This worksheet calculates the plastic moment (M
Special Unit Definitions:
Deck Thickness:
Deck Effective Width:
Sacrificial Wearing Surface:
03/02/2011: Case I - Case VII - Absolute value signs added to all distance equations to ensure positive distance values. Case V - CaseVII - Equation dc rewritten to solve distance to center of
compression flange. Originally written as ds instead of dc. Assumption added stating concrete in tension is neglected in equations.
Concrete Compressive Strength:
Width of the Compression Flange:
Thickness of the Compression Flange:
Width of the Tension Flange:
Thickness of the Tension Flange:
Web Depth:
Web Thickness:
Compression Flange Yield Strength:
Tension Flange Yield Strength:
Web Yield Strength:
Area of Rebar Top:
Note: If Rebar is excluded then set Art and Arb equal to 0 in2. Additionally it is a good idea to set dtr and dbr to 0 in. This way the "Cases" are limited to 1, 2, and 7.
Area of Rebar Bottom:
Rebar Yield Strength:
Haunch (Bottomof Deck To Top of Web):
Distance From Centroid of Top Rebar To Bottom of Deck:
Distance From Centroid of Bottom Rebar To Bottom of Deck:
Adjust the slab thickness subtracting the sacrificial wearing surface:
Top Rebar Force
Slab Force
Bot Rebar Force
Compression Flange Force
Web Force
Tension Flange Force
(Plastic Moment)
(Depth of Web in Compression)
(Distance From Top Of Deck To Plastic N.A.)