Working Stresses of Philippine Woods at 80% Stress Grade

The accuracy of this page is not guaranteed. This post is for educational purposes only. Please refer to National Structural Code of the Philippines (NSCP) for reliable data.

Working Stresses for Visually Stress-Graded Unseasoned Structural Timber of Philippine Woods

Species 80% Stress Grade
Bending & Tension Parallel to Grain Modulus of Elasticity in Bending Compression Parallel to grain Compression Perpendicular to Grain Shear parallel to Grain
MPa GPa MPa MPa MPa
I. High Strength Group
Agoho 26.30 8.22 14.50 5.91 2.95
Liusin 25.00 9.36 15.60 4.31 2.64
Malabayabas 28.10 8.30 15.80 8.70 3.02
Manggachapui 25.80 9.63 16.00 6.03 2.78
Molave 24.00 6.54 15.40 6.34 2.88
Narig 21.80 8.33 13.70 4.91 2.61
Sasalit 31.30 9.72 21.60 10.20 3.38
Yakal 24.50 9.18 15.80 6.27 2.49
II. Moderately High Strength Group
Antipolo 18.60 5.35 10.80 3.90 2.06
Binggas 18.90 6.57 11.40 3.27 2.24
Bokbok 18.10 6.36 11.30 3.41 2.18
Dao 16.20 5.43 9.44 2.27 1.92
Gatasan 20.80 6.84 13.50 3.52 2.36
Guijo 21.80 8.47 13.20 4.26 2.40
Kamagong 20.90 7.20 11.70 4.39 2.47
Kamatog 19.00 7.56 11.20 3.95 2.35
Katmon 18.80 6.82 11.90 4.84 2.29
Kato 18.40 8.04 10.60 3.46 1.96
Lomarau 19.80 7.92 11.80 2.98 2.18
Mahogany, Big-leafed 16.50 4.66 10.50 3.83 2.71
Makaasim 20.50 6.72 11.40 3.70 2.40
Malakauayan 18.90 6.66 11.20 2.32 2.14
Narra 18.00 5.94 11.40 3.01 1.91
Pahutan 16.60 6.53 10.00 2.50 2.05
III. Medium Strength Group
Apitong 16.50 7.31 9.56 2.20 1.73
Bagtikan 16.60 6.48 9.89 2.33 1.82
Dangkalan 16.30 6.38 9.20 2.48 1.98
Gisau 14.30 5.33 8.16 1.99 1.90
Lanutan-bagyo 15.00 6.06 8.96 2.02 1.84
Lauan 13.90 5.83 8.18 1.72 1.48
Malaanonang 13.80 5.41 8.54 1.96 1.59
Malasaging 16.80 5.94 9.51 2.92 1.85
Malugai 15.40 6.30 9.33 3.07 2.07
Miau 15.70 6.50 8.83 2.78 2.06
Nato 16.20 5.56 9.17 2.33 1.98
Palosapis 13.80 5.98 8.38 2.73 1.68
Pine 14.70 6.66 8.29 1.88 1.56
Salakin 15.70 5.67 8.83 2.94 1.88
Vidal lanutan 19.50 5.83 8.54 2.65 2.39
IV. Moderately Low Strength Group
Almaciga 11.80 5.47 6.27 1.44 1.47
Bayok 12.60 4.75 7.33 1.30 1.20
Lingo-lingo 13.20 4.13 6.85 2.00 1.66
Mangasinoro 12.80 5.36 7.46 1.97 1.44
Raintree 11.60 2.75 7.23 3.32 2.07
Yemane 12.60 4.09 7.87 3.40 1.96