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Can someone please explain the difference between the different grout classes to SAA MP20? For example the difference between Class A and Class C grouts?

Moving the core is obviously the simplest solution and if possible would have been done the moment we hit steel. Problem is due to the steel we are trying to avoid coring through and other space requirements the hole has to be where it is.....

Yes we are using a water cooled coring bit. The problem seems to be that we are following a bar all the way down the core, not just slicing through a bar that crosses the core.

We have been required to do some rectification works on a recently constructed reinforced concrete headstock. This rectification works involves the drilling of 1200mm deep, 45mm diameter cores into the concrete. We have been diamond core drilling and all has gone well except for the last core...

Hi there, I am after some advice on how to correctly model an existing portal frame building. It is a fairly long-winded explanation so please bear with me!! The portal frame consists of two bays across its width, with the interior column (that separates the two bays) joining the rafters at the...

Ussuri, In Australia, the Australian Institute of Steel Construction shows a one bolt base plates for parallel flange channels. I have also seen it used with small hollow sections. I dont think its use is highly recommended due to its instability during erection - a point you mention in your...

On this subject, when does a baseplate detail become assumed to be fixed? Being from Australia, the standard base plate connections as specified by the Australian Institute of Steel Construction for pinned base frames consist of either a 1, 2 or 4 bolt baseplate. Is it a function of the number...

Hi there, I am after some advice on the analysis of an existing portal frame building using the structural analysis program ‘Microstran’. The portal frame is a standard portal frame consisting of I section columns and rafters. In addition, the portal frame also has a separate column...

Hi there. I have got a question regarding the bracing of a beam through the use of an identical beam running parallel to it. The beams are tied together through the use of horizontal members running from the top flange to top flange of each beam at approximately 2m centres (the top flange is the...

Hi there, I am looking for some guidance in regards to the calculation of the section slenderness of a member subject to bending in accordance with AS4100-1998. My query is in how Table 5.2 is applied to bending of the section about both the major x-axis and minor y-axis. For the purposes of...

Thank you all for your comments. As a young engineer (only a year out of my studies) I am finding that most of the standards or textbooks I come across seem to be written in a way that makes it very hard to understand unless you have some prior knowledge of the subject or an expert on hand to...

Hi, I am doing some research on membrane structures (architectural sails) and have come across some information that says that these type of structures (large displacement structures) should be analysed at working loads, not limit state loads. It says that low factors of safety may result if an...

i just had my patio done. The surface was nice and smooth, then as the contractor started doing the stamping, it started raining. they tried to cover it but couldn't in time, and the result is bad aethetics and spots. The contractor is unhappy with his work and suggested pouring an additional...