Decking: substituting steel for timber where possible?

[tatmaninov]

I would like to replace some existing decking in a sloped garden (max height circa 1m, total area circa 20m2) and considering to do part of it in galvanised steel, as I perceive this will last longer and require less maintenance than timber.  My first thought was to cast the steel decking posts into the concrete footing, but from my initial research I don’t find any evidence of others doing it this way and I see the posts mostly bolted to the footing or some sort of anchor (L/J bolt) cast into the concrete, then the posts attached to the anchor.  Is there a reason why I should avoid to cast the post in the concrete?  My assumption is this would be stiffer/stronger than bolting to the concrete, only downside I foresee is if I ever wanted to replace the post it would be virtually impossible without also replacing the footing (maybe I just answered my own question).

 

Carrying on the theme of opting for steel over timber, again any good reason why you would advise against using steel for the beams and possibly joists?

 

Many thanks in anticipation of any tips you can share with me.

[saveasteading]

Steel into concrete is fine. In fact the chemistry protects the steel.

The problem is in getting the positioning and height right.

 

Galvanised steel or fully protected timber are both suitable. If you can keep the area dry by diverting rain and encouraging airflow ieither should last many years.

[Temp]

Make sure you have photos of the decking before taking it down as the original might have needed planning permission.

 

Main reason against steel will probably be cost. Oak might be bit cheaper?

Edited June 17, 2023 by Temp