The span of a beam is dependent on a few variables.
Floor strength 2x6 vs oak.
Bur oak in the white oak lumber group is 10 300 psi.
The greater the resistance the stronger the material.
Acacia 17 500 psi.
One is the maximum stress that the material can endure before failure occurs.
2 grade of douglas fir and maximum span floor joists imperial units nails and spikes withdrawal force allowable withdrawal load for nail and spikes softwood and hardwood structural strength classes strength classes bending stress and mean density of hardwood and softwood.
Unlike syp oak is typically cut with a band saw rather than a planer.
Approx strength of wood vs.
Here is the strength of the woods in question.
Aluminum 02 17 2009 07 05 pm.
Angelim pedra 17 600 psi.
In the trailer industry oak decking is referred to as rough oak for a reason.
Ash 15 000 psi.
To compare to other design loads residential floors are generally 40psf live and 10 psf dead decks and balconies are 60 or 100psf depending on area and 10psf dead load.
Strength in bending mor of white oak at 12 percent moisture content mc is 15 200 psi.
First floor live loads have higher requirements than second floor live loads 40 pounds per square foot vs.
Andiroba 15 620 psi.
Note that there are several ash species and they are not all the same strength.
1500 1400 1200 950 900 800 775 725 675 425.
90 90 90 90 90 90 90 90 90 90.
Strength may be defined as the ability to resist applied stress.
3100 2930 2700 2010 1900 1720 1670 1440 1320 865.
Rough oak is used for trailer decking primarily for its strength.
Maximum floor joist span no.
Likewise within the white oak grouping some are stronger than others.
An inaccessible attic space on the other hand might have a live load of only 20 psf.
Dense select structural select structural non dense select struc no.
A room used solely for sleeping might need to carry only 30 psf whereas a garage floor over a basement would need 50 psf or higher.
I am not an engineer just my thoughts.
2700 2550 2350 1750 1650 1500 1450 1250 1150 750.
Hi all i have a project where i want to replace some plywood with some aluminum plate.
Oak is one of the only decking materials recommended for use with tracked equipment such as skid steer loaders and excavators.
Fewer posts on upper level decks are typically more desirable to the occupants and this drives the use of larger framing materials for longer spans.
660 565 480.
One way that i have seen an engineer fix a cut floor truss was to gusset on both sides with 1 2 plywood.
Edited 8 14 2005 6 42 pm et by wyatt.
Another approach is to measure the deformation or strain that results from a given level of stress before the point of total failure.
The species of lumber size of lumber and the load it carries.
Australian cypress 11 400 psi.
