Lumber & Timbers

 

            Board footage formula:

 

                        bf  =  thickness"  x  width"  x  length'  /  12

 

                        (thickness and width in inches,  length in feet)

 

            Calculate weight for SYP:

 

                        Rough green or treated  =  5.0#  x  bf

 

                        Rough  or S1S1E full dry  =  3.5# x  bf

 

                        S4S green or treated timbers or planks  =  4.0#  x  bf

 

                        S4S green or treated dimension  =  3.2#  x  bf

 

                        S4S dry 25% m.c. timbers or planks  =  2.8#  x  bf

 

                        S4S dry 19% m.c. dimension  =  2.2#  x  bf

 

                        Dimension is lumber 2" or less in thickness

                        Planks are 3" or 4" in thickness

                        Timbers are 5" x 5" or larger

                        Deduct .2# per board foot if T&G

 

Examples:       One 48,000# load of rough green lumber will be approximately 9,600bf.  A load of rough dry lumber will be approximately 13,700bf.  Other factors that can effect the weight of lumber is amount of oversize ( rough cut), density, moisture content, and specie.      

 

 

 

Poles & Pilings

 

            An average truck can carry roughly 750 cubic feet (cf) of poles or pilings. A cubic foot of saturated (treated or green) wood weighs approximately 60#s. It's advisable to figure 63#  per cubic foot because some of the piles may be oversized and will cause the total weight to be higher than calculated.  Most trucks with bolsters can carry 47,000#s, so that's anywhere from 746 to 783 cubes depending on the amount of oversize.

 

Class Piling Sizes

 

            Class A         14" @ 3' from butt                9" tip up to 50'

                                    for  all lengths                         8" tip from 51' to 70'

                                                                                    7" tip from 71' to 90'

                                                                                    6" tip from 91' and longer

 

 

            Class B         12" @ 3' from butt                8" tip up to 39'

                                    up to 50'                               7" tip from 40' to 74'

                                                                                    6" tip from 75' to 90'

                                    13" @ 3' from butt                5" tip from 91' and longer

                                    from 55' and longer

 

Piling Cube Chart

 

            Length          Class A          Class B

                        20'                   22.0                 18.1

                        25'                   24.8                 19.5

                        30'                   25.1                 20.4

                        35'                   26.2                 22.8

                        40'                   32.6                 24.5

                        45'                   39.3                 29.5

                        50'                   46.6                 30.4

                        55'                   54.3                 35.4

                        60'                   62.6                 40.7

                        65'                   71.1                 46.4

                        70'                   80.1                 52.2

                        75'                   89.5                 58.3

                        80'                    ---                  70.1                                                                            

 

 

Class Pole Cube Chart

 

                                                              Class

Length            1            2            3            4            5            6            7            9

     25'           15.3      13.2        11.5      10.0          8.6          7.5        6.4         4.7

     30'           20.4      17.8        15.4      13.3         11.6        10.1       8.6         6.4

     35'           26.2      22.8        19.7      17.1         14.8        12.8      11.1       10.1

     40'           32.6      28.2        24.5      21.2         18.4        16.9      14.0       12.5

     45'           39.3      34.1        29.5      25.6         22.2

     50'           46.6      40.4        35.0      30.4         25.6

     55'           54.3      47.1        40.8      35.4

     60'           62.6      54.2        47.0      40.7

     65'           71.1      61.6        53.4      46.4

     70'           80.1      69.5        60.2      52.2

     75'           89.5      77.7        67.3      58.3

     80'           99.3      86.1        74.6

     85'         109.6      94.9        82.3

     90'         120.1    104.1        90.2

     95'         131.0    113.5        98.5