The main important thing while checking shop drawings is you should always keep in the mind shop drawings are the detailed drawings of the design drawings. Hence, design drawings shall be given utmost priority. It is generally not permitted to change the design criteria and size of the primary structural elements until and unless structural recalculation is performed under the supervision of the experienced structural engineers.
We
will discuss the things to be considered for the concrete part in this blog. I
will provide you with the real Project examples which I encountered during my
work.
1)
Size
of all the structural elements like columns, slabs, girders, rafts, and beams
shall be as per the design drawings. All the elements ID/Unique Name based on
the size and reinforcement types shall be clearly mentioned.
In case of missing id in the shop drawing you can comment as below:
Depth of Cover refers to
the distance from the elements outermost part to the outermost reinforcement.
It is very important to keep correct depth of cover to avoid the rusting of
reinforcement. General Rules of practice for the Depth of Cover to Reinforcement
is as below:
Please
note above table does not apply to all the projects. You should see your design
documents to confirm the depth of cover.Also,
there are common mistakes of making the depth of cover same for the concrete
exposed to soil and not exposed to soil.
If
you find such case, you can comment as below:
3)
Confirmation
of the grade of the structural elements
Concrete
grade is the significant property of the RC Structural Elements. You should
thoroughly confirm the grade of all the structural elements with the structural
report. Because it is the basis of providing the strength to the structure and
development length, lapping length, and construction method at the joint of
different grade concrete also depends on the concrete grade.
Stay connected for next episode.
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