Under the background of rapid development of social economy and continuous progress of scientific information technology, new energy-saving technologies and materials have been widely used in building HVAC design, and promoted the development of China's architectural HVAC design field. The application of new energy saving technology and materials in building HVAC design can effectively reduce the energy consumption of building HVAC design and achieve the effect of energy conservation and environmental protection.

The increasing demand of construction is a challenge to be fulfilled in this regard different new construction materials are found to be utilized differently. One of the wall construction materials Autoclaved Aerated Concrete Block (AAC) is found to be used in Bharatpur Metropolitanof Nepal.The purpose of this research is to assess the technical suitability of Autoclaved Aerated Concrete Block as Alternative Building Construction Material for the construction of residential buildings and hotels. Laboratory test of the AAC blocks ware done .Quality control chart and t-test ware done for analysis. To test the physical properties, 5 samples of AAC block were observed for compressive strength, density andwater absorption. The compressive strength of the AAC block was found to be 4.324 N/mm2 even with a low density of 617.6 kg/m3when compared to a 3.402 N/mm2 average compressive strength of brick of 1685.8 kg/m3 density. However, the water absorption of the AAC block wasfound higher than that of the Clay brick.

As we know that large population in the world are living in regions of seismic hazards, at risk from earthquakes of varying severity and frequency of occurrence. The significant loss of life and damage of property occurs every year due to earthquake. Here the one of the best solution to mitigate the effect of earthquake on building is base isolation technique. The main mechanism of seismic isolation is to decouple the structure from base by providing seismic isolators. The Lead Rubber Bearing (LRB) is mounted beneath the superstructure in base isolation system. The significant of base isolation device is to minimize the horizontal acceleration transmitted to the superstructure. It is very promising technology to protect different structures from seismic excitation. In this research, GF+4 storied regular, plan irregular (re-entrant corners) and vertical irregular (vertical geometric irregularity) building models were considered for both fixed base and base isolation in SAP. Response spectrum method analysis under IS1893:2002 was conducted in analysis software for the result of seismic performance parameters. The output results of seismic parameters were interpreted and compared. The SAP analysis results were compared and validated by ETABS software. Lead rubber bearings were designed as UBC 97 and used for base isolation. The research concluded that, Plan and vertical irregular LRB building found more seismically performed than regular LRB building however vertical irregular LRB building showed better performance as comparison to plan irregular LRB building.

Better performance of infrastructure development depends on the several factors whereas job satisfaction seems one of the key factors. Large Number of Engineers was de-motivated to accept the staff adjustment policy. This study focuses to find the job satisfaction of civil Engineers in Gandaki Provincial Government. Data were collected through structured questionnaires. Questionnaires were distributed into 134 Engineers. The responses from 103 (76.87%) respondents were documented. The study adopted descriptive and interferential statistics analytical using Statistical Program for Social Sciences (SPSS) and MS- Excel. The correlation coefficient varied between 0.292 (pay/salary) to 0.612 (Work Group). The result shows that there was significant relationship between work group and job satisfaction (r=0.612, p<0.01).There was no significant difference in level of satisfaction based on demographic factors like gender, academic qualification, Age Groups, Civil engineering sub sectors, designation level and time span for total years of experience. ANOVA test was carried out to test null and alternate hypothesis P value for each variable was recorded greater than 0.05. Multiple linear regression analysis was conducted considering job satisfactions as dependent variable, R square was recorded as of 0.582 indicates that the independent variables (predictors) such Supervisors (Bosses), Work Group, Working Conditions, Promotion Opportunities, Pay / Salary, Transfer and Posting factors used in this model explained about 58.2% of the total variation in dependent variable job satisfaction of employees under study.