Prerequisite2: Environmental Tobacco Smoke (ETS) Control
This requirement is issued for controlling air quality due to tobacco smoking. Concept of environmental tobacco smoke (ETS) control has to be implemented. The project can follow the criteria based on type of project and selected option. However, the basic idea is about controlling smoking in the building. There are various strategies which the project can adopt. Some are rigorous rule such as smoking prohibition in building area while some are less stringent requiring providing smoking area, using specific material for leakage protection, including performance’s verification test for measuring air leakage rate and building envelope’s air tightness. Furthermore, the designer needs to utilize the effective ventilation air control system and the concept of ETS transfer minimization in living areas.
Credit 1: Outdoor Air Delivery Monitoring (1 point)
This credit is about monitoring CO2 concentrations and outdoor airflows, which directly relate to ventilation system. The project will be awarded with one point by: 1) permanently installation of monitoring system, to verify that it meets the minimum design requirements and 2) monitoring CO2 concentrations within all densely spaces, which are ventilated by mechanical equipment, or within all spaces for naturally ventilated areas.
Both mechanical and natural case, CO2 concentration rate must be between 3 and 6 feet above the floor. In addition to mechanical system, minimum outdoor air intake flow has to be measured and its value should be between ± 15% of design minimum rate. Nevertheless, there are many strategies, which can be addressed for this credit. For receiving the point, not only CO2 and airflow measurement equipments must be installed, but the alarm system must be included to notify the operator when measured rates exceed the allowance
Credit 2: Increased Ventilation (1 point)
This subcategory relates with improvement of outdoor air ventilation system. The project needs to follow the ASHRAE standard for mechanically ventilated spaces, by increasing at least 30% above the minimum values required in standard or follow the CIBSE Applications Manual for naturally ventilated spaces. For the latter, CIBSE generally addresses many involved issues that is, heat gain, transient occupancy, seasonal mixed-mode ventilation, floor plan, courtyard or atrium layout, zonal mixed-mode ventilation, perimeter zone conditions, control of ventilation by occupants, temperature and relative humidity control, and humidification.
In addition to previous requirement, the project needs to meet one of the following options: 1) verify that the ventilation system is designed accordance with CIBSE manuals, or 2) use computer software or analytical tools for room-by-room airflow rate calculation and prove that it meets the ASHRAE’s minimum requirement, which focus on ventilation rate, indoor air quality, and design documentation procedure.
To earn this one point credit, heat recovery concept may be implemented for mechanically spaces. Similarly, there are design steps proposed for naturally ventilated
Prerequisite2: Environmental Tobacco Smoke (ETS) ControlThis requirement is issued for controlling air quality due to tobacco smoking. Concept of environmental tobacco smoke (ETS) control has to be implemented. The project can follow the criteria based on type of project and selected option. However, the basic idea is about controlling smoking in the building. There are various strategies which the project can adopt. Some are rigorous rule such as smoking prohibition in building area while some are less stringent requiring providing smoking area, using specific material for leakage protection, including performance’s verification test for measuring air leakage rate and building envelope’s air tightness. Furthermore, the designer needs to utilize the effective ventilation air control system and the concept of ETS transfer minimization in living areas.Credit 1: Outdoor Air Delivery Monitoring (1 point)This credit is about monitoring CO2 concentrations and outdoor airflows, which directly relate to ventilation system. The project will be awarded with one point by: 1) permanently installation of monitoring system, to verify that it meets the minimum design requirements and 2) monitoring CO2 concentrations within all densely spaces, which are ventilated by mechanical equipment, or within all spaces for naturally ventilated areas.Both mechanical and natural case, CO2 concentration rate must be between 3 and 6 feet above the floor. In addition to mechanical system, minimum outdoor air intake flow has to be measured and its value should be between ± 15% of design minimum rate. Nevertheless, there are many strategies, which can be addressed for this credit. For receiving the point, not only CO2 and airflow measurement equipments must be installed, but the alarm system must be included to notify the operator when measured rates exceed the allowanceCredit 2: Increased Ventilation (1 point)This subcategory relates with improvement of outdoor air ventilation system. The project needs to follow the ASHRAE standard for mechanically ventilated spaces, by increasing at least 30% above the minimum values required in standard or follow the CIBSE Applications Manual for naturally ventilated spaces. For the latter, CIBSE generally addresses many involved issues that is, heat gain, transient occupancy, seasonal mixed-mode ventilation, floor plan, courtyard or atrium layout, zonal mixed-mode ventilation, perimeter zone conditions, control of ventilation by occupants, temperature and relative humidity control, and humidification.In addition to previous requirement, the project needs to meet one of the following options: 1) verify that the ventilation system is designed accordance with CIBSE manuals, or 2) use computer software or analytical tools for room-by-room airflow rate calculation and prove that it meets the ASHRAE’s minimum requirement, which focus on ventilation rate, indoor air quality, and design documentation procedure. To earn this one point credit, heat recovery concept may be implemented for mechanically spaces. Similarly, there are design steps proposed for naturally ventilated
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