Bracket type

[Grouch]

I'm showing a new 1-1/2" conduit, RMC type, to be installed on the exterior of a building. The exterior is red brick. It will go up 4 stories to feed a new electrical panel in a renovated apartment.

I'm being requested by a building reviewer to indicate on my drawings the type and size of the exterior brackets to be used. I have to specify the anchors, material type, size, and epoxy embedment.

Can someone please be kind enough to help me out . I've never specified this. and what is epoxy embedment?

Help.

 

[LarryFine]

It means attaching the anchors to the brick using adhesive in the holes instead of expansion hardware.

 

[infinity]

The exterior is red brick.

There are epoxy anchors which use only chemicals to provide the anchoring instead of mechanical anchors. You can also use mechanical anchors in conjunction with epoxy resin to make both a mechanical and chemical connection to the concrete or brick. Not sure why you would need either type for anchoring to brick.

 

[Grouch]

Not sure why you would need either type for anchoring to brick.

How do you typically anchor to brick?

 

[Eddie702]

I like the wedge type expanding stud anchors you can get them in stainless steel. You can use them with 1 hole or two hole straps or put a short piece of strut on the wall and strut clamp the pipe to the strut.

 

[CoolWill]

Use Minrlac strap with 1/4" Redhead and Redhead T7+ epoxy?

 

[don_resqcapt19]

I like the epoxy for exterior because the epoxy seals the hole and prevents any water from entering. Especially for horizontal surfaces in areas where it gets cold. Have seen lots of mechanical anchors with a crack in the concrete, most likely from water entering and freezing.

Use Minrlac strap with 1/4" Redhead and Redhead T7+ epoxy?

I see minis as way too light duty for this application. I would be looking at malleable one hole straps with back straps for something like this.

 

[kwired]

I see minis as way too light duty for this application.

I think more details are necessary before saying they are too light. I've ran ~100'+ vertical runs on grain elevators with minis attached to beam clamps before. May want less than minimum code spacing between supports in some cases. Sometimes structure you would be attaching to in the case I mentioned will somewhat dictate what spacing choices are. Maybe 5 foot, 8 foot, 10 foot intervals is about only choice you have without making your own attachment points somehow.

 

[don_resqcapt19]

I think more details are necessary before saying they are too light. I've ran ~100'+ vertical runs on grain elevators with minis attached to beam clamps before. May want less than minimum code spacing between supports in some cases. Sometimes structure you would be attaching to in the case I mentioned will somewhat dictate what spacing choices are. Maybe 5 foot, 8 foot, 10 foot intervals is about only choice you have without making your own attachment points somehow.

Just my opinion, but I would never install minis in an exterior application and rarely for an interior one.