MID TERM KEY
#PC’s
Thickness”
Width “
Length’
Bd. Ft.
Cost/M Bd.Ft.
Cost
Girders
Part
29
4
10
12’
1160 BF
1048M
$1215.68
Posts (4x6)
9
6
4
4
6
6
8’ (72)
10’(60)
144 BF
120BF
856M
$123.26
$102.72
Posts (4x4)
15
10
4
4
4
4
8’ (120)
10’ (100)
117.33 BF
133.33 BF
790M
$126.40
105.33
Decking
232
2
6
16’
3712BF
688M
$2553.86
Mud Sill
6
2
6
16’
96BF
520M
49.92
Mud Sill
6
2
6
12’
72 BF
520M
$37.44
Width/Dia.’
Height’
Length’
Cubic Footage
Cubic
Yards
Cost/Yard
Cost
1.5
.6667
165.33’
165.33 CF
6.1236 CY
$95.00/Yd
$581.75
Wall
.6667’
3.8333
165.33’
422.5184 CF
15.6488 CY
$95.00/Yd.
$1486.64
Piers
1.6667
.6667
# of piers=
47
CF/Pier =
1.4544
CF/Pier
68.3568
2.5317CY
$95.00/Yd.
$240.51
Part
Footing
Total Cost:
$6415.46
0r
$6373.85
MID TERM KEY
1. Complete the spreadsheet on the accompanying page, based on the attached drawing.
a)
b)
c)
d)
For girders, find a common length that will work for each run and that will break on a pier.
For posts, calculate the length needed, combine and round up so that you can order a common length that is at least 8’-0” in length.
For the mud sill, find a common length that will work on all sides of the building.
For the decking, use 5” as the actual width of the material and find a common length, just make sure it is a multiple of 4 so that it will
land on a girder.
For wall and footing volume calculations, use the centerline measurement Hint: Calculate the perimeter measurement and subtract four
corners times the width of the wall. Note: The foundation wall is 8” wide
e) Use unrounded numbers from your calculations to determine price, that way our answers should all match.
2. You are asked to calculate the quantity of lap siding needed for a building.
Assumptions:
a)
b)
c)
d)
e)
Building measures 55’-0”’ x 66’-0” with 8’-0” wall height
The building has triangular gables on each end measuring 55’-0” x 9’-6”
The siding is 8”(nominal) x ¾”cedar bevel siding (actual dim. = 7 ¼”)
The lap will measure 1”
The cost per board foot is 1440M
What is the total area to be covered? 2458 SF
How many linear feet will it take to cover the building (window and door opening to serve as waste factor)
Note: Round up to nearest whole foot 4,720 LF
How many board feet does that represent? 3,146.67 BF
What is the cost $4531.00
3. You are asked to build a second story balcony guardrail. The newel posts are installed and the inside measurement from newel to newel is
63 5/8” You are using 1 5/8” balusters with space of no more than 4”. How many do you need and what is the equal spacing distance?
Number = 11
Spacing = 3 13/16”