Solid Wood Products 



2563 



Table 22-5 — Manpower, energy, and capital costs of homehuilding — per lOO-square- 

 foot section — including logging (or extraction), manufacture, transport to house site, and 



erection (Boyd et al. 1977) 



House portion and construction type 



Net 

 Manpower Energy' 



Capital 

 Depreciation 



Man-hr Million btu Dollars 



Roofs 



1 . W-type wood truss with wood shingles 8.96 2.44 6. 14 



2. Same but with asphalt shingles 9.04 3.22 6.72 



3. Steel rafters (flat roof) 9. 17 5.11 6.38 



4. Flat roof with LVL" rafters and flakeboard"^ 9.36 2.45 6.59 



Exterior walls 



1. Plywood siding (no sheathing), 2 x4 frame 7.99 1.99 4.15 



2. Medium-density fiberboard siding, 



plywood sheathing, 2x4 frame 9.86 2.54 6.41 



3. Medium-density fiberboard siding, '/2-inch 



insulation board, and plywood corner bracing . 9.26 2.69 6.71 



4. Concrete building block, no insulation 18.45 16.53 5.56 



5. Aluminum siding over sheathing 9.83 4.95 4.61 



6. MDF siding, sheathing, steel studs 9.89 4.79 7.20 



7. MDF siding, sheathing, aluminum framing 1 1.26 5.53 6.91 



8. Brick veneer 22.00 17.89 8.37 



Interior walls 



1. Wood framing 3.87 0.95 2.17 



2. Aluminum framing 3.99 2.25 2.13 



3. Steel framing 3.53 1 .88 2.25 



Floors 



1. Wood joist, plywood subfloor. and 



particleboard underlayment 9. 15 2.85 7.58 



2. Wood joist, plywood subfloor, oak finish floor. . . 8.51 1.19 6.40 



3. Wood joist, "single-layer floor" 7.77 2.09 6.32 



4. Concrete slab 11.62 22.06 11.81 



5. Steel joist, 2-4-1 plywood 11.97 23.26 16.34 



6. LVL joist and flakeboard 7.76 2.05 7.23 



'Energy from wood residues credited only against gross energy requirements of manufacturing 

 phase, not against logging or transport of wood components. 

 Laminated veneer lumber. 

 ''Erection costs unavailable. Approximations based on similar construction were used. 



