PNEG-1393
54'-60' Diameter 36-37 Rings Externally Stiffened 2 Ring Door
15
5. Assembly Instructions
Written instructions for installation of a NCWT0215 (54'-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. 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).
The door must be positioned directly below the vertical seam as shown
.
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.
4. The door frame stiffeners are mounted in the external door frame directly under the sidewall stiffener
columns.
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 external door frame stiffener will be located in the standard externally stiffened tank anchor bolt
location.
Anchor bolts should not be placed in this location. If these anchor bolts are
pre-installed, they will need to be cut off. After all final adjustments to the door have been made, the
anchor bolts should be drilled in place through the internal frame.
GSI recommends
Hilti 1" x 12" H.A.S. threaded anchor and 1" x 8-1/4" H.V. U. adhesive capsules. (For seismic or
special situation tanks, consult GSI Engineering.) The external door frame stiffener must be field
welded to secure it to the frame.
5. Left and right hand jamb plates (NCWT0216L and NCWT0216R) 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 for the plate to jamb connection
utilize 7/16" x 2" bolt for jamb to plate to hinge connection.
At the jamb plate to frame
connection install the bolts with the head and sealing washer on the outside 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
hinges as shown
. 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 1-1/2" long bolts.
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.
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.
The horizontal seam of the sidewall sheet above the door header will bolt to the jamb plate where it
extends above the door frame. The sidewall will be on the exterior of the plate. Install base angle
(B-6753) at the area the plate does not extend above. Utilize silicon caulk as necessary to seal
this location.
Standard base stiffeners will mount directly above the external door frame stiffener. Shim as
necessary for firm support and bolt the stiffeners together using a 3/4" bolt and washer.