P
ocket
R
efeRence
G
uide
— 18
BALuSTER SPACING
You are going to install a handrail at the
top of a balcony. Your total span is 4000
mm and you would like the space between
the balusters to be about 100 mm. If each
baluster is 40 mm wide, what is the exact
spacing between each baluster?
KEYSTROKE
dISplAY
1. Divide Length by spacing:
oo
0.
4000M*
4000.
MM
140M=
*
28.57143
(29 balusters)
* Desired spacing plus baluster width
(100 mm plus 40 m)
2. Find total space ‘occupied’ by the balusters
by multiplying the width of each baluster by
the rounded number of balusters:
40Mx
40.
MM
29=
1160.
MM
3. Find total space between all balusters:
4000M-
4000.
MM
1160M=
2840.
MM
4. Find actual baluster spacing by dividing
total space between all balusters by the
number of spaces between the balusters
(number of balusters plus one equals 30):
2840M*
2840.
MM
30=
94.66667
MM
NuMBER OF STuDS
Find the number of 400 mm On-center studs
required for a wall measuring 7600 mm
in length:
KEYSTROKE
dISplAY
1. Divide Length by spacing:
oo
0.
7600M*
7600.
MM
400M=
19.
2. Add one for the end:
+1=
20.
Note:
Also applies to trusses and joists.
CIRCLE AREA AND CIRCuMFERENCE
Find the area and circumference of a circle
with a diameter of 625 mm:
KEYSTROKE
dISplAY
oo
0.
625MC
dIA 625.
MM
C
AREA 306796.
16
SQ MM
C
CIRC 1963.495
MM
PRG4050E-A.indd 18
5/24/2013 2:14:07 PM
Summary of Contents for Construction Master 5 4050
Page 1: ...CONSTRUCTION MASTER 5 Pocket Reference Guide Metric Edition FAST ACCURATE RELIABLE Model 4050 ...
Page 36: ...AREA AND VOLUME FORMULAS Area Formulas ...
Page 37: ...Pocket Reference Guide 34 AS Volume Formulas ...
Page 44: ...Designed in the United States of America PRG4050E A Printed in China ...
