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  1. Air
  2. Healthy entrance

Healthy entrance

Features>Air>08. Healthy entrance

08. Healthy entrance

Occupants often track harmful contaminants indoors, including bacteria, heavy metals, lawn and agricultural pesticides, among other toxins. In addition, as occupants walk through entry doors, potentially polluted air can enter the building. Both of these modes of introducing outdoor pollutants to the indoor environment highlight the need for measures that minimize or prevent the introduction of potentially harmful substances to indoor spaces.

This feature requires methods to help prevent pollutants from entering a building. Requirements include floor systems that capture pollutants from shoes and strategies to reduce airflow from the outside to occupied indoor spaces.

Part 1: Permanent Entryway Walk-Off Systems

To capture particulates from occupant shoes at all regularly used entrances to the project, one of the following is installed and is maintained on a weekly basis:

a.1 Permanent entryway system comprised of grilles, grates or slots, which allow for easy cleaning underneath, at least the width of the entrance and 3 m [10 ft] long in the primary direction of travel.
b.1 Rollout mats, at least the width of the entrance and 3 m [10 ft] long in the primary direction of travel.
c.1 Material manufactured as an entryway walk-off system, at least the width of the entrance and 3 m [10 ft] long in the primary direction of travel.
Part 2: Entryway Air Seal

One of the following is in place to slow the movement of air from outdoors to indoors at the main building entrance:

a. Building entry vestibule with two normally-closed doorways.
b. Revolving entrance doors.
c. At least 3 normally-shut doors that separate occupied space from the outdoors. For example, a space on the fifth-floor could be separated by the exterior building doors, the first-floor elevator doors and the fifth-floor elevator doors. This option is applicable only for buildings whose entrance lobby is not a regularly occupied space.
Part 3: Playing Field Staging Area

The following must be present in all facilities adjacent to an exterior grass sports field, if present:

a.132 A staging area and mud room separates the playing field from the locker room to capture mud and moisture.
Cardiovascular
Immune
Respiratory

Applicability Matrix

Core & Shell New & Existing Buildings New & Existing Interiors
Part 1: Permanent Entryway Walk-Off Systems P P O
Part 2: Entryway Air Seal P P O
Part 3: Playing Field Staging Area - - -
Commercial Kitchen Education Multifamily Residential Restaurant Retail
Part 1: Permanent Entryway Walk-Off Systems - P P P O
Part 2: Entryway Air Seal - P P P O
Part 3: Playing Field Staging Area - P - - -

Verification Methods Matrix

Letters of Assurance Annotated Documents On-Site Checks
Part 1: Permanent Entryway Walk-Off Systems Visual Inspection
Part 2: Entryway Air Seal Visual Inspection
Part 3: Playing Field Staging Area Architect Spot Check

1

U.S. Green Building Council. LEED v4: Reference Guide for Building Design and Construction. Washington D.C.: U.S. Green Building Council; 2013: 37, 43-44, 541-552, 567, 605, 623, 645-53, 658-61, 682-3, 685-6, 723-4.
08.1.a

USGBC's LEED v4: Reference Guide for Building Design and Construction EQ Credit: Enhanced Indoor Air Quality Strategies requires permanent entry walk-off systems.
08.1.b

USGBC's LEED v4: Reference Guide for Building Design and Construction EQ Credit: Enhanced Indoor Air Quality Strategies requires permanent entry walk-off systems.
08.1.c

USGBC's LEED v4: Reference Guide for Building Design and Construction EQ Credit: Enhanced Indoor Air Quality Strategies requires permanent entry walk-off systems.
132

Wenger Corporation. Planning your athletic facility. http://www.wengercorp.com/Construct/docs/Athletic%20Planning%20Guide%20by%20Wenger%20GearBoss.pdf. Published 2011. Accessed March 25, 2015.
08.3.a

The guide states that supporting spaces are critical to the function of the athletic program, including ares such as a staging area for helping to prevent dirt and moisture from entering the facility.
Features>Air>08. Healthy entrance