Using lintels in foundation for garden wall/piers

[Barry F]

I want to construct two 330mm piers joined by a single brick wall (X2) at the front of my driveway. I have a large shrub (Hibiscus, now c. 4.5m high) on one side & a small tree (a Juneberry that is approx 2m high at present) on the other side. When making the foundations, to preserve the root structures, I thought I could create a bridge using prestressed concrete lintels... Is this feasible for such small constructions? Your advice would be appreciated.

 

[Bonni]

Yes, that's ok.

 

[foxhole]

Yes common on garden walls where access is needed to manhole cover it needs to pass over .