BUILDING TECH ACC

CLASS A ORDINARY COMBUSTIBLE

Paper, Wood, Cloth, Trash, Rubber, & Plastics

CLASS B FLAMMABLE LIQUID

Oil, Grease, Gasoline, Paint, Solvents, & Tar

CLASS C ELECTRICAL EQUIPMENT

Wiring, Fuse Boxes, Circuit Breakers, Machinery, & Electrical Appliances

CLASS D COMBUSTIBLE METALS

Magnesium, Titanium, Zirconium, Sodium, Lithium, & Potassium

CLASS K/F COMBUSTIBLE COOKING

Kitchen fires involving large amount of heated grease

Indirect

90% to 100% of the light output is directed towards the ceiling and upper walls of the room

Semi-Indirect

60% to 90% of the light is directed upwards; 40% to 10% downwards

General Diffuse (Direct-Indirect)

provides approximately equal distribution of light upwards and downwards

Semi-Direct

60% to 90% of light is directed downwards; while 40% to 10% is directed upwards

Direct

90% to 100% of light output is directed downwards

TYPE M

HIGH STRENGTH MORTAR (2500 psi/17,238 kPa)

TYPE S

MEDIUM HIGH STRENGTH (1800 psi/ 12,411 kPa)

TYPE N

MEDIUM STRENGTH (750 psi/5,171 kPa)

TYPE O

LOW STRENGTH (Interior non-load bearing walls and partitions

TYPE K

VERY LOW STRENGTH (Interior non-load bearing walls permitted by NBCP)

Pre -Stressed post tensioned

Class AAA

Underwater retaining wall, shear wall and elevator core walls

Class AA

Footings, Pier, columns, girder, beams, joists, slabs

Class A

Slabs on fill and non load bearing wall or 4” CHB

Class B

Concrete plant boxes and parapet walls

Class C

Plant boxes, footpaths, walkway and lean concrete

Class D

LATEX

For concrete

ACRYLIC LATEX

For timber and concrete

ENAMEL

for timber

RED OXIDE

for steel to prevent rust

PORTLAND CEMENT

made from materials which must contain the proper proportions of lime, silica, alumina, and iron components

WHITE PORTLAND CEMENT

Same material as normal portland except color

MASONRY CEMENT

Designed to produce better mortar than that made with Portland cement or with a lime-cement combination

AIR-ENTRAINING PORTLAND CEMENT

Small amounts of this is added to the clinker and ground with it to produce air-entraining cements, effective use for resistance to severe frost.

OIL WELL CEMENT

Special Portland cement used for sealing oil wells

WATERPROOFED CEMENT

Normally produced by adding a small amount of stearate, usually calcium or aluminum to the cement clinker during the final grinding

CONCRETE

Artificial stone made by binding together particles of some inert material with a paste made of cement and water. These inert materials are the aggregate

AGGREGATE

Sand, gravel, crushed stone, cinder crushed furnace slag, burned clay, expanded vermiculite, and perlite

FINE AGGREGATE

Smaller than ¼” diameter stones

COURSE AGGREGATE

Bigger than ¼” diameter stones

SLUMP TEST

When freshly mixed concrete is checked to ensure that the specified slump is being attained consistently.

COMPRESSIVE STRENGTH

Common quality-control test of concrete, based on 7 and 28 days curing periods

CONCRETE ADDITIVES

Materials often added to the concrete or applied to the surface of freshly places concrete to produce some special result

ACCELERATORS

to speed up the initial set of concrete

RETARDERS

to delay or extend the setting of the cement paste in concrete