Though you're not required to comply since this is your residence, ADA guidelines might help. For shower stalls, grab bars are installed running horizontally. 33" to 36" above the floor. The shower controls in ADA showers are located 38" to 48" above the floor and within 18" of the door opening.

Thank you both! I cannot decrease the size of the linen closet. The back wall of it will contain the pocket door for what is becoming the adjacent washer and dryer closet--our GC worked out this solution to some issues with the size of the current hall closet that will become the w/d closet. This is a spill over effect of increasing the size of the kitchen by taking over the laundry room so that I will be able to have counterspace next to the range. There is no other place in the house to put the w/d. It's a small old house (and a limited, though not tiny, budget) so some compromises are unavoidable. I had wanted a partial wall rather than glass separating the shower area for easier cleaning. Or a curtain. Dh is adamant about wanting glass because it will be thinner and allow more light through and he "hates" shower curtains. The glass turns out to be cheaper than a tiled wall as an additional point in its favor. I had the toilet and the vanity reversed from the plan I showed in the OP above before primarily because I thought it would "hide" the toilet a little better upon walking into the bathroom. But the suggestion on here was the reverse--as shown above--and my GC thought it would be better to move the wood vanity farther from the curbless shower. I have never had a glass shower wall installed before. I wonder if it is possible to have it installed in a way that would make it relatively easy to remove in the future? So if we needed increased accessibility, the shower glass could be taken down and a shower curtain rod installed. I think the ultimate truth here is that if one of us ends up in a wheelchair permanently we would likely need to move. The kitchen won't be wheelchair accessible, not all the doorways in the house are wide enough to be accessible, etc. But I do think what we are doing now would be helpful if we end up with balance problems, on crutches, needing a cane or walker, etc.

I researched the same question and only found general guidelines (not specs). - Put one vertical bar inside the entrance of the shower near the controls. This provides a handhold as someone steps over the threshold into the shower, or as they step out onto a bath mat. - You usually put another bar horizontally on the far wall at about waist height, or at a 45 degree angle running up the wall toward the controls. Some bars are a combo unit that runs straight across for about a foot or two and then up at 45 degrees. The 45 degree angle is so that you have a handhold at various heights without installing multiple bars. - Consider where elbows and arms are going to be when using the shower. For example, as someone raises their hands to apply shampoo you don't want them hitting their elbow on the bar. - I prefer a simple stainless steel bar, or if it matches your tile better you could use a painted/finished white bar. Rubberized grips would be nice, but I'd be concerned about how well the rubber finish holds up. Inexpensive units may look worn very quickly after continuous water exposure. Bruce

here is my link to my reveal several years ago. http://ths.gardenweb.com/discussions/3333818/my-west-bathroom-reveal-from-project-in-2013-to-2014?n=15 apparently the link in the tread to show my pics doesn't work any longer :/ I'll see what I can do to that. here is the floor with the shower pan. The Hydroban wall moisture barrier is not showing any longer, its under the shower tiles: Read the reveal text that I linked above. It will tell all about everything I used in this bath remodel: Floor with unfinished vanity, across from the shower. There are 2 doors into this room, the one you see here and on the other side of the room facing this door. Its my bathroom hallway, lol: Have to show my laundry center, across from the toilet. My beloved Miele washer and dryer: