Minimum Psi For Floor Structures

69 chapter 4 floor construction woodframe floor systems and concrete slab on grade floors are discussed in this chapter.

Minimum psi for floor structures. Comprising the roof floor wall and foundation systems including claddings finishes and fixed equipment. For joist spans 19 2 24 inches nwfa installation guidelines recommend a minimum panel thickness of 7 8 inch osb or plywood. The 4 inch pour of a standard slab is recommended for both garage floors and interior floors. Table 3 3 provides values for common material densities and may be useful in.

1 pound per square foot per foot 0 1571 kpa 2 m 1 pound per square inch 6 895 kpa. Rather the reader is referred to the aisi standard for cold formed steel framing prescriptive method for one and two family dwellings aisi 2001 for guidance. The minimum building code which most builders build to is 23 32 inch osb or plywood. Nr not required.

When using the recalibrated unit strength table above a concrete masonry unit complying with the minimum requirements of astm c90 and laid in type s or m mortar produces an assembly compressive strength of 2 000 psi 13 8 mpa which is substantially larger than the historical default minimum of 1 500 psi 10 3 mpa used for the specified. The chart is divided into five floor sections. Add the minimum required outlet pressure of 100 psi for post 93 to the head pressure and you have a good ballpark pump pressure that can be increased. Table values are based on reinforcing bars with a minimum yield strength of 60 000 psi.

Soil classes are in accordance with the unified soil classification system. Table 2306 3 1 recommended shear pounds per foot for wood structural panel diaphragms with framing of douglas fir larch or southern pine a for wind or seismic loading panel grade common nail size or staple f length and gage minimum fastener penetration in framing inches minimum nominal panel thickness inch. For both interior floors and garage floors the minimum strength recommendation is 2 500 psi however similarly to slab projects an ideal standard is 4 500 psi especially for garage floors which must sustain much more wear and tear and heavy machinery. In buildings that have no more than two floors and a roof.

Next consult a span table to cross reference the spacing and span to find the required fb value for that table s load limits. In the example the joists have a spacing of 16 inches and a span of 11 feet 2 inches.