a) Draw a dog legged staircase.

b) Draw the plan showing flight details, mid-landings etc. Draw reinforcement details in a flight.

Given:

height = 3.2m

dimension = $3m \times 5m$

M20 Fe415

Solution:

1] Design Constant

$f_{ck} = 20 N/mm^2$

$f_y = 415 N/mm^2$

2] Design Parameter

Height = 3.2 m

Each flight = 1600 mm

$\therefore$ provide rise = 10 each 160mm

$\therefore$ treads = 9 each 250mm

$\therefore$ Plan …