I've been studying some plans from major offices. This plans always present different rules when working with grid systems. Some offices place grids on every wall, some don't.
Any resources to know rules on gridlines? What are the rules and logics behind grids systems?
atelier nobody
Apr 23, 20 5:49 pm
As you have observed, there is no "rule" that is widely followed.
My own preference is for grid lines to be used only for centerlines of structural elements, and not even those in the case of buildings with bearing walls and simple spans.
citizen
Apr 23, 20 7:09 pm
One logic behind gridlines is to provide reliable orientation for plan- reading over multiple floors. It also allows for more trustworthy dimensioning.
Assignment of gridlines to elements (usually structural) that don't change plan location from one floor to another can help achieve this orientation despite other elements (room layouts, etc) differing. Atelier nobody rightly points out column centerlines as the most common feature used this way. (Column size may change, but centerline won't.) Other things, such as structural walls (though usually their faces, not centerlines) can be used, too --again, if that feature remains consistent in plan location over multiple floors.
midlander
Apr 23, 20 7:33 pm
thought question: if your columns slope, should the gridlines follow?
i've done both, depending on whether it's a freestanding tower or a smaller portion of a larger complex. like with most things the right answer is whatever will be most clear to the other parties trying to understand the project for bidding and construction.
James Petty
Apr 24, 20 11:24 am
In past projects with sloping columns, if it was near gridline C, we might call it gridline C.1 on the floor above, then C.2 above that, C.3 above that, etc, etc. So it was relative to C (it was always between project gridline C and D). A project should only ever have (1) "Gridline C." Otherwise, something will surely go wrong on site.
curtkram
Apr 23, 20 7:35 pm
just give them a cad file and have them put it in their total station
Ancient Sheds
Apr 23, 20 7:43 pm
center lines of vertical structural elements
question:
left to right grid lines - letters?
top to bottom grid lines - numbers?
ivanmillya
Apr 24, 20 9:07 am
Other way around. Numbers in the y direction, letters in the x direction.
Almosthip
Apr 24, 20 10:37 am
The structural consultant sets the grid lines to center of structural columns / walls withing the building and outside of foundation / grade beams for the exterior of the building
Non Sequitur
Apr 24, 20 10:41 am
I tell my structural P.eng where the girds go and they will offset as required. You can't always do c/l if the same grid serves both a foundation wall and hss, for example.
archanonymous
Apr 24, 20 10:59 am
yeah don't ever let the consultants set grid lines.
archanonymous
Apr 24, 20 11:00 am
on complex projects its really helpful to do alignment section diagrams - i usually pair these with my slab edge plans - so you can see where grid is, what slab edge offset from grid is, and offsets to face of framing, and of course face of glass where there is glazing.
Non Sequitur
Apr 24, 20 11:01 am
^my general rule is "don't ever let the consultants set X" where X is literally anything.
archanonymous
Apr 24, 20 11:08 am
well said.
Almosthip
Apr 24, 20 11:15 am
Well we are a multi disciplinary office, we all work together.
Non Sequitur
Apr 24, 20 11:17 am
^found the problem
midlander
Apr 24, 20 11:20 am
^us too. architects set the grids, but we let the engineers name them.
Almosthip
Apr 24, 20 11:27 am
Ya ..."to be fair".... I am usually the one drafting the arch & struc.
archanonymous
Apr 24, 20 11:34 am
Don't confuse anarchy for collaboration. Your job as the architect is to guide the process and coordinate the design team. Create the framework for everyone to work within. That means setting the grids.
citizen
Apr 24, 20 12:42 pm
If you're gonna name them, name them.
Alfred, Benita, Carl, Daphne, Esteban, Fiona...
This would make for great calls. "Start the framing 18 inches north of Quincy, but make sure to stay clear of ducts coming up next to Rapunzel."
Non Sequitur
Apr 24, 20 12:44 pm
great, now I need to change our office families to allow 9 character grid names. Thanks alot.
I've been studying some plans from major offices. This plans always present different rules when working with grid systems. Some offices place grids on every wall, some don't.
Any resources to know rules on gridlines? What are the rules and logics behind grids systems?
As you have observed, there is no "rule" that is widely followed.
My own preference is for grid lines to be used only for centerlines of structural elements, and not even those in the case of buildings with bearing walls and simple spans.
One logic behind gridlines is to provide reliable orientation for plan- reading over multiple floors. It also allows for more trustworthy dimensioning.
Assignment of gridlines to elements (usually structural) that don't change plan location from one floor to another can help achieve this orientation despite other elements (room layouts, etc) differing. Atelier nobody rightly points out column centerlines as the most common feature used this way. (Column size may change, but centerline won't.) Other things, such as structural walls (though usually their faces, not centerlines) can be used, too --again, if that feature remains consistent in plan location over multiple floors.
thought question: if your columns slope, should the gridlines follow?
i've done both, depending on whether it's a freestanding tower or a smaller portion of a larger complex. like with most things the right answer is whatever will be most clear to the other parties trying to understand the project for bidding and construction.
In past projects with sloping columns, if it was near gridline C, we might call it gridline C.1 on the floor above, then C.2 above that, C.3 above that, etc, etc. So it was relative to C (it was always between project gridline C and D). A project should only ever have (1) "Gridline C." Otherwise, something will surely go wrong on site.
just give them a cad file and have them put it in their total station
center lines of vertical structural elements
question:
left to right grid lines - letters?
top to bottom grid lines - numbers?
Other way around. Numbers in the y direction, letters in the x direction.
The structural consultant sets the grid lines to center of structural columns / walls withing the building and outside of foundation / grade beams for the exterior of the building
I tell my structural P.eng where the girds go and they will offset as required. You can't always do c/l if the same grid serves both a foundation wall and hss, for example.
yeah don't ever let the consultants set grid lines.
on complex projects its really helpful to do alignment section diagrams - i usually pair these with my slab edge plans - so you can see where grid is, what slab edge offset from grid is, and offsets to face of framing, and of course face of glass where there is glazing.
^my general rule is "don't ever let the consultants set X" where X is literally anything.
well said.
Well we are a multi disciplinary office, we all work together.
^found the problem
^us too. architects set the grids, but we let the engineers name them.
Ya ..."to be fair".... I am usually the one drafting the arch & struc.
Don't confuse anarchy for collaboration. Your job as the architect is to guide the process and coordinate the design team. Create the framework for everyone to work within. That means setting the grids.
If you're gonna name them, name them.
Alfred, Benita, Carl, Daphne, Esteban, Fiona...
This would make for great calls. "Start the framing 18 inches north of Quincy, but make sure to stay clear of ducts coming up next to Rapunzel."
great, now I need to change our office families to allow 9 character grid names. Thanks alot.
"I got 16 and 5 from Marcos to face of framing."
laughed my ass off. What about countries?