Indoor Environmental Quality Workplace Environment

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1 0 Overview, The purpose of this report is to examine the connection between sustainable design criteria used in the. design of the Minnesota Senate Building MN SEN facility and occupants satisfaction with their work. environments located in the facility This report communicates responses from employees about the. overall facility and their workplace WP The facility was designed using the B3 Guidelines formerly. known as the Minnesota Sustainable Building Guidelines or MSBG which were in effect at the time. that the renovation and addition were funded It was completed for occupancy in January 2016 The B3. Guidelines track specific state funded B3 buildings as a means of demonstrating real outcomes aimed. at the conservation of energy resources creation and maintenance of healthy environments and. occupants satisfaction with their work environments The Sustainable Post Occupancy Evaluation. Survey SPOES was developed to assess human outcomes in workplace classroom and residence hall. settings in compliance with the B3 Guidelines project tracking requirements This is a report of. occupants hereafter called employees responses from the survey conducted in April 2017. This SPOES report focuses on employees satisfaction with the physical environment as related to 26. indoor environmental quality IEQ criteria such as lighting thermal and acoustic conditions in their. primary workspaces i e offices Employees satisfaction with the facility site building and interior. and the effect of the facility s physical environment on their perceptions of their work performance. and health also are included Finally a brief look at employees commuting and physical activities. within the building are reported The report provides descriptive information about employees. perceptions of the IEQ of their work environments In addition this information serves the broader. development of knowledge regarding the influence of IEQ on employees. 2 0 Method, SPOES consists of a self administered Internet based questionnaire submitted to and completed by. employees The SPOES questionnaire has been tested for validity measures what it is intended to. measure and reliability repeatability or replicability of findings Employees rate their level of. satisfaction on a Likert type scale measurement scale from 1 very dissatisfied to 7 very satisfied. with IEQ of the facility and their primary workspaces They also rate the influence of their physical. environment on their perception of their work performance and health on a scale from 1 hinders to 7. The report provides a descriptive summary of the results stated as a mean average of all responses. standard deviations SD how different scores are from each other and the mean and number of. responses N for each question analyzed The mean for a 7 point scale is 4 00 Lower or higher means. reflect stronger tendencies towards dissatisfaction satisfaction and hinders enhances Means that are. close to the center of the scale 4 are considered to be neither dissatisfied hinders or. satisfied enhances, When interpreting mean responses the following labels were used. 1 00 3 50 dissatisfied or hinders, 3 51 4 50 neither dissatisfied or hinders nor satisfied or enhances. 4 51 7 00 satisfied or enhances, An IEQ Score is also calculated for employees satisfaction with IEQ criteria in their primary workspaces.
This is a statistical combination of all category level explained below IEQ scores which results in a. single IEQ score for all respondents and is reported in an IEQ Scorecard. MN SEN WP POE 2017,2 1 Description of the Questionnaire. Employees first rate their level of satisfaction with the facility site building and interior and the. influence of their physical environment on their perception of their work performance and health. Then they respond to questions about their satisfaction with their primary workspaces in relation to. IEQ criteria from the B3 Guidelines Additionally employees demographic physical activity and. commuting practice data are collected to provide context for the study. In the SPOES questionnaire the 26 IEQ criteria listed below are evaluated There are two levels of. criteria categories and attributes As shown in the list the overall criteria are boldfaced and called. categories or category level criteria A category is broader or more general such as Overall View. Conditions or Overall Indoor Air Quality Some categories have attributes or attribute level criteria. and provide greater detail about the category For example Overall Thermal Conditions is a category. level question and there are four attribute level questions related to thermal conditions such as. adjustability air velocity draft humidity and temperature Overall Acoustic Conditions is a category. with attributes of employees ability to hear desired sounds and their ability to limit undesired sounds. There are 12 category level and 14 attribute level questions Means are calculated and reported for all. category and attribute level criteria, An IEQ Satisfaction Score is also calculated for employees satisfaction with IEQ in their primary. workspaces This is a statistical combination of the 12 category level criteria only and results in a single. mean IEQ Satisfaction Score for all employees satisfaction with the physical conditions of their primary. workspaces Attribute level criteria are not included in the IEQ Score because unequal weight would be. given to criteria that have both category and attribute level questions. In the following list category boldface criteria are listed in alphabetical order If a category has. attributes they are listed with the category,Overall Acoustic Quality Overall Furnishings. Ability to hear desired sounds Function of furnishings. Ability to limit undesired sounds Adjustability of furnishings. Overall Appearance aesthetics Overall Indoor Air Quality. Overall Cleaning and Maintenance Overall Privacy,Overall Daylighting Conditions Overall Technology. Amount of daylighting Access to electric outlets, Adjustability of daylighting Overall Thermal Conditions.
Overall Electric Lighting Conditions Adjustability of thermal conditions. Amount of electric lighting Air velocity drafty stagnant. Adjustability of electric lighting Humidity dry or moist. Adjustability of task lighting Temperature hot or cold. Overall Vibration and Movement,Overall View Conditions. MN SEN WP POE 2017,2 2 Limitations, Employees participation is voluntary and responses are self reported As is true with all survey. research the responses indicate employees perceptions There were no physical measurements e g. temperature humidity or lighting levels of the environment taken This study is limited to employees. perceptions,3 0 Sample Description,3 1 Description of Building. The MN SEN is located at 95 University Avenue St Paul MN The building see Figure 1 is a five story. plus a mechanical penthouse 278 000 square foot building that includes legislative chambers office. space conference rooms and main entry lobbies Only the overall facility and primary workspaces. were included in this study The building serves as the office space for members of the Minnesota. Senate and their staff and other support staff, Figure 1 MN SEN Photo courtesy of MN Dept of Administration. 3 2 Description of Respondents, This survey was administered to 324 employees with workspace in the facility during April 2017 The.
response rate to the questionnaire was approximately 53 Of those responding 59 were male 40. were female and 1 were other The mean age of respondents was 41 years with a range from 20 79. years of age, The MN SEN was completed and ready for operation in January 2016 Since that time 48 of the. respondents reported that they worked at the MN SEN facility for 1 2 years and 52 of the. respondents spent less than one year at this site Relating to hours worked during a typical week at. MN SEN 84 of the employees reported they spend 40 hours a week in the facility 15 spend 30 40. hours a week at MN SEN and less than 5 spend 20 29 hours or less than 20 hours at the facility. MN SEN WP POE 2017, Relating to the time employees spend per week in their primary workspace 39 of the employees. reported they spend more than 75 of their weekly time in their primary workspace 45 spend 51. 74 of their time in their primary workspace 14 spend 25 50 of their time in their primary. workspace and 2 spend less than 25 of their time in their primary workspace These responses. indicate the amount of time employees are exposed to IEQ conditions in their workplace environment. MN SEN is a workplace with private offices enclosed shared offices workstations cubicles with low. partitions both low and high partitions and benching multiple flat worksurfaces divided with low. partitions serving as primary workspaces Employees indicated that 47 of their primary workspaces. were located within 15 feet of an exterior window 50 of the employees were not within 15 feet of an. exterior window and 3 were not sure how far they were from an exterior window. It is important to recognize that Senators and their staff do not have permanent office space in the. building Depending on the majority political party elected to office they may be required to move to. other offices before the start of the next legislative session Also not all primary workspaces were. occupied in January 2016 some were occupied later in the year. 4 0 Findings and Discussion, 4 1 MN SEN Facility Site Building and Interior Overall Satisfaction Work Performance and. Employees responded to questions concerning the MN SEN facility site building and interior and. their overall satisfaction with the facility overall perceptions of their work performance in relation to. the facility and their overall perception of their health in relation to the facility Table 1 shows the. means and standard deviations of their responses as well as how the responses are interpreted Figure. 2 is a graph that shows the mean for each question which is identified with a blue mark The standard. deviation is shown by the green red vertical bar with green representing satisfied or enhanced and. red representing dissatisfaction or hindered Gray represents the neither nor range of responses In. cases where there were no dissatisfied responses the bar may be all green or gray and green This. graph is simply a visual image of the findings from Table 1. Table 1 MN SEN facility overall satisfaction work performance and health. Overall Mean SD N Interpretation,Satisfaction 5 05 1 51 172 Satisfied. Work Performance 4 87 1 48 171 Enhanced,Health 4 64 1 38 172 Enhanced.
MN SEN WP POE 2017,MN SEN Facility site building and interior. Satisfaction Work Performance Health, Figure 2 MN SEN facility overall satisfaction work performance and health. Results indicate that employees were satisfied M 5 05 with the MN SEN physical environment of the. facility building site and interior and reported that their overall work performance was enhanced. M 4 78 by the facility Employees reported that their overall health was enhanced M 4 64 by the. 4 2 Primary Workspace Overall Satisfaction Work Performance and Health. Employees responded to questions concerning their overall satisfaction and overall perceptions of their. work performance and health as related to their primary workspace e g private office workstation. or other primary workspace Table 2 shows the means and standard deviations of their responses as. well as how the responses are interpreted Figure 3 is a visual image of the findings from Table 2 an. explanation of the graph was given for Figure 2, Table 2 MN SEN primary workspace overall satisfaction work performance and health. Overall Mean SD N Interpretation,Satisfaction 4 88 1 64 168 Satisfied. Work Performance 4 92 1 57 168 Enhanced,Health 4 78 1 41 168 Enhanced.
MN SEN WP POE 2017,MN SEN Primary Workspace,Satisfaction Work Performance Health. Figure 3 MN SEN primary workspace overall satisfaction work performance and health. Results indicate that employees were satisfied M 4 88 with their primary workspace their overall. work performance was enhanced M 4 92 by their primary workspace and their overall health was. enhanced M 4 78 by their primary workspace, 4 3 Primary Workspace Satisfaction with Indoor Environmental Quality IEQ. Employees responded to questions concerning their satisfaction with IEQ categories thermal. conditions indoor air quality acoustic conditions etc related to their primary workspace e g private. office workstation or other primary workspace Table 3 shows the means and standard deviations of. their responses from highest to lowest mean as well as how the responses are interpreted Figure 4 is. a visual image of the findings from Table 3 an explanation of the graph was given for Figure 2. MN SEN WP POE 2017, Table 3 MN SEN primary workspace satisfaction with IEQ criteria. IEQ Criteria 1 26 Mean SD N Interpretation, Category level criteria are bold face D Dissatisfied. S Satisfied, 1 Overall cleaning and maintenance 5 28 1 89 163 Satisfied.
2 Overall vibration and movement 5 13 1 53 164 Satisfied. 3 Amount of electric light 5 05 1 67 163 Satisfied. 4 Ability to hear desired sounds 4 95 1 60 164 Satisfied. 5 Function of furnishings 4 95 1 69 164 Satisfied, 6 Adjustability of furnishings 4 94 1 74 164 Satisfied. 7 Overall technology 4 89 1 60 164 Satisfied, 8 Overall indoor air quality 4 88 1 65 163 Satisfied. 9 Overall electric lighting conditions 4 80 1 83 163 Satisfied. Indoor Environmental Quality Workplace Environment Minnesota Senate Building MN SEN Saint Paul MN May 2017 Minneapolis MN Sustainable Post Occupancy Evaluation Survey SPOES B3 Guidelines Caren S Martin PhD Abimbola Asojo PhD contact caren mgdesignresearch com aasojo umn edu Denise A Guerin PhD Suyeon Bae MS Martin amp Guerin Design Research LLC College of Design

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