Steel_staircase.pdf for architecture students building construction materials.

This PPT is about steel staircase short but detailed for architecture students.

1. Steel Staircases: Design, Styles & Construction Details
Presented by:
Jaidev Meena (2023UAR1466)
Sabhya Agarwal (2023UAR1491)
Nishant Talukdar (2023UAR1854)
Subject: Building Construction and Materials IV
(22ARS209)
Semester: IV
Presented to:
Dr. Gireendra Kumar
(Assistant Professor)

2. Introduction to Steel Staircases
• Used in modern architecture for
aesthetics and structural clarity.
• Flexible, durable, and suitable for
prefabrication.
• Offers sleek appearance and
material lightness.
• Steel allows greater design
freedom.

3. Components of a Staircase
• Tread: Horizontal walking
surface
• Riser: Vertical face between
treads
• Stringer: Main structural
support along sides
• Nosing: Projecting front edge
of tread
• Landing: Rest platform
between flights
• Handrail, Balusters, Newel post

4. Design Criteria
• Load-bearing and structural
integrity
• Comfortable and safe
dimensions for all users
• Slip resistance and proper
riser/tread ratio
• Headroom clearance and
lighting
• Visual appeal and
integration with space
Load bearing Slip Resistance
Head-room Clearance
Integration with space

5. Dimensional Requirements
• Formula: 2R + T = 63 cm
• Riser: 16-18 cm (varies by
building type)
• Tread width: 25-30 cm
• Minimum width: 70-80 cm
• Headroom: At least 200 cm
• Pitch angle: 25°to 36°

6. Plan Types of Steel Staircases
• Straight Run: Simplest,
single flight
• Dog-leg: Two flights with
landing at 180°turn
• L-shaped: Two flights at
90°turn
• Spiral: Compact, rotates
around central column
• Winder: Angled steps for
space saving

7. Open Riser Steel Staircase
• Riser-less design gives floating
effect
• Allows more light through the
stairway
• Typically supported by side or
hidden stringers
• Must comply with safety codes
(child safety, gap limits)

8. Winder Steel Staircase
• Treads curve or angle
around turn
• No flat intermediate landing
• Common in tight spaces
where elegance and utility
are both priorities
• Minimum tread width at
narrowest point = 10 cm

9. Spiral Steel Staircase
• Treads spiral around a vertical
pole
• Very compact, ideal for limited
areas
• Often prefabricated and easy
to install
• Design must account for tread
depth and headroom

10. Contemporary Steel Staircase
• Featured in modern
residential and commercial
interiors
• Often wall-mounted or with
minimal visible supports
• Finishes: powder-coated,
matte black, stainless steel
• Handrails may be glass or
cables

11. Cable Rail Stair Design
• Horizontal cables replace
traditional balusters
• Provide transparency and
clean lines
• High-tension cables need
strong end posts
• Materials: stainless steel,
aluminum frames

12. Floating Steel Staircase
• No visible supports below
steps
• Steps anchored into wall or
supported by concealed steel
beams
• Highly modern and minimalist
in appearance
• Structural calculation essential
for stability

13. Materials and Finishes
• Mild steel –economical
and strong
• Stainless steel –rust-
resistant, durable
• Finishes: powder coating
(color choice), galvanization
(outdoor), brushed/mirror
polish
Powder coating
Mild Steel
Stainless Steel

14. Construction Details
• Prefabrication common for
steel stairs
• Welding or bolting used for
joints
• Fixing methods: anchor bolts,
base plates
• Anti-slip features: grooved
treads or rubber inserts

15. Drawing and Detailing
• Accurate plan
showing each tread
and riser
• Notation for
materials and finishes
• Balustrade fixing
and support details
• Must comply with
building codes and
ergonomic standards

16. Comparison with Concrete and Wood
Steel: light, sleek, modern,
prefabricated
Concrete: heavy, durable,
robust
Wood: warm, traditional,
varies with humidity
Each material has specific aesthetic and functional benefits

17. Case Study 1 –Residential
• Modern house staircase
• Open risers, floating treads
• Wall-mounted with hidden
steel brackets
• Minimalist white powder-
coated steel
• Transparent glass
balustrade
Villa Kogelhof by Paul de Ruiter Architects (Netherlands)
Steel Staircase for going to the gallery

18. Case Study 2 –Commercial
• Architecture firm office
• Black powder-coated
steel frame
• Open treads with wood
finish
• Cable railing for
openness
• Industrial and modern
design blend
BIG – Bjarke Ingels Group (Copenhagen, Denmark)
Steel Staircase

19. Conclusion
• Steel staircases allow freedom of
form and detailing
• Offer balance between function,
form, and materiality
• Ideal for compact and modern
designs
• Require careful planning and
detailing

20. References
• YouTube: https://youtu.be/mCwsBroDYis
• Ashcroft, R. Construction for Interior Designers, 1992
• Ching, F.D.K. Building Construction Illustrated, 2001
• Uploaded PDF & online resources