Calif_Eng
Civil/Environmental
- Aug 20, 2019
- 10
Typically we use gabions, but California RWQCB environmental review prevents us from using gabions near a creek for fear critters will get caught and die. Similarly we can't do a sheet pile wall because we're operating under a general permit which prohibits pile driving. So we have a tieback soldier pile wall with temporary timber lagging behind double H-piles and then 12" high pre-cast concrete lagging pieces and I'm planning on adding an extra soldier pile at the end and have steel between the H-piles at the end as shown in the attached. I plan to float it with no connection to the H-piles and have uncertainty about that and whether to protect the H-pile and allow for slippage with a 10 mil plastic between H-pile surface and concrete. I know I should probably just be facing the whole wall with a monolithic reinforced concrete wall, I'm just not comfortable with the connections to the H-pile having never done that type of design and our agency literally having never done one. Just going to concrete lagging is new for us, typically we just use timber, but my understanding is that is temporary. Sorry for the ramble, any thoughts appreciated. thanks
