2880 



Chapter 23 



DRY, SEMI -DRY 



300 



400 



500 



600 700 800 



MODULUS OF ELASTICITY 



900 

 ( 1,000 PSD 



Figure 23-103. — Modulus of elasticity in bending of V4-inch-thick commercial hard- 

 boards tested at 6 to 8 percent moisture content. (Top) Eleven tempered hardboards. 

 (Bottom) Three standard hardboards. See table 23-11 for descriptions of boards 

 tested. (Drawing from Suchsland and Woodson 1985, based on data from Werren 

 and McNatt 1975, text footnote 5.) 



I '\ TEMPERED 



SIS 



S2S 



- DRY, SEMI -DRY 



3,000 4j000 5.000 6,000 7,000 8,000 9,000 10,000 



i %: ! 



Jz^ 



/\ 



A 



■A 



\ STANDARD 



\ 



3,000 



4,000 



5,000 6P00 7,000 8,000 



MODULUS OF RUPTURE (PSI) 



Figure 23-104. — Modulus of rupture of y4-inch-thick commercial hardboards tested at 6 

 to 8 percent moisture content. (Top) Eleven tempered hardboards. (Bottom) Three 

 standard hardboards. See table 23-11 for descriptions of boards tested. (Drawing 

 from Suchsland and Woodson 1985, based on data from Werren and McNatt 1975, 

 text footnote 5.) 



