Riser Height Calculator - Page 7 - AVS Forum | Home Theater Discussions And Reviews
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post #181 of 204 Old 02-03-2016, 11:50 AM
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Originally Posted by KanosWRX View Post
Thanks for sharing!

Been looking for something like this for a while

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post #182 of 204 Old 08-31-2016, 09:42 AM
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I understand this link is for height of the riser, but wanted to ask if 5 ft depth is enough if I want to put a sofa (sleek and not bulky) instead of recliners? I have limited space (total 18ft deep room).
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post #183 of 204 Old 08-31-2016, 10:46 AM
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Quote:
Originally Posted by busybe View Post
I understand this link is for height of the riser, but wanted to ask if 5 ft depth is enough if I want to put a sofa (sleek and not bulky) instead of recliners? I have limited space (total 18ft deep room).
not sure I understand, 5ft depth? please explain where this is measured from (e.g. ground to top back of sofa?)

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post #184 of 204 Old 08-31-2016, 11:47 AM
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Originally Posted by tradewinds View Post
not sure I understand, 5ft depth? please explain where this is measured from (e.g. ground to top back of sofa?)
Sorry, I want to build a riser for 2nd row seating. Since I have limited space (from screen wall to the opposite wall, total 18 ft), I was thinking to build a riser and put sofa instead of recliners to save space. So, if I am thinking to put sofa on the riser, how deep should the riser be from one end to the other? Would I be ok with 5ft or even less?
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post #185 of 204 Old 08-31-2016, 11:59 AM
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Quote:
Originally Posted by busybe View Post
Sorry, I want to build a riser for 2nd row seating. Since I have limited space (from screen wall to the opposite wall, total 18 ft), I was thinking to build a riser and put sofa instead of recliners to save space. So, if I am thinking to put sofa on the riser, how deep should the riser be from one end to the other? Would I be ok with 5ft or even less?
so, you're asking about the width of the riser? If facing the screen, the length would be perpendicular, the width would be the distance from the backwall, in that case what is the width of the sofa? I think you would want to measure that first and add about two feet (maybe slightly less if space is a concern)

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post #186 of 204 Old 08-31-2016, 12:16 PM
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Originally Posted by tradewinds View Post
so, you're asking about the width of the riser? If facing the screen, the length would be perpendicular, the width would be the distance from the backwall, in that case what is the width of the sofa? I think you would want to measure that first and add about two feet (maybe slightly less if space is a concern)
Thank you! The sofa will be roughly 30-32" in depth(seat) and roughly 81" wide. So, I believe you are saying add roughly 24" to 30"? This 24" will be the leg room/space for people to walk out of the couch. correct?
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post #187 of 204 Old 08-31-2016, 12:19 PM
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Quote:
Originally Posted by busybe View Post
Thank you! The sofa will be roughly 30-32" in depth(seat) and roughly 81" wide. So, I believe you are saying add roughly 24" to 30"? This 24" will be the leg room/space for people to walk out of the couch. correct?
correct, obviously give it as much as you can....then once that is done you can then calculate the height to clear the front row (top of people's head) based on the screen height to know how high to build the riser.
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post #188 of 204 Old 08-31-2016, 12:34 PM
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Quote:
Originally Posted by busybe View Post
Thank you! The sofa will be roughly 30-32" in depth(seat) and roughly 81" wide. So, I believe you are saying add roughly 24" to 30"? This 24" will be the leg room/space for people to walk out of the couch. correct?
Sit in the couch in your living room, and put a piece of tape 24-30" in front of it... see if walking in front if it, particularly with someone seated, is comfortable enough with 24" of space. I would think with a 30-32" deep couch, if you did a 5' deep riser, that gives you 28-30" of space, would probably be okay.
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post #189 of 204 Old 08-31-2016, 12:47 PM
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Thank you kmhvball and tradewinds
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post #190 of 204 Old 09-07-2016, 03:23 PM
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Is there a rule of thumb for staggered seating (front row has 3 seats, second row is 2)? My riser for the second row will be 12", but as the second row seats are staggered, and the heads will fall between the heads of the front row, the second row doesn't have to be so high does it?

I just wondered if there was a percentage reduction, though part of me feels that although the view ahead will be unobstructed, the heads will still obstruct off at the sides and the riser is still better off as if the seats were aligned and not staggered.

Anyone have experience of staggered seating on a riser?

Cheers

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post #191 of 204 Old 09-08-2016, 05:23 AM
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My seats are staggered some.. I have 4 in front structured |O^00^0| and 5 in back, structured |O|OOO|0|. In my case, my seat backs are higher than the top of the head, so, where the head is doesn't matter.

The outer two seats can kind of look through the wedge arms of the first row... but, I don't rely on that. I would have to go back and look, but I think my 2nd row is about 14", and it becomes a very close line of site... I can just see the bottom of the screen over the top of the front row when the 2nd row is reclined and 1st row is upright (so, easier line of site if both are reclined).

The riser height is also a function of the bottom of screen height... mine is nearly 30" up from the floor, the lower the screen starts from the floor - the higher the riser should be. Additionally, the distance from Screen to 1st row to 2nd row is also important. My screen is 'close' to my first row, it is about 8 or 9' away, and my second row is 6'9" behind. The closer to the screen, the higher the riser needs to be.

Conceptually though, if your seat backs are a bit lower, then I think your reasoning sounds good, but I can't say with great confidence whether it would work or not.
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post #192 of 204 Old 09-08-2016, 03:26 PM
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Thanks for the reply.

I guess the only way to find out for sure is to try the lower riser and see how it works out at say 8 inches, and then increase it to the calculated height of 12 inches if I don't think it's good enough. I'll need to use a couple of people or cardboard cut outs to simulate how it would look with real people at the lower riser height though, just to be sure.

I wonder if it's worth me reposting this in the ain part of the forum for more feedback in the mean time.

Cheers

Gary

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post #193 of 204 Old 02-22-2017, 10:22 AM
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Quote:
Originally Posted by busybe View Post
Sorry, I want to build a riser for 2nd row seating. Since I have limited space (from screen wall to the opposite wall, total 18 ft), I was thinking to build a riser and put sofa instead of recliners to save space. So, if I am thinking to put sofa on the riser, how deep should the riser be from one end to the other? Would I be ok with 5ft or even less?
Thanks to all who guided me to build my riser. I am quite pleased with how it turned out, however, someone with similar room dimensions and theater chairs, you can do with roughly 42" wide instead of 52"(my riser's width). I could have saved roughly 10" to have my first row even farther. But still not bad..

My riser's dimension - 96inchesx 52inches x 13 inches . Seats are on top of 2x8 (additional height as they sit lower than normal chairs)



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post #194 of 204 Old 02-22-2017, 07:25 PM
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In the end I went with an 11inch riser and staggered seating in the second row. I'm please with how it turned out and the seating distances are 2 x screen height for the front row (for the CIH set up) and 2.9xSH for the second.

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post #195 of 204 Old 04-21-2017, 04:19 AM
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My Riser height is coming to be Zero by this calculation ....lol , can some one tell me where I am being wrong. Below is how I calculated

S=Screen height from the floor :16
H1=Height of seated front row viewers top of head :40
E1=Height of seated rear row viewers eyes (no riser) :40
D1=Screen to front row viewers eyes :156
D2=Screen to back row viewers eyes :160


H1-S=V1 :24
V1/D1=R :0.153846154
R*D2=V2 :24.61538462
V2+S=E2 :40.61538462
E2-E1=Riser Height :0.615384615


All values in inches. So basically its zero as my E2 value and E1 value is coming same ????
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post #196 of 204 Old 04-24-2017, 04:04 PM
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Originally Posted by sam9s View Post
My Riser height is coming to be Zero by this calculation ....lol , can some one tell me where I am being wrong. Below is how I calculated

S=Screen height from the floor :16
H1=Height of seated front row viewers top of head :40
E1=Height of seated rear row viewers eyes (no riser) :40
D1=Screen to front row viewers eyes :156
D2=Screen to back row viewers eyes :160


H1-S=V1 :24
V1/D1=R :0.153846154
R*D2=V2 :24.61538462
V2+S=E2 :40.61538462
E2-E1=Riser Height :0.615384615


All values in inches. So basically its zero as my E2 value and E1 value is coming same ????
Your H1 and E1 should not be the same. One is the top of the head, one is eyes. probably a good 4-6" difference there. Also D1 and D2 are way too close together. Normally you have about 6.5' between rows, so 156 and then something like 234.

edit: So adjusting, I got a riser height of around 16" for you.
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post #197 of 204 Old 04-25-2017, 01:24 AM
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Originally Posted by sigma722 View Post
Your H1 and E1 should not be the same. One is the top of the head, one is eyes. probably a good 4-6" difference there. Also, D1 and D2 are way too close together. Normally you have about 6.5' between rows, so 156 and then something like 234.

edit: So adjusting, I got a riser height of around 16" for you.
Ok yes D1 and D2 was the culprit, stupid mistake. There is a 5' distance between the first row and second. So id D1 is 156" D2 will be around 216" (18'x12). Keeping 4" difference between H1 and E1, the Riser height is coming to 13", .....woh! more than 1 feet, isn't that too high. My ceiling height is 8' (96"). The rear person would be at 50", too close to the ceiling .... wouldn't that ruin the Atmos experience for the rear seater. I sill feel there is something missing. Maybe I have to raise the screen height from the floor.

I guess there is no other way to actually create the riser and then check. I will start with 8-9" Riser and then since its woodwork can add a layer to raise the height if needed later before the final carpeting is done. That is the only way I can think, to move ahead...

Thanks for the assistance though, appreciate that.

Regards
Sammy
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post #198 of 204 Old 04-25-2017, 07:35 AM
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Originally Posted by sam9s View Post
Ok yes D1 and D2 was the culprit, stupid mistake. There is a 5' distance between the first row and second. So id D1 is 156" D2 will be around 216" (18'x12). Keeping 4" difference between H1 and E1, the Riser height is coming to 13", .....woh! more than 1 feet, isn't that too high. My ceiling height is 8' (96"). The rear person would be at 50", too close to the ceiling .... wouldn't that ruin the Atmos experience for the rear seater. I sill feel there is something missing. Maybe I have to raise the screen height from the floor.

I guess there is no other way to actually create the riser and then check. I will start with 8-9" Riser and then since its woodwork can add a layer to raise the height if needed later before the final carpeting is done. That is the only way I can think, to move ahead...

Thanks for the assistance though, appreciate that.

Regards
Sammy
One thing that you can do is just do a base riser that is 7" or so, and then do the next 6-7" portion of the riser only where the seating is, with a little lip in front of the seating for feet that aren't reclined. Also, I think that 6'9 (even down to 6'6") is plenty high for people to get around in general for a second row personally. It's not like you are generally standing around socializing in the back row (unless you are planning one of those bar second rows, but even then, you likely don't need a riser) - generally you are just getting into or out of seating.
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post #199 of 204 Old 04-26-2017, 02:05 AM
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Using your numbers:
If E1 was 36" with a 13" riser, then E2 would be 49". Yes, 47" to the the ceiling from your eyes/ears, 6' 11" from the riser to the ceiling when standing. This is why you should start with a 9' plus ceiling height when possible. The Atmos effect will be what it is.

13" riser seems about right, there is a step in between at 7 1/2" of course. The step would be in the aisle only. Keep the entire riser at the same height or it will be difficult getting into the elevated seat and a tripping hazard in the dark. If your seating is reclining, make sure there is enough spacing for the foot support to come up, otherwise you will have to compromise on the viewing distance for the front row to the screen (moving the front row forward) and/or back row to the back wall (moving the back row closer to the wall and the rear speakers). [Where are YOU going to sit? ].

With out the the luxury of unlimited dimensions, putting more seats or rows in a room than what the room can mathematically accommodate will always have compromises. You have to make the decision on what compromises you can live with.

Good luck!

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post #200 of 204 Old 04-26-2017, 11:43 AM
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Quote:
Originally Posted by sam9s View Post
... the Riser height is coming to 13", .....woh! more than 1 feet, isn't that too high.
I have two 'seated' rows in my theater and my second row is 13" taller than the first, and is just barely adequate and my screen starts higher than yours, which then requires a lower 2nd row. As another posted suggested, I have a 'two height' platform... the very rear of the room (where the entrance is) and around the sides to the front row is 8" inches.. and then in the middle of the room where my 2nd row seats are, it is 13". I have lights under the lip of the center riser to help with safety...
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post #201 of 204 Old 01-31-2019, 10:44 PM
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Riser Height Calculator

I just bought 12 of these theater seats:

https://www.equip-bid.com/auction/48...m/32?offset=32




I had only planned on buying 8 seats for two rows of four, or perhaps 9 seats for 3 rows of three, but ended up winning more seats than was planned.


Question: Is 3 rows of 4 feasible with a low riser build, given my limitation of a HVAC dropdown height at 81"?


My screen material starts at 27" off the ground.
The front row of seats is currently about 11 feet back from the 144" cinema scope screen (16x9 equivalent of 152")
The new seats are 42" tall by 34" deep.
My current seats are about the same height and are a good general reference for the size of the AMC chairs I bought. The new charirs do NOT have leg rests, so I could possibly build the tiers shallower front to back than typical if necessary.


I'm curious for input from folk who have built shorter risers and if they were happy with them?















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post #202 of 204 Old 02-01-2019, 07:03 AM
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I'm using commercial seats too, but mine are probably a little smaller than yours - you may be able to google the seats info for placement etc. I think they recommend a minimum of 12 inches between seat back and flipped down seat with 18+ being considered 'generous'. You may get a back to back spacing guideline if you can find the install info.

If you don't want the riser taller than say 12", you can always offset the seating so the heads of the second row are looking between the two seats directly in front, as that helps reduce the amount of obstruction. A row of 5 in front and 4 behind (and 3 behind that) for example.

I've added a pic of the kind of guidelines you can find so you get a bit of an idea of how you may want to approach spacing yours.
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Quote:
Originally Posted by elmalloc
Who says Cameron is "right" and why do we care about him so much - lol!

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post #203 of 204 Old 02-06-2019, 08:48 AM
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@Archaea , when I looked at the same seats before you I measured the distance of the isle row width and it was around 50" or so. I think 2 rows would fit, its just how much head room will you have in the back row.

I have been using this calculator to figure out how big of a riser I may need. For the second row seat height I go with about 4 to 5 inches lower if someone shorter is behind me.

http://www.diymovierooms.com/Content/RiserHeight

I bet you could get by with 55" to 60' wide risers. Not sure on how high they need to be to see over the other rows. I am available to help when you need it by the way.

So did the seats clean up nice?

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post #204 of 204 Old 08-27-2019, 04:51 AM
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Ok, so I need a bit of help.

Right now I have a "theater-in-progress". Painted the walls a dark blue, put in some dark carpet, and found a 92" TV and some old recliners and a couch. It'll probably be another year before I can remove all the shelving and if I'm LUCKY another year before I can build the room within a room.

We are getting a new couch and chairs and I'm trying to figure out the best place for them, and how to build the riser for the back row.
We are getting:
One Sofa: Ryker Power Reclining Sofa with Drop Table (85"w x 40"d x 42.5"h)
One Recliner: Ryker Power Recliner (37"w x 40"d x 42.5"h)
Two Gliders: Steel Glider Power Recliner (43"w x 43"d x 42"h)

Right now I have part of a sectional in the front row. The end of the chaise lines up with the door.
We are thinking about replacing that with the Sofa, but move it up so that the front lines up with the door. That puts the front of the sofa about 6' 9" from the TV.
We want to replace the two recliners we have now with the single recliner and two gliders.

As it stands now the sectional is quite low, so if no one is sitting on it, I can JUST see the bottom of the screen. The new sofa is about 6" higher, so it will cut off the bottom of the screen from the back row (which is where I sit).
I used the calculator and it said I need a 16" riser. I'm in a 100yr old house, so the basement ceiling is pretty low. At 16" I'd JUST be scufffing my head on the ceiling. I figure I'd do a 14" to get the 7" step heights and only bump my head with thick shoes on

My biggest issue is that the door to my office sits RIGHT in the middle of the back wall. I obviously need to get to it since I work from home. I don't mind a thinner (24" walkway) or other minor inconvenience, but I will have a door opening out into the theater. It doesn't need to open ALL the way, it can open 90 degrees.

SOOOO. Where is the best placement for the 2nd row chairs, and what shape to build the riser?

I attached some images of my existing setup, and a sketch of the room with dimensions.
I also took a shot at laying everything out with the riser. Each square is 3". I thought about a foot behind the sofa before the riser was good, and a foot behind the 2nd row recliners seemed reasonable. That left me 3' walkway on the sides and back.
I added a 14"w x 12"d step with enough room from it to the recliner that I won't accidentally step off the recliner onto the step.

Any there some plans for basic risers?
Since I HOPE to be changing things up in about 2 years, I'd prefer not to haul a crapload of sand down there and then have to figure out what to do with it later. Sound insulation work?

THANKS!!
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