PACKAGE : I Bid Document VOLUME : II - Public Health Engineering

circular brick wall and equally spaced for the support of 2 nos. of Rolled Steel Joists (RSJ)
and RCC Roof beams. The columns shall be constructed to support the RSJs over which
HOT crane shall be fixed for lifting the Pumps, Motors, Pipes, Valves, and Electrical
Accessories as well as to support RCC roof beams. The columns, bracings, Ties, Lintels,
Chajja, RCC roof beams and roof slab shall be of RCC concrete of not leaner than M-25
and HYSD/TMT (Fe - 415) bars.
ii) The availability of sufficient space in the pump house to locate 6 units of pump,
motor, valves, pipings, control panels and cable trays in a rational manner with easy access
and with sufficient space around each equipment for the maintenance and repairs.
iii) The availability of sufficient space between two adjoining pumps/motors.
iv) The provision of sufficient space for the control panels as per the Indian Electricity
(I.E.) Rules.
v) The provision of service bay in the station with different space to accommodate
overhauling and repairs of the largest equipment.
vi) Provision of a ramp or a loading and unloading bay so that all pipings and valves
can be laid on the lower floor permitting free movement in the upper floor.
vii) Provision of a head room and material handling tackle with adequate clearance to
lift the motor clear off the face of the coupling and also carry the motor to the service bay
without interference with any other apparatus including adequate clearance to dismantle
and lift the largest column assembly.
viii) In order to keep the operating floor free from obstruction, the pump house shall be
designed for delivery below pump floor level i.e. the pump house is to be designed with
pipe discharge gallery.
16.6 Steel approach bridge.
i) The approach steel bridge of length 40m approx. shall link up the intake tower with
the approach road. The approach bridge shall have 2 portions. The lower portion shall link
up with the discharge pipe gallery for carrying out the rising main emerging from the pump
house and the upper part shall be linked up with the pump floor level and shall be fitted
with a trolley track and other accessories for transportation and installation of pumping
machineries/equipments in the pump house. The work includes detailed design,
construction of all steel approach bridge from the hill side to Intake structure including
earthwork in all classes of soil and rock including all lift and lead, supporting pillars,
column beams etc., back filling of earth compaction wherever necessary, stone pitching as
per relevant IS codes.
DTS : Detailed Tender Specification. Page 160