The purpose of this study is to clarify the participation patterns of organizers utilizing the event support program for town plazas, using Machiniwa in Hachinohe City as a case study. Results, 1) In terms of the quality of the system, the support project created opportunities for the formation of a bustling downtown area, and the organizers’ groups were seen to continuously utilize the event. 2) In terms of the quality of the space, the participation can be categorized into three types: internal concentration, internal and external development, and neighborhood collaboration, enabling the participation of a wide variety of activities.

Autonomous communities tend to develop their mutual cooperations especially between urban and rural area. Timber utilization can be a typical example of the cooperation. This paper conducted case studies of six autonomous communities that implement cooperation projects for timber utilization in different scale from municipal to national. As a result, it became clear that the autonomous communities adopted a form of cooperation in which strengths were utilized to compensate for weaknesses, depending on the spatial distance to the partner and the characteristics of the region.

This study proposed a new structural system for mid-rise wooden building to enhances the strength and ductility using a new steel rod insertion and adhesive bonding joint construction and CLT panel shear walls. To verify the effectiveness of proposed structural system, cyclic loading tests of full scaled specimens were conducted and also conducted lateral load-carrying capacity calculation and time history response analysis. This paper firstly presents the relationship of the strength and ductility of structural system, and then studies the seismic resistance design of the new structural system, introducing an actual project.

In recent years, there has been a demand for energy conservation in housing. The authors study PVT/heat pump heating/cooling/ventilation/water heating system to improve the energy independence rate in winter. They conducted case studies to verify the results of the analysis, which suggested that the energy independence rate can be improved by raising the temperature setting during the daytime and using PV power generation to store heat under the floor. The analysis results showed that appropriate heat pump heating operation and under-floor heat storage design tended to improve the energy independence rate and realize a comfortable thermal environment.

South Seoul City Planning (1961) was the first urban plan to build a large-scale residential area in the southeast area south of the Han river. Although not everything was realized as planned, the plan was unique in that it planned an expressway including the Hannam bridge, applied the concept of neighborhood unit for the residential area, and proposed the construction of a large-scale urban park utilizing the waterfront. All of these were the first attempts of their kind in the postwar period. In this sense, the South Seoul City Planning was a pioneering plan in postwar urban planning in Seoul.

Production control data for concrete produced at a precast concrete plant were collected and machine learning was used to predict compressive strength and evaluate the results. Random Forest and Elastic-Net regression were found to be effective prediction methods, and data on specimen weight was found to be valid. It was also shown that the prediction accuracy can be improved by measuring features that were not measured in this study.

Using the school accident data and outdoor weather data, the relationship between the incidence of heatstroke in school buildings and the environment around the school buildings before/during the new coronavirus pandemic was determined. Comparing the occurrence of heatstroke in high school classrooms before/during the coronavirus pandemic, it was found that the outdoor WBGT where the peak incidence of heatstroke was gained during the coronavirus pandemic, was lower than that before the coronavirus. One of the reasons was thought to be a decrease in cooling efficiency due to the combination of opening windows and using air conditioners.

We conducted a questionnaire survey on residential buildings for elderly in Hokkaido district. The survey revealed features of building structure, number of floors, heating and hot water equipment, and so on, by type of the buildings. And using the data obtained from the survey, carbon dioxide emission and primary energy consumption of the buildings were estimated.

Hydraulic model experiments using a scaled model were conducted to verify the validity of author’s previous analytical studies for seismically isolated building against tsunami. The scale of the model was 1/150. The experimental parameters included the installation angle of the model. The results showed followings: (1) The maximum hydrodynamic force is roughly proportional to the width of model across the tsunami flow, (2) The hydrodynamic force doesn’t increase sharply when the installation angle is 45 degrees, (3) The experimental results show the similar trends to previous studies. A 3-D fluid analysis was also conducted to reproduce the experimental conditions.

In this report, an experimental study was conducted on floor impact sound insulation performance when tatami with anti-vibration proposed in the previous reports was constructed on floating floor system. As a result, from the results of the car-tire source, when tatami mats with anti-vibration are installed, reduction of transmitted impact sound is 2 to 4 dB for the 63 Hz band in some specifications, and floor impact sound insulation performance using the car-tire source is better than that of the bare surface.