On 13/07/2019 10:10, GB wrote:
On 13/07/2019 09:56, T i m wrote:
On Sat, 13 Jul 2019 01:44:02 +0000, Alicia Harrison
m wrote:

we have replaced wood on garden bench. but it is wobbling side to side

We normally call that 'racking'.

it
has all its straps etc. does the wood lats have to be very tight into
each end
?

To minimise racking, yes.

the sides wrought iron are Lyon heads which are old but I'm stuck on
how to
get this right thanks

Ensure the slats are attached to the ends as tight as possible
(without crushing the wood etc) and if that isn't sufficient, add some
(two) diagonals across the back (could be wires or flat steel straps)
to further restrict said racking.

Unless there's some diagonal bracing, it's quite optimistic to hope the
wooden slats alone will stop it rocking.

What is needed is new slats that completely fill the holes in the sides.
Given that the slats have already been cut to size, it might be worth
cutting a few wedges and hammering those in to fill up the gaps. If
there's any movement, they'll probably tend to work themselves loose. At
least, it will enable you to see how rigid you can make it just with the
slats before going to the trouble and expense of getting new ones.


An example of braces (and a strap which also adds rigidity) is here

https://www.arbc.co.uk/sites/all/themes/arbc/images/bench-kits/upended-bench.jpg

Always worth looking for parts left over from the old one

--
Robin
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