FRAMEDSTRUCTURE Members: Soriana Álvarez #C. 09-11053 Teresa Tam #C. 09-11034 Ainara Ricchiutti #C....
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Transcript of FRAMEDSTRUCTURE Members: Soriana Álvarez #C. 09-11053 Teresa Tam #C. 09-11034 Ainara Ricchiutti #C....
FRAMED STRUCTURE
Members: Soriana Álvarez #C. 09-11053Teresa Tam #C. 09-11034Ainara Ricchiutti #C. 09-11016
Logical Sequence:
1. Framed Structures
-Introduction: Structural function
Structural types and a definition of framed structure
2. Building components of the structure
3. Structural material-Wood-Concrete -Steel
4. Examples
Structural function
requirements• Physical actions• Mass• Inertia forces •Dimensional changes
• Stable• Resist basic charges• Overload withstand foreseeable• Earthquakes
structural objective• Limiting deformations• Vibrations prevent • The passage of time.
Structural typology
We are refering to its geometry, depending mainly on its use, taking into account the maximum material efficiency, and minimum obstruction space.
Burnham pavilionChicago ILLINOIS
Museum of contemporary cultureLondon ENGLAND
GEOMETRY SPACE
Framed Structure
A framed structure in any material is one that is made stable by a skeleton that is able to stand by itself as a rigid structure without depending on floors or walls to resist deformation. Materials such as wood, steel, and reinforced concrete, which are strong in both tension and compression.
The s
urf
ace
ele
ments
Function is to cover the surface
The constituent elements
Hori
zonta
l lin
ear
ele
ments
For concrete to steel is the width and thickness
Beams
The v
ert
ical
ele
ments
Area and shape.
Str
uct
ura
l m
ate
rial
the tensile modulus elasticity
heavy t
imber
fram
e,
The heavy timber frame, in which large posts, spaced relatively far apart, support
thick floors and roof beams.
In the heavy-timber system, the beams are strong enough to allow the upper story and
roof to project beyond the plane of the ground-floor posts, increasing the space and
weather protection. The members are usually exposed on the exterior.
heavy t
imber
fram
e,
Am
eri
can lig
ht
wood
fram
e (
balloon f
ram
e)
Composed of many small and closely spaced members that could be handled easily and
assembled quickly by nailing instead of by the slow joinery and dowelling of the past.
Construction is similar in the two systems, since they are both based on the post-and-lintel
principle . Posts must rest on a level, waterproof foundation, usually composed of masonry or concrete, on which the sill (base member) is
attached
The li
ght
fram
e The light frame, however, is sheathed
with vertical or horizontal boarding or shingling, which is jointed or overlapped for weather protection. Sheathing helps to brace as well as to protect the frame,
so the frame is not structurally independent as in steel frame
construction. The light frame system has not been significantly improved since its
introduction, and it lags behind other modern techniques
Ste
el fr
am
ing
Steel framing is based on the same principle but is much simplified by the far greater
strength of the material, which provides more rigidity with fewer members. The load-bearing capacity of steel is adopted for
buildings many times higher than those made of other materials. Because the column and
beam are fused by riveting or welding , stresses are distributed between them, and
both can be longer and lighter than in structures in which they work independently
as post-and-lintel.
Ste
el
Fram
ing
Since structural steel must be protected from
corrosion, the skeleton is either covered by curtain
walls or surfaced in concrete or, more rarely,
painted. The steel frame is used also in single story
buildings where large spans are required
The simple cube then can be
abandoned for covering systems employing arches, trusses, and other
elements in a limitless variety of
forms in order to suit the functions of the
building.
EXAMPLES
Tower cranes and communication towers
the Eiffel Tower (Paris, Francia)
the Sullivan Center (Chicago, USA)
THANKS