OBJ 1.5 Flashcards
Determine how to detail the integration of multiple building systems and technologies (U/A) You must also be able to detail and resolve the intersection of roof, curtain wall, cladding, window, floor, structural, interior, and other architectural systems as they come together within a building project.
Brick Faces
Brick Faces Answers
Brick Pattern
Brick Pattern Answers
Compare and contrast expansion, control, and construction joints.
Expansion joints are continuous breaks in a material to accommodate movement due to thermal expansion. Expansion joints can also be called isolation joints. Control joints are breaks in a material that are designed to create a weak spot so when a material, such as a concrete slab, inevitably cracks, the cracking occurs within the control joint. A construction joint describes the joint created when construction stops and starts again at a later date.
Through-Wall Flashing
Continuous flashing used in water sensitive areas such as windowsills. It extends through the entire wall section to prevent water from entering the main portion of the wall and causing damage.
Termination Bar
A preformed detailing element that is placed at the vertical end points of various waterproofing, flashing, and barrier systems to provide a watertight connection at the system’s termination.
Vapor Barrier
Application Methods: mechanically fastened, peel and stick, or fluid applied Water Vapor Permeance: “vapor permeable” types allow water vapor to pass through them, and “vapor impermeable” ones do not; different levels of permeance are determined by standardized testing Continuity: Wrap behind door and window frames and overlap with roofing and waterproofing membrane
Lintel
A horizontal structural member found above wall openings (e.g., windows, doors) that is used to transfer the load from the wall above away from the opening.
Portland Cement
Portland cement is a manufactured product and a basic ingredient in concrete, mortar, grout, plaster, and stucco. When mixed with water and sand and allowed to harden, it becomes rock hard.
Compare and contrast grout and mortar.
Mortar is for bonding; it holds things together, such as the joints between bricks or a bed for tile. Grout is a filler; it is of a thinner consistency that can be poured, for example, into the cavities of masonry walls. Both come in multiple variations for differing purposes.
Chamfer
A beveled edge formed by cutting away a corner in a construction material. Chamfers are common on concrete corners to prevent the corner from breaking off. Also found on furniture.
Construction Joints
Horizontal or vertical joints between successive concrete pours.
Expansion Joints
Joints that allow free movement of adjacent parts due to expansion or contraction of concrete; typically waterproof, watertight, filled with an elastic filler; required at buildings over 200’ long, at joints of building wings, and at additions.
Control Joints
Joints that allow for shrinkage of large areas, as well as control and induce cracking to occur along the joint.
Isolation Joints
Joints located at slab on grade, columns, or walls to allow for independent movement.
Acid Etching
Process of cutting into a surface (concrete, glass, etc.) by applying acidic, caustic, or abrasive substances.
Abrasive Blasting (Sandblasting)
Process of forcibly propelling a stream of abrasive material against a surface under high pressure to smooth, etch, or clean it.
Bush Hammering
Process of creating a rough, pockmarked texture on concrete or stone that resembles naturally weathered rock.
Honing
Process of sanding/polishing for a matte or slightly reflective surface.
Lamella
A thin finished top layer of an engineered wooden floor.
Anodizing
Process of coating aluminum with a protective oxide layer by an electrolytic process.
Galvanizing
Coating iron or steel with a protective layer of zinc by immersing it in a molten bath.Purpose of Galvanizing: when metal is going to be used in an environment where corrosion is likely, it is often galvanized so that it will be able to withstand the conditions.
Galvanic Corrosion
An electrochemical process where one metal corrodes preferentially to another when they both are in electrical contact and immersed in an electrolyte (which is a liquid or gel that contains ions and can be decomposed by electrolysis).
Monel
Metal used for roofing, flashing, countertops, and sinks.
Bessemer Process
Steelmaking procedure where carbon, silicon, and other impurities are removed from iron to make steel.
Ferrous Alloy
Alloys that contain a lot of iron (e.g., stainless steel, galvanized iron).
Nonferrous Alloys
Nonferrous alloys that do not contain much iron (e.g., aluminum, copper, zinc).
Efflorescence
Efflorescence consists of one or more water-soluble salts that were originally present in the masonry unit or in the mortar. Efflorescence is brought to the surface and deposited there by water that seeped into the masonry, dissolved the salts, then migrated to the surface and evaporated.
Adhered Masonry Veneer
Veneer secured and supported through the adhesion of an approved bonding material applied to an approved backing.
Allowable Stress Design
A method of proportioning structural members, such that elastically computed stresses produced in the members by nominal loads do not exceed specified allowable stresses (also called “working stress design”).
Audible Alarm Notification Appliance
A notification appliance that alerts by the sense of hearing.
Bond Beam
A horizontal grouted element within masonry in which reinforcement is embedded.
Certificate of Compliance
A certificate stating that materials and products meet specified standards or that work was done in compliance with approved construction documents.
Head Joint
Vertical mortar joint placed between masonry units within the wythe at the time the masonry units are laid.
Micropile
A micropile is a bored, grouted-into-place deep foundation element that develops its load-carrying capacity by means of a bond zone in soil, bedrock, or a combination of soil and bedrock.
Sallyport
A security vestibule with two or more doors or gates whose intended purpose is to prevent continuous and unobstructed passage by allowing the release of only one door or gate at a time.
Slip Resistant
A rough finish that is not abrasive to the bare foot.
Subdiaphragm
A portion of a larger wood diaphragm designed to anchor and transfer local forces to primary diaphragm struts and the main diaphragm.
Tactile Sign
Sign containing raised characters and/or symbols and accompanying Braille.
Tactile
An object that can be perceived using the sense of touch.
Tie-Down (Hold Down)
A device used to resist uplift of the chords of shear walls.
Smoke Barrier
A continuous membrane, either vertical or horizontal, such as a wall, floor, or ceiling assembly, that is designed and constructed to restrict the movement of smoke.
Self-Closing
As applied to a fire door or other opening protective, it means being equipped with a device that will ensure door closure after it has been opened.
Ashlar Masonry
Masonry composed of various-sized rectangular units having sawed, dressed, or squared bed surfaces, properly bonded and laid in mortar.
Coursed Ashlar
Ashlar masonry is laid in courses of stone of equal height for each course, although different courses shall be permitted to be of varying height.
Glass Unit Masonry
Masonry composed of glass units bonded by mortar.
Plain Masonry
Masonry in which the tensile resistance of the masonry is taken into consideration and the effects of stresses in reinforcement are neglected.
Grade SW
Grade for building bricks: Severe Weathering (Oregon, most of the eastern half of the U.S.).
Grade MW
Grade for building bricks: Moderate Weathering (Midwest, most of Washington).
Grade NW
Grade for building bricks: Negligible Weathering (along southern U.S. border)
Type FBX
Grade for Facing Bricks: high degree of perfection, narrow color range, slight size variation.
Type FBS
Grade for Facing Bricks: wide range of color and greater size variation per unit.
Type FBA
Grade for Facing Bricks: Nonuniformity in size, color, and texture per unit.
Running Bond
Entire row of stretchers.
English Bond
Alternate course of headers and stretchers.
Common Bond
Header course every sixth course; head joints are aligned between header and stretcher courses.
Flemish Bond
Alternates headers and stretchers in each course.
Visible Transmittance
VT is the ratio of visible light entering the space through the fenestration assembly to the incident visible light. This includes the effects of glazing material and frame and is expressed as a number between 0 and 1, where 0 is no light transmittance and 1 is 100%.
Thermal Transmittance (U)
Coefficient of heat transmission (air to air) through a building component or assembly, equal to the time rate of heat flow per unit area and unit temperature difference between the warm side and cold side air films. It is the inverse of R.
Thermal Conductance (C)
The time rate of heat flow through a unit area of a given material in terms of the unit temperature difference between two surfaces.
Thermal Resistance (R)
The reciprocal of thermal conductance, equal to the sum of the weighted R-values for each layer in the component, such as air films, thermal insulation, framing, and glazing.
Solar Heat Gain Coefficient
The ratio of the solar heat gain entering the space through the fenestration assembly to the incident solar radiation. This coefficient includes directly transmitted solar heat and absorbs solar radiation that is reradiated, conducted, or convected into the space.
Bargeboard
The board on a gable end of a roof.
What are the actual dimensions of the following nominal lumber sizes? 1”, 2”, 3”, 4”, 5”, 6”, 8”, 10”, and 12”.
1” = 3/4” 2” = 1 1/2” 3” = 2 1/2” 4” = 3 1/2” 5” = 4 1/2” 6” = 5 1/2” 8” = 7 1/4” 10” = 9 1/4” 12” = 11 1/4”
5/4 Lumber
Lumber that is 1.25” thick; often used for decking.
Haptic
Relating to the sense of touch.
Hearth
The area in front of the fireplace that protects the floor from sparks.
Flue
The path for smoke to travel up the chimney.
Smoke Shelf
Causes downdrafts in a fireplace to deflect back up.
Damper
Regulates airflow and prevents downdraft in a fireplace.