## Steel grillage for steel lattice tower

## Steel grillage for steel lattice tower

(OP)

Hello,

I have never calcualte a steel grillage for a steel lattice tower. I have always calculated stubs angle for concrete pier. Now I am not busy at work and I want to lear how to calculate and design.

Can anyone help me? Where can I find information? In ASCE 10-97 there isn't formulas to calculate. I want to calculate a foundation as shown in figure 7.1 a) of ASCE 10-97.

Thank you very much.

I have never calcualte a steel grillage for a steel lattice tower. I have always calculated stubs angle for concrete pier. Now I am not busy at work and I want to lear how to calculate and design.

Can anyone help me? Where can I find information? In ASCE 10-97 there isn't formulas to calculate. I want to calculate a foundation as shown in figure 7.1 a) of ASCE 10-97.

Thank you very much.

## RE: Steel grillage for steel lattice tower

The grillage foundation is for lightly loaded leg angles like those for tangent towers with small wires and short spans. I would look at foundation design books, but as far as I know, they have not been used for quite a while.

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I have been called "A storehouse of worthless information" many times.

## RE: Steel grillage for steel lattice tower

Where I work, they have design one steel grillage foundition in the last 20 years (but I couldn't find calculations), and in the other company I have worked more or less the same. This kind of grillage was designed and manufactured for Cuba and for Costa Rica.

I know is quite unusual, but I want to be ready if we need to design in the future. I have clear the idea of who calculate this foundation but I would find an example solved.

To have the area of the grillage in contact with soil should be Sigma admissible of soil = F/Area angles. But for uplift load is the same than a concrete pier? Is the same idea than in concrete pier?