This document provides information on elevator installation procedures and types of elevators. It discusses the typical sizes of lift pits and machine rooms. It then outlines the civil work required for installing elevators, including constructing the lift pit and lift well. This involves building brick or concrete walls, installing scaffolding, adding pockets for guide rails and brackets, and marking reinforcement bars. Door frames are also to be installed according to diagrams. Proper construction is important to ensure safe and sturdy elevator installation.

1. LIFT ELEVATOR WORK PROCEDURES - TYPES,
CHECKLIST, PRECAUTIONS, MAINTENANCE
What is the working principle of elevator ?
 An elevator (lift) is a cabin which moves vertically. It is
used for transporting persons goods, up and down.
 It is a substitute for the staircase. It occupies a lesser space.
It is the most convenient way of vertical circulation in
multi-storeyed buildings.

2. TYPES OF ELEVATORS WITH CLEAR LIFT PIT AND
MACHINE ROOM SIZES
(a) Passenger elevator
(b) Freight elevator
(c) Hospital elevator
(d) Dumb elevator
(e) Capsule elevator
 Usually, passenger elevators are used in building
construction. For residential buildings, passenger elevator
of 5 to 8 persons capacity, with collapsible or swing door
shutter and single speed is used. In commercial buildings
elevators of 5 to 20 persons capacity, automatic door, with
single/double/high speed is used.
 As per the rules and regulations of the Corporations, an
elevator is a must for buildings with G+5 floors.
 A typical plan and elevation of passenger elevator is shown
in the figure.

3. (2) LIFT PIT AND MACHINE ROOM SIZES
The sizes of the lift pit and machine room varies from
manufacturer to manufacturer.
INSTALLATION PROCEDURES
Refer elevator drawings before execution of any work.
(1) CIVIL WORK FOR LIFT PIT
 v All hoist way walls should be minimum 23cm. brick or
150mm R.C.C.


4.  v Centre opening doors are recommended.

 v Depth should be 1.40m (4'6") below the lowest landing
level. The lift pit should be taken to a hard strata of ground.
If the clear depth from top of (bottom) raft upto .the lowest
landing level is more than 1.40m (4'6"), then extra depth
should be filled with plum concrete.

 v The lift pit should be completely watertight and rough
Shahabad box type water-proofing treatment should be
provided.

 v M.S. ladder should be provided for access to the lift pit.

 v Provide 40cm x 40cm x 75cm, 1:2:4, concrete block in
the lift pit at a place shown in the elevator drawing, to carry
buffer spring.
(2) CIVIL WORK FOR LIFT WELL
 v Scaffolding should be provided for lift erection in the
shaft and should be removed after the erection work is
complete. The horizontal supports of scaffolding should be
0.90m to 1.05m (3'0" to 3'6") and should exceed 1.05m
(3'6").

 v Provide pockets for the inside and backside walls, at the
locations shown by the erection agency. Grout the same
after fixing the rag bolts for guide rails. Alternately, the
guide rails can also be fixed with fasteners at these

5. locations. This is an easier but time consuming and
expensive procedure.

 v It cannot be adopted where the lift pit is more than 1.7m x
1.40m (5'6" x 4'6") size and requires bracket supports for
guide rails.

 v The fasteners or rag bolts should be provided at a
distance not exceeding 2.1m (7'0"). (Confirmation from
elevator agency is required).

 v To make the guide rails sturdy, they should be fixed on
the concrete surface and NOT-on the block/brick masonry
works. For this, the vertical distances between two R.C.C.
bracer beams should not exceed 2.1m (7'O").

 v Make pockets and grout them for rails, brackets,
indicator, boxes etc. in position.

 v During construction, provide 4 Nos. 10cm x 10cm (4" x
4") pockets in R.C.C. pardi/block/ brick masonry wall at
90cm (3'0") below the machine room bottom slab, for
fixing supports of the template.

 v C.P. teak wood template should be provided. The erection
agency will fix up the template and plumb. The door
positions can be fixed accordingly.

 v For door frames designs on the ground floor and upper
floors. Refer Figure Nos. 35.2 and 35,3. Provide door
frames in C.P. teak wood only.


6.  v In case of brick/block masonry, all R.C.C. beams (in lift
well) should be marked with red oil paint. 15cm (6") stripes
on all three sides (top and bottom of beam). This helps in
locating the R.C.C. beam position. The rag bolt fasteners
can be fixed accordingly in the R.C.C. portion.

 v The block masonry for the adjoining frames should be
done with 15cm (6") wide blocks, to prevent any chipping
later on and for avoiding offset in finished plaster/tiles.

 v The door frames and the adjoining masonry work should
be done for all floors, except for the first entry floor, i.e..,
either parking or ground floor. The door frame should be
erected after lift car erection and completion of all works of
the entrance hall/passage.

 v For the landing flooring near entrance door of the lift,
consider the sill of collapsible gate after fixing of
collapsible gate.

 v Two coats of white wash to be provided for all the walls
of the lift well.
CHECKLIST OF ELEVATOR WORKS
Read More Inormation Click Here