I will soon be building my first house and will be casting a floor slab over part of the basement. I have been considering using PEVA 45 to hopefully make the work easier. What I haven't managed to understand is how to calculate the allowable spans.
The space that will have a floor slab is 8x8 meters, divided into 2 sections with Leca blocks. Exterior walls of 300mm ISO-block and interior wall of 200mm Leca block.
Orange lines are LECA and load-bearing.
Then I have a total length of my floor slab of 8 meters, but in two spans of 5m + 2.9m. I am trying to read the product sheet for PEVA 45 and find this:
And as a layman, I'm not quite sure how SPV is defined here, even though they so nicely have illustrations. Would my space be considered as a 2-bay, where each SPV is 5.4m (8.7m?) when you have a slab thickness of 120mm? Which would then work fine for my space. Does it also say that if I have a false ceiling, made of plasterboard, I can have 8.7m? Which sounds crazy, so probably not.
H = thickness of the slab in mm
SPV = Span in a section. In your case, you can have 5.4 m x 2.
As = amount of reinforcement in the form of support reinforcement (cm2/m), so 8.7 means the reinforcement is 8.7 cm2/m.
The numbers in parentheses indicate the span and support reinforcement with a suspended ceiling.
Note that the spans etc. are without field reinforcement.
H = thickness of the plate in mm
SPV = Span in a section. In your case, you can have 5.4 m x 2.
As = reinforcement amount in the form of support reinforcement (cm2/m), so 8.7 is the reinforcement, 8.7 cm2/m.
The numbers in parentheses indicate span and support reinforcement with a suspended ceiling.
Note that the spans, etc., are without field reinforcement.
Thank you very much, now I understand! I can plan without everything falling
Do you know about PEVA45? I've been trying to find construction drawings for where the sheet/flooring rests on the lecablock and still manage to insulate reasonably but haven't had any luck with my googling.
Thank you so much, now I'm keeping up! I can plan without everything falling apart
Do you know anything about PEVA45? I've been trying to find construction drawings for where the sheet/joist rests on the leca blocks and still manage to insulate properly but haven't had any luck with my googling.
No, unfortunately, I've never worked with PEVA45. If you need help with different types of dimensions and calculations of various kinds, I can assist. Give me a shout in PM if there's anything.
No, unfortunately, I have never worked with PEVA45. If you need help with different types of dimensioning and calculations of various kinds, I can assist. Give me a shout in PM if there's anything.
Okay. It's not impossible that I might need that! However, I couldn't PM, didn't have access to your profile page. Maybe that's not even where you do PMs, but I haven't been here for long
Calculation of reinforcement is one thing I would need help with there. 8.8cm^2/m, is it in one direction or also in the mesh? I found this table, for example:
Would a mesh of, for example, 10X175 here provide with 4.49*2 = 8.98cm^2/m and work well as reinforcement amount then?
That's correct. If you're going to use 10 mm iron, you should decrease the bar spacing to 75 mm.
And does 10mm iron mean using free-standing iron placed 75mm apart in just one direction vs mesh, which is in 2 directions? Maybe a silly question, but you don't want to make a mistake here
H = thickness of the slab in mm
SPV = Span length in a section. In your case, it can be 5.4 m x 2.
As = amount of reinforcement in the form of support reinforcement (cm2/m), so 8.7 is the reinforcement 8.7 cm2/m.
The numbers in parentheses indicate the span length and support reinforcement with a suspended ceiling.
Note that the spans etc. are without field reinforcement.
Trying to get a bit wiser on peva/combideck.
When you write H = Thickness of the slab, does it refer to the bottom or the top of the composite sheet?
Click here to reply
Vi vill skicka notiser för ämnen du bevakar och händelser som berör dig.
