01/25/2022
Deck. Composite decking, aluminum rails.
Some details:
The very first challenge (after design and layout) was the soil type and water level. The upper layer was sand, which would fill in as rapidly as it was dug out. Before reaching 42" it hit water, and then a layer of hard clay. To dig the post holes I used oversize sonotubes (concrete forms) as a barrier against the collapsing soil and accumulating water, digging out the center and working them down to depth. When set into the clay at the bottom they kept out the water quite well. I removed any excess water with a sump pump and wet/dry vac and then compacted washed gravel into the base to stabilize it, a researched and proven method of stabilizing questionable soil. The footings went on this.
You can see in the photos of the framing the black fabric on top of some of the joists. There is no requirement for this, but I decided to use tar paper over all doubled joists because the space between is the most likely to accumulate moisture and rot prematurely. Flashing tape is another option, which I decided against because the tapes are generally also a v***r barrier, whereas tar paper is not. V***r generally moves upwards, and I wanted to allow any moisture that does get in (even with tape it will find a way in) to have that passage out.
The stairs I opted to attach directly to the beam with a Simpson stringer/rafter hanger. There are other methods; in this scenario this method was superior. I tried their adjustable stringer hanger and was very disappointed in how flimsy they were, but due to space considerations I needed them on the two end stringers and so reinforced them with a joist angle on the other side of these two stringers. The stringers are spaced at 10" because that is what the manufacturer recommended. I also hung a 'beam' of sorts at the midspan and put blocking across as well to keep them in line and make them more solid, and they terminate into a beam hung between two 4x4s at the base.