Footings over PVC pipes

[bernynhel]

I fabricate extended steel pillars for carport covers, patio covers, etc and a client would like his patio pillars extended from the existing header a few feet to about a foot from his pool. Problem is that the PVC lines that feed the pool, sauna and the hot water line from heater run along side the pool right where I would pour the footings for each pillar. The photo is an (amateurish) photo shop rendering. It shows the pillars crowding the pool instead of anchoring a foot closer to the house. I have a few suggestions and ideas but would like some more opinions. Im replacing the 4x4 pressure treated pillars that are mounted to the existing pad directly under the header with 14 gua 4x4 steel pillars as rendered. How can I pour footings directly over the water lines? The goal is to gain more usable room on the patio pad which is coming soon. Thanks, in advance, for any ideas. A solution I'm considering is to take a 1 foot long section of sona tube, cut out about 4 or5 inches and position it over the pipes and digging on either side of the pipes so the footings would look like an inverted "Y" with the pipes accessible, protected by the sona tube sections. This house is in Palm Springs and the soil is all sand.

 

[Innovate1]

Far from an expert on such things but it seems like a bad idea to put the post force which has some force toward the pool so close to the pool edge. And on footings directly over the pipes I would at least provide some clearance as you propose so the footing is not directly on the pipes.

 

[Firebrick43]

Sometimes you just need to tell the customer NO.

Don’t make it your problem down the road, let it be someone else’s if he won’t allow the footers somewhere reasonable.

 

[strutaeng]

WOW! 4x4 x 14 gauge kinked posts?! I realize it's just a carport, but it still needs to hold up the dead load, and a full roof live load of 20 psf... Do those kinked posts actually work analytically? Seems sketchy to me.

What kind of footings are you pouring? Spread/isolated footings? What size?

I'm assuming you are shoring the carport temporarily?

Sorry.

To answer your question: you can typically pour over conduit in footings, as long as concrete cover is maintained. It's common practice to sleeve the penetrations.

 

[mike93lx]

I'd be worried about settling causing the footings to damage the pipes. I doubt the material spread around the pipes is anywhere sufficient for footings, plus all of that material was excavated when the pool was built.

I'd be looking at a better beam with the goal of cutting back the number of posts, or bring the posts out on top of the pool wall, assuming it's concrete

 

[Shiftless]

How many little 4x4 posts are already there? Seems to me that with the proper sized header, there would only have to be 2 (perhaps beefier and better looking) posts under that header. Gaining useable room seems like a rather vague goal.