2552 



Lumber and residue yields in crosstie 



manufacture 2675 



Concrete crossties 2675 



Landscape ties 2676 



MINE TIMBERS 2678 



Mine timber specifications 2679 



Species preference 2679 



OTHER TIMBERS 2682 



HIGHWAY POSTS 2683 



Impact strength of wood and steel posts 2683 



Machine driving of pressure-treated 



wood posts 2683 



Damage to wood and steel posts during 



driving 2684 



Comparison of installed costs of wood versus 



steel guardrail posts 2684 



Strength of roundwood compared to sawn posts 



of three species 2684 



FENCE POSTS 2685 



Fence post size 2685 



Species preference and durability 2687 



Strength of hickory , oaky and pine 



fence posts 2687 



Machine driving offence posts 2687 



POLES AND PILING 2688 



RIVER-BANK AND ROAD MATS 2688 



STRUCTURAL LUMBER 2689 



STRUCTURAL PLYWOOD 2692 



Yield of structural veneer from trees of 



four southern hardwoods 2693 



Yield of veneer from grade 3 Appalachian logs 2693 



Gluing of oak faces to less dense hardwood 



inner plys 2694 



Weight of hardwood plywood 2695 



Face-glued blockboard 2695 



LAMINATED BEAMS AND LUMBER 2697 



Flat-grain white oak versus vertical-grain 



for lamination 2698 



Effect of laminae thickness and width on glue-line 



durability 2699 



Effect of laminae thickness on beam strength 2699 



Safe bending radius for white oak laminae 2699 



Effect of water soaking on strength of 



laminated beams 2699 



Effect of preservatives on shear strength 2699 



Strength of laminated oak beams 2699 



