jba970
Structural
- Jul 23, 2014
- 4
Hi all,
I was digging through some old drawings and came across something that I don't fully understand. From the drawings, it looks like the client was replacing a piece of heavy machinery supported by a plain, unreinforced concrete pad. The equipment pad sits on a 2'-0" thick slab. Original pad thickness was roughly 4'-0."
The new piece of equipment must've had a much larger height, because the engineer demo'd the top 3'-0" of existing concrete, then poured back 1'-0" with a single mat of reinforcement, making the new pad thickness = 2'-0."
They used epoxy anchors with a 12" embed. Max anchor reactions from another sheet appear to be:
Equipment DL: 160k
Tension (uplift): 2k
Shear: 15k
My question is - what good does the added mat of reinforcement do? Does it help with the uplift? Why not just chip away whatever you needed and repair with a cementitious repair coating?
I may be asking the wrong questions!
Thanks!
I was digging through some old drawings and came across something that I don't fully understand. From the drawings, it looks like the client was replacing a piece of heavy machinery supported by a plain, unreinforced concrete pad. The equipment pad sits on a 2'-0" thick slab. Original pad thickness was roughly 4'-0."
The new piece of equipment must've had a much larger height, because the engineer demo'd the top 3'-0" of existing concrete, then poured back 1'-0" with a single mat of reinforcement, making the new pad thickness = 2'-0."
They used epoxy anchors with a 12" embed. Max anchor reactions from another sheet appear to be:
Equipment DL: 160k
Tension (uplift): 2k
Shear: 15k
My question is - what good does the added mat of reinforcement do? Does it help with the uplift? Why not just chip away whatever you needed and repair with a cementitious repair coating?
I may be asking the wrong questions!
Thanks!
