I framed a riser up using 2x6 perimeters with 2/4s as joists. I had originally planned for a taller riser, with maybe 2x8s or 2x10s, but I scaled back because I didn't like how it would work out with my ceiling heights. I also plan to do a mini riser under the back row of seats to get the sight lines good enough. I mocked my seating distances up in another room using my seats that I already bought and it should work out OK.
I've also started putting together some of my columns, wall paneling, and trim. I cut some strips of MDF for the column sides.
I went with 4.5" deep columns, plus the 3/4 MDF face, so just over 5" from the drywall to the front of a column.
I also have 4 of my column faces cut. I need to make a Lowe's run to get some more MDF for the rest. Here's one getting glued together:
After glue up, I've been flush trim routing the edge of the front face to make it even with the sides. Here is my first column mounted. I have a mess of wiring from all of my lights in this column that will eventually get wired up to a Grafik Eye.
As you can see, there is also a sheet of MDF attached to the bottom half of the wall next to the column. I'm going to use that between each column and do Cinemar-styled panel trim on it. The remaining part of each wall section will eventually get fabric covered wall panels between the columns.
I bought a load of crown and base trim too, and started cutting the crown sections that will go up into the tray ceilings.
Here is a current shot of the screen wall (Linacoustic hung on the front wall too):
In un-theater news, I just finished up a cherry mirror frame for my daughter's bedroom. At least that is one of my many simultaneous projects off my list that normally divert my attention from theater work. I'm really horrible about starting up two new projects before I finish the last one.