Grain Systems Tanks PNEG-1880 - Manual (Page 15)

PNEG-1880 105' Externally Stiffened 2 Ring Door for 2
nd
and 3
rd
Ring 15
5. Assembly Instructions
Written instructions for installation of a NCWT0435 (105' diameter bin/silo) 2 ring door package in
the 2
nd
and 3
rd
rings of an externally stiffened tank.
1. The commercial 2 ring door is installed in the 2
nd
and 3
rd
rings from the bottom.
2. The door should normally be placed in line with the conveyor. An intermediate discharge well should
be located near the wall to clear grain from the area of the access door (as with any access door).
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 support will mount at the standard externally stiffened tank anchor
bolt location.
(See Page 27.) If bolts have been pre-placed then place the stiffener support 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. Attach the stiffener support to the bottom ring of sidewall and place the external
frame with stiffeners on top of the stiffener supports.
4. The stiffeners are mounted in the frame directly under the tank stiffener columns. (See Pages 17
and 26.) 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.
Special base stiffener weldments mount above the frame stiffeners. The door stiffeners should also
bear directly onto the support stiffeners below the external frame.
5. Jamb plates (NCWT0417) 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 2-1/2" bolts
(See Page 18) for the plate to jamb connection; utilize 7/16" x 3" bolt
for stiffener to jamb to plate connection. 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.
Place as shown on the attached diagrams. The external door cover hinges will mount inside the
stiffener on the outside of the tank.
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 2" long bolts.
(See Page 18.) 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 thicknesses. Bolt head/sealing washer
should be on the outside of the tank 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.