Technology and Materials Flashcards
Engineering instrument used to measure vertical and horizontal angles
Theodolite
Picket fence material
Plank
Post that supports / maintain wooden post
Sister post
material not suitable for tennis court
Grass
Types of welding
Fusion and pressure welding
Lighting fixtures that turn on/off based on the ambient of light
Photoelectric control (photocell)
% of shade covered by tree canopy
Canopy cover
Triangular UV treated shade fabric
Shade sail
Mountable curbs primarily cater
Vehicles
Process used in steel production
Bessemer process
Minimum archery range
50 yards / 45.7 mts
Standard depth for wet play area
300mm
Used to drill holes for posts, commonly attached to tractors
Post Hole Auger
Purpose of Allen Key Machine Screw
Against theft
Instrument used to measure angle of slope
(In)clinometer
Joint that resembles back/ rear of animal
Dovetail joint
Retaining wall failure
Sliding, overturning
Lamp used for roadways;
Produces yellow color
Sodium-vapor
Good characteristics of incandescent lamp
Good color rendition
Lifespan of flourescent lamp
10,000-15,000 hrs
Metal alloys of bronze
Copper and tin
Greenish layer that naturally forms on copper when exposed to air
Patina
Medium used to outline tennis court borders and other markings
Paint
Added to ponds/ lakes in golf courses to enhance visual quality of water
Blue dye
Filter used in koi ponds
Biofilter
Material NOT advisable for posts reaching up to 5 mts
Plastic
Most expensive material for wood deck
Real wood
(Not composite, reconstituted or plastic)
Tempered glass characteristic
Shatters into small pieces
Low concrete post
Bollard
Metal used to draw intricate patterns on fences
Wrought iron
Multi-purpose growing medium made out of coconut husk
Coco peat
Bamboo/ tiki torch
Sulo torch
Unsuitable material not advisable near seaside
Uncoated steel
(Not wood, galvanized steel)
Edge restraint commonly used in the PH
Concrete
material manufactured from thin layers (plies) of wood veneer that are glued together
Plywood
Integral concrete characteristic
Color lasts longer
Location of pump to pool
As near as possible
Measure of luminous flux (quantity of light energy emitted per second in all directions)
Lumens
Unit of light INTENSITY
Candela (Candlepower CP)
Measure of Luminance
Footcandle (1 sq ft) / Lux (1 sqm)
Types of fusion welding
Gas Flame
Electric-arc
- Weakest method of joining metals
- Uses solders (alloys of tin and lead)
Soldering
Type of soldering that uses higher temperatures and stronger + higher melting alloys
Brazing
- Alloy of copper (Cu) and tin (Sn)
- Rizal Monument and other statues
Bronze
- Alloy of copper (Cu) and zinc (Zn)
- Reacts with other metals
Brass
Used as a protective coating (galvanizing)
Zinc
Impure form of iron; commercial form in which iron is first prepared
Crude / Pig Iron
Galvanizing method
- chemical treatment with electrochemical reaction
- allows steel to bond with zinc
Hot-dip Galvanizing
Gneiss
Marble
Quartzite
Slate
Metamorphic
Shale
Coal
Limestone
Sandstone
Sedimentary
Granite
Quartz
Obsidian
Pumice
Obsidian
Igneous
Water content of the soil when the remainder of water has been removed by gravity
Field Capacity
The minimum amount of water in the soil that the plant requires not to wilt; exceeding will kill the plant
Permanent wilting point
Refers to the amount of clay particles in a soil sample
Colloidal Content
Moisture content at which a soil changes from a liquid to a plastic state
Liquid Limit (LL)
Moisture content at which a fine-grained soil can no longer be remolded without cracking (crumble)
Plastic Limit (PL)
Water content at which further loss of moisture will not cause a decrease in volume
Shrinkage Limit
The study of the origin and formation of soil (from bedrock to horizons)
Pedogenesis
Combination of geosynthetic components; has a
- core (void space for water)
- geotextile filter (prevents soil from entering voids)
Geocomposites
3D prefabricated polymeric system; voids are filled for stabilization
Geocells
Impermeable polymeric sheets used for pond lining and waterproofing
Geomembranes
Woven or nonwoven fabric used for reinforcement, separation, filtration, and in-plane drainage (permeable to water and gases)
Geotextiles
- Main horizonal support (beam) that supports smaller beams
- Carries the floor joist and flooring
Girder (Suleras)
- Recently formed soils that lack well-developed horizons
- Recently deposited sediments that will develop into another soil type
Entisol
Heavy clay soils that expand and contract due to moisture
Vertisol
Added to slow setting time of concrete
Gypsum
Added to improve concrete plasticity and workability; faster curing time
Lime
