A B C D E F G H I J K L M
1
Only type
into Yellow
2 Spindle Calculator. Cells
3 For choice of spindle, enter manufacturer's minimum 95
4 spacing to comply with 100mm Building Regulations
5
6 Landing - horizontal
7 Length spindle size
8 1360 32.00
n Pitch fillet cut
9 length
10 8 154.7 32.0 122.7 *ILLEGAL*
11 9 139.2 32.0 107.2 *ILLEGAL*
12 10 126.5 32.0 94.5 OK
13 11 116.0 32.0 84.0 OK
14 12 107.1 32.0 75.1 Narrow
15 13 99.4 32.0 67.4 Narrow
16 14 92.8 32.0 60.8 Narrow
17 15 87.0 32.0 55.0 Narrow
18 16 81.9 32.0 49.9 Narrow
19 17 77.3 32.0 45.3 Narrow
20 18 73.3 32.0 41.3 Narrow
21 19 69.6 32.0 37.6 Narrow
22
23
24 STAIRS
25 Select a suitable sample section to determine angle
Vertical
Horiz Length along String
Angle
Sample Sample angle to Angle (Internal between newels)
26 Height Length horiz vert angle Radians
27 869 1000 41.0 49.0 0.715422
Sample
Length along spindle Height
Sample
28 full String size Length
A B C D E F G H I J
Length K L M
29 3185 32.00
30
Spindle
Horizontal angle
thickness fillet cut
31 Pitch up slope length horiz gap Gap
32 16 189.8 42.39 147.45 111.30 *ILLEGAL*
33 17 179.3 42.39 136.91 103.34 *ILLEGAL*
34 18 169.9 42.39 127.47 96.22 *ILLEGAL*
35 19 161.4 42.39 118.98 89.80 OK
36 20 153.7 42.39 111.29 84.00 OK
37 21 146.7 42.39 104.31 78.73 Narrow
38 22 140.3 42.39 97.93 73.92 Narrow
39
40 Pitch measurements from zero point for each spindle spacing, no. of spindles from 16 to 22.
41 no. 16 17 18 19 20 21 22
42 1 190 179 170 161 154 147 140
43 2 380 359 340 323 307 293 281
44 3 570 538 510 484 461 440 421
45 4 759 717 679 645 615 587 561
46 5 949 896 849 807 768 733 702 Spindle
47 6 1139 1076 1019 968 922 880 842
48 7 1329 1255 1189 1130 1076 1027 982
49 8 1519 1434 1359 1291 1229 1174 1123
50 9 1709 1614 1529 1452 1383 1320 1263
51 10 1898 1793 1699 1614 1537 1467 1403
52 11 2088 1972 1868 1775 1691 1614 1544
Fillet
53 12 2278 2152 2038 1936 1844 1760 1684
54 13 2468 2331 2208 2098 1998 1907 1824
55 14 2658 2510 2378 2259 2152 2054 1965
56 15 2848 2689 2548 2421 2305 2200 2105
57 16 3038 2869 2718 2582 2459 2347 2245
58 17 3185 3048 2888 2743 2613 2494 2385 Pitch
59 18 3185 3058 2905 2766 2641 2526 2
60 19 3185 3066 2920 2787 2666 1
61 20 3185 3074 2934 2806
A B C D E F G H I J K L M
62 21 3185 3081 2947
63 22 3185 3087
64 23 3185 check
65 Green figure is n x pitch plus one fillet
66
67 Cut fillets to size
68 Mark each pitch along the string, measuring from one datum end
69 Glue and nail each spindle and fillet and check for mark and vertical.
70 Check spindles for vertical using spirit level
71 Check spindles do not creep beyond marks plus or minus 1mm.
72
73
74
Fillet length
75
76