Staircase Reinforcement Details Used In Construction

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What Is a Staircase?

A staircase is defined as a set of steps from one floor to another floor or a combination of the riser and treads to make easy transportation from one floor to another floor in a building.

The staircase is one of the important components of any building structure. The stair provides easy access from one level to another level above or below.

Details staircase estimate is required before the construction of any stair and also staircase reinforcement calculations.

Various Components of Stairs

The following are the different stairs components,

Step
Tread
Riser
Going
Flight
Landing
Nosing
Line of Nosing
Winders
String or Stringers
Newel Post
Soffit
Baluster/Spindle
Balustrade
Railing
Handrail

Read More: How To Calculate Steel Quantity From Drawing

Staircase Reinforcement Calculation

Stairs Reinforcement Calculation

Staircase Estimation Sheet

The following is the staircase steel calculation excel sheet,

No.	Description	Nos.	Length	Width	Depth	Quantity	Unit
1	RCC Work (1:1.5:3) Including Centering and Shuttering but excluding Reinforcement
	i) Base on Toe Wall: H = 0.23 + 0.05 + 0.025 = 0.305 m	1	1.00	0.30	0.305	0.09	cu. m.
	ii) Waist Slab of Flight: L = √(2.75²+1.65²) = 3.21 m	2	3.21	1.00	0.305	0.96	cu. m.
	iii) Landing(Middle & First Floor) B = 1.20 + 0.15(Bearing) = 1.35 m	2	2.30	1.35	0.305	0.93	cu. m.
	iv) Steps without nosing	2×11	1.00	0.5*0.25	0.305	0.41	cu. m.
2	20 mm Cement Plaster(1:6) in Steps
	Tread	2×11	1.00	0.25		5.50	sq. m.
	Rise	2×11	1.00	0.15		3.30	sq. m.
	Ends of Steps	2×11	0.5×0.25	0.15		0.41	sq. m.
	The inner edge of the waist slab	2	3.21	0.15		0.96	sq. m.
3	2.5 cm nosing in steps in 1:3 Cement Mortar	2×12	1.00			24.00	run. m
4	2.5 cm C. C. Floor Finishing for middle and first-floor landing	2	2.30	1.20		5.52	sq. m.
5	M.S ornamental grill for railing	2	3.21	1.00		6.42	sq. m.
6	Ornamental wooden hand Rail	2	3.21			24.00	run. m

Reinforcement: Main Steel 100 dia. @ 120 mm c/c
i) Lower flight and landing:	10	4.99	@	0.62	30.94	kg
L = 3.21 + 0.3(at toe) + 1.2 + 2x9x0.010(hook) – 2×0.025(cover) = 4.99 m
No. of Bars = (1/0.12) + 1 = 9.33 =10
ii) For the upper flight, middle and first-floor landing	10	6.04	@	0.62	37.45	kg
L = 0.15+1.2+3.21+1.2+0.15+2x9x0.010 – 2×0.025 = 6.04
iii) Top bars ( 10mm dia.) in middle and First-floor landing.
L = 0.15 + 1.2 + 47 x 0.010(Ld) + 2x9x0.010 – 0.025 = 1.98 m	2×10	1.98	@	0.62	24.55	kg
				Total	92.9	kg

Read More: Estimation Of A Building With Plan

FAQs:

What is staircase reinforcement?

Staircase reinforcement refers to the process of adding steel reinforcement bars (rebars) to a concrete staircase to increase its strength and durability.

Why is reinforcement necessary for staircases?

Staircases are subject to a lot of stress and wear and tear over time, especially in high-traffic areas. Reinforcement helps to prevent cracking, bending, and other forms of damage.