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Hello If you evenly post tension or pre tension (ignoring all losses to simplify) say a concrete column resulting in no net bending across the section do you increase the flexural rigidity of the member in some way? Will it lead to less deflection? At the most fundamental level solving for...

Thanks for the input hokie66, This is leaning to one of those problems that in my experience need some rationale applied rather than explicit interpretation of the standards i.e. a fundamental approach. This feels like a problem that may require Morhs circle to solve. I guess the question I...

Thanks BAretired, I just updated the italicized text to include the statement about the reinforcement being aligned in the same direction as the action. Is there some relationship between the angle of the action and reinforcement used to restrain it against said action?

Hi everyone, I am designing a reinforced block wall to behave as a deep beam (it is about 7m deep x 8m span). In our masonry code (Australia) there is a provision that states: The main reinforcement in the direction of the axial load... ...If the reinforcement does not comply with these...

Hi Everyone, I am a graduate structural engineer who uses a wide array of software day-to-day in the design of structures and structural elements. Some designs require me to design members of non-standard shapes e.g. parallel flange channel with unequal flange lengths. In the aforementioned...

Awesome. I've run my numbers aginst both cases and it's obvious that taking 'h' from grade will be more conservative. Thanks for advice - it's my first time doing this calculation!

I have a question relating to the geometric expressions used in appendix C3 of AS1170.2 for buildings with curved roofs. I have a situation unlike those described in the illustrations of this appendix where my building is raised off the ground by a series of columns. Should I be adopting a value...

Hi All, I have begun the process of design my first timber framed house. In doing so I have relied on AS4055 (wind loads for housing) for the determination/calculation of racking forces. I was hoping to have someone with experience in the use of AS4055 to answer why this code stipulates that...

Thanks for all the reply's. I really appreciate the input. You've all confirmed what I thought may be the case - I'll be simplifying the geometry down to a set of rectangles and go from there. BAretired, why can't an angle go fully plastic? Is it because the case where the unrestrained ends of...

Thanks for the reply desertfox, I have been using morh's circle to rotate the second moments of area from global to local (this is a piece of cake). Doing so requires you to find the product of inertia (denoted Ixy when dealing with the second moment of area). In my case, I don't know how to...

I am working on making a generalised spreadsheet for steel angles that can handle user input data. The sections to be evaluated will generally come from one steel which are the most commonly available hot-rolled products in Australia. Link to one steel’s product guide...