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All wood pole scaffolds 40 feet (12 192 mm) high or less shall be constructed in accordance with the minimum nominal sizes and maximum spacings shown in Tables 3314.12.1 (1) through 3314.12.1 (6). Wood pole scaffolds more than 40 feet (12 192 mm) high shall be designed in accordance with Section 3314.3.

TABLE 3314.12.1(1)
MINIMUM SIZE AND MAXIMUM SPACING OF MEMBERS OF SINGLE WOOD POLE LIGHT DUTY SCAFFOLDS
UNIFORMLY DISTRIBUTED LOAD
NOT TO EXCEED 25 psf
Max. height of scaffold (ft) 20' 40' 60' 75'
Poles or uprights (min) 2" × 4" 3" × 4" 4" × 4" Top 60'
4" × 4"
Lower Sect.
4" × 6"
Pole foundation (min)     2" × 9"    
Max. pole spacing (longitudinal)     10'-0"    
Max. width of scaffold     5'-0"    
Bearers or putlogs (min)     3" × 4"or 2" × 6"(on edge)    
Ledgers (minimum)  
With 6'-0" pole space
    1" × 6"(on edge)    
With 10'-0" pole space
    11/4" × 9"(on edge)    
Vertical spacing of ledgers (max)     7'-0"    
Nonsupporting stringers     1" × 4"    
Tie-ins     1" × 4"    
Bracing     1" × 4"    
Planking  
Not more than 6' span
    11/4" × 9"    
Up to 10' span
    2" × 9"    
Toeboards     1" × 6"    
Guardrails     2" × 4"    

Note: For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 47.88 Pa.


TABLE 3314.12.1(2)
MINIMUM SIZE AND MAXIMUM SPACING OF MEMBERS OF SINGLE WOOD POLE MEDIUM DUTY SCAFFOLDS
UNIFORMLY DISTRIBUTED LOAD
NOT TO EXCEED 50 psf
Max. height of scaffold 20' 40' 60' 75'
Poles or uprights (min) 3" × 4"
or
2" × 6"
4" × 4" 4" × 6" Top 60'
4" × 4"
Lower Sect.
4" × 6"
Pole foundation (min)     2" × 9"    
Max. pole spacing
(longitudinal)
    8'-0"    
Max. width of scaffold 5'-0" 8'-0"
Bearers or putlogs
(min)
3" × 4" or 2" × 6" (on edge) 3" × 5" or 2" × 9" (on edge)
Max. spacing of bearers or putlogs     8'-0"    
Ledgers (minimum)     2" × 9" (on edge)    
Vertical spacing of ledgers (max)     7" × 0"    
Nonsupporting stringers     1" × 6" or 11/4" × 4"    
Tie-ins     1" × 6"    
Bracing     1" × 6"    
Planking  
Not more than 6' span
    11/4" × 9"    
Up to 8' span
    2" × 9"    
Toeboards     2" × 9"    
Guardrails     2" × 4"    

Note: For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 47.88 Pa.


TABLE 3314.12.1(3)
MINIMUM SIZE AND MAXIMUM SPACING OF MEMBERS OF SINGLE WOOD POLE HEAVY DUTY SCAFFOLDS
UNIFORMLY DISTRIBUTED LOAD
NOT TO EXCEED 75 psf
Max. height of scaffold 20' 40' 60' 75'
Poles or uprights (min) 3" × 4"
or
2" × 6"
4" × 4" 4" × 6" Top 60'
4" × 6"
Lower Sect.
6" × 6"
Pole foundation (min)     2" × 9"    
Max. pole spacing
(longitudinal)
    6'-0"    
Max. width of scaffold 5'-0" 8'-0"
Bearers or putlogs
(min)
3" × 5" 3" × 6" or 2" × 9"
Max. spacing of bearers or putlogs     6'-0"    
Ledgers (minimum)     2" × 9" (on edge)    
Vertical spacing of ledgers (max)     7" × 0"    
Nonsupporting stringers     2" × 4"    
Tie-ins     1" × 6"    
Bracing     1" × 6"    
Planking     2" × 9"    
Toeboards     2" × 9"    
Guardrails     2" × 4"    

Note: For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 47.88 Pa.


TABLE 3314.12.1(4)
MINIMUM SIZE AND MAXIMUM SPACING OF MEMBERS OF INDEPENDENT WOOD POLE LIGHT DUTY SCAFFOLDS
UNIFORMLY DISTRIBUTED LOAD
NOT TO EXCEED 25 psf
Max. height of scaffold (ft) 20' 40' 60' 75'
Poles or uprights (min) 2" × 4" 3" × 4"
or
2" × 6"
4" × 4" Top 60'
4" × 4"
Lower Sect.
4" × 6"
Pole foundation (min)     2" × 9"    
Max. pole spacing
(longitudinal)
 
With 1 1/4" × 9" ledgers
    6'-0"    
With 2" × 9" ledgers
    10'-0"    
Max. pole spacing (transverse)     10'-0"a    
Ledgers (min)     1 1/4" × 9" (on edge) or 2" × 9"    
Vertical spacing of ledgers (max)     7'-0"    
Bearers (min)     1 1/4" × 9" (on edge)    
Non-supporting stringers     1" × 4"    
Bracing     1" × 4"    
Planking  
Not more than 6' span
    11/4" × 9"    
Up to 8' span
    2" × 9"    
Toeboards     1" × 6"    
Guardrails     2" × 4"    

Note: For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 47.88 Pa.
  1. Total base dimension in both directions to be at least 25 percent of height.


TABLE 3314.12.1(5)
MINIMUM SIZE AND MAXIMUM SPACING OF MEMBERS OF INDEPENDENT WOOD POLE MEDIUM DUTY SCAFFOLDS
UNIFORMLY DISTRIBUTED LOAD
NOT TO EXCEED 50 psf
Max. height of scaffold (ft) 20' 40' 60' 75'
Poles or uprights (min) 3" × 4"
or
2" × 6"
4" × 4" 4" × 6" Top 60'
4" × 6"
Lower Sect.
6" × 6"
Pole foundation (min)     2" × 9"    
Max. pole spacing (longitudinal)     8'-0"    
Max. pole spacing (transverse)     10'-0"a    
Ledgers (min)     2" × 9" (on edge)    
Vertical spacing of ledgers (max)     6'-0"    
Bearers (min)     2" × 9" (on edge)    
Non-supporting stringers     11/4" × 4" or 1" × 6"    
Bracing     1" × 6"    
Planking  
Not more than 6' span
11/4" × 9"
Up to 6' span
2" × 9"
Toeboards 2" × 9"
Guardrails 2" × 4"

Note: For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 47.88 Pa.
  1. Total base dimension in both directions to be at least 25 percent of height.


TABLE 3314.12.1(6)
MINIMUM SIZE AND MAXIMUM SPACING OF MEMBERS OF INDEPENDENT WOOD POLE HEAVY DUTY SCAFFOLDS
UNIFORMLY DISTRIBUTED LOAD
NOT TO EXCEED 75 psf
Max. height of scaffold (ft) 20' 40' 60' 75'
Poles or uprights (min) 4" × 4" 4" × 4" 4" × 6" Top 60'
4" × 6"
Lower Sect.
6" × 6"
Pole foundation (min) 2" × 9"
Max. pole spacing
(longitudinal)
6'-0"a
Max. pole spacing
(transverse)
10'-0"a
Ledgers (min) 2" × 9" (on edge)
Vertical spacing of ledgers (max) 5'-0"
Bearers (min) 2" x 9" (on edge)
Non-supporting stringers 11/4" × 9"
Bracing 1" × 6"
Planking 2" x 9"
Toeboards 2" × 9"
Guardrails 2" × 4"

Note: For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 47.88 Pa.
  1. Total base dimension in both directions to be at least 25 percent of height.

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