Field Study #2 September 22, 2011

jumpclaybrainedUrban and Civil

Nov 25, 2013 (3 years and 11 months ago)

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Field Study #2 September 22, 2011















Front of the Stadium


The structural steel framing is a repetitive system

of columns, beams, and vertical trusses

that
carr
y

the
loads of the
seating area. The system contains columns
, beams, diagonal
bracing, and K
and N bracing.






Front of the Stadium








This connection is on the back
side

of the stadium
, and is comprised of

an I
-
Column
bolted to an

I
-

beam

and
a
steel girder.

On the ends of the I
-
beam there are two but
t

plates welded to the
column shaft
.

In between the
double web plate doublers
,

the

be
am is welded to the column and

ha
s
a
single plate attach
ed

with
21

bolts.

The double web plates are an alternative
to shear
(diagonal) stiffeners.
















Along with the
aforementioned
connection
,

a Uniform Force Bracing Connection

is utilized
.
This is a

compound bracing connection with one bracing member connected to a gusset plate
welded to a beam and bolted to a column.



This type of shear connection, in which the beam is connected to the column by
angles, plates ,
or trees fasten
ed to the web of the beam,
is

also called
a
framed connection.

An end clearance
allows for slight inaccuraceies, and make
s

i
t

easier to lower the beam into place during erection.





Front of the Stadium


T
his
connection is
located in the back of the stadium

in a future mechanical equipment room
.
A

steel joist
is welded to

an angle plate
bolted to the CMU

wall.






Front of the Stadium


Depicted in the above images are the r
einforced masonry walls

that utilized
steel reinforcing bars
placed in thickened joints or cavities with a fluid grout mix
that resists

buckling and lateral
forces.

Reinforcing steel bars are fully embedded in
the grout.









T
he corners of the walls
are braced with

I
-
bea
ms, visible above the top of the wall; the I
-
beams
connect to the raker beams supporting the pre
-
cast concrete seating areas above.












T
he beam depicted above is a

raker beam
, an

angled, notched beam

that
will
support stadium
riser units. They typically are made 16 to 24 inches
wide
.





Front of the Stadium









Depicted above are the wood frames for the tilt
-
wall concrete that

will enclose the locker rooms
and support areas for the stadium. The tilt
-
wall is reinforced with a grid of rebar, supported by
rebar chairs.


The steel coloumn is anchor
-
bolted to the foundation at four points.
This is
typical

throughtout
the structure.

Re
bar is cros
s
ed and tied together
just

above the
connection
.
Concrete will
eventually be used to fill in the gap. The concrete’s control joints


used to prevent cracking
caused by expansion and contraction
-

are also visible
.







Front of the Stadium



St
eel tubing will
support

the facility's distinctive exterior skin. Th
e
steel tubes are the first of
many that will connect the concrete
foundations to
the tessellated aluminum

skin
.
















Front of the Stadium












This connection
is
comprised of

vertical bracing
with

a combination of
K and N steel bracing
connected to

gusset plate
s.










Front of the Stadium







B
efore
the

concrete slab

was cast
,
plumbing and

electrical conduit
was placed.