Affleck House Analysis

[Tom]

This would be a good place to start:

https://archinect.com/people/project/50 ... e/50351206

But according to the framing information that was sent to me( and which is now in the hands of SDR,GDorn,and even posted below) the end of the deck cantilever as built is not a wood "double header". Rather it is a steel channel. She also seems to miss the fact that the floor of Affleck is a suspended concrete slab on steel framing.

[Tom]

FRAMING PLAN



MAIN LEVEL W/ FRAMING IN RED



GROUND LEVEL W/ FRAMING IN RED ABOVE

[g.dorn]

This would be a good place to start:

https://archinect.com/people/project/50 ... e/50351206
<snip>
... the floor of Affleck is a suspended concrete slab on steel.

I wonder how they built this suspended concrete!

is it say 150mm thick cast on the steel ?( with plywood formwork)

or a thin slab - say 50mm slab on cement sheet on timber joists?

The Pew house drawings ( attached below) shows how a brick floor was built over a sheet of (presumably) cement board on timber joists.

Is there an Affleck section detail showing the floor construction?

[Tom]

SDR just asked me if I was sure about the floor being concrete.
The only evidence I really have for that are photographs that exists here and there.
It sure looks like concrete to me.
Which would account for just why there is so much steel in the framing of the suspended floor.
(Not sure but I think I remember that the floor of the deck looks like concrete too)

But I'll get the Monograph off the shelf and see what I can find.

[g.dorn]

Can some one please read the floor levels on the elevation sheet for me and fill in the blanks and confirm my reading please

Parking Datum 0.0
Living Floor 0.0
Bedroom +3.0'
maid room - 8'2"
Roof Terrace datum +9'9"
Shop - 4'8" ?
top of chimney +14'3"

Bedroom ceiling - 10 units
Bedroom FL to Living FL - 4 units
Loggia ceiling - 14 units
living terrace structure depth - 2 units
Living terrace balustrade 4 units + 2 units = 6 units
Living Trellis soffit -9 units
Living ceiling - 12 units
top of roof 15 units
Roof deck structure height - 1 unit
bedroom /loggia roof structure depth - 1 unit
living trellis depth - 1 unit
bedroom windows sill - 4 units

Thus if FFL living to bedroom is 3' = 36" = 900mm and there is 4 units, then each unit is 9 " = 225mm





thanks
Gary

[SDR]

Your numbers (dimensions) are correct.

On the Affleck sheet labeled MAIN LEVEL W/ FRAMING IN RED, above, a note at far left reads "control joint"--an indication of concrete ?

Photo on Affleck terrace showing concrete slab: https://bloximages.chicago2.vip.townnew ... 1200%2C803

The Lloyd Lewis residence, a brick and lapped-board Usonian dated 1939, has a vertical unit of 9", or three brick courses. See note, bottom right.

[g.dorn]

some photos on the web














more photos here
https://www.mlive.com/news/detroit/2015 ... d_wri.html

[g.dorn]

[g.dorn]

SDR thanks for your quick confirmation.
cheers
Gary

[g.dorn]

web page on restoration - mainly retaining walls and brickwork facing the gully
http://www.butters-law.com/affleckhouserestoration.html

[g.dorn]

FYI
numbers in spreadsheet showing conversion to metric
afleck floor heights chart by g dorn, on Flickr

[g.dorn]

link to some pretty basic drawings - presumably as built? held at Library of Congress

says Drawings form Survey HABS MI-120

https://www.loc.gov/resource/hhh.mi0750 ... =1&st=grid

photos and data of works and survey (2017)- not may photos! - mostly text

https://tile.loc.gov/storage-services/m ... 50data.pdf
pg 14
"Structural System, framing: All of the major exterior and some of the interior walls are of load-bearing brick masonry. The wooden walls have a 3/4" plywood core but no rigid framework. The openings, however, have wooden beams and posts as supports. The floor framing consists of transverse and longitudinal wide flange steel beams resting on the load-bearing walls. The use of steel beams also helped Wright achieve the significant lengths of the cantilevered floor. The cantilevered portions of the floor have wooden joists as secondary beams. Crushed rock and concrete mat floors are used on grade as building material for the floor.
The roof was originally designed as a structural deck. Its framing consists of 3/4" plywood decking on top of 2” x 6” wooden rafters spaced approximately at 2’-0” on- center over a 16’-0” span. The rafters rest on load-bearing masonry brick walls.

bricks are 8” x 3-1/2” x 2-15/6”
bedroom wing brickwork is 8” thick = 3-1/2 + 1" cavity +3-1/2

[g.dorn]

Lawrence Tech brochure

https://www.yumpu.com/en/document/read/ ... nological-

And Exhibition booklet - some 115 pages!

https://www.yumpu.com/en/document/read/ ... university

and it has a couple of drawing sheets showing details pg 38/39- but zoom quality is poor - bugger!

downloading it was not better

[g.dorn]

Ive screen shotted from that exhibition catelogue , Sh2 Floor plan + Sections-, Sh 3 Roof Framing plan , + Sh5 Millwork s - fairly poor resolution, but sorta readable.

on Roof Framing plan
There is a a detail which reads

CANTILEVER BEAM -
I Reckon this beam either
a.) goes from the chimney mass, past the loggia trellis to the end of the living room roof
a 2.4m * (8') backspan and 6.0m (20') cantilever - Nice one Taliesin

It would be supporting the Living roof terrace decking
you can see where it would go in the Long Section

or

b.) its projects from the entry brickwork to the Carport roof edge to support the carport roof Framing
so a 2.4m * (8') backspan and 6.0m (20') cantilever - Nice one
carport roof has a dropped ceiling ( according to elevation) to accommodate this beam


Affleck sh 2 floor plan + long section by g dorn, on Flickr


affleck sh3 roof framing by g dorn, on Flickr


Affleck Sh 5 millwork by g dorn, on Flickr

[g.dorn]

There appears to be a steel beam that is over the loggia cupboard to support brickwork over, which forms part of the mass that extends above the roof and rings the workspace upper roof

So one end of this steel beam I guess is bedded into the fire place brickwork, and the other end on the cupboard brickwork?

as far as can tell the section detail on far right side of Roof plan shows this - with workspace roof box gutter behind

and Is this steel beam the hatched line thats on the Mainlevel.jpg sheet