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BT 2 > Roofing (wood Frame) > Flashcards

Roofing (wood Frame) Flashcards

0
Q

Thickness of GI roofing are measured in terms of what

A

Gauge

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1
Q

The covering of a building that serves as a protective covering from the weather

A

Roof

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2
Q

The standard commercial width of corruated GI sheet

A

32” or 0.80

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3
Q

The standard length of corrugated GI sheet ranges from

A

(5’ to 12’) 1.50 to 3.60

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4
Q

Plain GI sheet commercial standard size

A

36” x 8’ or 0.90 x 2.40

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5
Q

Two kinds of lapping in laying corrugated GI sheet roofing

A
  1. Side lapping

2. End lapping

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6
Q

A shallow channel of metal, wood or concrete set immediate below and along the eaves of a building to catch and carry off rainwater from the roof

A

Gutter

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7
Q

Slope of gutter for effective drainage

A

5mm per meter

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8
Q

Two type of gutter

A
  1. Concealed gutter

2. Exposed gutter

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9
Q

It conveys the water from the gutter down to the storm drain

A

Downspouts

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10
Q

The lower edge of a sloping roof; that part of a roof of a building which projects beyond the wall

A

Eaves

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11
Q

To prevent water penetration and or provide water drainage especially between a roof and wall

A

Flashing

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12
Q

A metal or tile covering which caps the ridge of a roof

A

Ridge roll

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13
Q

A piece of timber or steel laid horizontally on the principal rafters of a roof to support the common rafters on which the roof covering is laid

A

Purlin

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14
Q

A fastener used to secure a purlin to its support

A

Purlin cheat

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15
Q

One of a series of inclined members to which the roof covering is fixed

A

Rafters

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16
Q

A structure composed of a combination of members, usually in some triangular arrangement so as yo constitute a rigid framework

A

Truss

17
Q

In a truss, any member which joins the top and bottom chords

A

Web member

18
Q

It is a horizontal structural member whose prime function is to carry the load of the roof

A

Roof beam

19
Q

It is the reinforcing device to resist shear and diagonal tension stresses in a beam

A

Stirrups

20
Q

In a truss, it is a vertical member extending from the apex of the inclined rafters to the tie beam between the rafters at their lower end

A

King post

21
Q

The ties between rafters on opposite sides of the roof

A

Collar plate

22
Q

A device such as metal rod wire or strap, for fixing one object to another as specially formed metal connectors used to fasten together timbers masonry, trusses etc

A

Anchorage

23
Q

A principal member of a truss which extends from one end to the other, primarily to resist bending

A

Chord

24
Q

It is a board that is nailed horizontally to the ends of roof rafters; sometimes supports a gutter

A

Fascia board

25
Q

It requires plain GI straps GI rivets and GI washers

A

Riveting

26
Q

This is the simplest and most economical method where GI roofing are anchored to the purlin by the use of roof nails and a pair of GI and washer

A

Nailing

27
Q

14 Types of roof

A
  1. Shed or lean-to roof
  2. Gable or pith roof
  3. Saw tooth roof
  4. Double gable roof
  5. Hip roof
  6. Hip and valley roof
  7. Pyramid roof
  8. Gambrel roof
  9. Ogee roof
  10. Mansard roof
  11. French or concave mansard roof
  12. Dome
  13. Conical roof or sphire
  14. Butterfly roof
28
Q

It is a two shed roof where the slopes meet at the center of the building

A

Butterfly roof

29
Q

It is a steep roof of circular section that tapers uniformly from the circular base to a central point

A

Conical roof or sphire

30
Q

It is a hemispherical form of roof usually used on observatories

A

Dome

31
Q

Its is a modification of the mansard roof where the sides are concave

A

French or concave mansard roof

32
Q

The two sides of the roof slopes steeply from each side of the building towards the center forming a flat deck on top

A

Mansard roof

33
Q

It is a pyramid form having steep sides sloping to the center

A

Ogee roof

34
Q

It is considered as the simplest form of roof consisting of one single slope

A

Shed or lean-to roof

35
Q

It is the most common type and economical form of the roof made of triangular sections consisting of to slopes meeting at the center of the ridge forming a gable

A

Gable or pitch roof

36
Q

It is commonly used on factories where extra light is required through the window on the vertical side

A

Saw tooth

37
Q

It is a modification of a gable or a hip and valley roof

A

Double gable roof

38
Q

It is a roof having four straight sides all sloping towards the center of the building terminating at the ridge

A

Hip roof

39
Q

It is a combination of a hip roof and n intersecting gable roof forming a t or l shaped building

A

Hip and valley roof

40
Q

It is a modification of the hip roof wherein the four straight sides are sloping towards the center terminating at a point

A

Pyramid roof

41
Q

It is a modification of the gable roof with each side having two slopes

A

Gambrel roof

BT 2 (4 decks)

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