White ash bech seat design and construction asdvice needed

[RobTro]

I am going to make a bench seat for the entrance for our home. It will be more to place things on as you come home and leave than to sit on, but will be used in that situation as well. Here are some pics of the design concept.

http://www.sawmillcreek.org/attachment.php?attachmentid=234403&d=1339592860&thumb=1 (http://www.sawmillcreek.org/attachment.php?attachmentid=234403&d=1339592860)http://www.sawmillcreek.org/attachment.php?attachmentid=234402&d=1339592853&thumb=1 (http://www.sawmillcreek.org/attachment.php?attachmentid=234402&d=1339592853)http://www.sawmillcreek.org/attachment.php?attachmentid=234400&d=1339592840&thumb=1 (http://www.sawmillcreek.org/attachment.php?attachmentid=234400&d=1339592840)http://www.sawmillcreek.org/attachment.php?attachmentid=234401&d=1339592846&thumb=1 (http://www.sawmillcreek.org/attachment.php?attachmentid=234401&d=1339592846)

The bench will be made from white ash. For the seat I have 6/4 and for the legs I have some 8/4 lumber.

The design:



About 1200mm long and 340mm seat width. Height about 460mm.
Wanted a sort of seat floating above the legs feel, so the stretchers are inset and run under seat members.
I have two stretchers - I figured it would be better for torsional strength than a single stretcher in the middle.


Questions:




What do you think of the overall design and concept?
For the stretchers - what would be the minimum size I can get away with?
Main Stretcher - From 8/4 stock I figured I could get maybe 40 to 45mm square. Would this be too small?
Or should I Look at at using 6/4 and maybe using 30x60mm?
For the top stretcher (?) of the end leg frame, can I use the same square stock as the legs of about 40-45mm or do I need to go to say 30x60mm?


Joinery:




Mortice and tennon for the leg frames and the stretcher to leg frame joints



Seat Connection:

How to connect the seat and the seat supports and the supports to the base?
The seat supports are shown as about 30x30 for a 30mm gap between the seat and the frame. Could be more?
or Should I look at something like 30 wide x 60 high with bridle joints
or Should I look at wider, flatter supports like 60mm wide and 30-35mm thick just fixed by screws?



screw the seat boards to the supports only?
use bridle joints on the supports to set the seat boards into and then screw?
For the supports to the frame-




just screw them on
or bridle joints of say 10 or 15mm and screw or glue?
If bridle joint what depth is needed?


Any comment on design and construction?

Thanks,
Rob

[dr4g0nfly]

Is it just me or are the pictures not showing?

[vk4]

Pic's lead to an AMERICAN Sawmill site/forum.

Jeff
vk4

[RobTro]

212417

Sorry the pics look fine on my computer and I didn't realise it was just a link....
Hope youcan see now.

One concern is strength agaist racking. For looks the smaller square stretchers would be better but should I use the 30x60mm stretcher M&T into a 60mm legs frame stretcher? Or do I need more?

Rob

[Scally]

I like your floating seat design.
the seat looks very smart and neat.

I would go with the 60hx30w stretchers. The height is more important than the thickness.

The flatter square stock sound fine for the end stretchers. Use the shallow bridle joint to hold everything in place. This should give you the look you have in your plan.

The rest looks fine to me.