REFRESHER - Building Tech and Building Utilities

Sound diffuser

the act of evenly spreading sound waves throughout a space

Best for home theaters

Sound reflector

Bouncing back of sound waves after striking from the hard surface

Sound absorber

acoustic insulation that trap sounds, an audible form of energy that travels through the air as invisible waves.

Sound barrier

acoustic barrier (sometimes also called a 'noise barrier') is designed to protect people close to the source of a noise.

Holcim

Largest local cement manufacturer

Apple sized boulders

Used for gabions

Soft Storey

It is one in which the lateral stiffness is less than 70% of the stiffness of the storey above

Weak Storey

It is one in which storey strength is less than 80% of the stiffness of the storey above

Girder

Large beam supporting smaller beam is called?

2400 kg/m3

Weight of a cubic meter concrete?

Curing period for the removal of Beam form

To resist buckling

The lally column is filled with concrete because?

Class AA

4000 PSI

Retaining walls, concrete under water

Class A

3500 PSI

Beams, slabs, footings, columns

Class B

3000 PSI

Class C

2500 PSI

Plant boxes, non critical areas

pounds per square inch

Meaning of PSI

ASTM

American Society for Testing and Materials

200 kg/sqm

Live load allocated for the ground floor shall be at least____

Class B

Fire involving flammable liquids and gasses is classified as?

20 amperes

Minimum amperaage of a circuit breaker used for convenience outlets

24

GI thickness commonly used for roofing especially in residential buildings?

300 mm

splicing of reinforcement should be at least ____ mm.

Jib door

AKA hidden or secret door

Sound intensity

defined as the amount of sound power falling on a unit area

50mm

a cantilever beam has a clear span of 3.0 meters. At least how many millimetres of camber shall be introduced?

Pacific Paint

Virtouso is a product of _______

Rammer Compactor

is a light weight compaction equipment used for compacting small areas by providing impact load to the soil.

Tensioning tendons

In pre-tensioned concrete, which happens first?

Stripping

The process of removing concrete forms from the cured concrete

aerator

a water flow constrictor attached to the tip of an indoor water faucet to limit the amount of water that flows out of it

Adz

a chisel-like stone tool used to shape wood

Coulomb

SI unit of electric charge

Ampere

unit of electric current

AKA Inductive flow or Amp

Volt

Unit of electric pressure

driving force behind current flow

Ohm

unit of resistance

William Gilbert

father of electricity and magnetism

Andre Ampere

Founded electromagnetism.

Ohm's Law

the current in a circuit equals the voltage difference divided by the resistance

the larger the current

The higher the voltage,

the lower the current

The higher the resistance,

Direct Current (DC)

Electric current that flows in only one direction

By Edison Electric Company

Alternating Current

an electric current that reverses its direction many times a second at regular intervals, typically used in power supplies.

Periodically varying in time and direction

By Nikola Tesla

Inductor

A coil of wire that creates a magnetic field when current passes through it

Capacitator

a component that stores up electricity and releases it at particular intervals. (used as parts of electrical circuits in many common electrical devices)

Generator

A machine that converts mechanical energy into electrical energy

DC Generator - only about 75% efficiency

UPS

Uninterruptible Power Supply

is a power supply that includes a battery to maintain power in the event of a power outage

Power Factor

measure of how efficiently a light source uses power

Photovoltaic film

is a thin film solar cell and is a second generation solar cell that is made by depositing one or more thin layers, or thin film of photovoltaic material on a substrate, such as glass, plastic or metal

Transformer

A device that increases or decreases the voltage of alternating current

Air Core Transformer

uses air or plastic as its core. These are light weight and are suitable for radio frequency current and mobile electronic devices

Delta connected transformer

Motor

is a machine that converts electrical energy to mechanical energy. Rated in Horespower

1 HP = 746 watts

Rectifier

an electrical device composed of one or more diodes that converts AC to DC

Converter

Changes direct current to alternating current.

(DC/AC)

Inverter

A device that converts DC to AC.

compressive strength

the force at which a material breaks under pressure

tensile strength

A measure of how much stress from pulling, or tension, a material can withstand before breaking.

shear strength

the ability to resist sliding forces on a parallel plane

GF toilet

What area does not apply waterproofing?

Underground Septic Tank

GF toilet

2F toilet

Roof deck

Marble

Romblon is known for

PVC

Which is generally regarded as the most toxic material when burned in a confined space?

200mm

Minimum thickness of exterior wall considering the plaster

3-6 months

If not used, bag of cement is considered not suitable within how many months from the date of manufacture?

Condenser

Discharges unwanted heat from refrigerant

Siding

Material, such as boards or shingles, used for surfacing the outside walls of a frame building.

Cement

Mixture of silica and lime

Rebokada

scratch coat plaster

Virtuoso Silk Touch

Virtuoso Silk Touchhttps://virtuosopaints.com

A breakthrough product that incorporates Teflon™ Surface Protector Technology, that has anti-microbial properties

brick

Which of the following has the lowest thermal conductivity?

brick

wood

steel

drywall

Hard to very hard

On a swampy area, what type of soil should the foundation rest on?

Class C

Class of concrete used for parapet walls

Elasticity

Advantage of steel from concrete?

Crippling

The sharp bending or buckling when a column is loaded heavily is called _____.

Jacking Force

In prestressed concrete, temporary force exerted by device that introduces tension into prestressing tendons.

50 mm

Size of supply pipe from distributing main to primary branch?

Plumber

In-charge of roughing-in of the sanitary pipes

incandescent

Has a filament

PABX

Private Automatic Branch Exchange

local connection as well as an outside line

LAN

(Local Area Network) A computer network limited to the immediate area usually the same building or floor of a building or a school campus.

Intercom

device for communicating between rooms

THWN

Thermoplastic, High Heat and Water Resistant Nylon coated

IMC

Intermediate Metal Conduit

10 feet long usually

XLPE

cross-linked polyethylene

Green

What is the Color Coding of Pipes for Potable Water

Right after the main distribution line connection.

Where is water meter located?

House trap

a trap connected to the lowest horizontal piping or house drain

PVC

What pipe is susceptible to UV rays?

Ceramic

What should not be used for main water pipe

Internet vs Intranet

Intranet - private

Internet - public

tee seam

Double lock seam

batten seam

Snap lock seam

Flat Seam

Condenser

Device that is used to increase the pressure of refrigerant in an airconditioning unit

Yellow

Color of pipes used for steam

Orange

Color of pipes used for Drainage and Sewage Pipe

Green

As per building code, what color is used for pipe carrying saltwater?

90 ftm/120ftm

What is the Maximum and Minimum speed of escalators?