Framing Assignment 4Print Set“Single Family Dwelling”

SFD

Windows & Doors

Openings:Windows and doors

• Major impact on the house’s appearance

• Many Style options

Windows and Doors: Major part of …. The comfort / safety of the house Energy performance of the house Many of them (Multiples) with variables = Scheduled

Windows & DoorsDoors - Labeled on plans with number inside circle

Windows – Labeled on plans with letter inside octagon or triangle

…Labels refers back to a schedule

Typical Section details

Head (top)

Jamb (side)

Sill (base)

R.O. (ROUGH OPNG.)F.O. (FINISH OPNG.)

Window Sections

•Size 6040 = 6’ W x 4’ L (or hgt.)

•Type - Operation •Glazing – glass type•Material – frame type

Window Schedule

Window Schedule

U-FACTOR

Solar Heat Gain Coefficient

Visible Transmittance

Air Leakage

4 Ways to Evaluate

WINDOWS

U-FACTORThe rate of heat loss is indicated in terms of the U-Factor of a window assembly. The insulating value is indicated by the R-Value which is the inverse of the U-Value.

The lower the U-Value the greater a windows resistance to heat flow and the better the insulating value.

U-FACTOR

The SHGC is the fraction of incident solar radiation admitted through a window.

SHGC is expressed as a number between 0 and 1. The lower a windows solar heat gain coefficient, the less solar heat it transmits.

Solar Heat Gain COEFFICIENT

The visible transmittance is an optical property that indicates the amount of visible light transmitted.

Theoretical values vary between 0 and 1, but most values are between 0.3 and 0.8

Visible Transmittance

Heat loss and gain occur by infiltration through cracks in the window assembly.

Air leakage is expressed in cubic feet of air passing through a square foot of window area.

.3 is recommended for Oregon

Air Leakage

Glass is coated with silver or tin oxide which allows visible light to pass through but reflects infrared heat radiation back into the room. Reduces heat loss in cool climates

Allows visible light to pass through but reflects infrared heat radiation away from the room, admits up to 40% less radiant heat from the sun. Reduces heat gain in warm climates

Low-E Windows

High number for cold climate. Low number for warm climates

The lower the number the better the insulating value

The best windows have air leakage rating between 0.1 and 0.6 cfm/ft.

Varies from 0 to 1.0 The higher the # the more light is transmitted.

Single-Glazed with Clear Glass

Single-Glazed with Bronze or Gray Tinted Glass

Double-Glazed with High Solar Gain Low-E Glass, Argon/Krypton Gas

Triple-Glazed** with Moderate Solar Gain Low-E Glass, Argon/Krypton Gas

YOU TUBE

Windows used for Egress

when there is Fire

Codes regulate size & location

Flashing...at window head and at sloped sill

Window in section view

…All efforts to direct water away from exterior bldg. wall

DOORS

Door

Head

Jamb

Sill

Example of Finish item found in Schedule – Trim ….Base (of wall)

Trim details•Crown (at ceiling)•Base (at floor)•Casing (around openings)•Wainscot (mid wall)