Estimatics- State Farm (Eberls test)|Complete
With A+ Graded Answers
Trapezoid
{(Base1+Base2)/2}xHeight
Triangle
1/2(BasexHeight)
Circle
On-Center (O.C.)
is the distance from the centerline of the framing member to the center of the next framing member
from one framing member to the next framing member.
t or f? T
Roof Truss Components
top chord, bottom cord, web, and gusset.
know all these as the components.
square
base x height
Roofing Materials
3 tab comp, wood shingles or shakes.
Siding Materials- Page 11
How are non-masonry siding products, such as wood, aluminum, vinyl, steel, and vinyl clad siding
usually measured and sold?
They are usually measured by the square foot, and sold by the square(100sf) or by the piece.
know the difference between wood shake or shingle.
Top Chord
serves a roof rafter
Bottom Chord
serves as the ceiling joist
Webbing
bracing that ties top and bottom chords together
Gussets
, wood or metal plates that hold the pieces together at the joints
Span of the Truss
The span of a truss is the length of its bottom chord. This is usually the width of the building the
trusses are resting on.
O. C. of the trusses
The on center of the trusses is the distance from the centerline of the truss to the centerline of an
adjacent truss.
Length of the building
This does not include the roof overhang. It is the distance from end wall to end wall.
Formula: [length of the building(in inches)/o.c.(in inches)]+1=#of trusses #of trussesxspan of one
truss=total LFof trusses
The slope of the truss is also important. The truss prices change for different slopes.
Slope of the truss
Slope is the inches of the vertical rise in the top chord of the truss in 12 inches of horizontal run.
Parts of a roof
Flashing, Valley, Ridge, Rake Deck, Eave, Dormer
Roof Sheathing
placed over the rafters to support the roofing material
solid sheathing is used with composition shingle application because it provides a smooth base for
application.
spaced sheathing Normally found beneath wood shingles or shakes. spaced provides opening
between boards to allow wood roofs to ventilate
wood needs more ventilation
Roofing Materials
The most common roofing materials is composition shingles.
Tlock 3 tab and laminated are the most popular
comp shingles are made of fiberglass or asphalt saturated roofing material embedded with mineral
granules. The weight is per square
(100 SF) of shingles.
The most common is a 3tab square butt shingle.
Roofing Vents
allow heat and moisture to escape the attic.
3 basic types:
Ridge Vent: Normally runs most of the length of the ridge.
roof vent: ie turtle vent, normally box shaped and made of aluminum or vinyl. Several are usually
installed on a back slope.
With A+ Graded Answers
Trapezoid
{(Base1+Base2)/2}xHeight
Triangle
1/2(BasexHeight)
Circle
On-Center (O.C.)
is the distance from the centerline of the framing member to the center of the next framing member
from one framing member to the next framing member.
t or f? T
Roof Truss Components
top chord, bottom cord, web, and gusset.
know all these as the components.
square
base x height
Roofing Materials
3 tab comp, wood shingles or shakes.
Siding Materials- Page 11
How are non-masonry siding products, such as wood, aluminum, vinyl, steel, and vinyl clad siding
usually measured and sold?
They are usually measured by the square foot, and sold by the square(100sf) or by the piece.
know the difference between wood shake or shingle.
Top Chord
serves a roof rafter
Bottom Chord
serves as the ceiling joist
Webbing
bracing that ties top and bottom chords together
Gussets
, wood or metal plates that hold the pieces together at the joints
Span of the Truss
The span of a truss is the length of its bottom chord. This is usually the width of the building the
trusses are resting on.
O. C. of the trusses
The on center of the trusses is the distance from the centerline of the truss to the centerline of an
adjacent truss.
Length of the building
This does not include the roof overhang. It is the distance from end wall to end wall.
Formula: [length of the building(in inches)/o.c.(in inches)]+1=#of trusses #of trussesxspan of one
truss=total LFof trusses
The slope of the truss is also important. The truss prices change for different slopes.
Slope of the truss
Slope is the inches of the vertical rise in the top chord of the truss in 12 inches of horizontal run.
Parts of a roof
Flashing, Valley, Ridge, Rake Deck, Eave, Dormer
Roof Sheathing
placed over the rafters to support the roofing material
solid sheathing is used with composition shingle application because it provides a smooth base for
application.
spaced sheathing Normally found beneath wood shingles or shakes. spaced provides opening
between boards to allow wood roofs to ventilate
wood needs more ventilation
Roofing Materials
The most common roofing materials is composition shingles.
Tlock 3 tab and laminated are the most popular
comp shingles are made of fiberglass or asphalt saturated roofing material embedded with mineral
granules. The weight is per square
(100 SF) of shingles.
The most common is a 3tab square butt shingle.
Roofing Vents
allow heat and moisture to escape the attic.
3 basic types:
Ridge Vent: Normally runs most of the length of the ridge.
roof vent: ie turtle vent, normally box shaped and made of aluminum or vinyl. Several are usually
installed on a back slope.
