CEA tri 1

foundations

supports and distributes building loads

foundation wall

wall below exterior walls, provides support

sill plate

made of treated lumber, anchored to foundation wall

rim joist

final joist that caps the end of the row of joists that support a floor

floor joists

horizontal, carry floor load, spread 16" on center

sub floor

structural floor joined to joists, supports finished floor, made of 3/4" plywood or OSB

sole plate

horizontal, at bottom of studs, holds wall together, provides surface for attaching wall to supporting structure

wall stud

vertical frame, spaced 16" or 24" apart

top plate

horizontal structure, top of studs, usually double top plate

header

horizontal structure, supports cripple studs over openings like doors and windows

jack/trimmer stud

vertical frame, holds up and carries load from header

sill plate

window sill

cripple stud

any shortened stud, usually above doors and windows or below windows

insulation

fluffy stuff, restricts flow of heat or sound

sheathing

covering placed over exterior studs or rafters, lateral brace, base below exterior finish materials

vapor barrier

new houses have plastic, minimizes amount of air that enters and exits

gypsum wall board

drywall

moisture barrier

house wrap, breathes so moisture can escape, stops rain from getting in, prevents water damage and mold/mildew

siding

boards or shingles, surface outside walls, protects against moisture and elements

roof truss

structural members joined to form rigid framework, triangles

ice and water shield

prevents wind driven rain, melting ice, and snow from leaking into roof

drip edge flashing

protects edges of roof sheathing from water, extends past edge of sheathing, supports outermost edges of shingles

tar paper

under roofing for water protection

shingles

create watertight wind resistant seal

soffit

ventilated to allow flow of air

fascia

long straight board that runs along lower edge of roof, carries gutters, supports bottom row of tiles

concrete

high compressive strength, but poor tensile, sold by volume (yd^3)

rebar

added to concrete to increase tensile strength

roof pitch

rise/run

modes of heat transfer: conduction

through solid, transmits energy from one molecule to another

modes of heat transfer: convection

by circulation of liquid or gas

modes of heat transfer: radiation

by rays, waves, or particles

BTU (british thermal unit)

unit of energy, amount of heat required to raise the temp of 1lb of water by 1degF

BTU/hr

measuring heating power of a system (ie furnace)

r value

measurement of thermal resistance, indicates effectiveness of insulation

u factor

coefficient of heat conductivity, 1/rvalue

deltaT

temperature differential, difference between the design outside temp and the design inside temp