Best way to fix baseplate to concrete

[Qaz]

Looking for some advice. Putting up a small roofed area 4m X 4m with 8ft high RSJ. Wondering what's thes easiest way to bolt them to concrete floor. Was thinking of using thunderbolt like

Hex Head Thunder Bolt 12x150 - My Building Supplies | 100% Irish

Rogers of Ballymote, Co. Sligo Stock a full range of Building Supplies for the Trade and DIY customer...

mybuildingsupplies.ie

Wondering are they strong enough or would rawl bolts/anchor bolts be better

 

[br jones]

Looking for some advice. Putting up a small roofed area 4m X 4m with 8ft high RSJ. Wondering what's thes easiest way to bolt them to concrete floor. Was thinking of using thunderbolt like

Hex Head Thunder Bolt 12x150 - My Building Supplies | 100% Irish

Rogers of Ballymote, Co. Sligo Stock a full range of Building Supplies for the Trade and DIY customer...

mybuildingsupplies.ie

Wondering are they strong enough or would rawl bolts/anchor bolts be better

chemical anchors

 

[Qaz]

chemical anchors

Thanks for the reply any recommendations on brands to use.
never used them before how exactly do they work

 

[Steve welder]

I'd say them thunder bolts be grand for all the size you're doing. You near ballymote?

 

[Bury the Trash]

Looking for some advice. Putting up a small roofed area 4m X 4m with 8ft high RSJ. Wondering what's thes easiest way to bolt them to concrete floor. Was thinking of using thunderbolt like

Hex Head Thunder Bolt 12x150 - My Building Supplies | 100% Irish

Rogers of Ballymote, Co. Sligo Stock a full range of Building Supplies for the Trade and DIY customer...

mybuildingsupplies.ie

Wondering are they strong enough or would rawl bolts/anchor bolts be better

yes, as said above resin fixing gives a more precise and predictablly accurate positioning ime.
variations on this make are good, external being important i guess.

Fischer FIS VL 300 T Vinylester Resin 300ml - Screwfix

Order online at Screwfix.com. Vinylester hybrid mortar FIS VL for fixing standard applications in cracked concrete and masonry. Expansion-free fixing for small spacings and edge distances. Suitable for use in steelwork constructions, timber constructions, guard rails, façades, staircases, steel...

www.screwfix.com

and for structural rsj like you mention something like this size of ..

Rawlplug Studs BZP M16 x 190mm 10 Pack - Screwfix

Order online at Screwfix.com. Hexagonal head for convenient use with a torque wrench. For exterior use. Supplied with driver tool. FREE next day delivery available, free collection in 1 minute.

www.screwfix.com

or
https://www.screwfix.com/p/rawlplug-studs-bzp-m12-x-160mm-10-pack/3806f
just then need the right sized drill bit .
other suppliers are available ...

 

[Qaz]

Thanks. Do you know how many tubes I would need for 8 holes if I went with the M 16x 190 bolts

 

[dave mountain]

1 tube but get 2 to be safe. use HDG studs not BZP. or if you are tight like me buy a 3m length of HDG threaded rod and cut to length. drill size is 2mm larger than whatever threaded rod you are using. make sure to galv spray the ends of the rods.

 

[dave mountain]

M16x3M Long Studding High Tensile 8.8 Steel Galvanised | Galvanised Steel Studding | Bolts - Fasteners - Orbital Fasteners

Orbital Fasteners stocks M16x3M Long Studding High Tensile 8.8 Steel Galvanised. A wide range of bolting products including high tensile steel studding are available from Orbital Fasteners.

www.orbitalfasteners.co.uk

also probably the most important thing is make sure you clean out the holes with a blow out pump or using airline

 

[Bury the Trash]

one tube of the 360 ml carton will be enough, just get a few extra nozzles as it can go off quick, with that in mind get prepared for 4 of holes at a time in order to not be panicking if youve got help lift the rsj on to the 4 bolts before they go hard as then there s a bit of movement iyswim, that is thye big difference to thunder blots , with them there no movement either way ,they have to be spoton drilled etc.

remember if using threaded bar , after cutting it, grind or file off the burrs and thread on and off a few times nut as a practice run, as it might be easier to do that then rather than after its in situ.

 

[Lakesdigger]

Provided you know the slab thickness through bolts be fine imo. Resin bolts in more of a faff but will give same result.

 

[Qaz]

Thanks for all the feedback. Would a week be long enough to leave concrete to cure before drilling and using chemical anchor

 

[blackisleboy]

If you are pouring new concrete, why not just incorporate the fixings into it using a jig to get bolt spacings correct. You then just lower the uprights onto the bolts and screw them down with the nuts......

Holding Down Bolts - Plate Washers, Bolt Assembly & More

At Holding Down Bolts, We Supply Standard Holding Down Bolts, Square And Round Washers As Well As Specials To Order. Click Here To Browse Our Range Today.

www.holdingdownbolts.com

 

[Bury the Trash]

If you are pouring new concrete, why not just incorporate the fixings into it using a jig to get bolt spacings correct. You then just lower the uprights onto the bolts and screw them down with the nuts......

Holding Down Bolts - Plate Washers, Bolt Assembly & More

At Holding Down Bolts, We Supply Standard Holding Down Bolts, Square And Round Washers As Well As Specials To Order. Click Here To Browse Our Range Today.

www.holdingdownbolts.com

that would be the best professional way yes ideal, youre right

but getting the positioning right is harder done like that and will be not so straight forward to lay the concrete ... if youre not experienced in practice than when the concrete is laid and line up the 2 stanchions on it in place move to fine tune to perfection iyswim .....then drill the concrete bolt holes through the steel holes in the perfect positions,pop in the bar and resin spot on....and it doesnt sound like its a big building
.....that is when done as a dIY type job.

 

[dave mountain]

Thanks for all the feedback. Would a week be long enough to leave concrete to cure before drilling and using chemical anchor

couple days would be enough, just dont do them up that tight. come back a few weeks later and tighten them right up properly