Project formulas

[stihlsawer]

Here are a few tidbits for design.

[GetterDone]

Nice Chart.

As a machinist I recognize some of this Terminology.

The mosture chart put (Us at 9.5 % ?) in our location

Thanks for sharing.

[HopefulSSer]

A thought about table height (mentioned in the download)
https://christopherschwarz.substack.com ... -of-tables

Excerpt:

Almost every modern dining is 30" (760mm) tall. And almost every modern chair has a seat that is 18" (457mm) off the floor. That 12" of difference allows space for the tabletop, the table’s aprons (if it has any) and the sitter’s legs.

Here's the problem with those standards: an 18" seat is too dang high for many sitters. My mother-in-law is about 5'2" (157cm), and every modern chair leaves her feet dangling over the floor like a schoolgirl in an adult chair.

After 10 minutes or so, the chair becomes incredibly uncomfortable as the blood supply to her legs is cut off by the seat, which is compressing her thighs. In the 1990s, I made her a small 4" (100mm)-tall footstool for her dining set that would support her feet.

The solution to this problem, however, is not to build footstools for everyone whose shins are too short.

Instead, the solution is to first lower the standard seat height of dining chairs by 3" (76mm) or so. This will allow shorter people to rest their feet on the floor like regular human beings and sit comfortably for hours. What will a 15" (380mm)-high chair feel like for a tall person? Just fine. Their thighs will be above the seat, and if they want to lower them a bit, they can move their feet forward.

[stihlsawer]

Nice Chart.

As a machinist I recognize some of this Terminology.

The mosture chart put (Us at 9.5 % ?) in our location

Thanks for sharing.

I was wondering where our MC came from...

[stihlsawer]

I was just looking at Chris's research on the Roman workbench.. I agree with him on a slightly shorter chair.

[stihlsawer]

I forgot to mention that sheet is from Highland Working in Atlanta.

[RonKlein]

A thought about table height (mentioned in the download)
https://christopherschwarz.substack.com ... -of-tables

Excerpt:

Almost every modern dining is 30" (760mm) tall. And almost every modern chair has a seat that is 18" (457mm) off the floor. That 12" of difference allows space for the tabletop, the table’s aprons (if it has any) and the sitter’s legs.

Here's the problem with those standards: an 18" seat is too dang high for many sitters. My mother-in-law is about 5'2" (157cm), and every modern chair leaves her feet dangling over the floor like a schoolgirl in an adult chair.

After 10 minutes or so, the chair becomes incredibly uncomfortable as the blood supply to her legs is cut off by the seat, which is compressing her thighs. In the 1990s, I made her a small 4" (100mm)-tall footstool for her dining set that would support her feet.

The solution to this problem, however, is not to build footstools for everyone whose shins are too short.

Instead, the solution is to first lower the standard seat height of dining chairs by 3" (76mm) or so. This will allow shorter people to rest their feet on the floor like regular human beings and sit comfortably for hours. What will a 15" (380mm)-high chair feel like for a tall person? Just fine. Their thighs will be above the seat, and if they want to lower them a bit, they can move their feet forward.

Unfortunately, there is no one solution that fits all. For those of us getting up there in age, getting up from a 15" height chair is nearly impossible without considerable help. Even 18" is not always enough.
Ron

[edma194]

A thought about table height (mentioned in the download)

I think 18" is too too tall. Luckily all our dining room and kitchen chairs are 16" high. I think 16" is typical, not 18".