/ 2/1 * * * * * 2/2 2/2/1 : (21)

: :( ) : ( 1 ) : . ( 2 ) : . ( 3 ) : . () : : ( 1 ) ( 2 ) ( 3 )

(22) (plywood) . (Blockboard & Laminboard) . (Chipboard) .

2/2/2 : ( ) : ( 2 ) . () : . ( 2 ) ( ) ( ) 4 5 6 8

() (Mechanical Properties) :

(23)

( 1 ) ( 3 ) . ( 4 ) . ( 2 ) ( 3 ) . ( 3 ) . ( 3 ) ( / ) ( / ) 7300 0.60 6.00 1.8 7.20

(24)

( 4 ) ( 3 ) ( ) 0.970.970.700.670.8610050 1.001.000.910.671.00 2/2/3 ( ) : : :* . . * . .

(25)

* . * . * . () : ( 5 ) . () : ( 6 ) . .

* ( 5 ) ( = 1000 )

(26)

( I b / Q) ( KS) ( I ) ( A ) ( I b / Q) ( KS) ( I )

(A) 2 / 2 /2 3 4 2 2 3 4 2 3 38.93.97-96813661441461736021229027666.30.2486.40.250 52.385.34-284954622500717267203687127667.50.2949.50.3753 71.837.32655880642458127111022914301105150412111.40.45012.70.5003 86.798.8582991258161451344413317191401761614826120.47215.90.6255 104.75 10.681024620806127000445316677243012690216104150.58919.00.7505 124.2112.66120582914021439767711740529409379634622715.40.608220.8755 143.6614.64161764000034549474871879539247577644799321.50.846251.0005 158.6316.171911349355491612777520914451617483438158220.865291.1255

(27)

( 6 ) Modulus of Elasticity / 2 Rolling Shear / 2 Bearing on Face / 2 Bending / 2 11 0.4 1.5 11 ( ) : [ ( 7 ) ]

( 7 ) ( ) 1.50 2.45 3.65 4.85 6.00 0.60 0.90 1.80 2.45 3.65 3 3 3 5 5 6.5 9.5 13.0 16.0 19.0

2/3 2/3/1

(28)

. 2/3/2 ( 8 ) . ( 8 ) Punch Shearing Strength / 2 / 2 / 2 / 2( ) 39 39 39 31 28 68 68 68 64 57 35.165 35.165 32.864 29.823 27.217 2.979 3.275 4.843 6.534 8.484 2.5 3.0 4.5 6.25

7.75

2/3/3 ( 9 ) . ( 9 ) ( ) ( ) ( )( )( )( )( ) 100 150 250 400 150 230 360 500 180 360 550 760 230 400 630 900 3.00 4.50 6.25 7.75

(29)

( 9 ) :

(Room Temperature) .:* .:* .:*

(30)

2/4 2/4/1 :* : BS 4 BS 1449 BS 4848 BS 2994 * : part 1 : Part 1

: ASTM A6

*

: 1022) Angle Profiles (DIN (DIN 1028) Angle Profiles (DIN 1029) Angle Profiles (DIN 1024) T Bars (DIN 59051) T Bars (DIN 1025) I Beams (DIN 1026) channels (DIN 1027) Zeds (DIN 59200) Plates : (JIS (JIS (JIS G 3192) G 3193) G 3194)

*

2/4/2 [ ( 2/4/1 ) ] : * * * * (JIS - G 3106)

(31) (ASTM (DIN (JIS (BS 4360) A 36) 17100) G 3101)

2/4/3

(Fixing Accessories) : (Rivets) (Bolts & Screw) (Nuts) :* : (BS (BS (BS (BS (BS (BS (BS * 3139) 3294) 3692) 4190) 4320) 4395) 4620)

: A 325) A 490) A 502) : (DIN 124) (DIN 674) (DIN 6914) (DIN 7968) (DIN 7990)

(ASTM (ASTM (ASTM *

(32)

2/4/4 :* * * * * * * * . 2/4/5 : (Form Tie) 2.00 (Form Anchor) 3.00 2/5 . ( 10 ) . ( 10 ) / 2 / 2

/ 2 / 2 * 71 71 180 150 73 250 210 280 240 6061 6063 * T6 T6 (ASTM Part 7)

2/6

(33)

. 2/7 2/7/1 : ( ) . () . () . 2/7/2 (Lateral Bearing) : ( ) (Single Shear) : ( 1 ) :(1) := ( 12 )

= = [ (11 ) ] .

(34)

.

( 2 ) ( 2 ) . ( 3 ) . ( 4 ) .

(35)

( 5 ) ( 12 ) : . .

( 3 ) ( 11 ) (K) K (Ash) (Commercial White) ( ) (Beech) ( ) (Birch) (Hickory & Pecan)

(36)

(Oak, Red & White) (Larch) (Douglas Fir) (Southern Pine) (Tupelo) (Northern Aspen)

( ) (California Redwood, Close Grain ) ( ) ( Douglas Fir, South) (Eastern Hemlock) (Tamarack) (Eastern Spruce) (Hem Fir) (Mountain Hemlock) (Northern Pine) ( Ponderoza Pine Sugar Pine) (Red Pine) ( Spruce Pine Fir) (Western Hemlock) (Yellow Poplar) (Aspen)

(Balsam Fir) ( California Redwood Open Grain) ( Cotton Wood, Black) ( Cotton Wood, Eastern) ( Eastern White Pine) (Engelman Spruce) ( Northern Species) ( Northern White Cedar) (Western Cedars) (Western White Pine) : 1 ( 5 ) 2 (K) . ( 12 ) ( ) ( ) 14D13D11D10D

(37)

40.2 42.7 46.6 48.0 52.6 57.6 62.9 68.3 73.6 80.0 86.8 37.3 39.6 43.3 44.6 48.9 53.5 58.4 63.4 68.4 74.3 80.6 31.6 33.5 36.6 37.7 41.4 45.3 49.5 53.6 57.8

62.9 68.2 28.7 30.5 33.3 34.3 37.6 31.2 45.0 48.8 52.6 57.2 62.0 2.87 3.05 3.33 3.43 3.76 4.12 4.50 4.88 5.26 5.72 6.20

(38)

() (Double Shear) : ( 1 ) . .

(4)

( 5 ) (a / b)

(39)

( 2 ) . ( 3 ) . . . . ( 4 ) (End Grain) . () :( 1 ) = . ( 2 ) . ( 3 ) . 2/7/3 (Withdrawal Loads) : ( ) .

(40)

() :(2) := ( 11 ) = = / . () = . ( ) . ( ) .

. () . 2/7/4 : ( ) ( ) . ( ) ( ) .

(41)

() : ( ) ( 2/7/4 ) . (Shear Connectors) (Steel Plates) . __________________________________________________ * D = .