I would like to build some wooden loading docks for several structures in HO. Is there a source that would give me an idea of the appropriate dimensions for the various parts of the structure? Should the vertical posts be 6x6, 8x8, etc? What size for the cross pieces, decking, and any diagonal bracing? All help will be greatly appreciated.
I am no expert. This is speculation so ignore it if you wish.
I don’t think that there is one single standard for building wood loading docks. I would suggest that you choose the dimensions of the lumber based on what the loading dock is expected to handle, weight wise.
I wouldn’t spend too much time deciding whether to use a 6x6 vs an 8x8 for a lighter duty dock. The actual difference in size will be hardly noticable. If it makes you feel more comfortable then use the larger size. If the dock is serving a heavy industrial factory, then 12x12s would obviously look better.
Keep in mind that the heavier duty the dock, the thicker the planking would be.
Loading docks are mostly custom made. Which means the “several structures” you’re talking about all are different. A lot depends on what kind of loads you put on the structure. If all you’re going to have is fork lifts, that’s not very much. If you’re backing a truck up it, it’s a lot more.
Here’s a shot of a what most model railroaders would call a loading dock, a free-standing one near a team track:
The posts seem to be 10" square. The beams look about the same in height. The diagonals look kind of random-y. The floor looks like 8 x 8’s.
I was writing mine as Dave posted his. We said the same thing. So that PROVES we’re right. And strikingly brilliant. And quite handsome. And very charming, and…
Isn’t it against the forum rules to tell absolute lies about people?!? Am I brilliant?!? Many would disagree! Am I handsome? That died a long time ago! Charming? I’m too old and crusty to charm anyone!!!
Many loading docks that were made by the railroads used old ties.
The dimensions of the average railroad tie is 9"(W) scale [7/64"] actual x 7" (D) scale [5/64"] actual and 8’-6" (L) scale [1-11/64"] actual.
An inexpensive option for this size of scale lumber is wooden Large Kitchen Matches.
Soak them in water to remove the flammable tips and then allow to air dry on paper towels.
Because of the random shape of the match sticks, it replicates the wear of used ties.
To replicate the creosote color I use Minwax wood stain.
I mix 3-parts Red Mahogany (#225) with 1-part Ebony (#2718).
Then I put the dried match sticks in a 1-quart zip-top freezer bag, add enough of the stain mix to coat, seal the bag and shake well.
With a nitrile gloved hand, I remove the stained ties, lay them in a single layer on several sheets of paper towel, and allow to air dry in a well-ventilated area (outdoors is best).
The remaining stain mix can be brushed on the structure as needed.