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How to Build a Campfire Bench

Simple, sturdy bench that'll last a long, long time

FH13MAY_SBENCH_01-2Family Handyman

This simple, sturdy campfire bench is perfect for the back yard or cabin. Build it with your kids this weekend and it’ll last for their kids.

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Time
One day
Complexity
Moderate
Cost
$20 – $100

Simple enough for kids, tough enough for camp, perfect for your yard!

The finished product at work

We’ll show you how to build a campfire bench that’s sturdy enough for kids, and durable enough to be abused by their kids someday.

Our photographer, Tom Fenenga (he’s the one with the striped shirt and big grin), is very involved with his son Adam’s Boy Scout troop. Tom wanted to teach the scouts about construction, and they needed benches around the fire pit at the scout camp they visit each year. So we came up with this design. They’re simple enough for teenage boys to build, tough enough to handle their roughhousing and economical enough at less than $100 each. You could build one in a Saturday.

We decided treated wood was a must—along with exterior 3-in. deck screws rated for treated wood. And the benches had to be embedded in concrete in the ground to keep them from being “relocated.”

Figure A: Scout bench

Assemble the legs

Photo 1: Screw together the leg units

Screw the parts together with two 3-in. deck screws at each joint. Draw guidelines alongside the 4x4s to use for the other set of legs. Center the base piece and make the seat support flush with the top of the front 4×4 and square to the back one. Flip the assembly over and screw the second base piece and seat support onto the other side of the legs.

Photo 2: Bolt the seat supports to the 4x4s

Bore through both seat supports and the 4x4s with a 3/8-in. spade bit. Connect the parts with 8-in. carriage bolts.

Start by cutting all the parts to length, following Figure A and Photos 1 and 2. Then pre-assemble the legs with screws. You can do this in your shop or garage where you have a flat surface.

Place a plywood scrap under the first set of legs and position the 4x4s following the measurements in Photo 1. Outline those positions so you can use them as a pattern for the other set of legs to be sure they match perfectly. Keep the screws away from the center of the 4×4 so you don’t hit them when you drill holes for the carriage bolts.

Drill and bolt together the seat supports and 4x4s. You can buy a special 1/2-in.-dia. x 12-in.-long spade bit or extend a standard-length spade bit with a magnetic bit holder (Photo 2).

Brace it temporarily

Photo 3: Brace the legs

Cut the three untreated 2x4s to 4 ft. and screw them to both ends of the feet and the front of the seat supports. They’ll serve as temporary braces while you attach the bench seat and backrest boards.

Set the legs on a level surface, spacing them 4 ft. apart, and temporarily brace both ends of the base pieces and the front of the seat supports with 2x4s (Photo 3). That’ll hold everything together with the proper spacing while you attach the seat and back boards. Once they’re screwed on, remove the braces.

Attach the seat and back

Photo 4: Add the seat and back

Cut the seat boards to 72 in. Evenly space the ends of the seat boards from the edges of the legs. Screw the boards to the seat supports with 3-in. deck screws: two in each 2×4 and three in each 2×10. Space the boards with a carpenter’s pencil.

Photo 5: Screw on the seat supports

Screw the seat supports to the middle of the seat and back, then remove the temporary braces.

Evenly space the seat boards from the edges of the seat supports and screw them to both seat supports with 3-in. deck screws: two screws into each support for the 2x4s and three for the 2x10s. Place a carpenter’s pencil between the boards to space them (Photo 4). Flip the bench upside down, center the back supports and attach them with 3-in. screws (Photo 5). Run those in at an angle so the tips won’t penetrate the seat and back (or your seat or back).

Dig the trenches and add the concrete

Photo 6: Dig the trenches and install your bench

Position and mark the trenches and dig them about 8 in. deep. Rest the bench in the trenches. Check the bench for level and height, then remove it and adjust the soil levels as necessary. Pour 1-1/2 bags of concrete mix beside, between and over each base and cover with soil. Pour a couple of gallons of water over the dry mix and backfill the trenches.

Set the bench exactly where you want it and outline the trenches around each base. Then set the bench aside and start digging (Photo 6). Your goal is to have a level bench with the seat about 15 in. above the ground at the front—the typical height for benches. But once you achieve that, just sit on the bench. You might want it lower, higher or reclined a bit more. Get it just the way you like it.

Then mix up three bags of concrete mix and pour half over each base, filling the space between and alongside. Throw any extra over the top. Then backfill the holes, wait a few hours, start the campfire and roast some hot dogs and marshmallows.

Additional Information

Required Tools for this Project

Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration.

  • Circular saw
  • Drill bit set
  • Drill/driver - cordless
  • Extension cord
  • Framing square
  • Hearing protection
  • Safety glasses
  • Sawhorses
  • Screw gun
  • Speed square
  • Tape measure

Required Materials for this Project

Avoid last-minute shopping trips by having all your materials ready ahead of time. Here’s a list.

  • 1/2"x8" carriage bolts
  • 2x4s
  • 3-in. deck screws
  • Concrete mix
  • Treated 2x10s
  • Treated 2x4s
  • Treated 4x4s