I'm thinking of placing a 540l aquarium on the upper floor, estimating the total weight to be about 700kg with dimensions 1500x600x600mm. I'm almost completely sure it will work without problems, but would like some input.
The aquarium will be placed in a corner against an outer wall, perpendicular to the joists (four beams sharing the load). The joists are composed of 45x220mm C24 (or C30) with a span of 3800mm, spaced at cc600 and cross-braced in the middle. On top of this lies double layers of glued and screwed floorboards.
I've had a similar aquarium in the next room, but there the spacing was cc300, although the aquarium was placed the other way (meaning only three beams sharing the load) and in the middle between the support points. Measured deflection directly underneath and it was so small it might have been a measurement error, about 1-2mm.
The aquarium will be placed in a corner against an outer wall, perpendicular to the joists (four beams sharing the load). The joists are composed of 45x220mm C24 (or C30) with a span of 3800mm, spaced at cc600 and cross-braced in the middle. On top of this lies double layers of glued and screwed floorboards.
I've had a similar aquarium in the next room, but there the spacing was cc300, although the aquarium was placed the other way (meaning only three beams sharing the load) and in the middle between the support points. Measured deflection directly underneath and it was so small it might have been a measurement error, about 1-2mm.
Placing a big tank near an outer wall is usually the safest spot since the load goes straight down, and perpendicular beams handle this kind of weight better. I’ve run a similar setup and even kept heavy plants like https://www.aquarzon.com/24-anubias in it without issues. If you spread the weight with a solid stand or a thick base plate, the floor generally stays happy.