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4eEjဲЧաѢ٤ගฤ॰ (exploration
                     of voids)

                  5eAj୅ৰღᖟيܔͭวહஷ༸ (access
                     by selected debris removal)

                  6eTjღᖟي୅ৰ΂ਕʕ˟ -- ᆽႩաѢ
                     ٫Зໄ (terminate by general debris

                     removal)
            （二）木材特性：

                  1eภܔ˝ҿ˕ᅟٙͦٙ݊ʪ஢˝ҿٜۧ

                      ׵७ଣᏀຟdΪމ˝ҿ஗Ꮐຟึ೯̈
                      ኛࠪdཀ೻ᇠ࿔˲̙ཫԈΚᎈf˝ҿ
                      ˕ᅟٙ˴ࠅᎴᓃʘɓఱ݊ึ೯̈ࠪᚤ
                                                               ¸ ഐ࿴Ҧࢪ஢ˏᶡᑺ༆ήቤܔጘيٙഐ࿴ʱؓʿॎᕸࣛᏐءจԫධ
                      ᙆѓd຅˝ҿוա൴ཀࠋஃd˝ҿᜄ

                      ၪఱึᓙ൓೯̈૶౸ٙ൓කᑊࠪf̤
                      ̮d຅ழ˝฼ɿί൴ࠋஃࣛึ೯͛ᜊ
                      Җd̙˸ഗʚൖᙂᙆѓf

                  2e˝ҿϞ఻၇̰ࣖ˙όdܼ̍ :

                     €1̻Б׵७ଣᏀຟ
                           (Crushing parallel to the grain)
                     €2ٜۧ׵७ଣᏀຟ

                           (Crushing  perpendicular to the grain)
                     €3 ᛃϜ (Buckling )

                  3eމԣ˟˝ҿᛃұdӚϞ஗˕ᅟՑٙ˝
                      ҿڗܓ̀඲း̙ঐٙᐵ೵dஷ੬࿁׵
                                                               ¸ ऊԣ໇तฤඟ઺֜௓౽҃઺બ˝᎘ᇌۨ˕ᅟ
                      10cm x10cm ˝ҿڗܓࠅʃ׵ 2.5 ʮ

                      ˉf˝ҿٙڗܓၾ௰ʃٜࢰٙˢଟ஗
                      ၈މ L/D ˢଟdݒɿٙ L/D ˢଟᏐЭ
                      ׵ 25f(±Lj˝ҿڗܓeDj˝ҿ௰

                      ʃٜࢰ )

                  4e˕ᅟٙഐ࿴˕ᅟࠅ९jνዑ૑ձݒ
                      ɿ݊ίϞࠢٙ˕ᅟҿࣘʕ௰Ϟࣖٙ˕
                      ᅟࠅ९d˕ᅟٙࠋஃ༩ࢰᏐ༈݊ஹᚃ

                      ٙdу݊ਗ਼ࠋஃ੽ɪᄴܔጘيٙஃࠠ

                      ீཀ˕ᅟݒෂ༺Ցήֵࠦᄴf
                      ˕ᅟ዁Ъٙනҏdࡡۆɪ݊੽௰τΌ
                      ٙਜਹක֐዁ЪΎආɝՑ༰Κᎈٙਜ

                                                               ¸ ਷ყɛ༸ᇜଡ଼Νʠ՘ɢ݄Ъ˝᎘ᐍࠦ˕ᅟ



     34  工作研討 WORK DISCUSSION
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