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[DJ_Critterus]

Originally Posted by LATB

That is obviously not a question. That my friend is a little forum ribbing.

Ribbed for your pleasure?

[LATB]

Originally Posted by DJ_Critterus

Ribbed for your pleasure?

[Yadkin]

Originally Posted by LATB

That is obviously not a question. That my friend is a little forum ribbing.

"Reaturd/ Contractor/ Wannabee Farmer is never RONG."

[LATB]

Originally Posted by Yadkin

"Reaturd/ Contractor/ Wannabee Farmer is never RONG."

Retired contractor. Semi-active Realtor. Technically a tree farmer. And RONG on many occasions...just ask my wife.

[GTOguy]

Yadkin has admitted to being wrong-o on occasion. So has Lars.

There is nothing to argue about here. You are both hard-headed stubborn squares.

[Yadkin]

Originally Posted by GTOguy

Yadkin has admitted to being wrong-o on occasion. So has Lars.

There is nothing to argue about here. You are both hard-headed stubborn squares.

Go jump off the LA pier, ya hippy.

[LATB]

Originally Posted by GTOguy

Yadkin has admitted to being wrong-o on occasion. So has Lars.

There is nothing to argue about here. You are both hard-headed stubborn squares.

Yes but his is 1/8” off. Does that make it a parallelogram?

[Yadkin]

Originally Posted by LATB

Yes but his is 1/8” off. Does that make it a parallelogram?

I get the ongoing ribbing for my drafting error, but the fact is a standard 8x16 CMU is 3/8" shy in all three dimensions. The 3/8" is for mortar thickness. So a mason working precisely will make a wall 3/8" shorter in all three directions...

Then there is the "1/2-inch" OSB sheathing which is commonly sold as 7/16" with an actual thickness closer to 13/32"....

I normally detail a foundation wall section so that the sill plate is flush with the outside edge of the masonry. That lets the sheathing overhang the foundation wall to reduce the potential for moisture wicking. That has the effect of enlarging the building plan dimensions by 7/16"...

All which is ignored by everyone involved.

Funny business, building construction.

[GTOguy]

Originally Posted by Yadkin

Go jump off the LA pier, ya hippy.

*Hippie

Dad lived in a commune in 1969-70 and my brother and I suffered for it.

Have been disgusted with everything hippie ever since. Probably why I'm conservative. Bathing and toilet paper and red meat are GOOD things.

[LATB]

Originally Posted by Yadkin

I get the ongoing ribbing for my drafting error, but the fact is a standard 8x16 CMU is 3/8" shy in all three dimensions. The 3/8" is for mortar thickness. So a mason working precisely will make a wall 3/8" shorter in all three directions...

Then there is the "1/2-inch" OSB sheathing which is commonly sold as 7/16" with an actual thickness closer to 13/32"....

I normally detail a foundation wall section so that the sill plate is flush with the outside edge of the masonry. That lets the sheathing overhang the foundation wall to reduce the potential for moisture wicking. That has the effect of enlarging the building plan dimensions by 7/16"...

All which is ignored by everyone involved.

Funny business, building construction.

Holy crap there's a lot to unpack there...

Lemme finish my coffee and maybe I'll give it a go.

[GTOguy]

Originally Posted by LATB

Holy crap there's a lot to unpack there...

Lemme finish my coffee and maybe I'll give it a go.

[Yadkin]

Originally Posted by LATB

Holy crap there's a lot to unpack there...

Lemme finish my coffee and maybe I'll give it a go.

[MadInNc]

Originally Posted by Yadkin

Congrats, ya found a missing 1/8”. Messican laborers don’t GAF

[Yadkin]

Originally Posted by MadInNc

Congrats, ya found a missing 1/8”. Messican laborers don’t GAF

*3/8", or extra 7/16".

Originally Posted by Yadkin

All which is ignored by everyone involved.

[LATB]

Here ya go. For your entertainment and enlightenment.
Enjoy.

Originally Posted by Yadkin

I get the ongoing ribbing for my drafting error,

Your post could have ended right there.

Originally Posted by Yadkin

but the fact is a standard 8x16 CMU is 3/8" shy in all three dimensions. The 3/8" is for mortar thickness.

NSS (no shit sherlock)

Originally Posted by Yadkin

So a mason working precisely will make a wall 3/8" shorter in all three directions...

Absolutely incorrect. The mason will build to the building dimensions. Usually there are cut blocks necessary to meet the dimension, so the fact that mortar makes up the dimension is moot. Additionally on this topic, masons will often squeeze or stretch the mortar joints to get the layout to work to the dimension. Only with decorative CMU this is more critical, but they still do it.

Originally Posted by Yadkin

Then there is the "1/2-inch" OSB sheathing which is commonly sold as 7/16" with an actual thickness closer to 13/32"....

NSS 2.0

Originally Posted by Yadkin

I normally detail a foundation wall section so that the sill plate is flush with the outside edge of the masonry.

As are most residential plans. Commercial details are often more complicated.

Originally Posted by Yadkin

That lets the sheathing overhang the foundation wall to reduce the potential for moisture wicking.

NSS 3.0
(we add a layer of poly attached to the wall studs from a 12" roll that spans the bottom of the wall and the top of the foundation, before the wall sheathing. This adds in keeping any moisture that forms on the bottom of the sheathing from getting to the bottom of the wall and sill plate.

Originally Posted by Yadkin

That has the effect of enlarging the building plan dimensions by 7/16"...

Incorrect. It enlarges the building, not the building plan. And that's the point. Most plans are dimensioned from the foundation. Sheathing, siding, and even brick are in addition to the building plan (some plans will call out the overall including brick but that is rare and usually ends up different and moot anyway). But they never call out the overall including sheathing, or finishes (siding, stone, or stucco, etc.)
The reason is, finishes vary. Even brick varies. Only the highest level plans would ever call out the finish dimensions. Typically because at the time of plans (and even contract) these finishes have not been selected.

Originally Posted by Yadkin

All which is ignored by everyone involved.

Not ignored by me and other good contractors. Frankly tracking and anticipating finishes while doing framing/structural/foundation work is exactly what separates the good from the bad. An experienced eye can always tell if finishes wee not considered during the early stages of construction.
The word "afterthought" comes to mind.

Originally Posted by Yadkin

Funny business, building construction.

Served me well for 50+ years.

[Yadkin]

Originally Posted by LATB

Absolutely incorrect. The mason will build to the building dimensions.

Either your reading comprehension is dismal or you purposefully misread my statement.

Incorrect. It enlarges the building, not the building plan.

Plan dimensions, as in viewed from above, not building plan. Again, reading comprehension issues or purposeful misrepresentation.

[/QUOTE]

[LATB]

Originally Posted by Yadkin

Either your reading comprehension is dismal or you purposefully misread my statement.

No misread. You said "will make a wall 3/8" shorter in all three directions..."
He absolutely will build the wall to the plan dimensions regardless of the CMU dimension.

Originally Posted by Yadkin

Plan dimensions, as in viewed from above, not building plan. Again, reading comprehension issues or purposeful misrepresentation.

Of course the plan is as viewed from above. The point is the overall building dimension will be different (larger than) the plan dimensions. Because of finishes.

A brick home, a siding home, a stone or stucco home, using the exact same floor plan...will have the same foundation plan dimensions.

It is also why subcontractors who quote based on square footage do so by building plan, not overall dimensions. A framer for example is not getting paid for the additional square footage with the brick added.

A 30' x 40' rectangle home is 1200 sq ft. That's the foundation dimensions and the framing dimensions. Add sheathing and finishes and it's still a 1200 sq ft home. The mason is going to build to the 30' and 40' dimensions, regardless of the CMU dimensions.

[Yadkin]

Originally Posted by LATB

No misread. You said "will make a wall 3/8" shorter in all three directions..."

Selective quoting now.

[GTOguy]

Are you sure you guys aren't siblings? You sure argue/fight/bicker like you are.

In any case, I heartily approve.

[LATB]

Originally Posted by Yadkin

Selective quoting now.

Ok…

So a mason working precisely will make a wall 3/8" shorter in all three directions...

A mason “will make a wall” to the plan dimensions. Not 3/8” shorter. Of course you know this and are now in trolling mode.