/8      5.00     4.69     5.10    5.79    4.81    4.55   5.26   7.4 
  3/16      7.50     7.03     7.65    8.68    7.22    6.83   7.89   11.1
   1/4      10.0     9.38     10.2    11.6    9.63    9.10   10.5   14.8
  5/16      12.50    11.7     12.8    14.5    12.0    11.4   13.2   18.5
   3/8      15.00    14.1     15.3    17.4    14.4    13.7   15.8   22.2
  7/16      17.50    16.4     17.9    20.3    16.8    15.9   18.4   25.9
  1/2 2     0.00     18.7     20.4    23.2    19.3    18.2   21.1   29.7
  9/16      22.50    21.1     23.0    26.0    21.7    20.5   23.7   23.4
   5/8      25.00    23.5     25.5    28.9    24.1    22.8   26.3   37.1
  11/16     27.50    25.8     28.1    31.8    26.5    25.0   28.9   40.8
   3/4      30.00    28.1     30.6    34.7    28.9    27.3   31.6   44.4
  13/16     32.50    30.5     33.2    37.6    31.3    29.6   34.2   48.2
   7/8      35.00    32.8     35.7    40.5    33.7    31.9   36.8   51.9
  15/16     37.50    35.2     38.3    43.4    36.1    34.1   39.5   55.6
    1       40.00    37.5     40.8    46.3    38.5    36.4   42.1   59.3
 
 
For rates in square inch, divide by 144.

PLATE B-5 WIND FORCE

Force of Wind in Pounds per Square Foot

 
              Force                    Force    
 Miles     per Square     Miles     per Square  
per Hour  Foot -in Lbs.  per Hour  Foot -in Lbs.
   1          0.005         20         1.969    
   2          0.020         25         3.075    
   3          0.044         30         4.429    
   4          0.079         35         6.027    
   5          0.123         40         7.873    
   6          0.177         45         9.963    
   7          0.241         50         12.30    
   8          0.315         55         14.9     
   9          0.400         60         17.71    
   10         0.492         65         20.85    
   12         0.708         70         24.1     
   14         0.964         75         27.7     
   15         1.107         80         31.49    
   16         1.25         100         49.2     
   18         1.55                              
 
 
PLATE B-6 RULE OF THUMB

(The following are not suggested as a substitute for accurate tables and reference material, but are sometimes useful in making a final safety check.)

Nails

Safe load lateral resistance in pounds equal eight (8) times the pennyweight.

1-6d nail = 8 x 6, or 48 pound

1-6d nail = 8 x 8, or 64 pounds

1-10d nail = 8 x 10, or 80 pounds

Manila Rope

Safe load in tons equals diameter in inches squared. Not accurate in sizes larger than one inch (1').

1' rope = 1 x 1, or 1 ton safe load

1/2' rope = 1/2 x 1/2, or 1/Ss4 ton safe load

For sisal rope, decrease safe loads by one-third

Plow-steel Cable

Safe load in tons is eight (8) times the diameter in inches squared.

1/2' rope = 1/2 x 1/2 = 1 /4 x 8 = 2 tons

Open Eye Hook

Safe load in tons is diameter of eye in inches squared.

2' hook, 2 x 2 = 4 tons

Shackle

Safe load in tons is diameter of pin in one-fourth inches (1/4') squared and divided by three (3).

1/2' diameter = 2 quarters

2 x 2 (/) 3 = 1 1/3 tons or 2,667 pounds

TABULAR OR GRAPHIC MATERIAL SET FORTH AT THIS POINT IS NOT DISPLAYABLE

Chains

Safe load in tons in six (6) times the square of the diameter of chain stock.

1/2' diameter chain stock

1/2 x 1/2 x 6 = 1 1/2 tons or 3,000 pounds

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. Amendment filed 3-19-79; effective thirtieth day thereafter (Register 79, No. 12).

PLATE B-7 DOUGLAS FIR "STRUCTURAL PLANKS" ESPECIALLY SUITED FOR SCAFFOLDS

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. Repealer filed 3-19-79; effective thirtieth day thereafter (Register 79, No. 12).

PLATE B-8 DOUGLAS FIR "SELECTED LUMBER" FOR ORDINARY SCAFFOLD PLANK SERVICE

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. Repealer filed 3-19-79; effective thirtieth day thereafter (Register 79, No. 12).

PLATE B-9

SQUARE COLUMNS -UNBRACED

ROUGH LUMBER -NOT SURFACED

Suggested Maximum Loads in Pounds - 1,000 Pounds per Square Inch Douglas Fir

 
-------------------------------------------------------------------------------
                               SIZE OF COLUMN CROSS SECTION                    
           --------------------------------------------------------------------
Lenght in     4'x4'        6'x6'     8'x8'   10'x10'  12'x12'  14'x14'  16'x16'
  Feet                                                                         
-------------------------------------------------------------------------------
    5        15,300       36,000     64,000  100,000  144,000  196,000  256.000
-------------------------------------------------------------------------------
    6        14,300       35,400     64,000  100,000  144,000  196,000  256,000
-------------------------------------------------------------------------------
    7        13,500       34,900     63,400  100,000  144,000  196,000  256,000
-------------------------------------------------------------------------------
    8        11,800       34,100     62,900  100,000  144,000  196,000  256,000
-------------------------------------------------------------------------------
    9         9,600       33,000     62,300  98,900   144,000  196,000  256,000
-------------------------------------------------------------------------------
   10         7,800       31,500     61,500  98,400   144,000  196,000  256,000
-------------------------------------------------------------------------------
   11         6,400       29,400     60,200  97,600   142,000  196,000  256,000
-------------------------------------------------------------------------------
   12         5,400       26,700     58,700  96,700   141,700  194,200  256,000
-------------------------------------------------------------------------------
   14         use a       20,100     54,300  93,800   139,600  192,800  258,700
-------------------------------------------------------------------------------
   16      larger size    15,400     47,400  89,400   136,600  190,700  251,900
                        -------------------------------------------------------
   18                      use a     38,400  83,100   132,200  187,300  249,300
                                     ------------------------------------------
   20                   larger size  31,100  74,200   126,100  183,000  246,000
-------------------------------------------------------------------------------
 
 
TABULAR OR GRAPHIC MATERIAL SET FORTH AT THIS POINT IS NOT DISPLAYABLE

History

1. Change without regulatory effect correcting error in Plate B-9 filed 5-28-91 pursuant to section 100, Title 1, California Code of Regulations (Register 91, No. 27).

PLATE B-10 SUGGESTED LOAD LIMITS FOR TIMBER BEAMS

Stress Grade Douglas Fir - 500 Pounds per Square Inch

(The loads given are for dressed beams which are slightly smaller than nominal sizes listed).




Image 1 (5" X 5") Not available for Offline Print to STP or FAX


PLATE B-11 STRENGTH OF U.S. STANDARD BOLTS FROM 1/4' TO 2' DIAMETER




Image 2 (3.25" X 7") Not available for Offline Print to STP or FAX

History

1. Editorial corrections of Diameter of Bolts second entry (Register 95, No. 21).

PLATE B-12 CALIFORNIA HIGHWAY PATROL STOPPING DISTANCE CHART

Note: Authority and reference cited: Section 142.3, Labor Code.

History

1. Repealer of Plate B-12 filed 4-27-79; effective thirtieth day thereafter (Register 79, No. 17).

PLATE B-13 MAXIMUM ALLOWABLE CONCENTRATIONS FOR MINERAL DUSTS

History

1. Repealer of Appendix Plate B-13 filed 10-18-77; effective thirtieth day thereafter (Register 77, No. 43).

PLATE B-13-a TABLE 1 -MINERAL DUSTS

History

1. Repealer of Appendix Plate B-13-a filed 10-18-77; effective thirtieth day thereafter (Register 77, No. 43).

PLATE B-14

TABLE 1

AMERICAN TABLE OF DISTANCES FOR STORAGE OF EXPLOSIVES MATERIALS

Note: Authority cited: Section 142.3, Labor Code, Reference: Section 142.3, Labor Code; and Section 12006, Health and Safety Code.

History

1. Repealer of New Plate B-14 filed 7-26-85; effective thirtieth day thereafter (Register 85, No. 30).

2. Repealer of New Plate B-14 filed 6-26-97; operative 7-26-97 (Register 97, No. 26).

Table 2

Table of Separation Distances of Ammonium Nitrate and Blasting Agents from
Explosives or Balsting Agents

 
-----------------------------------------------------------------------------
  Donor Weight         Minimum Separation Distance                           
                    of Acceptor when Barricaded (ft.)   Minimum Thickness of 
 Pounds    Pounds      Ammonium                         Artificial Barricades
   Over  Not Over       Nitrate        Blasting Agent           (in.)        
-----------------------------------------------------------------------------
              100          3                 11                  12          
    100       300          4                 14                  12          
    300       600          5                 18                  12          
    600     1,000          6                 22                  12          
  1,000     1,600          7                 25                  12          
-----------------------------------------------------------------------------
  1,600     2,000          8                 29                  12          
  2,000     3,000          9                 32                  15          
  3,000     4,000         10                 36                  15          
  4,000     6,000         11                 40                  15          
  6,000     8,000         12                 43                  20          
-----------------------------------------------------------------------------
  8,000    10,000         13                 47                  20          
 10,000    12,000         14                 50                  20          
 12,000    16,000         15                 54                  25          
 16,000    20,000         16                 58                  25          
 20,000    25,000         18                 65                  25          
-----------------------------------------------------------------------------
 25,000    30,000         19                 68                  30          
 30,000    35,000         20                 72                  30          
 35,000    40,000         21                 76                  30          
 40,000    45,000         22                 79                  35          
 45,000    50,000         23                 83                  35          
-----------------------------------------------------------------------------
 50,000    55,000         24                 86                  35          
 55,000    60,000         25                 90                  35          
 60,000    70,000         26                 94                  40          
 70,000    80,000         28                101                  40          
 80,000    90,000         30                108                  40          
-----------------------------------------------------------------------------
 90,000   100,000         32                115                  40          
100,000   120,000         34                122                  50          
120,000   140,000         37                133                  50          
140,000   160,000         40                144                  50          
160,000   180,000         44                158                  50          
-----------------------------------------------------------------------------
180,000   200,000         48                173                  50          
200,000   220,000         52                187                  60          
220,000   250,000         56                202                  60          
250,000   275,000         60                216                  60          
275,000   300,000         64                230                  60          
-----------------------------------------------------------------------------
 
 
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

PLATE B-14a Types of Storage Facilities

 
-------------------------------------------------------------------------------
                                            Classes of Explosive               
          Storage                         Materials, Which May Be              
           Type                                Stored Therein                  
-------------------------------------------------------------------------------
                                                Division 1.1                   
          Type 1                                Division 1.2                   
        (Permanent)                             Divison 1.3                    
                                                Division 1.4                   
                                                Division 1.5                   
-------------------------------------------------------------------------------
          Type 2                                Division 1.1                   
        (Portable)                              Divison 1.2                    
                                                Division 1.3                   
                                                Division 1.4                   
                                                Division 1.5                   
-------------------------------------------------------------------------------
                                                Division 1.1                   
          Type 3                                Division 1.2                   
      ("Day Box" for)                           Divison 1.3                    
    temporary storage)                          Division 1.4                   
                                                Division 1.5                   
-------------------------------------------------------------------------------
                                                Division 1.3                   
          Type 4                                Division 1.4                   
                                                Divison 1.5                    
                                        [FNa1]Electric Blasting Caps           
-------------------------------------------------------------------------------
          Type 5                                Divison 1.5                    
-------------------------------------------------------------------------------
[FNa1] As a result of tests with electric blasting caps, it has been determined
  that these blasting caps are not subject to sympathetic detonation.          
  Therefore, a Type 4 storage facility meets the necessary requirements for    
  storage of blasting caps that do not mass detonate.                          
 
 
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. New Plate B-14a filed 6-26-97; operative 7-26-97 (Register 97, No.26). For prior history, see Register 85, No. 30.

PLATE B-14-b

History

1. Repealer filed 7-26-85; effective thirtieth day thereafter (Register 85, No. 30).

PLATE B-14-c

History

1. Repealer filed 7-26-85; effective thirtieth day thereafter (Register 85, No. 30).

PLATE B-15

 
                                    Table 1                                    
                     Recommended Distances for Commercial                      
                           AM Broadcast Transmitters                           
                              0.535 to 1.605 MHz                               
        Transmitter Power [FN(1)]                    Minimum Distance          
                 (Watts)                                  (Feet)               
-------------------------------------------------------------------------------
               Up tp 4,000                                  800                
                  5,000                                     900                
                  10,000                                   1,300               
                  25,000                                   2,000               
               50,000 [FN2]                                2,900               
                 100,000                                   4,100               
                 500,000                                   9,100               
[FN(1)] Power delivered to antenna.                                            
[FN(2)] 50,000 watts is the present maximum power of U.S. broadcast            
  transmitters in this frequency range.                                        
 
 
 
                                    Table 2                                    
                 Recommended Distances for Transmitters up to                  
                  50 MHz (Excluding AM Broadcast) Calculated                   
              for a Specific Loop Pickup Configuration [FN(1)(2)]              
       Transmitter Power [FN(3)]                    Minimum Distance           
                (Watts)                                  (Feet)                
-------------------------------------------------------------------------------
                  100                                      800                 
                  500                                     1,700                
                 1,000                                    2,500                
                 5,000                                    5,500                
                 50,000                                  17,000                
             500,000 [FN4]                               55,000                
[FN(1)] Based on the configuration shown in Fig. 2b, using 20.8 MHz, which is  
  the most sensitive frequency.                                                
[FN(2)] This talbe should be applied to International Broadcast Transmitters in
  this 10-25 MHz range.                                                        
[FN(3)] Power delivered to antenna.                                            
[FN(4)] Present maximum for International Broadcast.                           
 
 
Table 3

Recommended Distances of Mobile Transmitters

Including Amateir and Citizens Band

MINIMUM DISTANCE (Feet)

 
                                          VHF            VHF           UHF     
                                      35 to 36 MHz   144 to 148    450 to 470  
                                       Public Use        MHz       MHz Public  
                                                       Amateur         Use     
  Transmitter       MF        HF      42 to 44 MHz    150.8 to      Cellular   
    [FN(1)]                            Public Use     161.6 MHz    Automobile  
     Power        1.6 to    28 to     50 to 54 MHz   Public Use     Telephone  
                   3.4       29.7       Amateur                     Above 800  
                   MHz       MHz                                       MHz     
    (Watts)      Industr-  Amateur                                             
                   ial                                                         
       5            30        70           60            20            10      
      10            40       100           80            30            20      
      50            90       230          180            70            40      
      180          120       320          260            100           60      
  180 [FN(2)]      170       430          350            130           80      
      250          200       500          410            160           90      
  500 [FN(3)]      280       710          280            220           120     
  600 [FN(4)]      300       780          640            240           140     
 1,000 [FN(5)]     400      1,010         820            310           180     
10,000 [FN(6)]    1,240     3,200        2,600           990           560     
 
 
 
             Citizens Band, Class D Transmitters, 26.96-27.41 MHz              
                                         Recommended Minimum Distance          
            Type                      Hand-Held             Vehicle-Mounted    
   Double sideband-4 watts                                                     
           maximum                                                             
      transmitter power                 5 ft.                   65 ft.         
Single Sideband-12 watts peak                                                  
    envelope power 20 ft.              110 ft.                                 
[FN(1)] Power delivered to antenna.                                            
[FN(2)] Maximum power for two-way mobile units in VHF (150.8 or 161.6 MHz      
  range) and for two-way mobile and fixed station units UHF (450 to 460 MHx    
  range).                                                                      
[FN(3)] Maximum power for major VHF two-way moblie and fixed station units in  
  35 to 44 MHz range.                                                          
[FN(4)] Maximum power for two-way fixed station units in VHF (150.8 to 161.6   
  MHz range).                                                                  
[FN(5)] Maximum power for amateur radio moblie units.                          
[FN(6)] Maximum power for some base stations in 42 to 44 MHz band and 1.6 to   
  1.8 MHz band.                                                                
 
 
 
                                 Table 4                                 
                    Recommended Distances for VHF TV                     
                    and FM Broadcasting Transmitters                     
Effective Radiated Power              Minimum Distance (Feet)            
     (Watts)        Channels 2 to 6       FM Radio       Channels 7 to 13
   Up to 1,000           1,000               800               600       
     10,000              1,800              1,400             1,000      
 100,000 [FN(1)]         3,200              2,600             1,900      
 316,000 [FN(2)]         4,300              3,400             2,500      
    1,000,000            5,800              4,600             3,300      
   10,000,000           10,200              8,100             5,900      
[FN(1)] Present maximum power channels 2 to 6 and FM-100,000 watts.      
[FN(2)] Present maximum power channels 7 to 13-316,000 watts.            
 
 
Table 5

 
           Recommended Distances from UHF TV Transitters           
    Effective Radiated Power               Minimum Distance        
             (Watts)                            (Feet)             
          Up to 10,000                           600               
            1,000,000                           2,000              
        5,000,000 [FN(1)]                       3,000              
           100,000,000                          6,000              
[FN(1)] Present maximum power channels 14 to 83--5,000,000 watts.  
 
 
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. Repealer of Plates B-15-a and B-15 filed 7-8-81; effective thirtieth day thereafter (Register 81, No. 30).

2. Amendment of NOTE filed 7-26-85; effictive thirtieth day thereafter (Register 85, No. 30).

3. Repealer and new Plate B-15 filed 6-26-97; operative 7-26-97 (Register 97, No. 26).

PLATE B-16

LADDERS




Image 3 (8.5" X 4") Not available for Offline Print to STP or FAX


Safe Procedure In Setting Up a Ladder

The base should be one-fourth the ladder length from the vertical plane of the top support

History

1. Amendment filed 5-21-75; effective thirtieth day thereafter (Register 75, No. 21).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-17

CRITERIA FOR STAIRS, LADDERS AND RAMPS OR INCLINES




Image 4 (7.5" X 7") Not available for Offline Print to STP or FAX


"Don't be the Fall Guy" (for stairs installed on or after April 3, 1997)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

1. Amendment filed 5-21-75; effective thirtieth day thereafter (Register 75, No. 21).

2. Amendment filed 12-4-2007; operative 1-3-2008 (Register 2007, No. 49).

3. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-18

LIGHT-TRADE POLE SCAFFOLD

For Scaffolds Over 20 Feet High Use 3' x 4' Uprights

For carpenters, lathers, shinglers, painters, plasters, sheet metal workers and
other trades not using heavy tools or storing heavy materials on the scaffold.




Image 5 (6.5" X 7") Not available for Offline Print to STP or FAX

Note: (1) Continous sills may be required on pavement or other surfaces that might cause slipping. When uprights are placed on the ground, they must rest on sills or foot blocks that are adequate to sustain the load.

(2) Ladders do not have to be placed as shown, but may be located at any suitable place on the scaffold that gives proper access to the platform or platforms.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. Repealer and new Plate B-18 filed 3-19-79; effective thirtieth day thereafter (Register 75, No. 21).

2. Amendment filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

3. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-19

HEAVY-TRADE POLE SCAFFOLD

For Scaffolds Over 20 Feet High Use 4' x 6' Uprights

For bricklayers, stone masons, stone cutters, concrete workers and other trades
using heavy tools or storing heavy materials on the scaffold.



Image 6 (6.5" X 7") Not available for Offline Print to STP or FAX

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. Repealer and new Plate B-19 filed 3-19-79; effective thirtieth day thereafter (Register 79, No. 12).

2. Amendment filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

3. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-20

WOODEN BRACKETS SCAFFOLD (Suggested)

(Can be Prefabricated for Attachment to Wall Forms at Various Postions, Or Can
be Made As a Permanent Part of Movable Form Panel)




Image 7 (6.75" X 5.25") Not available for Offline Print to STP or FAX

NOTE: (1) Maximum load is 25 psf.

(2) For railing and toeload requirments, see Article 16 and Section 1645.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. Amendment filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-21 METAL BRACKET SCAFFOLD (Suggested)

('WALER JACK')




Image 8 (6.75" X 7") Not available for Offline Print to STP or FAX

NOTE: Bracket shold not be usded on walers held by wire unless there are at least three such ties fairly close to each jack. Bolted walers are preferred where brackets are used.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. Amendment filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-22

LIMIT SPANS TO 7'6' (Suggested)

(FOR MULTIPLE SCAFFOLD USE AT LEAST 3' X 16' OUTRIGGERS)




Image 9 (6.25" X 7") Not available for Offline Print to STP or FAX

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. Amendment filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-23 BOATSWAIN'S CHAIR (Suggested)

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. Amendment of Plates B-18, B-19, B-20, B-21, B-22, and B-23 filed 11-14-75; effective thirtieth day thereafter (Register 75, No. 46).

2. Relocation and amendment of former Plate B-23 to Section 1662(j) filed 7-24- 87; operative 8-23-87 (Register 87, No. 33).

PLATE B-24

OUTRIGGER BEAM FOR SUSPENDED STAGING (Suggested)




Image 10 (4.25" X 7") Not available for Offline Print to STP or FAX

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. Renembering and ammendment of former Plate B-24 to Plater B-26 and renumbering and amendment of Plate B-23-a to Plate B-24 filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-24 ACCEPTABLE SCAFFOLDS (Suggested)

History

1. Renembering and ammendment of former Plate B-24 to Plater B-26 and renumbering and amendment of Plate B-23-a to Plate B-24 filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

PLATE B-24-a SUSPENDED LADDER SCAFFOLDS (Suggested)

History

1. Renembering and ammendment of Plate B-24 to Plater B-26 filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

PLATE B-25 SWING STAGE SHOWING CENTER SUPPORT

History

1. Renembering and ammendment of Plate B-24 to Plater B-26 filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

PLATE B-25-a

SAFE HITCHES AND KNOTS




Image 11 (8" X 7") Not available for Offline Print to STP or FAX

History

1. Renembering of Appendix Plate C-7 to B-25-a filed 2-19-75; effective thirtieht day thereafter (Register 75, No. 8).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-25-b

PAINTER'S HITCH




Image 12 (5.5" X 7") Not available for Offline Print to STP or FAX


STEPS IN MAKING A SAFE HITCH

1. Locate and prepare a place where load is to go.

2. Determine the weight of the load.

3. Determine the places where the hitching equipment is to be put on.

4. Decide on the type of hitch and hitching equipment which is necessary.

5. Decide on size of hitching equipment.

6. Put on hitch after checking condition of hitching equipment.

7. Take out hte slack and check the hitch.

8. Raise the load to a safe level and travel to the destination.

9. Lower the load near the landing area.

10. Adjust the blocking.

11. Set the load down onthe blocking.

12. Remove the hitching equipment.

13. Check the hitching equipment.

14. Return equipment to proper place.

History

1. Renembering of Appendix Plate C-8 to B-25-B filed 2-19-75; effective thirtieht day thereafter (Register 75, No. 8).

2. Change without regulatory effect amending step 1 in Plate B-25-b filed 5-28- 91 pursuant to section 110, title 1, California Code of Regulations (Register 91, No. 27).

3. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-26

ACCEPTABLE SCAFFOLDS (Suggested [FNa1])

SUSPENDED SCAFFOLD




Image 13 (3.5" X 7") Not available for Offline Print to STP or FAX


 [FNa1] See section 1658 for required railing protection 


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. Amendment of Plate B-26 filed 11-14-75; effective thirtieht day thereafter (Register 75, No. 46).

2. Renembering and ammendment of Plate B-26 to Plater B-29, and renumbering and amendment of former Plate B-24 to Plate B-26 filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

3. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-26-a

SUSPENDED LADDER SCAFFOLDS (Suggested) [FNa1]




Image 14 (3" X 7") Not available for Offline Print to STP or FAX


 [FNa1] See section 1658 for required railing protection 


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. Renembering and ammendment of Plate B-24-a to Plater B-26-a filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-27

MASON'S OUTRIGGER SCAFFOLDS (Suggested)




Image 15 (4" X 5.5") Not available for Offline Print to STP or FAX


PLATE B-27-a

WELDERS' PLAFTFORM CAGES (Suggested)




Image 16 (5.25" X 6.25") Not available for Offline Print to STP or FAX

History

1. Renembering and ammendment of Plate B-28 to Plater B-27-a, filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-28

SWING STAGE SHOWING CENTER SUPPORT ACCEPTABLE FOR RAILNG REINFORCEMENT
[FNa1]




Image 17 (6.25" X 6.25") Not available for Offline Print to STP or FAX


 [FNa1] See section 1658 for required railing protection 


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. Renembering and ammendment of former Plate B-28 to Plater B-27-a and renumbering and amendment of Plate B-25 to Plate B-28 filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-29

ACCEPTABLE MASONS' SUSPENDED SCAFFOLD

That Will Comply with Order No. 1659 Limit Plank Spans to 8' -0'




Image 18 (5.5" X 7") Not available for Offline Print to STP or FAX

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. Renembering and ammendment of former Plate B-29 to Plate B-31, and renumbering and amendment of Plate B-26 to Plate B-29 filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-29, B-29-a and B-29-b

History

1. Renembering of former Plates B-29 to Plate B-29-b to Plates B-31, B-31-a and B-31-b filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

PLATE B-30

Nails and Spikes.

 (1) Safe Lateral Strength. A common wire nail driven perpendicular to grain of the wood, when used to fasten wood members together, shall not be subjected to a greater load causing shear and bending than the safe lateral strength of the wire nail or spike as set forth in Plate B-30-a. 


 A wire nail driven parallel to the grain of the wood or toe nailed shall not be subjected to more than two-thirds of the lateral loade allowed when diven perpendicular to grain. 


PLATE B-30-a SAFE LATERAL STRENGTH AND REQUIRED PENETRATION OF COMMON WIRE
NAILS Driven Perpendicular to Grain of the Wood

 
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
                                           Loads (pounds)                      
                                           ------------------------------------
            Standard          Penetration  Douglas Fir                         
             length   Wire    required     or                                  
 Size of    (Inches)  gauge   (inches)     southern pine  Redwood   Other      
   nail                                                              species   
-------------------------------------------------------------------------------
    6d         2      11 1/2  1            70             58       As          
    8d       2 1/2    10 1/4  1 1/4        100            82       determined  
   10d         3      9       1 1/2        120            98       by the      
   12d       3 1/4    9       1 5/8        130            106      enforcing   
   16d       3 1/2    8       1 5/8        160            123      agency      
   20d         4      6       2            190            155                  
   30d       4 1/2    5       2 1/4        230            188                  
   40d         5      4       2 1/2        270            220                  
   50d       5 1/2    3       2 3/4        310            250                  
   60d         6      2       3            360            295                  
-------------------------------------------------------------------------------
 
 
 (2) Safe Resistance to Withdrawal. A wire nail driven perpendicular to grain of the wood shall not be subjected to a greater load, tending to cause withdrawal, than the safe resistance of the nail to withdrawal, as set forth in Plate B-30-b. 


 Nails driven parallel to grain of the wood shall not be allowed for resisting withdrawal forces. 


PLATE B-30-b SAFE RESISTANCE TO WITHDRAWAL OF COMMON WIRE NAILS

 Inserted Perpendicular to Grain of the Wood in Pounds per Linear Inch of Penetration into the Main Member 


 
----------------------------------------------------------------------------
        Kind of wood                           Size of nail                 
----------------------------------------------------------------------------
Douglas Fir or Southern Pine      6d 8d 10d 12d 16d 20d 30d 40d 50d 60d     
                              ----------------------------------------------
         or Redwood                   27 29 35 35 39 48 52 56 61 67         
       Other Species              As determined by the enforcing agency     
----------------------------------------------------------------------------
 
 
 (3) Spacing and Penetration. Common wire nails shall have peretration into the piece receiving the point as set forth in Plate B-30-a. Nails or spikes, for which the wire gauge or lengths are not specified in Plate B-30-a, shall have a required penetration of not less than nine and one-half diamenters, and allowable loads may be interpolated. 


 For wood to wood joints the spacing center-to-center shall be not less than the required penetration. 


 Edge and end distances shall be not less than one-half of the required penetration. 


 Holes for nails, where necessary to prevent splitting, shall be bored of a diameter smaller than that of the nails. 


PLATE B-31 BOLTS

 Safe loads in pounds for bolts in double shear and in seasoned lumber of the following species: cypress, southern; Douglar fir (coast and inland region); larch, western, pine, southern yellow; in joints consisting of three members in which the side members are one-half the thickness of the main member, shall not exceed values set forth in Plates B-31-a, -b. 


PLATE B-31-a HOLDING POWER OF BOLTS Loads Parallel to Grain (p)

 
-------------------------------------------------------------
 Length of               Diameter of bolt (inches)           
bolt in main  _______________________________________________
member [FN1]                                                 
  (inches)     1/2   5/8    3/4    7/8    1      1 1/8  1 1/4
-------------------------------------------------------------
   1 5/8       910   1,160  1,390  1,630  1,960              
   2 5/8      1,150  1,700  2,190  2,610  3,010              
   3 5/8      1,160  1,810  2,570  3,310  3,990              
   4 1/2      1,160  1,810  1,600  2,530  4,480  5,380       
   5 1/2        -    1,810  2,620  3,550  4,610  5,800       
   6 1/2        -    1,810  2,600  2,550  4,630  5,850       
   7 1/2        -    1,810  2,600  3,550  4,630  5,850       
   9 1/2        -    -      2,600  3,550  4,630  5,850  7,240
   11 1/2       -    -      -      -      4,630  5,850  7,240
-------------------------------------------------------------
 
 
 [FN1] This assumes dressed size lumber. Safe loads for other lengthsof bolt in main member may be obtained be interpolation. 


TABULAR OR GRAPHIC MATERIAL SET FORTH AT THIS POINT IS NOT DISPLAYABLE

PLATE B-31-b HOLDING POWER OF BOLTS Loads Perpendicular to Grain (p)

 
-------------------------------------------------------------------------------
  Length of                       Diameter of bolt (inches)                    
bolt in main   ________________________________________________________________
member [FN1]                                                                   
  (inches)      1/2    5/8       3/4       7/8       1          1 1/8     1 1/4
-------------------------------------------------------------------------------
    1 5/8       430    490       540       600       660                       
    2 5/8       700    790       880       970       1,050                     
    3 5/8       920    1,090     1,210     0,340     1,460                     
    4 1/2       920    1,300     1,510     1,660     1,810      1,970          
    5 1/2        -     1,800     1,750     2,020     2,210      2,410          
    6 1/2        -     1,250     1,750     2,260     2,590      2,860          
    7 1/2        -     1,170     1,890     2,250     2,820      3,250          
    9 1/2        -     -         1,520     2,120     2,760      3,450     4,130
   11 1/2        -     -         -         -         2,570      3,200     4,040
-------------------------------------------------------------------------------
[FN1] This assumes dressed size lumber. Safe loads for other lengths of bolt in
  main member may be obtained be interpolation.                                
 
 
TABULAR OR GRAPHIC MATERIAL SET FORTH AT THIS POINT IS NOT DISPLAYABLE

 History 


1. Renembering and amendment of Plates B-29, B-29-a and B-29-b to Plate B-31, B-31-a and B-31-b filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

PLATE B-32

(EXAMPLE)

BRICKLAYERS' SQUARE SCAFFOLD




Image 19 (5.25" X 7") Not available for Offline Print to STP or FAX

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. New Plate B-32 filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-33

PUMP JACK SCAFFOLD (EXAMPLE)




Image 20 (5.5" X 7") Not available for Offline Print to STP or FAX

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. New Plate B-33 filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-34

(EXAMPLE)

LADDER JACK SCAFFOLD




Image 21 (8.5" X 7") Not available for Offline Print to STP or FAX

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. New Plate B-34 filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-35

(EXAMPLE)

WINDOW JACK SCAFFOLD




Image 22 (5.5" X 7") Not available for Offline Print to STP or FAX

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. New Plate B-35 filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-36

(EXAMPLE)

STONE SETTERS' ADJUSTABLE MULTI-POINT SUSPENDED SCAFFOLD WITH MANUAL WINDING
DRUM HOIST




Image 23 (7.25" X 7") Not available for Offline Print to STP or FAX

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. New Plate B-36 filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-37

NEEDLE BEAM SCAFFOLD (EXAMPLE)

STRUCTURAL MEMBER ABOVE




Image 24 (4" X 7") Not available for Offline Print to STP or FAX

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. New Plate B-37 filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-38

FLOAT SCAFFOLD (EXAMPLE)




Image 25 (3" X 7") Not available for Offline Print to STP or FAX

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. New Plate B-38 filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-39

TWO-POINT SUSPENDED SCAFFOLD (Example)




Image 26 (8.5" X 5.75") Not available for Offline Print to STP or FAX

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. New Plate B-39 filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-40

PROHIBITED SCAFFOLD (Examples)




Image 27 (7.25" X 5.5") Not available for Offline Print to STP or FAX

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. Renumbering and amendment of former Plate C-20 to Plate B-40 filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-41

SUGGESTED SCAFFOLD HORSES (See Construction Safety Order 1674)




Image 28 (8.5" X 6.5") Not available for Offline Print to STP or FAX

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. Renumbering and amendment of former Plate C-21 to Plate B-41 filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

PLATE B-42

MULTI-LEVEL SUSPENDED SCAFFFOLD WITH POWER HOISTS




Image 29 (7.25" X 6.75") Not available for Offline Print to STP or FAX

NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

History

1. New Plate B42 filed 7-24-87; operative 8-23-87 (Register 87, No. 33).

2. Change without regulatory effect providing more legible illustrations filed 8-4-2008 pursuant to section 100, title 1, California Code of Regulations (Register 2008, No. 32).

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