We built the ramp so that it could handle far more weight than we would need it to and would last a long time out in the weather. The tools we used and type of screws are shown in the pictures.
We decided to build a 4′ long by 5′ wide wood ramp. Building materials we used: pressure treated (4) 2″x6″x10′, (1) 2″x12″x12′, (1) 2″x12″x8′, and a box of 3″ exterior grade screws. Started by cutting the 2″x12″x12′, into three 4′ boards.
Next, we cut the 2″x6″x10′ boards in half making eight 5′ boards.
Next we took the three 2″x12″x4′ boards and drew cut lines from the top corner of one end down to 1″ above the bottom of the opposite diagonal corner. We wanted to leave at least 1″ of material on the bottom for strength and screw attachment.
From there we made cut lines for saddling the center 2″x12″x4′ board in order to place additional 2″x6″x5′ boards under the ramp for bracing. After all the lines were drawn we cut the boards; using a jig saw for the saddle cuts.
Then we laid out the three 2″x12″x4′ boards making sure to place the center board in the center, and then laid the 2″x6″x5′ boards perpendicular across them leaving about a 1/2″ gap between each 2″x6″ board. Leaving a gap between the top boards allows for rain, snow, ice, mud, etc. to not create a slick sheet type surface. We attached the boards together using 2 screws at each board end and 2 screws in the center (6 total per board).
Next we cut the remaining two 2″x6″x5′ boards to fit in between the two outside angle cut ramp boards and attached the boards to the bottom sitting them inside the center board saddles. Again using 2 screws at each board end and 2 screws in the center. After this we cut the 2″x12″x8′ board 5′ long and attached it at the bottom of the ramp.
Lastly, we leveled the gravel where the ramp would set and then placed it into position.