Pillar calculation help!

[Mixmax]

Getting confused when I read but trying to learn..

Summer house (5m*10m) on piers. Glulam beams 55*225 to use as beams. Floor joists of 45*22. Raised wall sections are 3m, open to the ridge on half and half loft. Gable roof with SPV tiles 5m. Snow zone 2.

How should I calculate the pier spacing? Please explain in layman's terms.

 

[witten]

This is not a layman's task.

But the main steps are:

- Load countdown to the beam
- Dimensioning of the beam, in your case with the given dimension of the beam, test for the maximum pillar distance before the beam becomes overloaded
- From the calculation, read off the load to the pillars and dimension the pillar and adjust the size so that the maximum allowable ground pressure is not exceeded.

The calculations should follow Eurocode.

It is usually better to start by estimating the distance between the pillars and then calculating the size of the beam after that. It's often cheaper and less work with fewer pillars and larger beams. You've reversed it by determining the size of the beam first, which works but is not the normal approach.

 

[Mixmax]

Thanks for the explanation, I just wanted layman's terms to understand a bit better. I'll leave the calculations to others, but I want an overall overview.
The material for the bärlina was already available, hence the use of the dimension.