September 15, 20215 yr 6 hours ago, pocster said: https://uk.rs-online.com/web/p/masonry-plugs-anchors-fixings/6221988/ ????? for example or https://www.ffx.co.uk/product/Get/Spit-055345-3439510553459-Fix-Z-Through-Bolt-Anchor-Stainless-Steel-A4-100Mm-X-25?gclid=Cj0KCQjws4aKBhDPARIsAIWH0JX3BNFpcYhnYZktHBNgznaXMXYPXDFYxW9IhTzNeEGFRfbuRyr48BoaAsP2EALw_wcB#FPD ?? The FFX ones say fixing thickness 6 - 25mm. The RS data sheet says 10mm for them. On that basis go with the FFX ones. (Resin is so much easier! Sure you'll waste a bit and go thru a few mixing nozzles until you get the hang. If you were nearer and I didn't have the dreaded Covid lurgi you could have borrowed my gun, brush, puffer etc).
September 15, 20215 yr Author Just now, Onoff said: The FFX ones say fixing thickness 6 - 25mm. The RS data sheet says 10mm for them. On that basis go with the FFX ones. (Resin is so much easier! Sure you'll waste a bit and go thru a few mixing nozzles until you get the hang. If you were nearer and I didn't have the dreaded Covid lurgi you could have borrowed my gun, brush, puffer etc). I’ll order the ffx ones ! . Read some bad reviews of the Fischer ones anyway ….
September 15, 20215 yr 54 minutes ago, pocster said: I’ll order the ffx ones ! . Read some bad reviews of the Fischer ones anyway …. Worst case they'll f**k up and spin in the hole. Then, drill out to 14mm, clean the hole...and use resin! ? Edit: If you can get the spinning anchors out of course. Edited September 15, 20215 yr by Onoff
September 16, 20215 yr For what you are doing then any technology should be ok. However, I have experienced expansion bolts/ sleeve bolts coming loose from solid concrete. This was due to repeated movement which gradually wore away the concrete at the friction point. It was an extreme case and unlikely in everyday life. The cause was schoolchildren swinging and shoving at a safety rail, so several times a day for every school day for a year, and once they saw it was moving they went for total victory. Replaced with resin anchors in the same holes, and all good. This concern therefore only applies with repeated movement and stress on the fixing, and probably not to your stairs.
September 16, 20215 yr Author 44 minutes ago, saveasteading said: This concern therefore only applies with repeated movement and stress on the fixing, and probably not to your stairs. Gimp party on the staircase maybe an issue then ?
September 16, 20215 yr 1 minute ago, pocster said: party on the staircase maybe an issue then depends how often you have them.
September 16, 20215 yr Author 6 minutes ago, saveasteading said: depends how often you have them. Daily as you well know “ Gimp the Spice “ - as your party name …
September 16, 20215 yr Well, you know how on bridges the army are told to 'break step' to avoid a pulse building. Could you simply give an instruction to guests to vary rhythms. Could be called the rhythm method.
September 16, 20215 yr 1 hour ago, saveasteading said: However, I have experienced expansion bolts/ sleeve bolts coming loose from solid concrete. I don't think tentative tiptoeing on bloodied feet will cause much to loosen. I'm referring to those lucky enough to escape, only to be haunted by a lifetime of memories of what went on. (I still wake up screaming). On a serious note.....I have frequently seen water get in and around the expansion anchor, freeze/thaw etc and go loose. Could be an issue in that side wall. Usual to put a good ring of silicone around the bolt then push whatever you're fixing onto it.
September 17, 20215 yr Author Order those bolts from ffx - loads in stock . Now get an email out of stock until October ! . @Onoff find me something else !!!
September 17, 20215 yr Author Could go for these ? https://www.ffx.co.uk/product/Get/Spit-050443-3439510504437-Fix-Z-Through-Bolt-Anchor-Stainless-Steel-A4-125Mm-X-25 but look at the price ??
September 17, 20215 yr 4 minutes ago, pocster said: Could go for these ? https://www.ffx.co.uk/product/Get/Spit-050443-3439510504437-Fix-Z-Through-Bolt-Anchor-Stainless-Steel-A4-125Mm-X-25 but look at the price ?? They are M16, how big is your hole etc?
September 17, 20215 yr Author (expletive deleted) it ! Ordered them ! Got 5% off . If they are wrong can always cancel the order ! More haste less speed !
September 17, 20215 yr Author 1 minute ago, Onoff said: They are M16, how big is your hole etc? Oh bollocks ! Missed that arrgg! will cancel ! @Onoff find me what I need please !!
September 17, 20215 yr Author these ? https://uk.rs-online.com/web/p/masonry-plugs-anchors-fixings/6222004/ Showing in stock. But need to check my concrete wall tomorrow! - can't remember how thick it is! FFS!
September 17, 20215 yr Author 18 minutes ago, pocster said: these ? https://uk.rs-online.com/web/p/masonry-plugs-anchors-fixings/6222004/ Showing in stock. But need to check my concrete wall tomorrow! - can't remember how thick it is! FFS! Perhaps depth doesn’t matter as they can take a thickness of 50mm . Order these ?
September 17, 20215 yr 24 minutes ago, pocster said: Perhaps depth doesn’t matter as they can take a thickness of 50mm . Order these ? You need 105mm min structure thickness (your wall). Drill a 90mm deep hole etc: Structure thickness is a critical factor. If you ever look at a load diagram for expanding anchors there's like a conical shaped zone radiating from where the anchor is "gripping" Says circa 80kg tensile strength, in shear good for X10 that and more. Go for it. You just cut the excess stud off with a slitting disc and pop some pretty plastic bolt caps over the nut.
September 17, 20215 yr Author Just now, Onoff said: You need 105mm min structure thickness (your wall). Drill a 90mm deep hole etc: Structure thickness is a critical factor. If you ever look at a load diagram for expanding anchors there's like a conical shaped zone radiating from where the anchor is "gripping" Says circa 80kg tensile strength, in shear good for X10 that and more. Go for it. You just cut the excess stud off with a slitting disc and pop some pretty plastic bolt caps over the nut. Ordered ! ⭐️ for you . 99% sure wall is over 100mm thick ( famous last words )
September 17, 20215 yr 7 minutes ago, Onoff said: a conical shaped zone radiating from where the anchor is "gripping They really do fail with a cone of concrete attached to the bolt.
September 17, 20215 yr 5 minutes ago, pocster said: Ordered ! ⭐️ for you . 99% sure wall is over 100mm thick ( famous last words ) "Cough!" Resin is more forgiving.
September 17, 20215 yr Just now, saveasteading said: They really do fail with a cone of concrete attached to the bolt. I recall some sooper dooper Hilti ones I think, used with a special drill bit that cut their own, conical dovetail in the hole.
September 17, 20215 yr Author 3 minutes ago, Onoff said: "Cough!" Resin is more forgiving. Don’t care . I’m not forgiving
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