Installation Guide
www.maddenmetals.com
APPENDIX A:
Determining Uniform Baluster Spacing
(3 Possible Methods):
We all approach construction in different ways, so we in-
cluded three possible methods for determining your baluster 
spacing: table of measurements, the decks.com website 
calculatorthatprovides“oncenter”measurements,anda
mathematical equation.
Method 1:  
Table of measurements and illustration of 
measurement locations:
  Rail  Approximate  Approximate  # Pickets
  Length  Outside Space  Baluster Spacing  Required
  96  3 9/16  3 5/8  20
  94  3 3/4  3 1/2  20
  94  3 3/4  3 3/4  19
  92  3 7/8  3 5/8  19
  90  2 7/8  3 5/8  19
  88  3 1/8  3 3/4  18
  86  2 1/8  3 3/4  18
  84  3 1/4  3 1/2  18
  82  2 1/2  3 3/4  17
  80  3 1/2  3 1/2  17
  78  2 1/2  3 1/2  17
  76  3 3/4  3 1/2  16
  74  2 3/4  3 1/2  16
  72  3 1/8  3 5/8  15
  70  3  3 1/2  15
  68  3 3/4  3 1/4  15
  72  3 1/8  3 5/8  15
  70  3  3 1/2  15
  68  2 7/8  3 3/8  15
  66  3 1/4  3 1/2  14
  64  3 1/16  3 3/8  14
  62  3 1/2  3 1/2  13
  60  2 1/2  3 1/2  13
  58  3 3/4  3 1/2  12
  57  2 3/4  3 1/2  12
  56  3 3/4  3 3/4  11
  54  2 3/4  3 3/4  11
  52  3  3 1/2  11
  50  3 1/8  3 3/4  10
  48  3 1/4  3 1/2  10
  46  3 3/8  3 1/4  10
  44  3 1/2  3 1/2  9
  42  3 1/2  3 1/4  9
8 9
For assistance call Madden Manufacturing
573-365-7085
Install this baluster first
if your railing section has an ODD number of balusters
Create gap first
if your railing section has an EVEN number of balusters
Outside Space Space Width Outside Space
Table A







