A new assessment system named CASBEE-HI (Comprehensive Assessment System for Building Environmental Efficiency on Heat Island Relaxation) has been developed for evaluating the effects of various countermeasures related to building design on heat island relaxation. In CASBEE-HI, environmental efficiency concerning the heat island relaxation (BEE_HI) is defined as Q_HI/L_HI, where Q_HI is the quality of outdoor thermal environment within a building site and L_HI is the loadings emitted from this building site to increase the heat island effects in its surroundings. To assist the evaluator to examine the wind environment, two different scale wind environment databases were developed. In the present paper, wind environment databases for Tokyo and Osaka are described. The present Tokyo database includes results of three-dimensional CFD analysis in which all the existing buildings in the special 23 wards of Tokyo are reproduced in three-dimensional geometries in a grid network of approximately 500,000,000 meshes with a spatial resolution of 8 m in the horizontal directions.

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In the previous paper, a new assessment system named CASBEE-HI (Comprehensive Assessment System for Building Environmental Efficiency on Heat Island Relaxation) has been proposed for evaluating the effects of various countermeasures related to building design on heat island relaxation, and the outline of the evaluation sheet of CASBEE-HI was reported. In order to determine weighing of evaluation items in the evaluation sheet of CASBEE-HI, the sensitivity analysis of the influence of each relaxation strategy is necessary. In this paper, the example which performed the trial calculation fo change on the environmental efficiency (BEE_<HI>) of the building on heat island relaxation described in the evaluation sheet by the numerical analysis using three-dimensional CFD and one-dimensional urban canopy model.

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 This paper studied the deliberation process of revise the Urban Planning Law by the Home Ministry in 1946. During the revision, two different legislative approaches, one to revise the Urban Planning Law while separately enacting the Regional Planning Law, and one to establish a law integrating urban and regional planning, were explored.

 The revision of the Urban Planning Law alone aimed to position urban planning as a matter that should first be promoted by local governments. At the same time, it was proposed to place the Zoning Code regulations under the Building Regulation Law of 1919, within the Urban Planning Law. In line with these amendments, it was necessary to enact a law for regional planning.

 Based on some proposed amendments, a preparatory committee for drafting the Regional Planning Law and revising the Urban Planning Law was set up, and began a full-scale study on legislation of issues such as implementation of urban planning led by local governments, coordination between cities, and regional planning to deal with unregulated urban expansion, which the Urban Planning Law before the war had not been able to handle. Not only officials in the Home Ministry Planning Division, but also technical officials of the War-Damage Reconstruction Institute participated in the preparatory committee, creating a framework of building and urban planning administrations to study issues in an integrated manner.

 The preparatory committee formulated a draft that integrated the Regional Planning Law and the revision of the Urban Planning Law, in which it was proposed to set up areas with a planned development coordination function in view of urban expansion. On the other hand, it was considered too much of a challenge in the situation at that time to give the authority of urban planning completely to local cities. In addition, it was regarded as a fundamental principle to separately institutionalize the methods for controlling urban development under both laws even while zoning, etc., of the Building Regulation Law of 1919 within the Urban Planning Law.

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The Building Standard Law requires site corner-cutoff at each crossing when constructing a building with new road, while it doesn't require corner-cutoff if the site is located onto an existing road (i.e. Construction of a new road is not necessary). This paper reveals the historic reason of this double standard. Before World War II, the corner-cutoff rule for new roads was included in the building line guideline set by the central government, and the corner-cutoff rule for existing roads was included in the local government rules. After World War II, however, the new Building Standard Law was established, under which private citizens can apply for a road construction to the government, and two old corner-cutoff rules were abolished. In 1970, when the new road standards were established, the details about corner-cutoff for newly constructed roads was stipulated, but those about existing roads were left untouched.
Then this paper studies following three thoughts on how to resolve this double standard: 1) the corner-cutoff rule should be regulated for all road, 2) necessity to unify regulatory criteria, 3) the exclusion of the corner-cut off rule is also necessary.

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This study deals with the rules on installation of windows (the Japanese Civil Code Article 235) and the regional customs about such windows (Art. 236), both of which lead to protection of privacy. The Article 236 demands that such customs shall prevail if they exist.
This study reveals that, in the late 19th century, when the Japanese government first establshed the articles, the government did not clearly define or take into account such customs, even though it acknowledged that some regions had such customs. Lack of clear understanding of such customs by the government then and now is partly responsible for some lawsuits over protection of privacy.
This study concludes that the articles must be revised based on clear understanding of regional customs on privacy protection.

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 This paper analyzed characteristics of deliberation process draft of land law and amendment of urban planning law made by War Damage Reconstruction Institute after the World War II.
 In the immediate postwar period, engineering officers recognized necessity of the law about land in the city. They have begun to consider land law while studying related laws and regulations. This land law was considered from 2 ways of thinking one of the meaning as the method of multidiscipline urban planning including urban planning law and land readjustment act and the other meaning as the expansion type of the land readjustment act.
 As a result of examination, engineering officers made land law and bill to amend the urban planning law set up the new zoning for deliberate development and strengthened compelling force for the land rearrangement.
 After completion draft of land law and amendment of urban planning law, Ryoichiro Tsurumi examined proposals for changes. This draft was considered the land use planning divided in time.

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A new assessment system named CASBEE-HI (Comprehensive Assessment System for Building Environmental Efficiency on Heat Island Relaxation) has been developed for evaluating the effects of various countermeasures related to building design on heat island relaxation. In CASBEE-HI, environmental efficiency concerning the heat island relaxation (BEE_<HI>) is defined as Q_<HI>/L_<HI>, where Q_<HI> is the quality of outdoor thermal environment within a building site and L_<HI> is the loadings emitted from this building site to increase the heat island effects in its surroundings. A numerous number of numerical analyses were carried out to determine the weighting coefficients included in the assessment sheets for the evaluation of BEE_<HI>, according to the degree of relative effectiveness of each countermeasure. Case studies using the developed assessment system were conducted for many buildings and the applicability of CASBEE-HI has been examined.

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 This paper analyzed characteristics of bill to amend the building regulation made by War Damage Reconstruction Institute after the World War II. The results are given follows;
 1) As the first process, War Damage Reconstruction Institute thought coverage of the building regulation include in the city planning area.
 2) In the next process, suggested bill distributed the thought of bulk control and architectural regulation.
 3) Finally, War Damage Reconstruction Institute proposed the ideal draft include cooperation of the buildings.

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This research presents one part of the investigation stage for land use planning at the War Damage Reconstruction Institute, which proposed planning standards for each municipality. This paper analyzed preliminary draft of zoning made by Department of Interior and practical examination of land use planning by temporary employee. The results are given follows;
1) The War Damage Reconstruction basic policy showed reconstruction plan based on a land use planning, but first draft of the land use planning standards focused on reconsideration of zoning. In the background of this deliberation, this draft had positioning as proposal towards revision of the building regulation.
2) This draft came under review to the standards for land use planning match the War Damage Reconstruction basic policy. In this process, practical land use plan in the War Damage city proposed by temporary employee.
3) Finally land use planning standards was changed as follows, district in the residential area become diversified. The particular area was re-arranged substantively. The implications of urbanization control of a green area were strengthened.

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This research presents one part of the investigation stage for land readjustment planning at the War Damage Reconstruction Institute, which proposed planning standards for each municipality. This paper analyzed manuscripts by Kenichi Komiya investigated land readjustment planning, and drawings created at the War Damage Reconstruction Institute illustrated the relationship between land use planning and block planning. The results are given follows;
1. Komiya investigated criteria for comprehensive land readjustment planning that included rural areas with change land use and open space system in mind.
2. The land readjustment standard compiled more simplistically than Komiya's draft. Above all, typical value of the block and lot was worked-out on the basis of consideration of the open space.

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Although urban planning zoning systems define a commercial district as an agglomeration of commercial and business land, these days the number of high-rise apartments has increased in such areas. To prevent undesirable changes in the urban environment, through an excessive increase in housing, some cities implement residential development regulations in commercial districts. This study examines the current status of residential development regulations applicable to 434 commercial districts in Japan. The research concludes that conditional development directives will aid in implementing the various regulations applicable to commercial districts.

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外地における都市計画・建築物法令の一体化について，飯沼一省の『地方計画論』の影響を受け，再評価されるべき利点を持つ，とする見解がある。本研究は法令一体化に対する『地方計画論』の影響と利点について考察した。都市計画法令と建築法令の単純な一体化は，『地方計画論』の主張には反する制度化であった。外地法令における建築許可制度の権能は内地法のそれを越えておらず、台湾における用途地域は日本本土と同様に建築法令の権能によって運営された。既存研究に於いて指摘された都市計画法令と建築法令の一体化の利点は，適用の便利さを除いて棄却された。

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 This paper studied the deliberation process of revise the urban planning law by the Home Ministry directly after World War II.

 As World War II came to an end, the Home Ministry organized items to solve prewar urban planning issues and realized the necessity to construct a phased planning system including central planning, regional planning and urban planning. From a legal system aspect, it was necessary to associate and discuss the multiple related laws including revisions of urban planning law, the enactment of regional planning law and the enforcement of special urban planning law aimed at war-damage reconstruction.

 As preparations were underway for war-damage reconstruction, revisions of urban planning law were regarded as important. First, considerations were given to revisions of necessary parts in former urban planning law with the aim of placing regulations which support the creation of the ideal spatial image of postwar restoration such as establishing new zones as well as establishing construction regulations and land readjustment in urban planning law.

 Afterwards, not only revisions of urban planning law, but also discussions about new bill that include regional planning which deals with the coordination between cities and the expansion of cities were conducted. This draft was to organize regional planning led by the central government and urban planning led by regional government, and to suggest a unified framework from the coordination between cities to architectural regulation.

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