Drawing Standards for Wood Framing

[X4vier]

Hi,
I've found a closed thread where were discussed the drawing standard in general.
I reopen a similar one for try to conclude about that is the typical (or more common) stardard for wood framing.
The options were:
1. For a framing plan the section is cut just below the floor looking up. That way, all the supporting beams are shown as solid lines and load bearing walls and their openings are shown clearly
2. For the same plan the section is cut above the floor looking down. That way the supporting beams and walls are shown as dashed lines.

Please, can you indicated if the standard change for foundation plans? O do you apply the same that for floor or roof framing?

Thanks a lot.

 

[jayrod12]

Always just above the floor looking down. Looking up is a reflected framing plan.

That being said, for some reason in our office we still show beams and walls as solid lines in most cases, unless there's a cantilevered portion of floor framing over a beam/wall.

 

[phamENG]

There is no set standard for this. It varies by region and personal preference.

I typically show walls below either faded or dashed, and usually only bearing walls. So my framing plan shows the framing at this level and what is supporting it.

For foundation plan, it depends on the type of foundation and how crowded the plan is. If it's a fairly simple plan with a slab on grade, I may show footings and slab together. If it's congested, I may do a separate slab plan. For residences on a a crawl, simple plans first floor and foundation go together, but on large/complex plans I'll do a foundation plan showing and dimensioning footings and piers, and a floor framing plan showing girders and joists with the piers faded below.

 

[dik]

#1 was more common 50 years back and I haven't seen a 'reflected' plan in decades... and it was for 'real' buildings, not just housing.

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

[atrizzy]

We show, as all of the responses so far, the floor framing 'above' the floor plan that is shown. I agree that generally it's 'just above the floor looking down' except that the walls and posts supporting said framing we show as solid lines, and those above we show as hidden.

After all, wood floors are framed from below, so what's important for the builder is the floor overhead of the level they're standing on, as well as the walls and posts supporting said floor.

 

[phamENG]

While I agree with atrizzy, there are some things that are important for the floor while they're building it. I'll often show doubled joists and posts above/point loads to make sure blocking and other important load path items get picked up.

 

[atrizzy]

pham, no argument from me that items such as point loads from above should be shown.

 

[dik]

At the time, the reason for the reflected floor was that it highlighted the supporting structure.

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

[Aesur]

We tend to cut the plans at about 1' above the floor level and show the following:
1. Walls above solid lines
2. Walls below hidden line, except the solid controls if there are walls above as well.
3. Beams are shown as solid lines.
4. Lintels are phantom lines.
5. Ledgers are phantom lines offset from the wall.
6. Trusses are solid lines.
7. Joists are phantom lines.

Foundation plans are cut a 1' above the slab, you will see walls as solid lines, openings in walls, footings are hidden lines, stem walls across openings are hidden lines, window openings above the 1' line are shown in a faint solid lines in the walls to help with locations of shear walls and holdowns, non structural walls are sometimes shown as faint lines, however I tend to only show these walls on residential projects and not commercial.

I'm sure I'm forgetting something here, but this is a quick concept of what we do, but as others have said, there is no industry standard.

 

[dik]

I use similar... but for all work (I don't do many houses), except
5. Ledgers, if shown, are hidden lines.
6. Trusses are centrelines, but heavier.
7. Joists, don't normally show them, but if they are shown, then as centrelines, but lighter.

and cut location is just above the floor (1' is OK)

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

[RHTPE]

IMHO, draw it as the framer will see it as it's built.
I would consider it as a horizontal section, looking down, cut just a fraction below the floor sheathing.

Ralph
Structures Consulting
Northeast USA