Comfort is often determined by the shape of the backrest. ... Backrest angle ... furniture then you could try the sitting and standing and chair sections of AskSARA.
Biomechanics of Sitting - depending on chair and posture, some proportion of ... Sacrum - Upper surface of sacrum is at an angle to the horizontal plane. ... Seat Angle - Positive seat angle helps user to maintain good contact with backrest.
As the chair back angle increases, the seat should be tilted further backward to prevent forward sliding and lowered to ... a backrest height of 9 to 11 inches,.
Positioning your backrest angle is a balancing act. ... The lumbar support in the chair should fit the small of your back; if it's positioned too low, it will hit your...
... designing a chair but struggling with determining the dimensions and angles ... and bottom of the lower backrest, or curve out the lower 4–8" of the backrest.
I have to admit that coming up with the bench design I describe in this article was ... The secret to a comfortable bench is getting the height and the angles right.