Roof for underground technical room for pool

[OlaMalmo]

We had a company here that did groundwork and paving, and when it was time to build a roof for the equipment room, they scratched their heads and didn't really have a plan, so we had to turn to another company.

The solution that was implemented was to lay a sloped tar roof towards the pool (the direction of the arrow, see the image) under the mixture of granite ceramics and decking, so that water drainage occurs towards the outside of the pool onto the floor in the equipment room, where there is drainage (a drilled hole in the floor).

Now to my concern: the water will then run down onto/along the wooden beams, which I guess are untreated. And I think with my very limited construction knowledge that this will rot relatively quickly.
But as I said, I do not know much about this, and it is a well-renowned company that carried out the work, so I would like to get some independent opinions on what you think about the durability.

Many thanks in advance.

Attached are images of what it looked like before the roof was in place, how it looks from below on the side of the equipment room that is also the outside of the pool, a picture down through the hatch from above, and a picture from above with the top layer where I marked which part the roof is under, as well as the roof slope.

 

[OlaMalmo]

No one daring to make a guess?

Do I need to worry that the balks will give way in a couple of years if they are constantly exposed to water?

I would be extremely grateful for any input.

 

[Jonatan79]

No one daring to make a guess?

Should I be worried that the beams will give way in a couple of years if they are constantly exposed to water?

I would be extremely grateful for any input.

Not worried! They are positioned with good ventilation.

 

[OlaMalmo]

Stupid question maybe, but when does wood rot then? Is it when it kind of lies and swims in water?
Well, that won't happen here anyway.

 

[Jonatan79]

Maybe a dumb question, but when does wood rot? Is it when it's just lying and swimming in water?
In any case, that won't happen here.

When it doesn't dry and is exposed to harsh weather and wind.

 

[MrJay]

Wood does quite well in water, there are people whose job is to pull up old tree trunks from the lakebed and sell them for a high price... In your case, as long as the wood has the opportunity to dry and is well-ventilated, it's fine, it's worse with enclosed and damp wood.

 

[Kristoffer Carlsson66]

We had a company here that did groundwork and paving, and when it was time to build a roof for the tech room, they scratched their heads and didn't really have a plan, so we had to turn to another company.

The solution that was implemented was to place a sloping bitumen roof towards the pool (in the direction of the arrow, see picture) under a mix of porcelain stoneware and decking to direct water runoff towards the outside of the pool down onto the floor in the tech room, where there is a drain (a drilled hole in the floor).

Now for my concern: the water will then run down on/along the wooden beams, which I guess are untreated. And I think, with my very limited construction knowledge, that this will rot relatively quickly.
But as I said, I don’t know much about this, and it is a well-reputed company that carried out the work, so I would like to get some independent opinions on what you think about the durability.

Thank you so much in advance.

Attaching pictures of what it looked like before the roof was in place, how it looks from below on the side of the tech room that’s also the outside of the pool, a picture down through the hatch from above, and a picture from above with the top layer where I marked which part the roof is under, and the slope of the roof.

Hello, what are the dimensions of the tech room? Width and depth?