Column splices

(Hashiro tsugi)

(1) Four faccs gooscncck splicc

Two goosenecks are carved diagonally across the section. The male and female slide over each other at 45* to assemble the splicc. The two goosenecks are small in relation to the size of the section. Skillful craftsmanship is required while manufacturing. This splicc is suitable for large columns. Hard wood, such as zclkova, is often used. The peculiarity of this splice is the identical gooseneck motif found on all faccs of the column.

Japanese Column Splice

Male

Female

Male

Female

O The male slides into the female diago- 0 Same nally. _ _
Japanese Beam SpliceJapanese Column Splice

(2) Ciam-shapcd splice (kai no guchi) elements such as the central column in a

This relatively long splice has a few pagoda. Both ends exhibit a "French type"

exclusive applications. Twice the length of tenon and mortise pattern. Finally to stiffen the splice is required in assembling which is the assembly, a steel ring may slide over the very inconvenient for underpinning. It is joint. The splice is polished with sand-

usually reserved for splicing distinguished paper.

SPLICE 39

(3) Blind splice (hako tsugi)

This splice is inferior in strength to the rabbeted oblique scarf splice because of the method used to lock the joint. A key contributes little to the sturdiness of the assembly compared to a draw pin. The key hole and the longitudinal joint line arc positioned at the corner of the section making this splice very attractive on columns.

SPUCE 41

0 Upper wood and lower wood

SPUCE 41

© The upper wood slides over the lower wood.

O Inserting the key

® Same from a different perspective © The splice is completed
Basara Tsugi

Malo

(4) Osaka Castlc-Otcmon Gale's pillar splice

Otemon gate is the only known example of this design. Once assembled, a decorative mountain skyline like pattern can be seen on the surface. An X-ray test had to be carried out to investigate the internal struc ture of the splice. No gap exists between the two parts.

Malo spuce 43

Ai

Male and female (left: upper part of the column, right: lower part of the column)

The male is inserted into the female by sliding it upward from the center to the edge.

Male and female (left: upper part of the column, right: lower part of the column)

The male is inserted into the female by sliding it upward from the center to the edge.

Tabled Splice Joint Japanese Name

Same

O Completion

Same

O Completion

X-ray picture A

The bright lines are the internal parts of the joint and display the outline of the dovetail.

X-ray picture A

The bright lines are the internal parts of the joint and display the outline of the dovetail.

X-ray picture B

The axial black lines display the grain of the wood. Tho horizontal lines and the mountain shaped lines are the upper face of the male on the inside and the seam on the outside surface.

CONNECTING JOINTS

Half dovetailed joint

(Katasage arl)

dovetail connects a single tic into a corner column. The diagram below shows a tic connecting into a column from two opposite sides.

The model depicts a wall tic connecting into a corner column. The column was split in half lengthwise to reveal the internal locking mechanism. Wall tics arc usually covered up, however, traditional Japanese architecture sometimes call for exposed tics. The wedges, somewhat longer than necessary, arc driven in as deep as possible to avoid rattling. First, the columns are erected, then the ties arc inserted to prevent horizontal movement. Wedges arc driven in after the erection is completed. Braced walls help resisting horizontal earthquake loading in Japanese wood architecture. The half

Wall purlin on two opposite sides of a column
1 C

Elevation

Ran, bottom vew

0 The brace is inserted into the slot.

Arrangement of the members

0 The brace is inserted into the slot.

The brace is inserted in its final position O The joint is completed by driving in the opening a space for a wedge. wedge.

CONNECTING JOINT 02

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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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