weight on floor joists

jaket · 28 Apr 2015 at 10:43

We are planning a home water birth and we want to have it on our first floor however I just want to be sure that the weight of the pool will be ok on the joists.

Its roughly 3 baths of water in weight (12 adults)

The house is brand new built 2014

Attached is a joist diagram however I am not able to understand it.

http://i.imgur.com/TSUklaK.png

Thanks

jaket · 28 Apr 2015 at 11:30

Thanks for the replies.

Sorry the 12 adults was the rough weight for the larger pool.

Weight when filled 487kg (1,071 lbs) plus mother (75kg)
480 litres of water which is 80% filled.

jaket · 28 Apr 2015 at 15:20

Ground floor is concrete however it doesn't have a bathroom and privacy.

jaket · 28 Apr 2015 at 15:50

Thanks for your comments. I am still waiting for Linden to get back to me, they sent me this and are expecting me to understand it!

I have made a red circle of where the pool will be

https://www.dropbox.com/s/ccibo6uiv5ah34v/Nat Hick-F-Rev2_PTAL comments_09-11-2011.pdf?dl=0

jaket · 28 Apr 2015 at 15:56

The bath will be filled on the day and empty on the day... I don't know about you but it will be messy and I don't want that hanging around!

I thought as much thats why I wanted to check. Hopefully Linden get back to me.

jaket · 28 Apr 2015 at 16:17

So thats 75KG per m2 ?

Answered I think

http://www.convertworld.com/en/mass/Kilonewton.html / http://justplainobvious.blogspot.co.uk/2012/03/how-many-kg-in-kn.html

0.75kn into KG = 76.82KG per metre squared

Pool is

Weight when filled 487kg (1,071 lbs) plus mother (75kg)
480 litres of water which is 80% filled.
165cm x 145cm = 2.39m2

So roughly 209kg per m2

jaket · 28 Apr 2015 at 19:44

None of this makes much sense... I think it's stumped the customer service manager for sure!!

Macca can you explain the weights..... Loading / Dead Load / Live Load

Baring in mind this pool is a birthing pool so will only be up for maybe a day would this be considered Live Load as its only temp? We have a TV Bed/Chest of draws next to each other so surely this is over 150kg thus over the weight limit.
Thanks for comments have made me and wife giggle!

jaket · 28 Apr 2015 at 20:00

So I could use the dead load for pool and live load for people... This would then make sense as that would cover the weight I think....

I don't have the net

jaket · 29 Apr 2015 at 16:37

Haha! I have an update. Contacted Hickson directly and spoke with Jenny who was helpful, she got the following information from there Senior engineer.

"Although it’s probably not a great idea for something like this to be used on the first floor on this instance it looks to be fine.

Total weight (487kg + 100kg = 587kg x 9.81 / 1000 = 5.76kN) weight per meter squared 5.76 / 2.39 = 2.4kN/m²

It is possible to reduce the loading further as the floor is already designed to carry an imposed load of 1.5kN/m² therefore you could subtract this from the load calculated and allow 2.4 – 1.5 = 0.9kN/m²

As the birthing pool will only be used for 24 hours the load can be added as a short term imposed load.

It may be a good idea to sit the pool on a sheet of ply / osb to help spread the load."

So looks like we are good to go.