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1<'i, <br /> Purpose <br /> The purpose of this spreadsheet is to calculate the flexural and shear capacity of a simply-supported, 1-way slab(e.g. <br /> lagging between soldier piles). <br /> Definitions <br /> wu Ultimate line load on the beam(assumes uniform load and already factored) <br /> fc' the compressive strength of the concrete(in psi) <br /> fy the yield strength of reinforcment steel(in ksi) <br /> (31 factor relating depth of equivalent rectanfular compressive stress block to neautral axis depth <br /> As Area of steel in the beam section (in inch^2) <br /> d the depth of the beam from the center of steel to the compressive edge(in inches) <br /> h the gross concrete thickness of the section(in inches) <br /> p ratio of As to b*d <br /> pb controlling ratio of steel for tension-control design or compression-control design <br /> c the distance from the extreme compressive fiber to the neutral axis(in inches) <br /> ES the tensile strain in the steel at the nominal strength of the section <br /> Mn Nominal moment capacity of design section <br /> Vc Nominal shear capacity of concrete slab <br /> cp Appropriate resistance factor for use(moment or shear) <br /> Compression Controlled Design:concrete crushing will occur prior to tensile yielding of reinforcing steel <br /> Tension Controlled Design:reinforcing steel will yield prior to concrete crushing <br /> Instructions <br /> asdf Cells shaded orange(see left)indicate input parameters <br /> Cells shaded gray with orange writing(see left) indicate calculated parameters <br /> If the cells for both cp*Mn and cp*Vn are shaded green,then the design has satifactory capacity <br /> Other cells indicate the parameter being input or calculated or the units of the parameter <br /> I <br /> I <br />