Segregation
The tendency of large aggregate to separate from the sand-cement mortar in the concrete mix.
Sensible Heat
Heat that causes a detectable change in temperature.
Seismic Area
A geographic area where earthquake activity may occur.
Seismic Load
Forces produced on a structural mass by the movements caused by an earthquake.
Semi-gloss paint or enamel
A paint or enamel made so that its coating, when dry, has some luster but is not very glossy. Bathrooms and kitchens are normally painted semi-gloss
Semitransparent
Coatings that allow some of the texture and color of the substrate to show through.
Semivolatile Organic Compound (Svoc)
A carbon-containing (organic) substance that volatilizes relatively slowly at typical ambient conditions. https://healthymaterialslab.org/tool-guides/hml-resources
Sedimentary Rock
Rock formed from the deposit of sedimentary materials on the bottom of a body of water or on the surface of the earth.
Security Glass
Glass panels assembled with multiple layers of glass and plastic to produce a panel that will resist impact.
Self-sealing shingles
Shingles containing factory-applied strips or spots of self-sealing adhesive.
Sensitization
The process of becoming allergic to a substance to which a person has been exposed. This process can occur before birth, during childhood, or in adulthood. https://healthymaterialslab.org/tool-guides/hml-resources
Settlement
Shifts in a structure, usually caused by freeze-thaw cycles underground.
Septic system
An on site waste water treatment system. It usually has a septic tank which promotes the biological digestion of the waste, and a drain field which is designed to let the left over liquid soak into the ground. Septic systems and permits are usually sized by the number of bedrooms in a house.
Service Equipment
Main control gear at the service entrance, such as circuit breakers, switches, and fuses. The equipment needed to control and cut off the power supply to a building, such as switches and circuit breakers.
Service Entrance
The point at which power is supplied to a building and where electrical service equipment, such as the service switch, meter overcurrent devices, and raceways, are located.
Service lateral
- Underground power supply line.
Setback Thermostat
A thermostat with a clock which can be programmed to come on or go off at various temperatures and at different times of the day/week. Usually used as the heating or cooling system thermostat.
Service Temperature
The maximum temperature at which a plastic can be used without altering its properties.
Service entrance panel
Main power cabinet where electricity enters a home wiring system.
Septic Tank
A watertight tank into which sewage is run and where it remains for a period of time to permit hydrolysis and gasification of the contents, which then flow from the tank and are absorbed in the soil.