Thread: Tabletop to base ratio

first consideration

is the table for

standing at -- 100cm seems a bit too low for this

sitting at -- 100cm seems a bit on the too high size

leaning a hip against -- will require a fairly sizable base

Originally Posted by ian

first consideration

is the table for

standing at -- 100cm seems a bit too low for this

sitting at -- 100cm seems a bit on the too high size

leaning a hip against -- will require a fairly sizable base

The bar table is mainly designed for sitting at with 75cm stools. This is within the range recommended for that size stool. I am happy to go up to 105cm height if I have to. Good point re: leaning against it rather then on it. It sounds like It seems I will have to have a fairly wide/heavy base and maybe sort it out via trial and error.

Originally Posted by metester

The bar table is mainly designed for sitting at with 75cm stools.

I don't have ready access to the diagrams of seating positions and table heights right now, but with any chair or stool, you need to allow space for a person's thighs to fit it under the table.
100cm less 5 to 15 cm for the top and table frame seems to leave too little space for sitting on a 75cm stool.

but Mr Google should be able to help you

Good point re: leaning against it rather then on it. It sounds like It seems I will have to have a fairly wide/heavy base and maybe sort it out via trial and error.

From memory the "rule of thumb" for stability against overturning from leaning type loads is that the base area, at ground level, should be 2/3rds of the top dimension, in your case around 60cm, and that most of the structure's mass should be in the lower 1/3rd of the height.

my initial thought is a barrel sized and shaped base.

Make the base so addition weight can be added for stability if you are not sure. Just remember that as it gets heavier, it will be harder to move.

I like to do my round tables with the feet about 75 mm in from the edge of the top. This is for the triform or Quadraform type.

Originally Posted by ian

From memory the "rule of thumb" for stability against overturning from leaning type loads is that the base area, at ground level, should be 2/3rds of the top dimension, in your case around 60cm, and that most of the structure's mass should be in the lower 1/3rd of the height.

my initial thought is a barrel sized and shaped base.

OK

have had some time to think about and remember stuff about stability against overturning.
The table in the diagram has a tendency to tip over because the leverage from the pushing force is greater than the tendency of the table to right itself.

To make the table more stable, the base needs to be wider so that the righting force (green arrow) x its lever is greater than tipping force (red arrow) x its lever

The easiest way to achieve this is to make the base larger and add mass to the table's base

Thanks guys. Some good information there. I think I will go with a base about 70mm smaller in diameter than the top with some added weight and height 105cm plus table top. Cheers!