09 Flashcards
(105 cards)
Effect of relative humidity on comfort sensation
30% change in RH is equal to about 2° F of thermal change. Higher humidity makes hot air more uncomfortable.
Roof Curb
Mechanical equipment mounted on roofs must be placed on curbs so they are level and protected from the precipitation that falls on the roof.
Effectiveness of air filters
Effectiveness is dependent on two factors: efficiency of the collector and the rate of air-circulation.
Adsorption Filters
Used for filtering gaseous contaminants. To adsorb means to hold liquid or gas particles near the surface of a material. They are usually made of charcoal or activated carbon.
Multiple Chemical Sensitivity
A condition in which people are sensitive to “normal” amounts of environmental contaminants.
SBS
The term “sick building syndrome” (SBS) is used to describe situations in which building occupants experience acute health and comfort effects that appear to be linked to time spent in a building, but no specific illness or cause can be identified. The complaints may be localized in a particular room or zone, or may be widespread throughout the building. In contrast, the term “building related illness” (BRI) is used when symptoms of diagnosable illness are identified and can be attributed directly to airborne building contaminants.
The stack effect only works when outside air is ______ (cooler/warmer) than inside air.
Cooler.
Switch
In electrical circuits, switches “make” or “break” a circuit by interrupting the current.
Service Line
The overhead wire from a transformer on a utility pole to the weather head; also called the service drop.
Riser
A vertical pipe or conduit that carries electrical wiring.
Weather Head
The weatherproof head where overhead electrical service enters a building.
True or False? Higher FARs indicate greater building volume on a given parcel of land.
True. The goal of calculating Floor Area Ratio (FAR) is to see how large the footprint of a new building can be on a given lot of land as dictated by the local zoning ordinance.
Identify the following common abbreviations and notations used in construction drawings: PSF, COL, CONT, GYP BD, AFF, HR, VTR, NIC, GALV, GFI, FD, BM, ADJ, BC, EX, RO, MO, RM, SIM, and WF.
PSF = pounds per square footCOL = columnCONT = continuousGYP BD = gypsum boardAFF = above finished floorHR = hourVTR = vent through roofNIC = not in contractGALV = galvanizedGFI = ground fault interrupterFD = floor drainBM = benchmarkADJ = adjustableBC = bottom of curbEX = existingRO = rough openingMO = masonry openingRM = roomSIM = similarWF = wide flange
Keynote
A method for noting details, where items in details are called out by their specification section number.
Composite Construction
A construction system using two or more dissimilar materials; typically refers to concrete and steel used together.
Double Wythe Masonry Wall
A wall formed with two masonry units thick, grouted solid.
Hardwood
Softwood
Mostly harvested from deciduous trees (i.e., oak, maple, birch), hardwoods are often used as finishmaterials and furniture. Typical applications include flooring and millwork. Hardwoods can be painted orstained depending on the desired application.
Mostly harvested from coniferous trees (i.e., Douglas Fir, pine), softwoods are often used as structural lumber. They can also be used for furniture and finishes, but are less dense than hardwoods so they are more prone to damage. Softwoods can be painted or stained but are often left unfinished in hidden applications.
Plastic Laminate
A material constructed using multiple sheets of paper that are impregnated with a resin and glued together. The topmost layer is a finished plastic sheet that provides the desired finish and is resistant to damage. Plastic laminates are often used for countertops and millwork.
Solid Surface
A synthetic, nonporous material that is consistent in finish through the entirety of its thickness. Solid surface is often used as an economic alternative to granite or stone. Solid surface is often used for countertops, windowsills, and benches.
Text size in architectural drawings
Usually 1/8” or 3/32” high.
Kerning
In typography, kerning is the spacing of the letters within a word to achieve a pleasant and readable text.
Plain Sawn
Quarter Sawn
Rift Sawn
The most common and least expensive way to manufacture lumber. Plain sawn lumber is cut in such a way as to keep the annular rings of the wood at an angle of 30° or less to the face of the board. Often referred as tangential grain, this cut results in wood that displays a cathedral pattern on the face of the boards.
Quarter sawn lumber produces more waste than plain sawn lumber, so it is more expensive. It is defined as wood cut at a 60–90° angle to the annular rings. Its name derives from the production process, during which logs are cut into quarters before being sliced into boards.
The most expensive and most wasteful method of lumber manufacturing. In rift sawn lumber, the annular rings are positioned between 30 and 60° to the board face, with 45° being optimum. Because cuts are generally done perpendicular to the log’s annular rings, rift sawn lumber is very dimensionally stable.
Rotary Cutting
A veneer cutting technique in which a log is mounted on a lathe and spun against a blade. The result is a “peeled” wood veneer roll that produces wide sheets with broad grain patterns.
Veneer Matching
When veneer cuts are sliced, rather than rotary cut, veneer boards are kept in the same order they were cut. This allows the faces of adjacent veneer boards to be arranged to achieve certain aesthetic qualities such as book matching, slip matching, or random matching.
