ALUMIN - FLAT ROOF

Staircase dimensions (staircase pitch 65۫)

C
Room Height (cm)

260

270

280

290

300

310

320

330

340

350

360

380

400

 
 Number of Steps(n)

9

9

10

11

11

11

12

12

13

13

13

14

15

A1
 Min. Opening Length (cm)

80

80

90

90

90

100

110

110

120

120

130

130

140

E
 Extension clearance (cm)

170

175

180

185

190

195

200

205

210

215

220

225

230

F
 Stair Foot Rest Point

140

145

150

155

160

165

170

175

180

185

190

195

200

A2
 Opening Width (Standard 70cm)
Independent of length and height 60-65-70-75-80-85-90-100
 
 Step Width (cm)
21-26-31-36 (48cm on request 85cm)
B1
 Frame Height
Thickness of ceiling and roof finish +15cm (Stock 70cm)
 
 Interior Trap Door Opening
Hinged on left or right side of staircase as required