## Rectangular Hollow Section beam calculator

This is solely an
Euler-Bernoulli beam
[Wikipedia] leading into simple "Moments sum to zero" calculator.

It knows nothing of design codes (*eg* the "EN 1990" series of
the "Eurocodes").

What this calculator does is: [links are to Wikipedia]; {are the input variables}

I {dimensions}
→
Z
→
M_{y} {σ_{y}}
→
M=FL or M=FL/4 {L}

* Use SI units *
You can use indicial notation

*eg* 123.45mm == 1.23453e-1m == 123.45e-3m

My calculation is based on a "sharp" right-angled-corner shape.

In the real world Rectangular Hollow Sections have curved corners.

The deviation caused by this from real sections is small - but there.

Authoritative tabulated data for commercial sections including
important characteristic which cannot be readily calculated are
presented as
The Blue Book - Steel for Life
[external link]
which is considered a vital information for most working with steel.

The program might allow you to rapidly explore concepts, but
The Blue Book - Steel for Life
[external link] needs to be your reference.

(R. Smith, 24Jul2023, 03Aug2023 (title))