I'm drawing up my plans for studwork, I notice some peoples builds are spacing their studs at 610 centres for the internal 11mm osb cladding, is this not a bit far leaving the osb unsupported over 610mm? Limits fixing points for shelving too.
Never have understood people's liking for OSB for internal walls.
You can solve all your spacing issues by using 18mm t&g water resistant chipboard flooring sheets. Just put them on horizontally and stagger each run like bricks. Even if you go to 22mm it is still cheaper than OSB or ply. Stud spacings immaterial and you get a nice smooth flat wall.
I have built many sheds like this. 4x2 frame with studs at 600 centres. I only use one noggin on an 8ft wall, mainly to keep it all in line whilst putting the frames up. Once the chipboard goes on it holds the whole frame rigidly together.
I tend to use a concrete base and simply bolt the base rails of the frames to the base using concrete bolts that screw directly into the concrete. Dpc under the rails and wide enough to leave a 30 mm lip on the outside, which then gets folded down under the membrane. Outside breathable membrane, battens then your choice of exterior board. Make sure the membrane overlaps the join between frame and concrete. Inside chipboard and you have 4 inches in the walls for insulation. Very easy to build the frames flat on the concrete base, then just lift them up and bolt together, or I use the Spax wafer head 6mm screws to join the frames. You can easily lift the frame for a 16x8 ft wall from flat to vertical on your own, but better with two. I tend to build the long wall frames one on top of the other on the base, oriented so each just needs to be lifted to the vertical. Then build the shorter frames on top. These can then be lifted off when you come to erect it. Again if you build them in the correct orientation then they just need sliding off and standing next to the base ready to go.
I place what will be my bottom rails on the base having first drilled 6mm holes through them. I then drill through with a 6mm masonry drill to mark the base. Make sure you mark the rails so you know which way round they go. Then drill out the holes in the concrete to suit the bolts, typically 10mm. Drill out the holes in the base rails with a spade bit to 20mm.
Once you have your four walls erected then you can move the structure to align the holes, the bigger base holes give you some wiggle room, and I use 50mm square thick washers under the bolt heads.
If you just want a functional building then this is a lot easier than all the faff of dwarf walls and so forth.
