offers Engineering and Design Services of light gauge steel framing systems.
Our experienced team of Engineers, provides you with a complete line of
design services that will make your building process cost effective and
Our designers are experienced and very qualified. Having
designed thousands of commercial and residential buildings, Somundy Enterprises
International provides the highest quality and most economical light gage
steel roof, wall and floor solutions available.
Our team of Engineers and Technologists can design light steel structures
to conform to any specification or building code in the world. Seismic
loads, wind loads, snow loads, and live loads are all considered when
determining the structural design requirements. In addition, our Engineers
will also provide you with back-up calculations, fire rated assemblies,
thermal and sound assemblies, structural member sizes, gages and maximum
spacing requirements. This information is delivered in a drawing form
that may be used to obtain municipal approvals.
Our Designers will build a virtual 3 dimensional CAD model of your building,
and frame it according to Engineering calculations and detailing. Clear
and comprehensive production and Installation drawings are generated from
the model. The drawings will enable you to build your light gage steel
framing most efficiently and effectively while ensuring proper installation
that will meet the design requirements. The drawings included are;
These drawings provide you with all the information required to frame
the floors and walls of your building structure. They include; structural
member sizes, gages, maximum spacing requirements, beam and lintel sizes,
load bearing and non-load bearing wall locations, and typical/specific
connection details that meet engineering and building code requirements.
Your roof will be designed with a light gage steel truss system and/or
c-channel rafter framing. Drawings will be provided to allow you to
construct the roof and/or produce trusses prior to on-site installation.
Connection details will also be provided along with roof bracing diagrams.
These drawings outline and confirm the foundation of your building and
provide you with important information regarding cast-in tie down items,
beam pockets and/or special piers or footings. This drawing allows for
accurate coordination with your foundation contractor.
We complete the project with an on-site review of the framing once it
is erected. This review is to ensure that the framing was installed according
to the engineering design. The engineer will submit a certified letter
of completion to you and the building officials. This provides you and
your local building department with the appropriate assurance that the
building was built as designed.
All trusses are modeled in STRAP, a specialized
light gauge steel analysis computer program. The truss model is input
into the computer graphically, consisting of beam elements and nodes,
or points of intersection of beam elements. The orientation of the beam
in space is assigned through setting the local axis. Each beam in the
program is assigned a material property from the database of available
shapes. Beam end releases are assigned where required. Continuously rolled
members are assigned fixed intermediate end releases where web members
create a node. Standard practice is to assign a pinned connection at one
support and a roller connection at the other support.
Loads are applied to the beams continuously across the length of the beam
to accurately reflect the dead load conditions as specified on the drawings.
Live loads are applied in accordance to their value and direction. Snow
loads are applied to the top chords in values required by the plans, and
are stated on the shop drawings.
NOTE: Other truss programs often assign
loads at nodes only, which neglects the fact that proper analysis of the
chords requires treating them as a continuous beam. In a light gauge steel
truss, axial forces alone are usually not the limiting factor, but rather
the lateral-torsion buckling stress in conjunction with the axial forces
that limit the allowable loads. The software we use applies this more
stringent method of analysis.
|Floor live load- 40 psf
||Floor dead load- 10 psf
| Snow load 30 psf
(factored by exposure coefficient)
|Roof dead load- 10 psf
|Wind velocity design pressure - 80 mph
||Ceiling dead load- 5 psf
|Roof live load- 25 psf
In some cases, local codes may require values other
than the standards noted above. It is the responsibility of the purchaser
to supply local code design loads if other than above.
Results are tabulated and reported in list fashion, sequentially by beam
number. The beam number graphic is printed separately from the tabulated
results. Results are reported as a percentage of allowable stress on each
beam. Fastener count is derived from beam axial stresses. Allowable fastener
stress is computed in accordance to standards established by AISI. When
joining metal of different gauges, only the thinner gauge value is used.
Shear Values of Screws (# 10-16 drill point) in pounds
Factor of Safety for screws values is 3.0
|Allowable Load in Shear