Lightweight side gate: metal frame design suitable for push button lock

[ToughButterCup]

I need to make a gate for what I hope will be a reasonably secure area in our outhouse. That means a metal frame.

The frame will carry some lightweight cladding - 

 

The question is what's a reasonable spec for the metal used in the frame ?

30mm square section tube?, Is that too heavy?

 

Here's a couple of screen-grabs of a design that I'd like to follow. (from TikTok)

 

 

What do you think? 25mm, square section enough ? 

 

 

[markc]

I would go 30mm thin wall, 1.5mm ish for stiffness. You won’t be having high compressive or tension loads so no need for thicker wall thicknesses. 

[Russell griffiths]

As mark said, it’s the wall thickness that will decide the weight 

25 x25 x5mm. Will be heavier than 30x30x1mm wall thickness 

have a think how it’s being welded this might guide you choice of wall thickness. 
1.5mm isn’t a bad place to start. 
 

remember we have seen your welding previously. 😂😂😂

[ToughButterCup]

6 hours ago, Russell griffiths said:

....

remember we have seen your welding previously. 😂😂😂

 

Everybody's got to start somewhere... But just to spite you Mr. Griffiths, I'm going to weld it all myself. So there. 

 

Harrumph.

[joe90]

With my welding I need an angle grinder to tidy it up afterwards 🙄

[Iceverge]

A grinder and paint makes me the welder I ain't 🤣.