I am going to make gateposts for the farm since there are a lot of thieves nearby. I am planning to make those "posts" that used to be at the entrance to properties, so larger "pillars" around 1.5-2 meters high. Between these, I will make a steel gate. But I am a bit worried about the force that will put pressure on the pillar sideways and downward. I initially thought of using concrete blocks and plastering them, but will the concrete hold if I attach a steel gate to them? It will surely weigh quite a bit... Picture for attention and inspiration.
Why not use two massive stone columns with a well-reinforced cast beam in between underground? We have two granite columns measuring 30x30 and 120 high, with a wrought iron gate in between. Between these, about 30-40 cm down in the ground, six rebar rods are drilled in and fastened with chemical anchors. Everything is then cast together with a beam 40 wide and 30 deep.
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· Södermanlands län0
· 983 posts
A reinforced underground beam is what's needed!
Being poor and frugal, I would drive two pieces of used railway track deep into the ground and be satisfied with that............. though if you want it to look nice, I think Mape17 is on the right track.
It's not terribly difficult to wedge and chisel a couple of massive stone gateposts out of granite if you don't have high demands on smoothness and right angles. If you're lucky, you might even find a couple of used stone gateposts cheaply. A few weeks ago, I got a stone gatepost for free, and it happens to match the stone gatepost we already have lying at the edge of the forest since they removed the gate over the road sometime before I was born.
If you cast two solid concrete pillars to frost-free depth and place a little Styrofoam around them and cast the stone gateposts as a continuation above ground, they should stand there for 100 years without needing a cross beam...... but if you want to cast a beam, you are fully covered.
It's not terribly difficult to wedge and chisel a couple of massive stone gateposts out of granite if you don't have high demands on smoothness and right angles. If you're lucky, you might even find a couple of used stone gateposts cheaply. A few weeks ago, I got a stone gatepost for free, and it happens to match the stone gatepost we already have lying at the edge of the forest since they removed the gate over the road sometime before I was born.
If you cast two solid concrete pillars to frost-free depth and place a little Styrofoam around them and cast the stone gateposts as a continuation above ground, they should stand there for 100 years without needing a cross beam...... but if you want to cast a beam, you are fully covered.
