Help on permited Rise and Go dimensions

BELOW IS A CHART SHOWING THE RECOMENDED RISE AND GOING DIMENSIONS FOR PRIVATE (DOMESTIC) STAIRCASES WHICH REQUIRE A PITCH NOT EXEEDING 42º TO COMPLY WITH CURRENT UK BUILDING REGULATIONS.

How do i use the chart ?
Well if you look in the column titled Rise you will see a list of sizes these sizes represent the height of each Riser the one i have highlighted is 200mm this is classed as a standard rise height, to the left of this in the column titled Go you can see next to 200mm rise i have highlighted the 223mm going measurent, this is the maximum going size you can use with a 200mm rise height to give you a pitch of 42 degrees. Now if you look in the area titled MAXIMUM TOTAL RISE you can see i have highlighted 2600mm under 13UP this is simply the total rise height of the staircase 13 x 200mm = 2600mm. The next step is to move on to the area titled TOTAL GO you will see that i have highlighted 2676mm in the 13UP column this measurment is the total going of the staircase (or in other words the length along the floor a straight flight of stairs would project) this is caclulated 223 x 12 = 2676. on a normal staircase you need one less going than the number of risers this is because the top riser sits against the trimmer or joist at the top of the staircase.
Important - To give you the true phisical measurment you need to add on the thickness of the top riser (9.6mm is our standard riser thickness) and the nosing size (our standard nosing size is 20mm) which overlaps the bottom riser. So on your 2676mm you need to add another 30mm(29.6) to give you 2706mm total.

 

METRIC SIZES IN mms
GO
RISE
MAXIMUM TOTAL RISE
TOTAL GO
(FROM THE FACE OF THE TOP RISER TO THE FACE OF THE BOTTEM RISER)
12 UP
13 UP
14 UP
15 UP
16 UP
 
12 UP
13 UP
14 UP
15 UP
16 UP
220
198
2376
2574
2772
2970
3168
2420
2640
2860
3080
3300
223
200
2400
2600
2800
3000
3200
2453
2676
2899
3122
3345
226
203
2436
2639
2842
3045
3248
2486
2712
2938
3164
3390
229
206
2472
2678
2884
3090
3296
2519
2748
2977
3206
3435
232
208
2496
2704
2912
3120
3328
2552
2784
3016
3248
3480
235
211
2532
2743
2954
3165
3376
2585
2820
3055
3290
3525
238
214
2568
2782
2996
3210
3424
2618
2856
3094
3332
3570
241
216
2592
2808
3024
3240
3456
2651
2892
3133
3374
3615
244
219
2628
2847
3066
3285
3504
2684
2928
3172
3416
3660
247
220
2640
2860
3080
3300
3520
2717
2964
3211
3458
3705

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