Fence construction advice

[nesbit]

Hi,

I am helping a mate build a new fence/screen on his property this weekend to help cover some unsightly areas. Details are as follows:

• 2.5 meters in height
• 10 meters in length
• 90x90 treated pine posts
• 90mm boards (horizontal)

I am just wondering if it is acceptable to set the posts in stirrups instead of setting them in holes like the standard way of fences. The only reason is that he managed to get all the timber for free and the posts are all 2.5 meters in height so he really doesn't want to cut them. If the stirrups are ok what depth should we digging the holes for the concrete and stirrups?


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nesbit

[DJ’s Timber]

Stirrups are only used for posts that are tied into a solid structure, so unless the top of each post is tied into the house, no you can't used them.

[rat52]

Too wobbly for that hight. Fence posts need to be a min 600mm below ground level and for 2.4m they may need to be deeper.

[nesbit]

If the finish height was to be 2meters what depth would the post holes have to be?

[pawnhead]

Fish plates would do the job.

[Barry_White]

What you have to remember is the wind loads on a solid panel fence that high are pretty severe so even using fish plates there would be a chance of the posts being split at the bolt holes.

You would be better imbedding a piece of RHS into concrete and set the post in that and bolt through the RHS and the post.