Consider whether mechanical or natural ventilation will be used. When considering natural ventilation systems, review ASHRAE-55 section 5.3 for a description of the relevant requirements. 

Submitted by on

Consider whether mechanical or natural ventilation will be used. When considering natural ventilation systems, review ASHRAE-55 section 5.3 for a description of the relevant requirements. 

For schools with indoor swimming pools, the natatorium (swimming pool area) must meet the requirements of the ASHRAE HVAC Applications Handbook, 2003 edition, Chapter 4 (Places of Assembly), Typical Natatorium Design Conditions. Purchase a copy of the Han

Submitted by on

For schools with indoor swimming pools, the natatorium (swimming pool area) must meet the requirements of the ASHRAE HVAC Applications Handbook, 2003 edition, Chapter 4 (Places of Assembly), Typical Natatorium Design Conditions. Purchase a copy of the Handbook and review the requirements. Relative humidity levels of 40%–60% have to be maintained; 50% is optimal. 

Identify any unique programming or climate conditions that might make it tricky to get the credit. Fitness rooms, gyms, natatoriums, or very humid climates often create conditions that require special consideration.

Submitted by on

Identify any unique programming or climate conditions that might make it tricky to get the credit. Fitness rooms, gyms, natatoriums, or very humid climates often create conditions that require special consideration.

The mechanical engineer and architect review ASHRAE-55 along with the credit requirements in the context of the project. ASHRAE-55 requires that you establish a comfort zone based on several variables that affect occupant comfort, and design mechanical sy

Submitted by on

The mechanical engineer and architect review ASHRAE-55 along with the credit requirements in the context of the project. ASHRAE-55 requires that you establish a comfort zone based on several variables that affect occupant comfort, and design mechanical systems to create thermal conditions within the comfort zone in each occupied space. Comfort zone calculations are based on the following variables:

Metabolic rate
Clothing insulation level
Air temperature
Radiant temperature
Air speed
Humidity

Base building mechanical systems have to allow for the tenant fit-out to meet the requirements of ASHRAE-55. If all the mechanical systems are relegated to tenant fit-out, core-and-shell projects are not eligible. Consider this early in the planning phase

Submitted by on

Base building mechanical systems have to allow for the tenant fit-out to meet the requirements of ASHRAE-55. If all the mechanical systems are relegated to tenant fit-out, core-and-shell projects are not eligible. Consider this early in the planning phase of a LEED-CS project. 

Have a combination of side-lighting and/or top-lighting that meets the LEED definition of a daylighting zone in at least 50% of all regularly occupied spaces. Given that this path is based on prescriptive design requirements that an existing building obvi

Submitted by on

Have a combination of side-lighting and/or top-lighting that meets the LEED definition of a daylighting zone in at least 50% of all regularly occupied spaces. Given that this path is based on prescriptive design requirements that an existing building obviously would not have been designed and constructed to, buildings that comply via this path do so accidentally, and assessing the design against these prescriptive requirements would be difficult and time-consuming for most project teams. For example, the team would need to assess potential sidelighting daylight zones by:

It is unlikely that a simulation model will have been performed in the past for most existing buildings, and the cost associated with doing this solely to document the LEED credit would not be a wise expenditure. 

Submitted by on

It is unlikely that a simulation model will have been performed in the past for most existing buildings, and the cost associated with doing this solely to document the LEED credit would not be a wise expenditure. 

Subscribe to