北海道内で一時代を築いていたと思われる養蚕業だけれど、
その盛時を伝える遺構は非常に希少。というか、
わたしも教えていただくまでまったく知らなかった。
養蚕自体は東アジア地域全体で広く取り組まれていたけれど、
需要はヨーロッパ世界が資本主義発展する中で明治期から旺盛に盛り上がり、
そのなかで日本が独立を保ったまま国際貿易活動に参入できたことで
自由貿易世界にとって重要な生産国の位置を占めることができた。
固陋な中華思想を振り回す中国と、その冊封体制下にあって社会発展を拒んでいた
朝鮮半島との決定的な歴史の分岐点だったのだと思う。
横浜の開港によってこうした自由貿易の恩恵が日本社会を揺り動かし
生糸生産・養蚕業は大きな産業領域ととらえられ
北海道の新天地で自由に生産者となれることでさらに社会は躍動した。
そういうなかで養蚕事業での激しい競争がもたらされ、
あらゆる革新が持ち込まれて市場が盛り上がっていったのだろう。
経済振興こそが国家発展の最重要要素。政の基本目的は民が食べて行くこと。
この東旭川の養蚕民家はそのなかでも最先端の「建築技術集成」だったと思える。
屋根は片あずまと呼ばれる一端が半切妻、もう一端が寄棟の形式で、
厚く葺かれたカヤ、軒の高い構えとあいまって独特の外観を構成している。
この建物は移築されたものではなく、現在地にそのままあった。
なので、目的的と思われる正面手前と周囲の高木は防風の役目かと思える。

特徴的な外観ポイントは半切妻とされる側の仕様。
上下階ともほぼ真ん中に開口部を設けて蚕が欲する「通風」を確保している。
しかし左右で茅葺き屋根の端部の長さに顕著な違いがある。
左側は正面であり、概ね南面方向に当たっている。
この建物は全体として階高が高いけれど、その階高以上に屋根が短い特徴。
南面側には、日射取得の開口部が階間部にまで設けられている。
少しでも蚕の成育のために日射と太陽熱を取得したい、ということの帰結。
外観的に一見はアンバランスに見えるけれど、
出身地・福島県でのさまざまな先人の知恵と工夫の結果として
こういう建物形状が歴史的に選択されてきたと思われる。
まさに「用の美」ということがわかりやすいカタチで伝わってくる。
群馬県前橋での養蚕民家では、正面の屋根中央部を大胆に切り落としていたが、
コンセプトとしては同様だけれど、スタイルに違いが表れている。
気候風土への対応でそのスタイルが変化するのだということを
先人たちのデザイン感覚は教えてくれている。
この面の反対側では普通の寄棟屋根が掛かっているけれど、
その平面を確認すると、畳敷きのハレの伝統空間なので、
そういう設計意図からのカタチの変化ということが言えるのでしょう。

English version⬇

Hipped roof and half gable “Kataazuma” structure and plantings.
The exterior shape of the hipped roof is cut on one side of the hipped roof. The roof is cut on one side of the hipped roof to improve ventilation and to let in sunlight on the south side. The unique “beauty of use” of the traditional construction method. …

Although the sericulture industry is thought to have had its heyday in Hokkaido, the remains of this industry are extremely rare.
but the remains that tell the story of its heyday are extremely rare. I mean, I had no idea about it until I was told about it.
I had no idea about it until I was told about it.
Sericulture itself was widely practiced in East Asia.
Demand for sericulture was booming from the Meiji period (1868-1912) as capitalism developed in the European world, and Japan was able to maintain its independence.
Japan was able to participate in international trade activities while maintaining its independence, which made it an important producer for the free trade world.
Japan was able to remain independent in international trade and occupy an important position as a producer in the free trade world.
The decisive historical divergence between China, which wielded a perverse Chinese ideology, and the Korean peninsula, which was under a system of book-entry that refused to allow social development.
The opening of the port of Yokohama marked a decisive turning point in the history of Korea.
The opening of the port of Yokohama shook Japanese society with the benefits of free trade.
Raw silk production and sericulture were seen as a major industrial area.
The ability to become a free producer in the new land of Hokkaido was a dynamic development for the society.
In such a situation, fierce competition in the sericulture business was brought about, and all kinds of innovations were brought in.
The market was enlivened by all kinds of innovations.
Economic development is the most important element of national development. The basic objective of government is to feed the people.
This sericultural house in Higashi-Asahikawa was the most advanced in its kind, a “collection of architectural techniques.
The roof is a kata-azuma style with a half gable at one end and a hipped roof at the other.
The thickly thatched kaya roof and the high eaves give the building a unique appearance.
This building was not moved to the current location.
Therefore, the tall trees in front of and around the front of the building seem to be for the purpose of protecting it from the wind.

The characteristic exterior point is the specification of the side that is considered to be a half gable.
Both the upper and lower floors have openings almost in the middle to secure the “ventilation” that the silkworms desire.
However, there is a marked difference in the length of the edge of the thatched roof between the left and right sides.
The left side is the front side and generally hits the south face direction.
This building has a high overall story height, but its roof is characterized by a shorter roof than its story height.
On the south side, there are openings between the floors to allow sunlight to penetrate.
This is a result of the desire to obtain as much sunlight and solar heat as possible for the growth of silkworms.
Although it looks unbalanced from the outside, it is a result of the desire to obtain as much sunlight and solar heat as possible for the growth of the silkworms.
but it is the result of the wisdom and ingenuity of our predecessors in Fukushima Prefecture, where I am from.
The shape of the building is thought to have been historically selected as a result of the wisdom and ingenuity of various predecessors in Fukushima Prefecture, the place where the building was built.
The beauty of the use of the building is conveyed in a form that is easy to understand.
In Maebashi, Gunma Prefecture, a silkworm-raising house had its front roof boldly cut off in the center.
The concept is the same, but the style is different.
The design sense of our predecessors taught us that the style changes in response to the climate.
The design sense of our predecessors has taught us that the style changes in response to the climate.
On the other side of this plane, there is a normal hipped roof.
But if you check the plane of the roof, you will see that it is a traditional Hare (ceremonial) space with tatami mats.
I guess you could say that this is a change of form from the design intent.

Posted on 9月 16th, 2022 by 三木 奎吾
Filed under: 住宅マーケティング, 古民家シリーズ | No Comments »

1909年建設という旭川の奥、東旭川にある養蚕民家。
本州地域ではこの程度の築年の建築は多数あるけれど、
明治以降の開拓史しかない北海道では、十分に「古民家」といえる。
この建物は旭川市指定文化財となっている。
先般来、群馬県前橋市の養蚕の古民家を取材したことから
その建築要件として蚕というイキモノの生態に最適化された建築が要請され
北海道での高断熱高気密という「住宅性能」探究の異形のルーツとして
この「養蚕民家」について興味を持つに至った。
高い天井高の大空間志向、室温環境の安定と暖房効率の追求、
適度な「通気性」のコントロールなど、通底する要素技術が垣間見えた。
前橋の養蚕民家のブログ記事を見ていただいた住宅研究者の方から
この旭川郊外の「養蚕民家」の情報を頂き、ちょうど旭川の現代住宅取材の
機会も同時にあった（既述）ので、前倒しで訪問して撮影取材した次第。
地図で北海道に残る「養蚕業」の痕跡を示してみた。
テーマとしても養蚕業というものが明治から昭和にかけた時代の
大きな「産業」要素でもあり、農業開拓の大きな柱でもあったこともあり、
また、当時の住宅性能的な試行努力の痕跡としても興味をそそられる。
そんなことで「養蚕民家」について連載ブログで探索したい。

この東旭川地域は明治31年以降に福島県から集団移住して開拓された。
第１回の集団移住者が入植したのは５月３日とされ、地元の大田神社では
この日を春祭りとして祝っているのだという。
いまでこそ一帯は豊かな田園風景が広がっているけれど、
入植時はなかなか開墾が進まず、洪水などの悪条件も重なって
困難な生活を強いられたと言うことですが、
明治39年の道庁の「開拓成功検査」では
「長年月の悲境にも屈せず刻苦忍耐ついに今日の成功を致せり」と賞されている。


北海道の地域としての養蚕業にとっても、この東旭川の事例は
大きな成功例であったことがうかがえます。
日本の養蚕業は明治開国時期、欧米の絹繊維ファッション需要に対して
最初期の横浜からの主要輸出産品としての地位を確立していた。
欧米先進社会に対してアジアの国が資本主義ネットワークに参入するのに
もっともキモになった産業だったことがわかる。
明治以降、第２次世界大戦までの70年あまりの時代に
日本人口は2.5倍増くらいに大幅増加で推移する。
江戸期の250年間で1,800万人から3,000万人にしか
人口増加しなかったことを考えると、経済発展こそが歴史を動かすのだと思う。
養蚕業自体はその後の「化学繊維」の発展によって歴史的使命を終える。
その変化を主導した倉敷・大原家の「民藝建築」もすでに見た。
住宅建築・古民家探訪を通して産業の興亡の断面もみる思い。＜以下、あすへ＞

English version⬇

The pioneering spirit that bet on sericulture 113 years ago: Sericultural houses in Higashi-Asahikawa-1
After the Meiji era, many immigrants from Honshu dreamed of success in Hokkaido. The passion for the industry and the traces of their pursuit of housing performance are explored. The spirit of the pioneers who bet on sericulture

Built in 1909, this silkworm-raising house is located in Higashi-Asahikawa, deep in Asahikawa.
In the Honshu region, there are many buildings of this age, but in Hokkaido, which has only been settled since the Meiji period, they are considered “old minka.
In Hokkaido, which has only been pioneering since the Meiji era (1868-1912), this house is considered old enough to be an “old minka”.
This building is designated as a cultural asset by Asahikawa City.
I recently visited Maebashi City, Gunma Prefecture, to report on an old sericultural house.
The building’s architectural requirements are optimized for the ecology of silkworms.
As the root of my exploration of “housing performance” of high heat insulation and high airtightness in Hokkaido, I have been interested in this “silkworm minka”.
I became interested in this “silkworm-raising minka” as the root of my search for “housing performance” in Hokkaido, which is highly insulated and airtight.
The house is oriented toward large spaces with high ceilings, pursuit of a stable room temperature environment and heating efficiency, and control of adequate “air permeability.
I could catch a glimpse of the elemental technologies that are commonly used throughout the house, such as the control of adequate “ventilation”.
A housing researcher who read my blog post about a silkworm-raising house in Maebashi told me about this “silkworm-raising house” in the suburbs of Asahikawa, Japan.
I received information about this “sericultural minka” in the suburbs of Asahikawa from a housing researcher who had read my blog post on the silkworm farmhouse in Maebashi.
I visited the house ahead of schedule to take photos and report on it.
The map shows the traces of “sericultural industry” in Hokkaido.
As a theme, sericulture was a major “industrial” element of the period from the Meiji Era to the Showa Era.
It was also a major “industrial” element of the period from the Meiji era to the Showa era, and was a major pillar of agricultural development.
Also, the traces of trial and error in housing performance at that time are intriguing.
This is why I would like to explore the “sericultural minka” in this series of blogs.

The Higashi-Asahikawa area was settled by a mass migration of people from Fukushima Prefecture after 1898.
It is said that the first mass immigrants settled in the area on May 3, and the local Ota Shrine celebrates the day as a spring festival.
This day is celebrated as a spring festival at the local Ota Shrine.
Although the area is now a lush rural landscape, it was not easy to cultivate the land at the time of the settlement.
However, at the time of settlement, cultivation of the land did not progress well, and floods and other adverse conditions also occurred.
The settlers were forced to live in difficult conditions due to floods and other adverse factors.
In 1906, the Provincial Government’s “Inspection of Success in Cultivation” stated
However, in the “Success Inspection of Pioneering” conducted by the Provincial Government in 1906, it was praised as “Success today has been achieved through perseverance and hardship, not giving in to adversity over many years.

The case of Higashi-Asahikawa is a rare success story for the sericulture industry in Hokkaido.
The sericultural industry in Japan was a rare example of success.
The Japanese sericultural industry had established itself as a major export product from Yokohama in the early days of the Meiji era, when the country opened to Western demand for silk fiber products.
The Japanese sericultural industry had established itself as a major export product from Yokohama in the early days of the Meiji era.
It was the most important industry for Asian countries to enter the capitalist network against the advanced Western societies.
The industry was the most important factor in the entry of Asian countries into the capitalist network against the advanced societies of the West.
In the 70-odd years from the Meiji era to World War II, the Japanese population grew by 2.5 percent.
The number of Japanese people increased by a factor of 2.5.
Considering that the population only grew from 18 million to 30 million during the 250 years of the Edo period
Considering that the population only increased from 18 million to 30 million during the 250 years of the Edo period, economic development is what drives history.
The sericultural industry itself ended its historical mission with the subsequent development of “synthetic fibers.
We have already seen the “folk art architecture” of the Ohara family of Kurashiki, who led this change.
Through the exploration of residential architecture and old private homes, I would like to look at a cross-section of the rise and fall of the industry. ＜See you tomorrow.

Posted on 9月 14th, 2022 by 三木 奎吾
Filed under: 住宅マーケティング, 古民家シリーズ | No Comments »

旭川でのアース21例会住宅見学最後は（株）高組ホームファクトリー。
市内のモデルハウスの様子であります。
公共などの大型建築工事主体で、最近アース21に加入された会社。
わたし自身ははじめてその住宅を見学させて頂いた。
外観的にはシンプルな建物だったのですが、玄関の様子を見て明確に
間取りに45度の軸線傾斜をつけ室内空間を変化させる意図が感じられた。
わが家の設計時に、設計者・高村氏から四角四面のブロック住宅に
変化を生み出す仕掛けとしてこの45度の軸線傾斜を見せられた。
この空間配置計画では面白い空間の開放感が生まれる。
面積以上の「広がり感」が得られる効果がある。
実際に自分で空間を使ってみると、それは実感できたのです。
「視線の抜け」という建築が求める視覚効果に有効。
居間空間などでこのことは強く実感させられた。
ただし一方で局所的に「ムリの集中」みたいな場所ができやすい。
たぶん建築的興味としてはそれをどうクリアできるか、でしょう。
メリットとデメリットを覚悟の上でどう空間構成するか
個人的体験からの興味に導かれて見学させて頂いた。

エントランス部分の効果としては、ドア面がセットバックすることで
奥行き感を演出させる効果があることはすぐに見て取れる。
いわば外部ホールのようなウエルカム空間に活用している。
同様に２階でもここは「バルコニー」用途になっていて有益的。
そして内部空間に入って見ると、やはりその効果は居間の本棚に見て取れた。
玄関の背面は居間への導入空間だけれど、そこに本棚が据えられて
空間の機能性として、インテリア装置としてみごとに活用。
DX時代だけれど紙の本は美観的に奥行きあるインテリアとして最高（笑）。
リビングから見るとダイニングや２階への階段などに
視界が十分に広がっていく感覚が得られて、面積以上に広さを感じられる。
プラン的には間取り図上では右側がリビングやキッチン。
いわばパブリックゾーンであり、広がりを享受するべき空間。
一方で左側は階段やトイレ・水回りなどの機能性空間であり、
その「開放感」を受け止める機能性の役割を担っていた。


面白い空間展開を見せてくれているけれど、個人的には
ダイニングにすこしもうひと工夫が欲しいのではと思っていた。
こういった変化に富んだ内部空間に点景として実現していたのが
階段下に設けられた遊び的空間。
子どものための「デスク空間」とでもいえるだろうか。
そういえばテレワークを意識してか、台所水回りに隣接したデスクもある。


パブリック空間の情緒的な「やすらぎ感」と個室的な閉鎖性の確保。
現代住宅に求めているユーザー心理をどう取り込むか、
新たに住宅市場参入拡大を試みる企業としての挑戦マインドを感じた。

English version⬇

Asahikawa 2022: A 45-degree axial sloping floor plan.
A mechanism to create change in space. The merits of free openness in the floor plan and the struggle against the concentration of a sense of unreasonableness. The design struggle was observed with great interest. The house is a very interesting design.

The last of the Earth 21 meeting house tours in Asahikawa was at the Takagumi Home Factory Co.
This is a view of a model house in the city.
The company is mainly involved in large-scale construction work for public buildings and has recently joined Earth 21.
This was the first time for me to visit the house.
Externally, it was a simple building, but when I looked at the entrance, it was clear that it had a 45-degree axial tilt to the floor plan.
I could sense the intention to change the interior space with a 45-degree axial slope in the floor plan.
During the design of our house, the designer, Mr. Takamura, told us that he wanted to create a change in the square block house.
The 45-degree axial tilt was shown to me by the designer, Mr. Takamura, during the design of my house as a mechanism for creating change in a square block house.
This spatial arrangement plan creates an interesting sense of openness.
The effect is to create a “sense of spaciousness” that is greater than the area of the house.
When I actually used the space myself, I could feel it.
It is effective for the visual effect that architecture seeks, which is “line-of-sight”.
This was strongly felt in the living room space, for example.
On the other hand, however, it is easy to create places that are locally “concentrated”.
Perhaps the architectural interest is how to overcome this problem.
How to compose the space with the merits and demerits in mind?
I was led to visit the site by my interest based on personal experience.

The effect of the entrance area is that the door surface is set back to create a sense of depth.
It is immediately apparent that the setback of the door surface has the effect of creating a sense of depth.
It is utilized as a welcome space like an external hall, so to speak.
Similarly, the second floor is used as a “balcony,” which is also beneficial.
When entering the interior space, the effect can be seen in the bookshelf in the living room.
The back of the entrance is an introductory space to the living room, and the bookshelf is placed there.
The bookshelf is used as an interior decoration device as well as a functional element of the space.
Even in the age of DX, paper books are aesthetically pleasing as an interior design with depth (laughs).
When viewed from the living room, the view extends to the dining room and the staircase to the second floor.
The view from the living room gives the sensation of a fully expanded field of vision, giving a sense of space that is larger than the area of the house.
In terms of the plan, the living room and kitchen are on the right side of the floor plan.
These are the public zone, so to speak, and the space where one should enjoy the expansiveness of the space.
On the other hand, the left side is the functional space such as the staircase, toilet, and water supply.
functionality that receives the “openness” of the space.

The space is interesting, but I personally thought that the dining room could use a little more work.
I personally thought that the dining room could have used a little more work.
In this varied interior space, a playful space under the staircase was realized as a dotted landscape.
The playful space under the staircase.
It could be called a “desk space” for children.
Perhaps with teleworkers in mind, there is also a desk adjacent to the kitchen sink.

The emotional “sense of ease” of public space and the private, closed-off feeling of a private room.
How can we capture the user’s mentality that they are looking for in a modern house?
I felt the challenging mindset of a company newly attempting to expand its entry into the housing market.

Posted on 9月 12th, 2022 by 三木 奎吾
Filed under: 住宅マーケティング, 住宅取材＆ウラ話 | No Comments »

きのうの続きで旭川・芦野組施工のエコ志向住宅です。
建物の外壁１面ではワラによる断熱層が作られ、塗り壁仕上げされている。
アメリカなどではストローベイルハウスというワラ束による家づくりもある。
非定常的な自然素材であるワラは、定性的な「性能検証」が難しい。
その機能性を検証できるグラスウールはその開発発想に於いて
人類的知見であった繊維状素材の「静止空気」保存性能に着目して
排ガラスを工業的に再生利用した叡智。しかしそのマザーであるワラ束には
定性的性能評価は非常に困難、ということはわかる。不定型な自然が相手。
ただ、住宅研究者に日本での断熱材素材の歴史のご意見をうかがうと
「日本ではストローベイル断熱というのはありません。
断熱と言えば鋸くず、カンナ屑、稲わら系もありますが「茎部分のワラ」ではなく、
「もみ殻」を利用しているのが相場。壁の中に充填するには、
もみ殻のほうがすき間なく施工できて扱いやすいからなのでしょうけど、
ワラを断熱用途として使おうという発想がすくないのは不思議。」とのこと。
ワラの利用というのは欧米的着眼・発想であるのかも知れません。
このあたりは人類的DNAの明確な「相違」であるのかもしれない。
アフリカを出て、中東地域で東西に分かれたという人類史で
不可思議な「分化」が生まれたモノでしょうか、あるいは
その後の地球寒冷化で様相がアジア大陸とヨーロッパ地域で違ったのか。
非常に興味を惹かれる次第であります。

さて上の写真はこの家の２階のトイレであります。
「？」というのが第１印象。わたしはキャンプなどの趣味はないので、
このバイオトイレをはじめて見た。それも一般住宅の設備として・・・。
バイオトイレは水を使わず排泄物を微生物の力で分解・処理。
水洗トイレの概念とは全く異なるトイレのこと。
住宅設備としてまったく初見だったので多くの見学参加者も興味津々。
「分解された排泄物の中には様々な有機物が含まれているため、全ての成分が
水と二酸化炭素になるわけではありません。窒素やリン、カリウムなどは分解されず、
木質チップに残っており時間が経つとたい肥となる。
微生物の力を使って水を一切使わずにトイレを利用することができる」という考え。
最近自然派志向のグッズとして注目されているようで
多くの企業が製品開発してきているので検索ください。参照URL。
サクラの棒が添付されているけれど、これは便層内を撹拌して微生物分解を
促進させるためのものだそうです。

また、建物内の換気についても２階寝室に大風量の排気装置があり、
毎日一定時間、人感的に定時動作させることで必要換気量を確保する考え。
計画的機械換気というのが一般的趨勢ですが、そういう機械依存的ではない
考え方というのも、目からウロコと思われました。
＜この住宅ルポ、あしたにも続きます。＞

English version⬇

Asahikawa 2022 House Building Exploration-8
Instead of flushing, excrement is decomposed and treated by the power of microorganisms. The camping boom has led to a gradual increase in the number of manufacturers entering the market. …

Continuing from yesterday, this is an eco oriented house constructed by Ashino Gumi in Asahikawa, Japan.
On one exterior wall, a straw insulation layer has been created and the walls are painted.
In the U.S. and other countries, strawbale houses are built using straw bundles.
Straw is a non-routine natural material, making it difficult to qualitatively verify its performance.
Glass wool, whose functionality can be verified, was developed based on the human knowledge of fiberglass.
Focusing on the “still air” preservation performance of fibrous materials, which had been known to mankind
The wisdom of industrial recycling of waste glass. However, it is very difficult to qualitatively evaluate the performance of its mother material, straw bundles.
I understand that qualitative performance evaluation is very difficult. We are dealing with an indefinite nature.
However, when we asked a housing researcher for his opinion on the history of insulation materials in Japan, he replied
In Japan, there is no such thing as strawbale insulation,” he said.
When it comes to thermal insulation, there are sawdust, wood shavings, and rice straw, but it is not “stem straw” but “rice husk” that is used in the market.
The most common use of strawbale insulation is rice husks. To fill in the walls, it is better to use rice husks.
I guess it is because rice husks are easier to handle and can be used to fill walls without gaps.
It is a wonder that there are so few people who have the idea of using straw for insulation. It is strange that straw has not been used for heat insulation.
The use of straw may be a Western concept.
This may be a clear “difference” in human DNA.
In the history of mankind, we left Africa and divided into East and West in the Middle East region.
Or perhaps a mysterious “differentiation” was born in the history of mankind when we left Africa and divided into East and West in the Middle East region.
or perhaps the subsequent global cooling caused a difference between the Asian continent and the European region?
I am very much interested in this.

The photo above is a bathroom on the second floor of this house.
My first impression was, “What? was my first impression. I am not into camping, so this is the first time I have seen this bio-toilet.
I have never seen this bio-toilet before. I had never seen a bio-toilet before, and it was installed in an ordinary house.
The bio-toilet uses microorganisms to decompose and dispose of excrement without the use of water.
It is completely different from the concept of flush toilets.

Many of the tour participants were very interested in the system, as it was completely new to them as a housing facility.
The decomposed excrement contains a variety of organic matter, so not all of the components can be turned into water and carbon dioxide.
Not all of the components become water and carbon dioxide. Nitrogen, phosphorus, potassium, etc. are not decomposed and remain in the wood chips.
remain in the wood chips and become compost over time.
The idea is that “toilets can be used without using any water at all by using the power of microorganisms.
It seems to be attracting attention as a nature-oriented product these days, and many companies are developing products.
Many companies have been developing products, so please search for them.
The cherry stick is attached to the product, but it is supposed to agitate the stool layer to promote microbial decomposition.
This is said to agitate the inside of the stool bed to accelerate microbial decomposition.
Also, regarding ventilation in the building, there is a large airflow exhaust system in a bedroom on the second floor.
The idea is to secure the necessary ventilation volume by operating it manually at regular intervals every day.
While the general trend is to use planned mechanical ventilation, this kind of non-machine-dependent approach was also an eye-opening experience for me.
This is the trend of planned mechanical ventilation, but the idea of not relying on such mechanical ventilation was also an eye-opener for us.
＜This report will be continued tomorrow. ＞

Posted on 9月 10th, 2022 by 三木 奎吾
Filed under: 住宅取材＆ウラ話, 住宅性能・設備 | No Comments »

写真は北海道ハウジングさんの旭川近郊・東川の施工現場。
工事途中の現場見学ということで、室内の気密施工と換気の状況。
北海道ではこのような基盤技術的な共通仕様が固まっていて、
選択要素である断熱厚みについては柔軟な対応ができる。
防湿シートの安定的な施工技術があればあとは断熱レベルはコスト次第。
そしてそれはコストを含めたエネルギー選択の問題。・・・

先日、アメリカでも脱炭素の先端地域と言われるカリフォルニアで
この夏の猛暑、連日40度を超える状況の中で
「電気自動車（EV）への充電は避けるように」という注意報が発出された。
アメリカではバイデン政権は国内の石油資源利用について
非常に抑制的な政策で、結果シェールガス生産が抑制されている。
そのタイミングでロシアのウクライナ侵攻で世界的エネルギー危機。
バイデン政権は自国ではSDGs政策を進めているが
世界の資本主義の盟主としてはエネルギー価格高騰は防ぎたいという
政策的ジレンマの中に置かれている。
感染症への対応で積極財政政策を取っていることも重なって
物価高騰レベルがハンパなく、中間選挙で現政権はキビシイ状況。
エネルギー戦略の舵取りというのは非常に難しい。
エネルギー選択では徐々に自然エネルギー依存が強まっているけれど、
生活インフラがクルマEV化に舵を切っていくなかでアメリカ国民に
「電気自動車（EV）への充電は避けるように」
ということでは将来的にも暮らし方自体、非常にキビシイ。
ヨーロッパでも問題は同様で、世界の未来対応は非常にセンシティブ。

この問題は世界共通であり北海道の暮らしに直結するテーマ。
エネルギーについては世の動きに対応して行くしかないと思うけれど
住宅建築では建て主の未来の生活基盤に係わってくる問題であり
無自覚にはいられない。選択はしていかなければならない。
北海道の広大な自然環境の良さを暮らしのメリットと感じるためには
やはりクルマの利便性への依存は避けられない。そのエネルギー基盤として
自家消費としての太陽光発電は合理的だけれど、
北海道の日本海側・北部では冬の多雪時期に稼働率が大幅に下がったり、
あるいは一時的に「途絶」するのでは生活インフラたり得ない。
「きょうは大雪でお日様も隠れているので、暮らしもお休み」
と言うワケにはいかない。命にすら関わる。
感染症とウクライナの情勢は、建築にも資材高騰に結果しているが
いまの時代は長いスパンでの選択には難しい時代なのだと思わされる。
必ずしも平和な環境とばかり見通しにくい未来展望の中で
わが家のエネルギー将来像をどう描いたらいいのか、
ひとりひとりに選択を突き付けられてもいると思う次第。

English version⬇

Energy Choices for Cold Weather Homes Asahikawa2022Home Building Exploration-6
A “avoid electric vehicle (EV) charging” warning was issued in California this summer. Energy choices for living are not waiting. …

The photo shows Hokkaido Housing’s construction site in Higashikawa, near Asahikawa.
This is an onsite visit during construction, and shows the airtight construction and ventilation of the interior.
In Hokkaido, common specifications for basic technology like this have been established.
The insulation thickness, which is a factor of choice, can be flexibly adjusted.
Once a stable construction technique for moisture-proof sheets is in place, the insulation level depends on the cost.
And it is a matter of energy selection, including cost. ・・・・.

I was recently in California, one of the leading decarbonized regions in the United States.
In the midst of this summer’s heat wave, with temperatures exceeding 40 degrees Celsius every day
A warning was issued to avoid charging electric vehicles (EVs).
In the U.S., the Biden administration has been very restrained in its use of domestic petroleum resources.
The Biden administration has been very restrained in its use of domestic oil resources, and as a result, shale gas production has been curbed.
At the same time, Russia invaded Ukraine, causing a global energy crisis.
The Biden administration is pursuing SDGs policies at home, but
But as the world’s capitalist ally, it wants to prevent energy prices from skyrocketing.
The Biden administration is caught in a policy dilemma.
Combined with its aggressive fiscal policy in response to infectious diseases
The current administration is in a difficult situation due to the mid-term elections, as the level of price hikes has been unacceptable.
The energy strategy is very difficult to steer.
Although energy choices are gradually becoming more and more dependent on renewable energy sources, the infrastructure for daily life is shifting to EVs for cars.
As the infrastructure for daily life is shifting toward EVs, the American people are being asked to “recharge their batteries for electric vehicles (EVs)” and to “take advantage of the new energy sources.
“Avoid charging electric vehicles (EVs).
This is a very difficult situation for the future of our way of life.
The problem is the same in Europe, and the world’s response to the future is extremely sensitive.

This issue is universal and directly related to the way of life in Hokkaido.
As for energy, I think we have no choice but to respond to the world’s trends.
However, in the case of residential construction, it is an issue that will affect the future infrastructure of the owner’s life.
We cannot be unaware of it. We must make choices.
In order to feel the benefits of Hokkaido’s vast natural environment
we must depend on the convenience of the car as the energy base. As an energy infrastructure, solar power generation for private consumption is a rational choice.
Solar power generation for private consumption is reasonable.
However, in the Sea of Japan side and the northern part of Hokkaido, the operation rate drops drastically during the heavy snowfall in winter, or is temporarily “interrupted”.
However, if the operation rate drops drastically or is temporarily interrupted during the heavy snowfall in winter in the Sea of Japan side and northern part of Hokkaido, it cannot be considered as a living infrastructure.
It is not enough to say, “Today is a heavy snowfall and the sun is hiding from us, so our daily life is closed.
It is not enough to say, “Today is a heavy snow day and the sun is hiding from us, so our lives are on the line. It is even life-threatening.
Infectious diseases and the situation in Ukraine have resulted in a sharp rise in the cost of materials for construction.
The current situation makes us think that it is difficult to make choices in the long run.
In a future that is not necessarily peaceful, how do we envision the energy future for our homes?
How should we envision our family’s energy future?
I believe that each and every one of us is faced with a choice.

Posted on 9月 8th, 2022 by 三木 奎吾
Filed under: 住宅マーケティング, 住宅性能・設備 | No Comments »