Column Construction Calculator vs Uncertainty Calculator

Column Construction Calculator contains 35 calculators to measure and calculate different column and civil engineering parameters. NEW — Built-in Reference Library Look up standard material properties and auto-fill them straight into any calculator: • Steel — ASTM grades (A36, A992 W-shapes, A572 Grade 50, A500 Grade B & C HSS, A53 Grade B Pipe) with Yield Strength (Fy) and Modulus of Elasticity (E) • Aluminum — common structural aluminum grades • Concrete — ACI mix classes from 2500 psi to 10000 psi with compressive strength (f'c), modulus (Ec) and β₁ factor Available in Metric (SI) and Imperial (USCS) Units Column Calculator contains the following 35 Calculators: • Critical Buckling Load - Column Pivoted at Both Ends (Euler's Formula) • Critical Buckling Load - One End Fixed and Other End Rounded (Euler's Formula) • Critical Buckling Load - Both Ends Fixed (Euler's Formula) • Critical Buckling Load - One End Fixed and Other End Free (Euler's Formula) • Nominal Bearing Strength of Concrete (Column Base Plate Design) • Area of Base Plate for Factored Load • Length of Rectangular Base Plate (Wide-Flange Column) • Width of Base Plate - Parallel to the Flanges • Projection of Base Plate beyond the Flange and Parallel to the Web (m) • Projection of Base Plate beyond the Edges of the Flange and Perpendicular to the Web (n) • Equivalent Cantilever Dimension (n') • Column Base Plate Design Value (Lambda) • Column Base Plate Design Value (X) • Thickness of Base Plate (m) • Thickness of Base Plate (n) • Thickness of Base Plate (Lambda n') • Area of the Column • Allowable Bearing Pressure on Support (Base Plate occupies Full Area of Support) • Allowable Bearing Pressure on Support (Base Plate covers less than Full Area of Support) • Wall Thickness of Steel Pipe (Width of Face of Rectangular Section) • Wall Thickness of Steel Pipe (Outside Diameter of Circular Section) • Design Strength of Axially Loaded Composite Column • Design Strength of Concrete (Direct Bearing) • Effective Length Factor • Slenderness Ratio • Critical Buckling Load • Elastic Critical Buckling Load • Allowable Design Load – Aluminum Columns • Allowable Design Load – Aluminum Columns (Johnson's Equation – Straight Line) • Allowable Design Load – Aluminum Columns (Johnson's Equation – Squared Parabolic) • Ultimate Strength of Column - Zero Eccentricity of Load • Axial Load Capacity – Short Rectangular Members • Balanced Moment • Eccentricity – Balanced Condition • Eccentricity – Slender Columns

Uncertainty Calculator evaluates the error propagation throughout the mathematical expressions comprised of variables of uncertain value. The application allows input of up to three value-error pairs (A, B and C), that can be used as a parameters in the final expression. Error values should be provided in absolute (100 +/- 5) or in relative format, the latter should appear in percent format (100 +/- 5%). The evaluated expression can include numerous functions, that provided by row of the appropriate buttons. Components and functions can be added directly to the expression field by pressing the corresponding buttons. To encompass expression into the preset formula, select the expression and press the corresponding formula button. Particular attention should be paid to placing brackets to avoid equation ambiguity. The application deals with independent, random errors. So if this is a case never use A + A, but rather 2*A and never A*A*A but rather A^3! Obviously, different parameters can be combined in any way (A+B or C *A^2 .. is perfectly fine). Angles for trigonometric functions can be provided in degrees or radians, and that should be reflected by setting a yellow button to "DEG" or "RAD". Bear in mind the importance of units in any of calculations! Implementation Examples: 1.The charge passing through an electrical circuit is defined by: Q = I * t, where I is the current and t is the time. Calculate the total charge value when a current of 0.15 ± 0.01 A passes through the circuit for 120 ± 1 s: Input: A = 0.15 ± 0.01, B = 120 ± 1 The final expression will be A*B, and press Calculate: The final value will be: 18 ± 1.2 Thus, it can be reported the total charge as 18 C ± 1 C. Important! One should only report as many significant figures as are consistent with estimated error! So the value should be rounded to the rightmost decimal place at which error applies. 2. A ball is tossed straight up into the air with initial speed vo = (4.0± 0.2) m/s. After a time t = (0.60 ± 10%) s, the height of the ball is h = vo*t - 0.5gt^2 = 0.636 m (g = 9.80 m/s^2). What is the value and uncertainty of height? Input: A = vo = 4.0 ± 0.2, and B = t = 0.60 ± 10%, then the final expression should be: A*B – 0.5*9.8*B^2 The final value will be: 0.6 ± 0.4 (meters).