North Symbol

[Anonymous]

Hi there

I wanted to ask,can this symbol of a  North plan be use on a project with out having a other north symbol on the drawing? Is practicable if i only have one north symbol on a project rite?

can someone help me with this

thanks

[pkolarik]

Are you asking if it's okay to have only that style of north arrow? Or if it's okay to only have a north arrow appear on one sheet of a drawing set?

If it's the latter, we always put a north arrow on every plan view sheet in a project set. There's always the chance that north isn't "up" on various sheets, so placing a north arrow on every plan sheet makes it clear which way is north every time.

[Anonymous]

No i am asking if is ok to have only one north symbol. We tend to put two north symbols on the plans...the one i attached and other one we put above the sheet. I think that is practicable to have only one not two.

[JasonArtley]

Having one symbol for a north arrow is preferred! You want it to be easy to identify on all sheets. 

[jggerth]

Well, depending on _which_ North you are dealing with,,,,  Grid, plan geographic(true), or magnetic.

But as a rule, I would only expect to see one north arrow on a plan sheet, unless there are enlarged drawings on that sheet that have different orientation. 

I would also not expect to see it as part of the drawing title...

[Anonymous]

Is there a rule for that? Only to have one north arrow on a plan sheet?

[JasonArtley]

Well multiple north arrows are preferred if you have multiple views on a sheet. Normally it's one view per sheet, and therefore one north arrow per sheet. I've never seen multiples arrows for true north, geodetic north, etc. They are usually assumed to be rough guides to orient whomever is viewing the plans. 

[Anonymous]

The thing is that we are a firm that works a lot with azimuth angles. I wanted to use a plan north symbol that marks the true north....because we tend to rotate buildings on the sheets. That way the building will be parallel to the sheet. Adding a azimuth angle to the symbol can be confusing.

You can open the attach file so you can have a better view of what i trying to say.

I will like to have all on one symbol...but adding the azimuth angle on the plan north symbol can confuse my clients. So what we are doing is letting the azimuth angle on the north symbol above and marking the true north on the bellow symbol.

[Anonymous]

Do you think this can be a good practice or if you have any better ideas to workout with this issue.

[jggerth]

My first question I guess is what are you basing the coordinate system on? You call out Northings and Eastings along with Lat-Long, but I don't see anything to tell me the basis of those coordinates.

Typically, when I have to show two norths (grid and magnetic) I'll use one symbol, and label the magnetic north, and leave my grid as is. If it's rotated on the plan view, that's fine,  My work is done in model space, where the grid is vertical and building skewed, but the plan on the layour shows the building oriented to the view. 

[jggerth]

Here's an example of a dual north arrow,  The RED is grid north, (and in this case, the facility is slightly skewed to the grid, but would be shown on the sheet as normal to the drawing borders. The YELLOW arrow points to magnetic north and indicates how far off grid and magnetic north are at this location.  (of course the magnetic pole wanders around a  a bit, so it's not taken to a high precision, and may not be even loosely correct in a couple of years)

[Anonymous]

Doesn't help me a lot with my issue. The big question is...can i have two north symbol on a sheet? One that tells me the true north and other that marks me the azimuth angel?

For me is not practicable but upper management is asking me for this....is there a rule for not having two north symbols on a plan sheet.

At my country some are not to quite related to the north symbol and his tree different arrows on the same symbol.

[pkolarik]

The simplest answer is "Yes, you can have two north arrows on a plan view". The architects in our office do so from time to time. They'll have a "North" and "True North" symbol on the drawing.

They're the only discipline in our office that does this;  our civil/surveyors never have more than one north arrow on a drawing. It's always pointing north.

[Anonymous]

So to close this case...there is no rules that states.... not having two north arrows on a plan sheet then.

[gotphish001]

I use this rather than some fancy arrows. It's clear  at a glance and not confusing for people reading plans.

[Anonymous]

Clear as what?

Sorry but I have no idea what that means....

[Anonymous]

It's not all that clear, as nothing tells me _which_ north the grey arrow refers to.  Magenetic?  Grid?  Geographic?  Astronomic?

[pendean]

What industry as you in exactly?

[BeKirra]

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@Anonymous wrote:

Doesn't help me a lot with my issue. The big question is...can i have two north symbol on a sheet? One that tells me the true north and other that marks me the azimuth angel?

For me is not practicable but upper management is asking me for this....is there a rule for not having two north symbols on a plan sheet.

At my country some are not to quite related to the north symbol and his tree different arrows on the same symbol.

---

It sounds like a standardise issue.

IMO below is a basic rule:

1) One north symbol only on your projects - I suggest you setup your company standard.

    It allows readers concentrate on drawing details.

2) Follow consultant firm's rule, if you work for them.

HTH

[jvalaleducation]

Do you have this as a symbol you can share?