Section Modulus for Framing (Metric Units)

Description Computes cross sectional area properties of a framing member made up of multiple components (Like a angle iron placed on a piece of plate).  Area properties from this sheet can be used to determine flexural stress, average shear stress and deflections.  The inputs may seem a bit complicated but they are really easy to obtain and are clearly explained in the template instructions.

Electronic Document Type:  Microsoft Excel spreadsheet           Cost: $20.00 US funds

Number of Pages: single sheet                        

Inputs:  

• overall depth of framing member (for all components combined)

• location of assumed neutral axis ANA (perpendicular to loading direction)

• for each beam component the following is required: description, cross section dimensions, distance to centroid from ANA, radius of gyration (Option One - Area Property Tables not used)

• for each beam component the following is required: description, cross sectional area, distance to centroid from ANA, moment of inertia about own centroid (Option Two - Area Property Tables used)

Outputs:  

• total cross sectional area

• distance from cross sectional area centroid to the ANA

• moment of inertia of framing member in direction of loading

• section modulus of framing member in direction of loading

Suggested Reading:

• any strength of materials text 

• Basic Ship Theory, Rawson and Tupper

• Principles of Naval Architecture, by SNAME

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Minimum System Requirements: Windows 95/98/NT/2000/XP/Vista/Windows7

Sample: A sample document is shown below.