Grid Lines & Storey Levels
Being able to navigate through a plan and quickly understand what you are looking at is an important skill. Especially when a crew is on site and they need to figure things out. Grid lines and storey levels are another tool in the plan to help navigate.
Grid Lines in Plan View
Grid lines are imaginary lines that are used in a plan to help you see where you are looking quickly. They are visible on all levels and in all views.
They are numbered horizontally and lettered vertically.
They can be set up in a rigid grid, say at 4' intervals for example. But we prefer to place them along the outside face of major structural elements, such as the outside face of the foundation, rim joist, stud walls and roof framing.
This is how builders need to think and so it makes sense to us to keep a consistency between design and construction.
Grid Lines in Section View
These same grid lines are visible in all views so you can quickly relate your location from a floor plan to a section to an elevation.
The example to the left shows a close up of grid lines B, C & D. If we look at the plan views in #1, we can see where these gridlines are on the floor plan. And so pretty quickly we can orient ourselves while looking at the section view. If on the floor plan, A is north and F is south, then looking at the section tells us that north is to the left and we are looking eastward along the centre of the roof line
Another navigational tool is the use of storey levels. They help us orient how things relate to each other in a vertical sense, giving us a vertical dimension from the storey below.
We prefer to set our storey levels relative to major structural elements such as tops of footings, or the topside of sub-floors. This again is a nod to the builders as these are relevant points of measurement they will be working from as they construct the building.