![Monostruct Office by Masato Sekiya](https://static.dezeen.com/uploads/2011/09/dezeen_Monostruct-Office-by-Masato-Sekiya_05.jpg)
A Mono Struct Office by Masato Sekiya
Japanese architect Masato Sekiya has slotted one timber structure inside another to construct a law firm in Nara.
![Monostruct Office by Masato Sekiya Monostruct Office by Masato Sekiya](https://static.dezeen.com/uploads/2011/09/dezeen_Monostruct-Office-by-Masato-Sekiya_01.jpg)
The building is named Mono Struct Office, as it was built using cyprus planks of a single standard size.
![Monostruct Office by Masato Sekiya Monostruct Office by Masato Sekiya](https://static.dezeen.com/uploads/2011/09/dezeen_Monostruct-Office-by-Masato-Sekiya_02.jpg)
Individual planks clad parts of the exterior, while groups of two or three are bolted together to provide a structural frame.
![Monostruct Office by Masato Sekiya Monostruct Office by Masato Sekiya](https://static.dezeen.com/uploads/2011/09/dezeen_Monostruct-Office-by-Masato-Sekiya_03.jpg)
Plaster covers the walls of the outer shell, which houses office workstations.
![Monostruct Office by Masato Sekiya Monostruct Office by Masato Sekiya](https://static.dezeen.com/uploads/2011/09/dezeen_Monostruct-Office-by-Masato-Sekiya_09.jpg)
The exposed timber inner structure is set at an opposing angle and encloses a kitchen, a storage room and a conference room.
![Monostruct Office by Masato Sekiya Monostruct Office by Masato Sekiya](https://static.dezeen.com/uploads/2011/09/dezeen_Monostruct-Office-by-Masato-Sekiya_10.jpg)
Horizontal slit windows puncturing the walls of this room provide glimpsed views out to the adjacent road.
![Monostruct Office by Masato Sekiya Monostruct Office by Masato Sekiya](https://static.dezeen.com/uploads/2011/09/dezeen_Monostruct-Office-by-Masato-Sekiya_08.jpg)
A few projects by Masato Sekiya have been featured on Dezeen, including another building held together by bolts – see that story here, and see all of the stories about Sekiya here.
![Monostruct Office by Masato Sekiya Monostruct Office by Masato Sekiya](https://static.dezeen.com/uploads/2011/09/dezeen_Monostruct-Office-by-Masato-Sekiya_07.jpg)
Photography is by Yasutake Kondou.
![Monostruct Office by Masato Sekiya Monostruct Office by Masato Sekiya](https://static.dezeen.com/uploads/2011/09/dezeen_Monostruct-Office-by-Masato-Sekiya_06.jpg)
Here's some more information from Sekiya:
A Mono Struct Office
Planet Creations original concept of monostruct uses a single size of wood plank for all of the wooden construction -- doubling or tripling for strength, and bolting joints with metal parts.
![Monostruct Office by Masato Sekiya Monostruct Office by Masato Sekiya](https://static.dezeen.com/uploads/2011/09/dezeen_Monostruct-Office-by-Masato-Sekiya_04.jpg)
This office for a legal scrivener is made of two monostructures combined, clasping one into the other.
![Monostruct Office by Masato Sekiya Monostruct Office by Masato Sekiya](https://static.dezeen.com/uploads/2011/09/dezeen_Monostruct-Office-by-Masato-Sekiya_11.gif)
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One is a box-like structure of horizontal mono-structs, shortened here and there to form an irregular mozaic of space.
![Monostruct Office by Masato Sekiya Monostruct Office by Masato Sekiya](https://static.dezeen.com/uploads/2011/09/dezeen_Monostruct-Office-by-Masato-Sekiya_12.gif)
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The outside monostructure is regularly spaced for simplicity.
![Monostruct Office by Masato Sekiya Monostruct Office by Masato Sekiya](https://static.dezeen.com/uploads/2011/09/dezeen_Monostruct-Office-by-Masato-Sekiya_13.gif)
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