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Deck Floor Joist Spans

Deck Floor Joist Spans - Part 2

Floor Joist Spans For Decks - 16" & 24" Joist Spacing

Part 1 - 12" Joist Spacing

Following are tables for the two most common required psf loads for 16 inch joist spacing. All of the tables are based on the use of #2 grade lumber.

Table 3 is for 40 psf live load and 10 psf dead load on 16 inch joist centers.

Table 4 is for 60 psf live load and 10 psf dead load on 16 inch joist centers.

Table 3

16 inch Joist Spacing, 40 psf live load & 10 psf dead load - Grade #2 lumber

  southern pine name western cedar name redwood name southern pine name western cedar name redwood name southern pine name western cedar name redwood name southern pine name western cedar name redwood name

Length In Feet

2 X 6

2 X 8

2 X 10

2 X 12

8

                       

9

                       

10

                       

12

                       

14

                       

16

                       

 

Table 4

16 inch Joist Spacing, 60 psf live load & 10 psf dead load - Grade #2 lumber

  southern pine name western cedar name redwood name southern pine name western cedar name redwood name southern pine name western cedar name redwood name southern pine name western cedar name redwood name

Length In Feet

2 X 6

2 X 8

2 X 10

2 X 12

8

                       

9

                       

10

                       

12

                       

14

                       

16

                       

 

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Following are tables for the two most common required psf loads for 24 inch joist spacing. All of the tables are based on the use of #2 grade lumber.

Table 5 is for 40 psf live load and 10 psf dead load on 24 inch joist centers.

Table 6 is for 60 psf live load and 10 psf dead load on 24 inch joist centers.

Table 5

24 inch Joist Spacing, 40 psf live load & 10 psf dead load - Grade #2 lumber

  southern pine name western cedar name redwood name southern pine name western cedar name redwood name southern pine name western cedar name redwood name southern pine name western cedar name redwood name

Length In Feet

2 X 6

2 X 8

2 X 10

2 X 12

8

                       

9

                       

10

                       

12

                       

14

                       

16

                       

 

Table 6

24 inch Joist Spacing, 60 psf live load & 10 psf dead load - Grade #2 lumber

  southern pine name western cedar name redwood name southern pine name western cedar name redwood name southern pine name western cedar name redwood name southern pine name western cedar name redwood name

Length In Feet

2 X 6

2 X 8

2 X 10

2 X 12

8

                       

9

                       

10

                       

12

                       

14

                       

16

                       
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