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Y2: Carpenter Math > Yead 2 ALL MATH > Flashcards

Yead 2 ALL MATH Flashcards

1
Q

Material enclosed BOTH ends?

A

+1

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2
Q

Material enclosed ONE end?

A

No change

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3
Q

Material enclosed NEITHER end?

A

-1

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4
Q

Perimeter x 3 plates

A

Exterior lineal plate material

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5
Q

Opening width + 150
X2 windows
X1 doors

A

Filler/rough sills

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6
Q

Interior wall total length x 3 plates
+ 8% for waste and interior lintels

A

Interior wall lineal material

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7
Q

Perimeter/o.c. Spacing
Round up spaces

A

Exterior regular studs

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8
Q

Wall length/o.c.
+1 starter

A

Plumbing wall regular studs

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9
Q

Junctions + ____
Corners + ____
Openings +____
Posts +____

A

2
2
2
4

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10
Q

8% of regular exterior studs

A

EXTRA studs

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11
Q

Opening width + 300mm
X2 plies

A

Lintel length

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12
Q

Perimeter x exterior wall height
- openings over 3m2

A

Exterior wall sheathing

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13
Q

Is there a difference in calculating for drop beams vs flush beams?

A

Flush beams require hangers to be estimated

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14
Q

Building length/o.c.
X 2 sides when supported by beam
+2 when ceiling opening > two joist spaces

A

Regular ceiling joists

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15
Q

Beam length + 300mm bearing
X # of plies

A

Beam length required

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16
Q

Beam length/o.c.
X # of sides with hangers

A

Joist hangers

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17
Q

Are regular ceiling joists for gables and hips the same?

A

Yes. # of us same, but end ones are “pushed back” and laminated with second one in

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18
Q

Building width/o.c.
- 3 (we don’t need due to open end + 2 get in way of hip rafters)

A

Stub joists

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19
Q

Stub ceiling joists ALSO =

A

Stub joist hangers

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20
Q

First step calculating roof stuff before ANYTHING

A

Hip or gable?

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21
Q

Building length + 2 overhangs

A

GABLE roof RIDGE

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22
Q

Sqrt((rise/run)^2 + 1

A

SGF90

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23
Q

Sqrt((rise/run)^2 + 2)

A

SGF45

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24
Q

Building width/2

A

Common rafter run

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25
Q

(Width/2) + OH
X SGF90

A

Common rafter TLL

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26
Q

Width/2
X SGF90

A

Common rafter LL

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27
Q

OH x 2 = length
Common rafter/o.c. = # of per barge
X 4 barges

A

Gable lookouts

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28
Q

Length/o.c. + 1 close off
+ 4 barges

A

of Gable common rafters

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29
Q

Do gable ends have fascia?

A

No. They are calculated as common rafters

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30
Q

Length + 2OH
X 2 sides

A

Rough fascia

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31
Q

Width/2
/o.c. Don’t add or subtract
X 2 gable ends
(Reusing cutoff for other half of same gable face)

A

Gable regular studs

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32
Q

Width/3 + 300mm

A

Collar tie length

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33
Q

Do we “close off”collar ties at building ends?

A

No. Same as ceiling joists. Don’t need collar ties on both end walls. Subtract 1 for open ends of building

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34
Q

X/(width/2)
= rise/run

A

Comparison to find centre gable stud length

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35
Q

Roof rise = 1 side of 45deg triangle
Pythagoras for hypotenuse
X 2 gable ends

A

Gavel END bracing

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36
Q

Centre gable stud length x common rafter run
X 2 gable ends

A

Gable sheathing

37
Q

Length - width

A

Hip roof ridge length

38
Q

Common run x SGF45

A

Hip rafter LL

39
Q

Common run + OH
X SGF45

A

Hip rafter TLL

40
Q

Common run + OH
X SGF45
X4 rafters

A

Total Length of hip rafters needed for hip roof

41
Q

Length/o.c. +1
X 2 sides
+ 2 piba rafters

A

of Hip roof Common rafters

42
Q

Even though hip roof ends are “open” why do we add 1?

A

Hip roof needs even spacing at hips.
Almost always has odd spacing along the ridge, so need to account for an odd space that must be filled.

43
Q

Length +2OH
Width +2OH
X 2 sides each

A

Hip roof rough fascia

44
Q

Minor run
+ projection
+ overhang

A

Minor gable roof ridge

45
Q

Minor hip roof projection =

A

Minor hip ridge

46
Q

Projection width/2

A

Minor common run

47
Q

Projection offset from main building =

A

Hip valley cripple run

48
Q

Main perimeter
+ projection x 2 sides

A

Intersecting roof rough fascia
**account for gable ends not being fascia

49
Q

Ridge length/o.c.
+ 1 to close off

A

of Collar ties for hip roofs

50
Q

Length + 2OH x width + 2OH (area)
X SGF90

A

Roof sheathing

51
Q

Perimeter/drip edge length

A

Drip edge material needed

52
Q

WHERE DO WE FIND EAVES on a gable roof?

A

2 long sides, NOT gable ends

53
Q

Where do we find EAVES on HIP roofs?

A

All 4 sides

54
Q

Length/o.c.
-1 not closed off
+ 2 gable end trusses

A

Regular trusses
+ gable end trusses

55
Q

Length x 4

A

Truss lateral bracing

56
Q

Exterior wall area
-openings

A

Exterior insulation

57
Q

Length x width (area)

A

Ceiling insulation/drywall

58
Q

Interior wall length
X wall height
X 2 sides

A

Interior drywall

59
Q

Perimeter x wall height

A

Exterior wall area

60
Q

2x (
(Width + 2OH
X SGF90)
+
(Length + 2OH)

A

Gable roof fascia perimeter

61
Q

Fascia perimeter x OH

A

Soffit material

62
Q

Fascia perimeter ALSO =

A

Finished fascia material

63
Q

Length/o.c.
+ 1 close off
Width/o.c.
+ 1 close off
**repeat on similar sides
# of x OH

A

Eaves lookout material
**DO NOT calculate wave lookouts for gable ends; separate calculation

64
Q
  • 3m^2?
A

Opening areas > or = to subtract from gross wall area (perimeter x wall height)

65
Q

Width/2 + OH
X
Roof rise

A

Gable end area for siding

66
Q

NBC minimum wood siding lap =

A

1”
25mm

67
Q

Wood siding width - lap = max exposure
Wall height/maximum exposure = # or whole rows
Wall height/whole rows =

A

Actual exposure of wood siding

68
Q

Wall area/actual exposure

A

of lineal material for wood siding

69
Q

100mm =

A

Overlap for sheathing membrane
**account for area a roll covers…NOT full roll, must subtract 100mm from width

70
Q

Walls @ HORIZONTAL soffit
Underneath window openings

A

Where we find undersill

71
Q

Opening PERIMETERS (including doors)
Gable end @ rake

A

All potential J-trim locations

72
Q

Perimeter of building ALSO =

(Finish material support)

A

Starter strip

73
Q

Combine all opening widths

A

Flashing

74
Q

DTLF/FO

A

Unit rise/unit run

75
Q

Total rise/desired unit rise

A

Actual # of risers

76
Q

Total rise/actual # of risers

A

Actual unit rise

77
Q

Total risers - 1

A

Total runs

78
Q

455 - unit rise

A

Unit run

79
Q

Unit rise/x

7/11

A

Unit run

80
Q

FO + HF + HA

A

RO

81
Q

DTLF - floor thickness

A

Head room

82
Q

Wall —> wall
- top landing
- bottom landing

A

Total run of limited run stairs

83
Q

Partial FO + OS

A

FO of straight stair with landing

84
Q

Landing size - unit run

A

Landing Offset

85
Q

Round up partial finished opening on stairs with landing?

A

No

86
Q

Round up landing finished opening on L-shaped stair?

A

Yes

87
Q

DTLF - Landing down

A

Landing drop
**”B” side of L-shaped stair

88
Q

LFO =

A

Compare landing drop to unit rise/unit run

89
Q

Unit rise and unit run hypotenuse used for?

A

Hypotenuse x # of RISERS = backing stringer length
Hypotenuse x # of RUNS = notched stringer length

Y2: Carpenter Math (1 decks)

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