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The Si-Eng
Si's civil engineering blog
All original by Si Shen.
All posts are personal opinions only.
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Time-dependent behaviour of structures (1) – shrinkage and creep
Creep and shrinkage are two long-term properties of concrete. This blog post help designers gain a deeper understanding of both

Si Shen
Nov 24, 20193 min read
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Underlying assumptions of Eurocodes
There are some fundamental assumptions of Eurocodes that work in the background of every single design.

Si Shen
Nov 16, 20192 min read
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Conceptual design (1)
There is no strict definition of conceptual design. It can generally be understood as an early stage of design development, after the...

Si Shen
Nov 3, 20194 min read
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Statically determinant structures – in practical use
Statically determinate/indeterminate structure is one of the first concept to be taught at university.

Si Shen
Oct 13, 20192 min read
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Partial factors
This blog post hopes to dig down to the nature of partial factors.

Si Shen
Sep 17, 20193 min read
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A few tips for building computer models
There are a few quick tips that I have learned over the years and I would like to share them.

Si Shen
Sep 6, 20193 min read
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A step-by-step anatomy of concrete stress-strain curve (2)
this one goes on further to touch on the stiffness of concrete and the simplified relationships for cross-sectional design.

Si Shen
Aug 4, 20192 min read
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A step-by-step anatomy of concrete stress-strain curve (1)
This blog post aims to have a step-by-step anatomy of the stress-strain curve of concrete and clarify every detail and assumption

Si Shen
Jul 18, 20194 min read
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Shear (3) – shear in soil
This blog explains the shear behaviour of soil from a whole new angle for you to better understand the underlying reasons

Si Shen
Jul 1, 20194 min read
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The snow white chalk
This blog post kicks off the series with one of the prettiest types of ground – the chalk.

Si Shen
Jun 19, 20193 min read
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Design life – what differences does it make?
This blog post explains the difference that design life makes to the structure

Si Shen
Jun 11, 20194 min read
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Stress concentration around openings
On many occasions, an opening needs to be created in a structure. This could be a tunnel from a station box, a cross passage tunnel from...

Si Shen
Jun 4, 20193 min read
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Shear (2) – Composite behaviour in tunnel lining
This blog is inspired by this article “Simulating composite behaviour in SCL tunnels with sprayed waterproofing membrane interface: A...

Si Shen
May 28, 20194 min read
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Shear (1) - Transverse shear and composite action
I have planned a series of blogs on the topic of shear. This is the first of the series, and it introduces the not-so-commonly known...

Si Shen
May 19, 20193 min read
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A journey of designing ‘self-healing’ concrete
All concrete naturally cracks, regardless of whether it is desirable or not, and regardless of measures that you may choose to adopt, in...

Si Shen
May 6, 20194 min read
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The calculation of crack width
As part of serviceability limit state, cracks within reinforced concrete structural elements are typically required to be controlled down...

Si Shen
Apr 13, 20193 min read
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Some FAQs about CIRIA C766
As of 12th December 2018, CIRIA guide C766 has come on live. As one of its first practical users, I posted a previous blog post had a...

Si Shen
Jan 13, 20193 min read
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2018 - The Year of Delays
Year 2018 has been the ‘Year of Delays’ for all major projects that have something to do with tunnelling. With every single project one...

Si Shen
Dec 27, 20184 min read
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Dome structures
Architects hate columns. Columns are ugly, block views, and are the biggest enemies of architectural elegance. When columns appear in...

Si Shen
Dec 5, 20183 min read
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CIRIA Guide C766 preview
A brief preview of CIRIA C766 which has replaced C660

Si Shen
Nov 20, 20183 min read
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