Underground Construction - September 2020 - 25
design engineers, which creates a conceptual design of the proposed shoring system.
The site-specific conditions determine
the loadings that get applied to the specific
shoring system being utilized for support.
The engineer team will compare the
strength of the materials of each individual
member of the shoring system to the
applied loads from the site. Shoring design
engineers make the needed calculations
at the conceptual stage to ensure the
proposed system will meet structural
requirements, if accepted by the contractor.
The conceptual design is an important
step in the process. Once contractors
review it, they may realize they forgot to
communicate some important piece of
information about the project or the site.
From our experience, that happens about
50 percent of the time.
It is important for contractors to see
what the engineers are going to put on
paper before they create the formal design
plans. Having everybody on the same page
up-front will help eliminate revisions later.
Calculating loads
A P.E. can generally look at things and
have an idea of what will work, but until
the engineer really runs the numbers and
gets into the analysis, you won't know for
sure. For example, if the project is putting
in bracing levels, is it two bracing levels
or three? Are crossing struts needed
or will clear span without any interior
support work?
A formal analysis is needed to make
decisions like these ones, checking to
ensure all components of the support
system pass applicable engineering
design standards.
Designing a support system is
comparable to designing a building,
except that loads are applied laterally
rather than vertically. Each structural
member of a shoring system is a column
or beam, and engineers need to consider
the consequences of members undergoing
bending, compression or tension.
The biggest difference is in the loads.
In the building industry, 100 pounds
UCONonline.com | SEPTEMBER 2020
25
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Underground Construction - September 2020
Table of Contents for the Digital Edition of Underground Construction - September 2020
Contents
Underground Construction - September 2020 - FC
Underground Construction - September 2020 - IFC
Underground Construction - September 2020 - Contents
Underground Construction - September 2020 - 4
Underground Construction - September 2020 - 5
Underground Construction - September 2020 - 6
Underground Construction - September 2020 - 7
Underground Construction - September 2020 - 8
Underground Construction - September 2020 - 9
Underground Construction - September 2020 - 10
Underground Construction - September 2020 - 11
Underground Construction - September 2020 - 12
Underground Construction - September 2020 - 13
Underground Construction - September 2020 - 14
Underground Construction - September 2020 - 15
Underground Construction - September 2020 - 16
Underground Construction - September 2020 - 17
Underground Construction - September 2020 - 18
Underground Construction - September 2020 - 19
Underground Construction - September 2020 - 20
Underground Construction - September 2020 - 21
Underground Construction - September 2020 - 22
Underground Construction - September 2020 - 23
Underground Construction - September 2020 - 24
Underground Construction - September 2020 - 25
Underground Construction - September 2020 - 26
Underground Construction - September 2020 - 27
Underground Construction - September 2020 - 28
Underground Construction - September 2020 - 29
Underground Construction - September 2020 - 30
Underground Construction - September 2020 - 31
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Underground Construction - September 2020 - 38
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Underground Construction - September 2020 - 40
Underground Construction - September 2020 - 41
Underground Construction - September 2020 - 42
Underground Construction - September 2020 - 43
Underground Construction - September 2020 - 44
Underground Construction - September 2020 - 45
Underground Construction - September 2020 - 46
Underground Construction - September 2020 - 47
Underground Construction - September 2020 - 48
Underground Construction - September 2020 - 49
Underground Construction - September 2020 - 50
Underground Construction - September 2020 - IBC
Underground Construction - September 2020 - BC
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