Why not use vertical ties from top chord to bottom chord in ordder to apply the ceiling loads to the upper chord. These ties could be threaded rods or even cable/turn-buckle.
Why not cast concrete ring beams within the ring of sheetpiles. If the soil conditions are equal all around the exterior of the shaft, the ring beams will be in compression and act as an arch.
Ring beams are cast as required during excavation. The spacing between rings will depend on soil...
I agree with kslee 1000's skepticism regards the waterproofing. I would also recommend an external waterproofing system.
Consider an interior applied membrane. A tiny hole through the wall will cause a bubble to form behind the membrane, which will pressurize up to the static ground water...
Archeng59, if the suggestions made by the "value engineering" do not give a cost/time benefit they should not be approved. If they are beneficial, at the clients discretion, they can be implemented.
The changes should be reviewed by the architect and structural engineer of record and they sign...
I do not like to specify welding of light gauge metal to structural steel members. Although it is common practice to weld corrugated deck to open web joists and edge angles, I prefer to use bolt/nut/washer or self-drilling/self-tapping screws.
If welding is unavoidable, place a washer over the...
The term"value engineering" does not involve engineering. It usually refers to ideas or suggestions made by persons involved with a project that could save money or time.
These suggestions can be made by ANYONE but will be reviewed by the design professionals before implementation or rejection...