Untitled - CDA Guwahati

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load calculations, the requirement is essential to work out the
capacity of the plant.
'
fO The layout plan giving the orientation of the buildings
is also iequired-to hive the realistic estimation of the A'/C load.
(d) Accn fcrr plant room and AHUs is .required to be
under the air conditioning estimates whish is normally
"ou".id
missing.
(-e) Ventilation schemes are not properly designed viz a
viz flow rates are not given. As a result, the capacity of the
mechanical plant is not realistic.
(f) Energy conservation methods 919 qroposg{ to be
adoptlO but wfiile designing and planning A/C plants, this aspect
is not taken into consideration.
(g) Building estimates for air conditioned sPac9 do not
cover'Insulation -to roof/ceiling and double glazed windows to
cut down A/C load. It should be considered while working out
the cost of Bldg.
(h) While- preparing the AEs for. rePlacement of A'/C
olants. ihe system of aiiconditioning should not be changed
irntil ihere ii reduction/increase of air conditioning load.
(i) ED rates for centralized A/C plants are inclusive of
ductirig/piping involved. However cost of standby unit should
be tak?ir'as-50%o of rate given in ED for each ton'
O Authorisation of water coolers and refrigerators are
.
not w6rked out as per scales of accommodation'
(k) Many a timb, the air-conditioning requirements as given
in texi'"f tnei BPs, and A/C questionnaire/Appendices/drgs ere
at variance with each other. these must be reconciled'
4. Ext Water SuPPIY SYstem
Following details should be forwarded alongwith AEs'
(a) Frictional Head Loss calculation.
(U) Stotage capacity and staging of proposed
-res-ervoirs
based on lettei No. -84397/GenlPol/E4 (U3) dated 05 May 93'
(c) Details of existing watgl-leJglvoirs should be furnished
a* pei App* 'A' to letter\o. 84397lGenlPoVEa (U3) dated 05
May 93. ' (d) Design calculations of pumps based on the proposed
number of pumPing hours.
(e) If ^BP'reiommends a borewell, a report ot CGWB
must be accomPained with AEs.
(f) For Fire Fighting Schemes the requirement of water
I lse I
lirr I'illing should be workcd out as per scale o[ accn 1983 Tablcr
A.ll Sl No. 12 and pumping capacity be decided accordingly'
5. Sewage System
Foilowing details/info should accompany with AEs'
(a) Layo"ut plan showing existing and proposed system of
sewer'tfnes sno*ing both the GL and ILs of the existing lines
and of the new sewer lines.
(b) Capacity of septic tanks should be restricted to 300
users as per manual on sewerage and sewage Treatment'
(c) in case pr