← Thoreau’s house at Walden

Thoreau’s house at Walden — materials

A rough list to take to a sawmill. The frame is cut green — full-sawn timbers straight from the log — and pinned with dry oak pegs: as the timbers dry they shrink onto the pegs, and the drawbored joints pull tighter. The mill cuts every stick to its section and length; the framer cuts the joints.

Each length is the piece’s cut length plus 10 in for tenons and trimming, rounded up to the foot. A piece longer than 24 ft is ordered in two or more lengths joined by a scarf (A2-16), except a post or a rafter is not scarfed. Board feet are full-sawn: width × depth × feet ÷ 12. Sizes follow the model, which is proportioned from measured drawings, not engineered — a frame that will carry a load is sized by an engineer first.

Section (in)Length (ft)PiecesBoard feetFor
6 × 6164192sill, front wall · sill, rear wall · wall plate
6 × 6108240sill, gable end · wall post, front and rear walls (corner and bent) · gable top girt at the plate line, door end · gable top girt at the plate line, chimney end
4 × 61112264first-floor joist, sill to sill · first-floor chimney trimmer · garret floor joist, beside a rafter
4 × 65440garret tail joist at a chimney · garret chimney header
4 × 64216first-floor tail joist at a chimney
4 × 63212first-floor chimney header
3 × 51014175common rafter (45.0°, 12/12)
3 × 58220common rafter, headed off at a roof opening
3 × 55212roof header at a chimney
3 × 41022220wall stud, front and rear · opening jamb stud, full story · gable stud
3 × 45420gable stud above the plate line, top cut to 12/12
3 × 44728opening header · window rough sill · cripple stud, under a rough sill or over a header
3 × 43412gable stud above the plate line, top cut to 12/12
3 × 4224cripple stud, under a rough sill or over a header

1,256 board feet of green timber in 89 pieces.

Pegs: 27 of dry oak, 1 in by 8 in, estimated joint by joint — order a tenth over. Keys: 6 dry oak keys for the tusk tenons.

Boards: floors about 253 sq ft at 1 in thick (≈253 board feet); roof boards about 233 sq ft at 1 in (≈233 board feet). Add for waste.

Not in this list: stone, brick and mortar; siding, trim, windows and doors; roofing; nails. Nothing here is priced.

Cut list, piece by piece
PieceQtySection (in)Cut length (in)Ends
Sill, front wall16 × 6180A6-17 corner · A6-17 corner
Sill, rear wall16 × 6180A6-17 corner · A6-17 corner
Sill, gable end26 × 6108A6-17 corner · A6-17 corner
First-floor joist, sill to sill54 × 6112A4-14 cogged over the inner half of the sill · A4-14 cogged over the inner half of the sill
First-floor chimney trimmer14 × 6112A4-14 on the sill · A4-14 cogged over the inner half of the sill
First-floor chimney header24 × 624A2-08 tusk tenon into the trimmer · same
First-floor tail joist at a chimney24 × 634A4-14 on the sill or the spine · A3-16 dovetail into the header
Wall post, front and rear walls (corner and bent)46 × 698A6-22 foot on the sill · A6-02 head tenon into the plate; A6-05 girts housed and pegged
Wall stud, front and rear103 × 498A2-07 stub tenon into the sill · A2-07 stub tenon into the plate or top girt
Opening jamb stud, full story63 × 498A2-07 stub tenon · A2-07 stub tenon
Opening header33 × 431 – 37A2-07 into the jamb · same
Window rough sill23 × 437A2-07 into the jamb · same
Cripple stud, under a rough sill or over a header43 × 48 1/2 – 33 1/2A2-07 stub tenon · butts the rough sill or header
Gable top girt at the plate line, door end16 × 6108A6-05 into the corner post · A6-05 into the corner post
Gable stud63 × 498A2-07 stub tenon into the sill · A2-07 stub tenon into the plate or top girt
Gable stud above the plate line, top cut to 12/1283 × 423 1/2 – 47 1/2A2-07 stub tenon into the top girt · birdsmouthed under the end rafter
Gable top girt at the plate line, chimney end16 × 6108A6-05 into the corner post · A6-05 into the corner post
Wall plate26 × 6180A6-02 on the post heads · same
Common rafter (45.0°, 12/12)143 × 598 3/8A6-20 seat on the plate, 6 in tail · A6-44 foot lapped to the joist beside it, pegged · A6-19 at the ridge
Common rafter, headed off at a roof opening23 × 581 3/8A6-20 seat on the plate, 6 in tail · A6-44 foot lapped to the joist beside it, pegged · A3-16 into the roof header
Roof header at a chimney23 × 547 5/8A2-08 tusk tenon into the trimmer rafter · same
Garret floor joist, beside a rafter64 × 6120on the wall plate · A6-44 the rafter's foot lapped into its side, pegged · on the far plate
Garret tail joist at a chimney24 × 648on the plate · A3-16 into the header
Garret chimney header24 × 642 5/8A2-08 tusk tenon into the joist · same