5656

FORMWORK FOR STAIRS

Arbloc combines twenty years of artisan

experience with precise 3D design to create

stairways to suit diversifi ed needs. The result

is a custom-made formwork that enables

the customer to achieve uniform concrete

casting along the entire ramp.

5757

formworks for sof f its (the underside of stairways)

Arbloc’s formworks for stairway soffi ts are made of

polystyrene foam and coated with various types of

materials. Arbloc’s cutting system enables the creation

of complex shapes like those of circular spiral stairs,

winder stairs and zig-zag design stairs. Uniform

concrete thickness is guaranteed both on the inside

and outside of the staircase and from bottom to top,

in accordance with project dimensions. The types of

coating vary according to the shape of the stairs and

the different functions: from the revolutionary Syform

resin, to smooth wood panels or planed wood strips for

fair facing fi nishes.

FORMWORK PERFORMANCE FEATURES

TYPE A STAIRS

Compression resistance of polystyrene with ≤ 3% deformation 60 kn/ m2 60 kn/ m2 60 kn/ m2

Coating Syform Syform Step : Westag 10 mm

Sizes of the parts Two- or three-steps modules Two- or three-steps modules Two- or three-steps modules

Connections with straight ramps Yes, on request Yes, on request NO

Installation instructions YES YES YES

Treadability Partly Partly YES

Reuse YES YES YES

Fair facing NO NO YES

Release agent CIRE LM33, 120 m2/kg,applied with a clothCIRE LM33, 120 m2/kg,

applied with a clothCIRE LM33, 120 m2/kg,

applied with a cloth

Coating deformation resistance 25 kg./cm2. with 3 mm bending 25 kg./cm2. with 3 mm bending 100 kg./cm 2

WINDER STEPS SPIRAL ZIG-ZAG STEPS

58

15

14

13

12

11 10

9

8

7

BBAA

78

910

1112 13

1415

16

setting up

SPIRAL STAIRS with winder steps

Formworks are produced in parts

in order to facilitate handling in

the building yard. Each element

constitutes the bottom of two or

more steps, depending on the

size of the stairs. The forms are

placed on a panelled falsework

as required. The side supports

are made up of vertical boards

placed against the polystyrene

on the sides of the ramp. Lastly,

the boards for the rises are fi xed

to the sides like in traditional

carpentry work.

59

1

2

3

4

5

6

78

9

101112

13

14

15

16

17

18

19

20

21

2223

2425 26 27 28

29

A

B

6

7

8

9

10

11

1213

14

15

16

17

18

19

A3

45

67

89

1011

1213

1415

1617

1819

2021

22

B

CD

E

Circular/elliptic type ZIG-ZAG STAIRS

setting up

Circular/elliptic type SPIRAL STAIRS

60

61

photo gallery

62

photo gallery

63

photo gallery