Grain Systems Bin Accessories PNEG-1336D - Manual (Page 14)

14 PNEG-1336D VTDL-72-8X9D - VTDL-78-8X9D Door
4. Assembly Instructions
Written Instructions for Installation of a VTDL-72-8X9D - VTDL-78-8X9D
Large Vehicle Traffic Door in 72'-78' Diameter, Externally Stiffened Tanks
Prior to door installation, tank should be fully erected and anchored. The VTDL door is to be installed in
the bottom 4 rings of the tank. Adequate provisions should be made for door installation. A list of
necessary tools and equipment is attached. Also some field fabrication and welding will be necessary.
1. The VTDL door is to be installed in the bottom 4 rings of the tank.
2. The door must be placed near an intermediate discharge well such that grain will clear away from
the door panels when tank is emptied.
3. Tank erection will be done as normal until the fifth ring from the bottom is to be installed. The fifth
ring will be installed as normal except that the orientation of the sidewall sheets should match the
sidewall layout shown
on Page 17 . At door location, install special punched, special length door
sheets at the correct position as shown on Page 17 . Use two (2) non-laminated sidewall sheets
(minimum 12 gauge) per ring without caulk to temporarily complete the ring. Use only horizontal
seam bolts to connect the filler sheets to the door sheets. Continue installing the sidewall as normal
except for installing the special door sheets and temporary sheets. These sheets are used as filler
sheets to keep the tank round until fully erected. They will be removed prior to door installation.
Also four (4) sets of stiffeners should be omitted at the door location.
(See Page 17.) Standard base
stiffener weldments will be used in these locations after doorframe is completely installed. Anchor
tank securely before installing door.
4. When tank is properly anchored, remove filler sheets. Be sure the sidewall is installed as shown
on Page 17 .
5. Review Pages 18 and 27 to identify doorframe and outer cover parts.
6. Place threshold weldments (VTDL-0381 and VTDL-0382) in door opening between sidewall sheets.
Install left and right column weldments (VTDL-0375 and VTDL-0380) as shown on Page 19 . Fasten
column weldments to sidewall sheets with 3/8" x 1-1/2" bolts (S-5060) and 3/8" nuts (S-456).
(NOTE: Bolt size may change slightly with gauge changes.) Do not tighten bolts at this time. Insert
corrugated sealing strips onto the outer edge of the sidewall sheets and the inner edge of the
sidewall attachment plates. Caulk around seal strip as well. Align edge of column base plate with
edge of threshold weldment. Also the door panel attachment strips of the columns and threshold
must be aligned.
(See Page 19 and Page 21.) The columns and threshold weldments will be
anchored with 3/4" epoxy type anchors or by field welding to tunnel girder. The column weldments
must be field welded to the threshold weldments. Do not anchor or weld until door is fully installed.
7. Install header beam weldment (VTDL-0370 for 72' and VTDL-0530 for 78') on the top of the column
weldments. The header beam weldment will slide onto the top of the columns from the inside of the
tank. Fasten loosely with 1" x 3-1/2" Grade 8 bolts (S-7622), 1" washers (S-7623) and 1" nuts
(S-240). See detail A
on Page 21 . Be sure that the sidewall attachment plate holes of the header
and column are aligned. Attach the sidewall of the fifth ring to the header seal strip with
3/8" x 1-1/2" bolts. Do not tighten bolts until door panels are installed.