The honest take

What the plan doesn't tell you

• This table will be extremely heavy. You’ll need at least one other person to help flip and move the components, especially when attaching the 115-inch top.
• Keeping the tabletop boards flat and aligned during glue-up is the hardest part. Use cauls across the top and bottom to ensure a level surface and prevent bowing.
• The leg assemblies must be perfectly square. If they aren’t, the entire table will be unstable. Dry fit everything and use a large framing square before driving any screws.
• Since there are no assembly steps, you must plan your entire sequence before you start. A mistake in the order could mean taking things apart, which is tough on pocket-screwed joints.

This is a big table at nearly 10 feet long, and relying only on pocket screws for the main structure is a potential weakness. You'll need to be meticulous with your joints and use a good quality wood glue to prevent racking over time. The pine or fir recommendation is fine for the style, but the biggest problem is the lack of assembly instructions. Without a guide, this project is more advanced than intermediate, as you'll have to figure out the build order yourself.

Who it's for

Who should build this — and who should skip it

A good step-up build — fine if you've made a few things and own a drill/driver and a way to cut straight. A real dining table you can eat at and lean on every day. Skip it if you need it to carry much past ~300 lb.

The checks

What we checked, and what held

Holds ~300 lb safely

Finished size 30.5H x 115W x 46.25D

Suitable for light household use; avoid concentrated overloading.

Governing member: Underframe side rail
Material: Pine
Cross section: 1.50 in × 3.50 in
Orientation: On edge
Clear span: 36.0 in
Load applied: 120 lb
Measured sag: 0.0529 in
Working load: ~300 lb
Finished weight: 141.8 lb

Load case ~120 lbs on this member - its share of a ~300 lb load on the whole piece

Every check the analysis ran, and how it came out
Check	Result
Bending in the underframe side rail — 47% of allowable	PASS
Sag in the same member — L/681 against an L/120 limit	PASS
Right Table Breadboard Right	PASS
Front Table Underframe Long Side Front	PASS
Back Table Underframe Long Side Back	PASS
Table Underframe Cross Piece 1	PASS
Tip-over resistance, unloaded — ratio 4.37 against a 1.0 target	PASS

Conservative run Checked a second time against stricter standards, the same member reads L/454 at 71% of allowable — PASS

Model coverage 32% of this design resolved to a load path down to the ground in our model (10/31 surfaces have load path to ground). Parts outside that path were checked for their own strength but not for what they carry.

Engineering Notes

The structural reality. We checked the part that works hardest here — the pine underframe side rail — as a loaded beam over its real working span. Under a realistic in-use load it barely flexes — well within furniture limits, deflecting only about 1/681 of its span, with bending stress at roughly 47% of what the wood allows. In short, it should feel firm and stay that way.

Sound for normal use — just don’t overload it. Our conservative estimate puts the safe working load at ~300 lbs — enough for everyday meals and projects — even someone perching on the edge. Real-world strength depends just as much on assembly: glue every joint, keep the frame square, and drive your fasteners fully home.

These are planning estimates, not a stamped engineering analysis. Wood varies board to board — for anything safety-critical, check with a qualified pro.

Furniture mode, analysis v7.0. Planning estimates — check anything safety-critical with a qualified pro. How we analyze plans.

Build tips

Before you build

Build the two end-leg assemblies first as complete, square units. It's much easier to connect these two finished sub-assemblies with the long aprons than to build the whole base piece by piece.
Consider adding metal corner braces inside where the aprons meet the leg assemblies. This adds significant strength against racking forces, which is important for a table this large.
Use a socket wrench for the lag bolts attaching the base to the top, not an impact driver. This gives you better control to avoid overtightening and stripping the wood.

Reference

Materials & cut list

Lumber & sheet goods

2x10x8′ Pine (qty: 7)
2x8x8′ Pine (qty: 4)
2x4x10′ Pine (qty: 2)
2x4x8′ Pine (qty: 9)
4x4x8′ Cedar (qty: 7)
1x4x8′ Pine (qty: 2)

Hardware

2-1/2 in pocket hole screws (qty: 150)
2 in wood screws (qty: 50)
3-1/2 in wood screws (qty: 100)
4 in No.2 10×4 construction screws (qty: 25)
6 in L-brackets (qty: 8)
5 in bolts (qty: 24)
Nuts for 5 in bolts (qty: 24)
Washers for 5 in bolts (qty: 24)
Wood glue
Pre-stain conditioner
Gray stain
Matte top coat
150 grit sandpaper

View Full Cut List & Materials

Part Name	Qty	Dimensions	Material
Table Breadboards	2	46.5" x 9.25" x 1.5"	2x10 Pine
Table Underframe Long Sides	2	111" x 3.5" x 1.5"	2x4 Pine
Table Underframe Cross Pieces	5	36.5" x 3.5" x 1.5"	2x4 Pine
Bench Long Stretchers	4	87" x 3.5" x 1.5"	2x4 Pine
Bench Cross Supports	6	9" x 3.5" x 1.5"	2x4 Pine
Base Support Blocks	4	6" x 3.5" x 1.5"	2x4 Pine
Base Support Blocks	6	10" x 3.5" x 1.5"	2x4 Pine
Bench Legs	8	18.25" x 3.5" x 3.5"	4x4 Cedar
Table Base Centerpiece Top/Bottom	2	18" x 3.5" x 3.5"	4x4 Cedar
Table Base Crosspiece Diagonals	4	43.5" x 3.5" x 3.5"	4x4 Cedar
Small Support Blocks	4	4" x 3.5" x 0.75"	1x4 Pine

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Original plan

About this design

This design is A House We Built’s work, not ours. We review free DIY plans and add the engineering: load paths, spans, joints, and the fixes worth making before you cut. We do not republish the build instructions. For the steps, the photographs and the author’s own notes, go to the source.

Read the original plan at web.archive.org

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