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Pressed Steel Tank
Pressed Steel Tank •
Pressed Steel Tank is very popular –
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Widely used for •
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Ease in erection Facility in transport Standard and fast construction Ease in dismantling and erection Storage of cold and hot water (40 0!000"#
Types of Tank •
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Type ! $ll %anges e&ternal Type ' $ll %anges internal Type )ottom %anges internal and side %anges e&ternal Each of the tank will *e open top or closed top
Pressed Steel Tank •
Pressed Steel Tank –
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+esign in accordance with ,S -04 !../eight of the tank should *e less than m Formed *y 1oining pressed mild steel plates Si2e of the plate !3'm !3'm
Two ways of formation of the plates
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/eated uniformly in a furnace and formed in a press Pressed cold
Pressed Steel Tank 5oining of the plate
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)y means of /e&agonal6 *lack 7nished *olts –
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!'mm φ for capacity of !3'cu3m !4mm φ for capacity higher than !3'cu3m Spacing 8 -0mm
Plates are 1oined together at the %anges 40 to 90mm wide Pressed s:uare Pressed partly s:uare and partly at an angle of 40 "orners are welded and no development of crack on cooling
Pressed Steel Tank
Pressed Steel Tank –
Stay arrangement •
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$ll the four sides of the tank supported at the 1unction of two or more plates Stays connecting the side plates to the *ottom plates are called diagonal stays. These are so arranged so as not to intersect each other3 Stays connecting the two s:uare sides are called horizontal stays. These may *e omitted if the top cover acts as an e;ective tie3 Stays are made of mild steel rolled sections < usually rods3 Stays are *olted to the %anges or to the mild steel cleats attached to the tank plates3
Pressed Steel Tank The edges of the %anges should *e 7nished %ush with each other $ll the 1oints are made leak proof *y proving a material insolu*le in the li:uid to *e stored and capa*le of withstanding any temperature variations in the stored li:uid3
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Pressed Steel Tank
F=$>?E 5@,>T (P$CT=D SAB$CE+#
F=$>?E 5@,>T (SAB$CE+#
Pressed Steel Tank –
Supporting arrangement •
)y supporting the tank over rolled steel 1oists forming *eams and architraves mounted on dwarf pillars
Pressed Steel Tank –
Supporting arrangement •
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)y providing dwarf walls of *rick or concrete with footings to suit the depth of tank and nature of the ground3 +warf wall for 3m to m deep tanks should have a mild steel capping plate to provide *earing surface on the wall3
Pressed Steel Tank –
Supporting arrangement •
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)y providing two tiers of *eams6 *elow the tank and placed over suita*ly placed columns
@ther re:uirements •
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$ manhole of 40mm diameter or 40mm 40mm in si2e to *e provided in the roof Colled steel *earers or trusses are used to support the roof coverings 400mm mild steel ladder is provided where depth is more than '3m3
Pressed Steel Tank –
+esign •
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From the given capacity6 a tank of suita*le si2e with all dimensions multiple of !3'm Si2e may *e o*tained from Ta*le ! to 4 of ,S -043
