Definition. 1  Thoracic strain or sprain refers to the acute or subacute onset of pain in the region of the thoracic spine due to soft tissue injury, including muscles, ligaments, tendons, and fascia, of an otherwise normal back.
If the floor joist is damaged and and you need to have it repaired by a professional, the costs can vary anywhere from $150 to $400 per joist. For the average room that is titled, the price can easily soar into the thousands. To find an exact quote, free quote search engines such as HomeAdvisor.com can help.
Below is a table giving the minimum size floor joists needed for 16â³ and 24â³ on center (o.c.) spacing when using #2 lumber with 10 pounds per square foot of dead load and 40 pounds of live load. You can always use bigger lumber, closer spacing, or a smaller span; just donât go smaller, further apart, or a longer span.oist Span. Putting all these factors together gives the minimum size joists needed for various types of wood, grades of lumber, sizes of boards, spacing of joists, and the load that will be placed on the floor.