# Volume of a house

Discussion in 'Building' started by Notanotherone, 21 Sep 2020.

1. ### Notanotherone

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Hi - how many cubic metres would you say an average terraced house is please?

(I want to get a positive input ventilation thing for my house but it has a loft conversion so having to get one that works for houses up to 150m3

3. ### bernardgreen

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Volume of a room is floor area in metres times ceiling height in metres.

Calculate the volume of each room

add up the volumes of the rooms

4. ### JohnD

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IMO it is easier and more efficient to measure the length and width of the house on the outside or down the hall. I know mine. Height is more easily done by measure one ceiling height downstaies and one upstairs (they may be different)

That gives you a lot less measurement and calculation to do.

In the same way, it is possible, but inefficient, to count sheep by adding up the number of legs and dividing by 4.

Some small terraced houses are about 18ft wide x 25 ft deep, and have two stories 9ft high plus a loft of about half the volume due to pitched roof.

5. ### bennymultifinish

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good plan, they’re a good bit of kit. amazing results.

6. ### Dangee

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I'm sorry for being insulting but surely 7year olds can work out volume.

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7. ### Notanotherone

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Yes I know it's width x depth x height thanks genii! And if it was a small cube on my table I was measuring - I'd be well away!

But I don't know how high my house is, and trying to measure the height of each floor is quite tricky. Also the loft is slanted roof so not as easy as you think.

8. ### Notanotherone

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Ok in metres?

9. ### Notanotherone

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Do you have any experience with them? I really want one, but I would have to get the version to use for flats or where there's a loft conversion but it's not as powerful and I'm wondering if it really can create enough pressure for a whole house.

11. ### bennymultifinish

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only what i’ve seen from houses I work in . our town is full of stone/brick built terraces , poor ventilation , damp and condensation issues on windows etc.
the company manufacturing the kit is very near to us so they’re very popular and i’ve only heard good reviews.

12. ### Notanotherone

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Useful to know thanks.

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Get yourself to Lidl, got an excellent laser tape measure from them for about £12, you can set it for volume calcs.
Or if they've sold out do it the old way with a tape measure and a fag packet. Loft- bet you wish you'd paid attention to trigonometry at school now, 2 measurements and a modern calculator (on your phone) or a set of log tables and job done.

14. ### Notanotherone

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Thank you. I assume as per previous poster we can say the loft space is half volume of cube being slanted on both sides.

15. ### Notanotherone

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So the ground floor is 5.6m x 7.85m x 2.85m = 125m3. The whole house is therefore going to be well over the specified 150m3 capacity of the PIV device. I'll have to get back to them and see what they advise.

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