interpreting architectural plan re floor joists

[rjm2k]

I was left the plans for my house by the previous owner, in them they show "span of floor joists" as a Z shape, how do I interpret this? In some rooms the Z is shown in a different direction to the adjacent room, does this mean the joists go the other way?

eg

View media item 47675
Thanks

 

[theoldun]

Yes.
Regards oldun

 

[rjm2k]

thanks, so is it just there to show the direction, or is there more info such as measuring the length of the line give the span/spacing? why are the ends at an angle, just convention?

 

[theoldun]

Just to show direction.
Nothing to do with measurement.
Kack handed way of drawing an arrow on end of the line.
We have a SE who we feel sure gets a perverted pleasure doing it this way.
Regards oldun

 

[^woody^]

It's just an arrow, nothing else

 

[rjm2k]

ok thanks