15.
DOG LEGGED STAIRCASE
Aim:-
To
draw the dog legged staircase using AutoCAD software
Problem
The
following are the particulars of a dog legged staircase.
Clear
size of staircase room – 6.20 m x 4.50 m
Width
of supporting walls - 230 mm
Vertical
distance between the floors - 3.80 m
Width
of flight - 1600mm
Width
of landing - 1600 mm
Number
of flights - 2
No.
of riser in each flight - 11
No.
of treads in each flight - 10
Rise
- 150 mm
Tread
- 270 mm
Thickness
of waist slab - 250 mm
Main
reinforcement 10 mm Fe 415 steel @ 120 mm c/c
Distributors
- 8mm Fe 415 steel @ 160 mm c/c
50%
of the main reinforcement are provided at the bottom of landing slab and
extended to the top of waist slab for a length of 0.151 or Ld whichever is
greater.
Anchorage
and curtailment of Reinforcement may b with standard values and any more data
required may be suitably.
Draw
the following views to a suitable scale.
1.
Plan and elevation of dog legged stair.
2.
Section of waist slab (First flight)
3.
Section of waist slab (Second flight)
4.
Details of steps.
5.
Prepare a bar bending schedule
Procedure:
1.
switch on the computer
2.
Open Auto CAD 2014
3.
Setting units
(
ii) set the unit as decimal & millimeter
4.
Setting limits
5.
Zoom – All
6.
Using Line command dog legged staircase are
drawn.
7.
using hatch command where our necessary
8.
Dotted lines are drawn using line type.
Result:
Thus
the dog legged staircase are drawn using Auto
CAD
2014 software
Download pdf & dwg File Of this Drawing.....................
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