Estimating in Building Construction

(Barré) #1
Wood 157

Estimating Steps


  1. Review the specifications and drawings for the thickness
    and spacing of studs and lumber grade.

  2. The exterior studs will be required around the perime-
    ter of the building; the perimeter used for the sills and
    plates may be used.

  3. Divide the perimeter (length of the wall) by the spacing
    of the studs to determine the number of spaces. Then
    add one to close off the last space.

  4. Add extra studs for corners, wall intersections (where
    two walls join), and wall openings.


EXAMPLE 13-11 EXTERIOR WALL STUDS


Purchase Quantity


Size Length (lf ) Pieces


2  4 8 112




(a) Corners using 2 4 studs: a corner is usually
made up of three studs (Figure 13.25). This
requires two extra studs at each corner. Estimate
the extra material required by counting the num-
ber of corners and by multiplying the number of
corners by two.
(b) Corners using 2 6 studs: a corner is usually made
up of two studs (Figure 13.26), requiring one extra
stud. Drywall clips are used to secure the drywall
panel to the studs. Some specifications and details
require that three studs be used for 2 6 corners
(similar to the 2 4 corner).

Studs148 lf0.75 spaces per foot111 spaces — Use 112 studs


Using the 148 lf perimeter

Exterior walls 24s at 16– on center FIGURE 13.26.^2 6 Corner Stud
Detail.

FIGURE 13.25.Corner Stud.

FIGURE 13.27.Wa l l I n t e r s e c t i o n
Detail (2 4s).

EXAMPLE 13-12 CORNER STUDS
Add 2 studs per corner

Purchase Quantity

Size Length (lf ) Pieces

2  48 8


(c) Wall intersections: using 2 4 studs, the wall inter-
section is made up of three studs (Figure 13.27).
This requires two extra studs at each intersection.
The extra material is estimated by counting the
number of wall intersections (on the exterior
wall) and by multiplying the number of intersec-
tions by two.

Studs (corners)4 corners2 studs per corner8 studs
Free download pdf