BDC- Thermal, Moisture et al

Question 1

what are the major CSI divisions?

Answer 1

Division 01 — General Requirements
Facility Construction Subgroup
Division 02 — Existing Conditions
Division 03 — Concrete
Division 04 — Masonry
Division 05 — Metals
Division 06 — Wood, Plastics, and Composites
Division 07 — Thermal and Moisture Protection
Division 08 — Openings
Division 09 — Finishes
Division 10 — Specialties
Division 11 — Equipment
Division 12 — Furnishings
Division 13 — Special Construction
Division 14 — Conveying Equipment

Division 21 — Fire Suppression
Division 22 — Plumbing
Division 23 — Heating Ventilating and Air Conditioning

Division 25 — Integrated Automation
Division 26 — Electrical
Division 27 — Communications
Division 28 — Electronic Safety and Security

Question 2

what is dampproofing?

Answer 2

its the control of moisture that is not under hydrostatic pressure. They typically describe the protection of slabs and foundations below grade that are subject to continuous exposure to water.

Question 3

what is admixture dampproofing?

Answer 3

various types of admixtures can be added to concrete to make it water repellent. These include materials such as salts & fatty acids, mineral oil and powder iron. They may reduce the strength of concrtee.

Question 4

what is bituminous coating? (damproofing)

Answer 4

Asphalt base or coal-tar pitch materials applied to the exterior side of the foundation wall. They may be brushed or sprayed on, can be applied either hot or cold. They do not seal cracks that may develop after application.

Question 5

what are cementitious coatings?

Answer 5

one or two coats of portland cement mortar can be troweled over the surface of masonry or concrete foundation walls. M

Question 6

what are membranes (dampproofing)?

Answer 6

These methods include built-up layers of hot or cold applied asphalt felts or membranes of butyl, polyvinyl chloride, or other synthetic materials. However, membranes are usually used for waterproofing walls subject to hydrostatic pressure, and their cost & difficulty of application is usually not warranted for simple dampproofing.

Question 7

what are plastics (dampproofing)?

Answer 7

Silicon & polyurethane coatings are available, but they are usually reserve for above-grade damp proofing.

Question 8

what is waterproofing?

Answer 8

Waterproofing is the control of moisture & water that is subject to hydrostatic pressure. This may include protecting below the water table.

Question 9

what is loose fill insulation?

Answer 9

its produced as shreds, granules or nodules and can be poured or blown into spaces to be insulated. Its used in places where insulation of other types is challenging and in tight spaces. eg cells of CMU, attics, plumbing chases etc

Question 10

what is rock wool insulation?

Answer 10

its a fibrous material formed by blowing molten basalt rock under pressure. S

Question 11

What is cellulose insulation?

Answer 11

typically shredded wastepaper or wood fibers. TYP Contains 75% recycled content, and requires less energy to produce.

Question 12

What is fiberglass loose fill insulation?

Answer 12

its made by spinning molten glass into fibers, typ contains ~20 to 30% recycled content.

Question 13

what is perlite insulation?

Answer 13

volcanic rock expanded by heating

Question 14

what is vermicultie insulation?

Answer 14

hydrated laminar magnesium-aluminum-ironsilicate.

Question 15

what type of CFCs were phased out as part of the clean air act?

Answer 15

HCFCs

Question 16

what is Polyisocyanurate (or Polyiso)?

Answer 16

its a closed cell foam insulation that contains low-conductivity gas in the cells. Most Polyiso’s made today are actually a mix of rigid polyurethane and polyisocyanurate.

Question 17

What is Polyurethane insulation?

Answer 17

a closed cell foam made to a density of 2 lbs/ ft. Most are made without the use of HCFCs They cost more but have a higher r value / inch.

Question 18

What is XEPS insulation (Extruded expanded polystyrene)

Answer 18

a closed cell insulation manufactured by mixing polystyrene beads containing liquid pentane & a blowing agent. The mix is heated to expand the beads, which are inected into a form.

Question 19

what is molded expanded polystyrene (MEPS)?

Answer 19

also closed cell and manufactured by mixing unexpanded polystyrene beads containing liquid pentane and a blowing agent.

Question 20

what is sprayed foam insulation?

Answer 20

typically uses polyurethane or polyicynene as the base material. The components of the foam are mixed at the spray head, at which time they react immediately & expand to produce low density foam that adhears to the surfaced sprayed onto. it has a good R value

Question 21

what side of insulation is the radiate barrier applied?

Answer 21

it has to face the heated side of the insulation.

Question 22

what is emissivity?

Answer 22

a measure of how much energy is emitted.

Question 23

what is a vapor retarder or barrier?

Answer 23

its a material used to slow the transmission of water vapor between spaces. they are palced on the warm side of the wall

Question 24

in roofing estimating what is a square?

Answer 24

100 sq ft.

Question 25

what is the min slope for a metal roof?

Answer 25

3/12

Question 26

what is a built up roof?

Answer 26

consists of several layers of overlapping layers of bituminous saturated roofing felts cemented together with roofing cement. the bituminous material can be either asphalt or coal tar pitch.

Question 27

what is an example of a thermoplastic material roof?

Answer 27

single ply, EPDM or Ethylene Propylene diene monomer. manufactured at a thickness of .045 to .06.

Question 28

what is PVC roofing?

Answer 28

a thermoplastic roofing manufactured in thicknesses of .048in to .06 in. PVC membranes have excellent resistance to weathering

Question 29

what is a Thermoplastic Polyelfin (TPO) roof?

Answer 29

a singly ply base with a blend of polypropylene and ethyene propylene. It can be installed loose & covered w/ ballast. This roof is mechanically attached and used in areas with high wind uplift is a concern.

Question 30

what is a liquid applied roof?

Answer 30

including butyl, neoprene, hypalon and other products. They are applied in liquid form in one or two coats by brushing or spraying & are air-cured to form an elastic, waterproof surface. Liquid applied membranes are also used below grade waterproofing, foundation walls.