I am designing an anchored reinforced concrete retaining wall for a sloped backfill supporting a road. The slope has currently failed, our partner geotechnical company will be designing a temporary soil nail solution to enable us to safely install the retaining wall and anchors, which will then...
Hi,
Australian masonry code AS3700 provides a design value for flexural tension in masonry (limited by mortar tensile capacity). Could this extend to the tension between the base of the wall and a concrete footing - see attached sketch for details. In this case, the basement wall acts as a...
I am detailing remediation for a bearing pad between concrete corbel and a metal-deck slab. See spalling in attached photos where you can see the top corner of the corbel is spalling.
My assumptions so far:
- Spalling is likely caused by inadequate bearing detail between corbel and metal-deck...
I am an engineer practicing in Australia. I have a query about the use of 4140 general purpose high-tensile grade steel as a replacement for a typical/standard grade 8.8 structural bolts.
The context: I have designed an M48 grade 8.8 bolt (880MPa tensile strength) to be cast in to a concrete...
Hi,
I am a structural engineer designing a rail buffer stop to resist a force of 200kN @ 10kmph. The buffer stop works by small clamps at the bottom which are tensioned against the rail shoe to provide a known force (see attached sketch for an example). This known force can then be used to...
Hi,
I have a current job where I have to verify an existing timber dome in Melbourne, Australia against some temporary scaffold loading (in place for <6 months)and I have a question about material strength assumptions.
I am verifying the main timber dome of the Royal Exhbition Building...
thread507-432682
This is a continuation of thread507-432682 which was closed before I had a chance to submit some final comments, especially in respect to comments made by KootK and BARetired in respect to the shear failure mechanisms.
Please also see attached a final photo of the installed...
Hi,
See attached pdfs for visual aids to my question.
I would appreciate some advice on the design of a circular steel beam around the top of a large dome on a large and important historical building.
I am designing scaffolding around a 20m diamater dome and its cupola to provide access for...
All,
I would like to start a discussion on the calculation of ''dynamic'' and ''stability'' loads for tower cranes using AS1418.4 in conjunction with manufacturers loads. This in the context of foundation design and checking of lateral deflection for building clearances.
I am posing this...
Hi All,
I would be interested to get peoples opinion on the design of a shear key around a column which receives the load from a transfer truss supporting part of a 14-storey building. Please could forum-users read this in conjunction with my attached sketch which is intended to convey alot of...
Hi,
I would like some advice about the calculation of a suitable kN value to specify for pull-testing of post-fixed lifting eyes. Some context:
- I am British temporary works engineer who has recently started practicing in Australia
- A 0.5t reinforced concrete Mural is to be lifted by an...
Hi,
I have a query regarding pre-load applied to tower crane anchors. I am a Temporary Works Designer and have experience with designing tower cranes with sacrificial cast in bottom tower sections but not traditional holding down bolts. I have produced a preliminary anchor bolt design including...
Hi,
I have a question regarding the effect that spacing of temporary propping has on how much load those props attract. To give you some context to the question, please see attached sketch and read below:
- A 6m wide pedestrian bridge spanning 6.5m is supported between an elevated pedestrian...
