setting out time dry lay?

[Ken Bruty]

3,4,5 is 3 lines with measurements with a ratio of 3,4,5 creating a right angle triangle. So for example you have a line 30cm long put a 40 cm piece of string at one end and strike an arc. Then get a 50cm piece of string with a pencil say and strike an arc, where the two arcs intersect above the original 30cm line will give you a perfect right angle. To make the triangle bigger you can have a line say 60cm;80cm;100cm, as long as the ratio is 3,4,5 you will create a perfect right angle, whatever the measurement unit is.

 

[The Legend; Phil Hobson RIP]

Pythagoras, square on the hypotenuse 3/4/5 basic tiling or building formula. Before steel squares, or lasers:smilewinkgrin: The square of the hypotenuse, is equal to the sum of the squares of the other two sides, simples

 

[doug boardley]

...or 5,12, 13,,,,,useful on long corridors. But you still have to decide which wall you're starting from, I quite often dry lay first, not completely on a big floor but most times to get the initial lay-out.

 

[andy8758]

3,4,5 is 3 lines with measurements with a ratio of 3,4,5 creating a right angle triangle. So for example you have a line 30cm long put a 40 cm piece of string at one end and strike an arc. Then get a 50cm piece of string with a pencil say and strike an arc, where the two arcs intersect above the original 30cm line will give you a perfect right angle. To make the triangle bigger you can have a line say 60cm;80cm;100cm, as long as the ratio is 3,4,5 you will create a perfect right angle, whatever the measurement unit is.

I love a simples answer - actually found a use for my o level maths from 1974!! The best tiling advice I have picked up tends to be the basics like this that we should all know but dont care to remember.

 

[The Legend; Phil Hobson RIP]

Outside walls should be square, so I tend to go for that, but still use a staff. I do dry lay small areas too. We all have our own ways, as long as the finished job is good, there is no right or wrong way. Whatever works for us is good.

 

[The D]

lol i am familiar with the 345 square on the hypotenuse just don't know how it will help the op set out his floors ????????*

 

[The Legend; Phil Hobson RIP]

I still rely on the old Lancashire method Dean, rac o' theye, if it looks right, it probably is.:lol::lol:

 

[andy8758]

I still rely on the old Lancashire method Dean, rac o' theye, if it looks right, it probably is.:lol::lol:

Yeah but some of us are getting old and cant see straight even when we wear specs! :yikes:

 

[The Legend; Phil Hobson RIP]

I agree Andy, me being one of us .

 

[Simmo35]

3,4,5? on your tape measure 3ft up your chalk line from centre of the room then 4ft to the right or left of line. Then from the 3ft mark measure 5ft to the 4ft mark, then at the point these two meet put a mark through it to form an x. now string you line through your centre mark through your 345 mark from wall to wall. now you will have 4 right angles a square floor. simples

 

[Simmo35]

I've been doing this for 22year and i still lay tiles out. You just get quicker at it thats all. LOL

 

[The D]

View attachment 33451

3,4,5? on your tape measure 3ft up your chalk line from centre of the room then 4ft to the right or left of line. Then from the 3ft mark measure 5ft to the 4ft mark, then at the point these two meet put a mark through it to form an x. now string you line through your centre mark through your 345 mark from wall to wall. now you will have 4 right angles a square floor. simples

lol*

 

[Yorkshire Tiling Services]

In most cases it is insanity !! Yea the odd small floor yes, but these guys need to know the principle of setting out a floor !!
And the ?????????????? for 3 4 5..... this is the basic principle for finding 90 degree angles....
this will explain better than I can...
Getting Things Square With the World: 3-4-5 Triangles « Mike’s Tech Math Blog

 

[The D]

so can you enlighten me then how dose it help the op set his floor out ?????????????????????????

 

[doug boardley]

...don't think it does Dean, I think we've drifted from original question.