Grain Systems Tanks PNEG-1086 - Manual (Page 15)

PNEG-1086 42'-60' Externally Stiffened 2 Ring Door 15
5. Assembly Instructions
Written instructions for installation of a NCWT0108 (42'-60' diameter bin/silo) 2 ring door package
in a externally stiffened tank.
1. The commercial 2 ring door is installed in the bottom 2 rings.
2. The door should normally be placed in line with the conveyor. A intermediate discharge well should
be located near the wall to clear grain from the area of the access door (as with any access door).
The door must be positioned directly below the vertical seam as shown
in Figure 6A on Page 17 .
3. The door has an inside frame weldment and an external frame weldment/assembly. If the tank has
not been erected the internal frame weldment should be placed inside the tank before erection. If the
tank has been erected or erection has begun, it will be necessary to remove sidewall and stiffeners
in the door placement area to place the inside frame weldment.
The external door frame stiffener will mount at the standard externally stiffened tank anchor bolt
location.
(See Page 24.) If bolts have been pre-placed then place the frame and stiffeners over the
pre-placed bolts. If drill in anchors are to be used it is recommended the holes be pre-drilled at the
proper location.
4. The stiffeners are mounted in the frame directly under the tank stiffener columns. (See Page 25.)
For the case of the externally stiffened tank these stiffeners will be mounted in the external frame.
The frame should have the stiffeners already in place with two (2) bolts to hold them in location.
These bolts will need to be removed to install the door, however the stiffeners may be left in position
in the frame. The stiffeners will mount in the frame such that the tank stiffener will bear directly above
it. Should the stiffeners not be so placed, they should be placed in that location. Standard base
stiffener weldments mount above the frame stiffeners.
5. Left and right hand jamb plates (NCWT0091L and NCWT0091R) are provided for attachment of the
sidewall sheets to the door frame. The jamb plate will mount between the internal and external frame.
Place the jamb plate between the internal and external frame and bolt the frame, plate and stiffener
together utilizing 7/16" diameter bolts. Utilize 7/16" x 1-1/2" bolts (S-3885) for the plate to jamb
connection utilize 7/16" x 2" bolt for stiffener to jamb to plate connection.
(See Page 26.) At the jamb
plate to frame connection install the bolts with the head and sealing washer on the outside of the tank.
At the stiffener to frame to plate connection install the bolts with the head and sealing washer on the
inside of the tank.
The internal door panel hinges will mount utilizing stiffener to frame bolts (on the inside of the tank).
Place an additional sealing washer under the hinge at those bolt locations before bolting it in place.
Shim as necessary with 7/16" flat washers to obtain proper alignment with door panel hinges.
(See Page 27.)
6. The sidewall sheets to the left and right of the door will mount to the outside of the jamb plate.
Two (2) special short sidewall sheets (44") and two (2) standard length (119"), special punched
sheets are provided. Attach the sidewall to the jamb plate utilizing 3/8" diameter x 1-1/2" long bolts.
(See Page 26.) Corrugated sealing strip, CWT-0053 is provided. This may be mounted at the outer
edge and inner edge of the jamb plate to sidewall interface. Caulk around the seal strip as well. A
flat washer may be required under the nut for certain gauge thickness.
Bolt head/sealing washer should be on the outside of the tanks for this connection.
NOTE: For tanks that utilize 13 gauge or thinner material 3/8" x 1" bolts may be used to attach the
sidewall to the jamb plate.