The Strength Of Filler Joist Floors

The term filler joist is a generic one used for certain types of building floors dating in particular from the late victorian era to world war ii.

The strength of filler joist floors. Coke breeze and filler joist construction masonry and steel this information is only available to paying isurv subscribers. The strength of filler joist floors. This sample table gives minimum floor joist sizes for joists spaced at 16 inches and 24 inches on center o c for 2 grade lumber with 10 pounds per square foot of dead load and 40 pounds of live load which is typical of normal residential construction. How to make floor joists stronger.

These may commonly have embedded iron or steel joists. Long spans of joists in newer homes may wobble or bounce from foot traffic. After several centuries of service floor joists in older homes may sag or crack. Those of earlier date from the 19th century can have wrought iron sections or even cast iron tees in early floors.

Many structural engineers have for a long time been convinced that the effect of casing steel beams in concrete in the manner which has obtained for many years with the filler joist floor has a strengthening effect upon the floor and that it is safe to design the steelwork in such floors upon higher stresses than the extreme fibre stress of 7 5 tons per square inch which is usually specified.