Engineering Centre

Hello, I am trying to design a connection for secondary steel supported on concrete ground beams (report attached). Steel needs to be 120 minutes fire rated, so connection needs the same. I have no problem with ULS design, but Fire design has more than 1000% utilization ratio. I think that steel is a problem, not a concrete. ...

Hello, I need some help calculating the minimum concrete cover needed in a couple of cases. In both cases I want to use M12 bolts and Hilti Hit-CT1. Case 1: M12 bolts and a concrete cover of 40 mm, is this enought? Case 2: I have a column steel footing connection to the slab, where the concrete cover is 42mm. Here i can pu...

Who or where do I go to get a copy of my permit to show I have been trained in the safety and uses of the different types of tools.

Hello, Query 1: When installing resin anchors with dynamic washers, do the dynamic washers need to stay in place? Or can they be removed afterwards. I have a situation where I am checking an existing structure and the O&M drawings say that the fixings should be dynamic washers. However, they are not seen on the fixings. Que...

Hi there, is there a reason that one can only select a maximum of 4No. fixings when using profis anchor for fixings into masonry? With fixings into concrete, one can obviously reduce design loads per fixing by increasing the number of fixings, and I was hoping to do the same with fixings into a masonry wall. Thanks

We have had to specify that filled holes (annular gaps) are to be used in the design of a post installed fixing arrangement due to having a three bolt load arrangement. A contractor who is constructing the project has just informed us that the Hilti Filling Washers are only available up to M24 size and the bolts we have speci...

Hej! Jag behöver göra en infästning på två motstående sidor av en vägg (t=180). Hur skall jag tänka och hur skall jag använda Profis ?

Hej! Vi projekterar en ombyggnad av en äldre damm. Vi behöver fästa in en ny frontplatta till en befintlig pelare, vars betong är våt och drabbad av ASR. Kan man borra rätt igenom pelaren (600 mm) och injektera ett armeringsjärn som sticker ut på båda sidor om pelaren? Vilken massa är isf lämplig? Bifogar en figur.

In the steel norm EN 1993-1-8, 6.2.2(7) there is a section to calculate the shear resistance for anchor bolts connected to concrete. This calculated capacity is much smaller than what you get if you do the coresponding calculation using EN 1992-4. For 8.8-steel the difference in calculated sheer strenght is a factor of 2. What...

Hi, What chemical anchor would you recommend for connecting a steel plate to a sandstone wall? Will Hilti Hit-RE 500 V4 be suitable? Can you also advise on the achievable shear capacity of a M12 anchor with a 110mm embedment? Thanks.