Chemical anchors for fixing steels to concrete

Hello. I'm sourcing the stuff I need for my extension. There are a number of 152x152x23 UCs that need to be put in place onto the new foundations. SE has said to use 4 x M16 'Kemfix' anchors for each steel, to anchor the 350mm2 base plate on the end of the UCs. The steels are to create an opening for a set of bifolds.

Looking at builder supplies, there's loads of different makes, types, application types, stud types, prices etc.

Has anyone knowledgeable got any guidance as to what should be used?

Has he specified a length? Personally I would ask him first, but I doubt it needs to be anything special.

mfarrow said:

Has he specified a length? Personally I would ask him first, but I doubt it needs to be anything special.

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No, no length specified. He's given lengths on other elements such as the rebar to connect 2 areas of foundation, but not for these. I was hoping to get these today. SE is not contactible until Monday, which would mean I couldn't get them for another week. Is 190mm a typical length for this type of application?

I've found the Fischer, Hilti, Rawl ones as well as others. Also, the type that comes as a glass capsule as well as a tube. Even the same manufacturers provide different types, but I can't see the difference between them, although some are twice the price of others so there must be.

With the studs, I've seen BZP and Stainless. I would imagine that stainless is better, but would BZP be ok (they are significantly cheaper than Stainless).

Sorry a trip to Paris took over.

What did he say? 100mm in with BZP threaded rod should be OK. I've used a generic resin from toolstation before.

I bought some fischer fixings in the end. Capsules and 190mm SS studs. Next time I'll just get M16 SS rod and cut it into lengths.