Kilopond, the force exerted by gravity on a mass of one kilogram.
The hammarband distributes the force when it is positioned between the rafter and the stud.
The hammarband distributes the force when it is positioned between the rafter and the stud.
As a structural engineer, I encounter both terms bärlina and standing hammarband.
I prefer the terms standing and lying hammarband because they are more descriptive. The word bärlina is also used rather carelessly by many people for things that should really be called something else, like beam or load distribution.
Not having the lying hammarband I don't think is good practice. It is also probably difficult to calculate the contact pressure according to the building code, as large pressures perpendicular to the fibers are not allowed according to Eurocode.
I prefer the terms standing and lying hammarband because they are more descriptive. The word bärlina is also used rather carelessly by many people for things that should really be called something else, like beam or load distribution.
Not having the lying hammarband I don't think is good practice. It is also probably difficult to calculate the contact pressure according to the building code, as large pressures perpendicular to the fibers are not allowed according to Eurocode.
No, that surface doesn't become 45*45 if you have a horizontal top plate between the truss and the vertical top plate (the bearing line as some want to call it). The horizontal top plate distributes the load, so the surface becomes larger. How much larger depends on what the bearing looks like, where it is along the top plate, and the dimensions of the timber involved.Nissens said:
Construction veteran
· Åland
· 2 067 posts
Yes, first it was kg, then kilopond, and now newton
Ok, 1kP = 9.8kNS seniorkonsult said:
That gives 60kP x 9.8 = 588kN per cm2
4.5x4.5 = 20.3 cm2
20.3x 588= 11,936 kN
That really sounds like very large numbers.
Doesn't feel reasonable.
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Since the hammarband is hanging in the air in the part not supported by the load-bearing beam, it can support only a marginal force. Over time, it is likely only the load-bearing beam that will support the entire structure.R roli said:
No. 1kp = 9.8kN
The hammarbandet indeed absorbs a small force. But it distributes the force to the underlying stud so that the effective area becomes larger than 45*45mm.
The hammarbandet indeed absorbs a small force. But it distributes the force to the underlying stud so that the effective area becomes larger than 45*45mm.
Wasn't that EXACTLY what I wrote?D Daniel 109 said:
No, it wasn't.
Sure, the ridge beam acts like a "washer" and distributes the pressure over a slightly larger area by a few %. It probably makes some difference, but not a huge one, especially not on the truss side.D Daniel 109 said:
Strange, in my reader, those are exactly the numbers I have in the calculation in message #171.D Daniel 109 said:
What numbers are showing on your screen then?
These are the right numbers. But the wrong unit. You are making the same mistake as many others by inserting a capital letter where it doesn't belong. It's not unimportant when it comes to units.
I think our friend is, as usual, careful to note that, for example, kp is not the same as kP, which is kilopascal. At the same time, he doesn't know there should be a space between the numbers and the unit 😃