Rabbeted oblique scarf splice

(Okkake daisen tsugi)

This splicc can be used to join groundsills, girders or beams. The two ends of the joints are identical and referred to as the upper wood and lower wood. Two mortises are deepened through the depth of the splicc for inserting draw pins. The joint is assembled by sliding the internal face of the upper wood over the internal face of the lower wood, keeping the surfaces of the middle drops (surfaces "d") in close contact. The pieces are then pressed together and secured by pounding in two draw pins, effectively interlocking the front and back surfaces of the joint (surfaces "a"). The pins are inserted from the thicker end toward the thinner end, in an alternate fashion. Unlike other oblique scarf splices no axial shifting is required to assemble this splice, making it particularly suitable for installing or replacing a beam between fixed supports or a sill between anchored points. This rabbeted oblique scarf splicc could be more appropriately called "pinned rabbeted oblique scarf splice".

Japanese Scarf Joint

1 20 ndnatcn i 1

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For square sections between 105mm to 1 20mm, the length of tho splice should be 3

?f/4 to 4 times the width of the section.

Wood Beam Splice

Up per wood and lower wood

Rectangular Acrylic Base

The upper wood slides over the lower wood (the draw pins are shown to display the direction of insertion).

Up per wood and lower wood

Oblique Aproach Architectural Structure

© Completed splice. The draw pins are inserted.

The upper wood slides over the lower wood (the draw pins are shown to display the direction of insertion).

© Completed splice. The draw pins are inserted.

The (ensile test was also carried on an 105mm square section assembly made of black pine. An even bigger strength increase than that of the gooseneck splice was obtained. The joint failed at 4000kg by shearing through one of the adhesion planes.

Dial i m si

Dial gauge

,1

89 J 89

89 I 89

15

178

178

356

Test sample dimensions

Bat* ade sM

&al gauge

Test sample dimensions

Arrangements of dial gauges uacrjl AspiacOTerrt

Load Displacement Curve
Load-displacement curve

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Woodworking Tools and Installation Tips

Woodworking Tools and Installation Tips

There are a lot of things that either needs to be repaired, or put together when youre a homeowner. If youre a new homeowner, and have just gotten out of apartment style living, you might want to take this list with you to the hardware store. From remolding jobs to putting together furniture you can use these 5 power tools to get your stuff together. Dont forget too that youll need a few extra tools for other jobs around the house.

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