Beam to Pile Connection Without a Notch

[jerseyshore]

Working on a new shore house that has the same round 10" butt timber piles supporting both the first & second floors.

The original layout included having the top of the piles with a typical notch at the 2nd floor for a PSL girder.

But at the first floor, since the piles have to run up to the 2nd floor, the arch wanted to do a double beam setup (one beam on each side of the piles) without a notch to allow the piles to pass thru.

I hate these types of connections, especially on piles that dry out leaving you with loose bolts. With the reactions I calc'd so far it would require 4 bolts per beam which is unrealistic unless you have a >14" deep PSL beam on each side. I only need 3.5"x9.25" PT PSL's. And I also don't want to notch a pile midway up.

Does anyone have some good ideas for attaching that lower level of beams? It doesn't have to be a double beam setup, can just be one sided. And needs to be flood resistant construction.

I have no problem telling the arch that even though they have done this a thousand times it doesn't actually work, but it's a new client so I want to give a cost effective solution. We have this condition on almost 40 piles. Thanks all.

 

[phamENG]

thick, galvanized angle as a bearing seat could work. then a bolt or two to restrain rotation of the girder.

 

[XR250]

Is it hard to get straight members at this height?

 

[jerseyshore]

Is it hard to get straight members at this height?

No it has nothing to do with height since it's a regular 8 ft ceiling.

This particular township requires the primary living level, which in this case is not the slightly-elevated first floor (mostly gym & hangout space there), but rather the 2nd floor, to be pile supported with beams parallel to the ocean. It's the only town in NJ that I know of that has this requirement. Who doesn't love LBI.

 

[jerseyshore]

thick, galvanized angle as a bearing seat could work. then a bolt or two to restrain rotation of the girder.

This is my default detail for mis-aligned piles & beam bearing repairs, so it was my first thought here as well.

 

[Smoulder]

Timber corbel. Same idea as angle except wood.

 

[jerseyshore]

Timber corbel. Same idea as angle except wood.

I do like this idea. Definitely less expensive than steel. Any thoughts on material? Maybe 4x6 PSL post that way we can add as many thru bolts as needed.

 

[phamENG]

I do like this idea. Definitely less expensive than steel. Any thoughts on material? Maybe 4x6 PSL post that way we can add as many thru bolts as needed.

I don't. Has the same shrink/swell issues as bolting through the beam. It'll give you more room to put bolts in, sure, but you still have resiliency issues. And PSLs are pricey. I bet the steel is probably half the cost per foot. At the quantities you're talking about, material cost will probably be pretty close if not a little in steel's favor, and the end product will be better.

 

[jerseyshore]

I don't. Has the same shrink/swell issues as bolting through the beam. It'll give you more room to put bolts in, sure, but you still have resiliency issues. And PSLs are pricey. I bet the steel is probably half the cost per foot. At the quantities you're talking about, material cost will probably be pretty close if not a little in steel's favor, and the end product will be better.

The end product is certainly a lot better with steel. And more capacity on the bolts (which also get to be a lot shorter).

If the feeling of galv angles vs PT PSL's is similar-enough cost then I'll go with steel for sure. This house is probably a $4M-5M build so I'm certainly not cheaping out on what's holding up the first floor.

 

[XR250]

I build a pole barn with a cont. steel beam for the joist support. I cut back the beam flange at each column and just bolted the web to the timber. Worked out nicely.