TM 55-2200-001-12
Change 1
REMARKS
1. (TTX) These cars are equipped with one hitch for the transportation of one trailer up to 43 feet in length. The underframe is cast
steel with a wooden floor. Conventional draft gears are used for end-of-car cushioning. Cars marked F30CG have a "Starred Load
Limit."
2. (TTX) The underframe on the majority of 75 foot cars is an all welded steel structure with a small percentage of cars (F39B)
having a cast steel underframe. The welded steel and cast steel underframes have a fish belly center sill. Class F39, F39A, and
F39C have a wood deck with an exposed steel center sill top cover plate extending the full length of the car. Class F39B has an all
wood deck. Conventional friction draft gears are used for end-of-car cushioning. The Lightweight varies from 76,000 to 82,000
pounds depending upon the car used. The Load Limit varies from 128,000 pounds to 133,700 pounds accordingly. These cars are
equipped with two hitches for the transportation of two trailers up to 35 feet in length.
3. (TTX ) These cars are equipped with two hitches for the transportation of two trailers up to 40 feet in length. The underframe is an
all welded steel structure with a fish belly center sill. Two types of floors are used, an all steel floor and a combination wood and steel
floor. A conventional draft gear is used for end-of-car cushioning. The side sills are utilized as outside trailer guide rails, and extend
8 inches above the deck of the car. The side sills are also stress carrying members of the underframe. Classes F85D, F85E, and
F85F are equipped with auxiliary guide rails which when removed, increase the width between the guide rails to 8 feet 6 inches. All
cars have (*)'Starred Load Limit except F85M which has a Load Limit of 128,000 lbs.
4. (TTX) Standard deck cars in trailer service equipped with two hitches for the transportation of two trailers, one up to 45 feet in
length and one up to 40 feet in length. These cars consist of two basically different types of flat cars, a standard deck and a low deck
car. The underframe of these cars is an all welded steel structure with a fish belly center sill and all steel floor. Eighty-nine feet cars
in trailer service (cars equipped with hitches use conventional draft gears for end-of-car cushioning. Eighty-nine feet cars equipped
with auto racks, or equipped for saddleback service, military service or autoframe service use hydraulic draft gears for end-of-car
cushioning. Hitches and container supports are cushioned when used on cars having friction type gears. F9OHS and F9OPHS are
equipped with hydraulic sliding sills. The letter "H" in class denotes car equipped with hydraulic draft gears.
5. (ATTX) These cars are equipped with continuous tiedown loops at the center of the car and tiedown rails at the sides, for the
transportation of small vehicles such as army trucks, jeeps, mail trucks, and other general commodities. The underframe on the
majority of 75 foot cars is an all welded steel structure with a small percentage of cars (F39B) having a cast steel underframe. The
welded steel and cast steel underframes have a fish belly center sill. Class F39, F39A, and F39C have a wood deck with an exposed
steel center pill top cover plate extending the full length of the car. Class F39B has an all wood deck. Conventional friction draft
gears are used for end-of-car cushioning.
6. (BTTX) Standard or low deck cars equipped with bilevel auto racks. 89-foot cars equipped with auto racks or equipped for
saddleback service, military service or autoframe service use hydraulic draft gears for end-of-car cushioning. Hitches and container
supports are cushioned when used on cars having a friction type gear. F89OHS and F89PHS classes are equipped with hydraulic
sliding sills. These cars consist basically of two different types of flatcars, a standard deck and a low deck car. The underframe of
these cars is an all welded steel structure with a fish belly center sill and all steel floor.
7. (CTTX) These cars are equipped with special devices for the transportation of two 40 foot containers. The underframe is an all
welded steel structure with a fish belly center sill. Two types of floor are used, an all steel floor and a combination wood and steel
floor. A conventional draft gear is used for end-of-car cushioning. The side sills are utilized as outside trailer guide rails, which
extend 8 inches above the deck of the car. The side sills are also stress carrying members of the underframe. Note, all cars listed in
tables have (*) Starred Load Limit except the F85M which has a Load Limit of 128,000 pounds.
8. (ETTX) Standard or low deck car equipped with elevating trilevel auto racks. The underframe is an all welded steel structure with
a fish belly center sill and all steel floor. Eighty-nine foot cars equipped with auto racks use hydraulic draft gears for end-of-car
cushioning.
9. (FTTX) Auto Frame Cars. Same basic car as described in Remark number 20, but supplied with special tiedown equipment for
the transportation of automobile frames. The underframe is all welded steel structure with a fish belly center sill. Wood deck is
treated oak. Hydraulic draft gears are used for end-of-car cushioning.
10. (FTTX) Standard flush deck car equipped with special tiedown equipment for transportation of automobile frames. Eighty-nine
foot cars used for saddleback service, military service or autoframe service use Hydraulic draft gears for end-of-car cushioning. The
underframe of this car is an all welded steel structure with a fish belly center sill and all steel floor.
11. (FTTX) 89 foot 4 inch flush deck car equipped with special tiedown equipment for the transportation of automobile frames. The
underframe is an all welded steel structure with an all welded steel floor. Cars equipped for autoframe service use hydraulic draft
gears for end-of-car cushioning. This car provides a clear loading area 9 feet 0 inch wide by 89 feet 4 inches long.
12. (GTTX) 85 foot and 89 foot cars which are equipped with two hitches for the transportation of two trailers up to 40 feet in length.
These cars have a center sill which extends 8 inches above the deck. Attached to the center sill on each side is a cushioned rub rail
which acts as an inner guide rail. The underframe consists of a fish belly center sill with cross members. No side sills are used on
the car. The floor is a steel box section, one section on each side of the center sill with longitudinal floor stringers enclosed.
13. (GTTX) Same as Remark number 12.
14. (HTTX) This car is the same basic car as described in Remark number 20, except that this car is equipped with special heavy
duty tiedown anchors and chain assemblies contained in channels along the sides of the car and adjacent to the center sill on each
side. Each outboard channel contains nine tiedown anchors while each inboard channel contains ten tiedown anchors. The movable
and retractable tiedown anchors are equipped with chain assemblies having a load binder, heavy duty compression unit, adjustable
grab hook and 1/2 inch alloy chain with a working load limit of 11,250 lbs (proof test 27,500 lbs). This type of car, HTTX, replaces
type TTHX as the 60 foot heavy duty tiedown car.
15. (ITTX) Standard deck cars equipped with special foldaway pedestals and sixty-two movable ratchet type winches with 3/8 inch
alloy chains having a working load limit of 6,600 lbs (proof test 18,000 lbs), contained in channels. These cars are used in the
transportation of trailer tractors loaded "saddleback" style. The underframe is an all welded steel structure with a fish belly center sill
and all steel floor. Hydraulic draft gears are used for end-of-car cushioning and hydraulic sliding sills.
16. (ITTX) Eighty-nine feet 4 inches flush deck cars equipped with special adjustable and foldaway pedestals 2 feet 0 inch high and 2
feet 0 inch long Tiedown equipment consists of sixty-two movable ratchet type winches with 3/8 inch x 10 feet long alloy chains
having a working load of 6,600 lbs (proof test 18,000 lbs) contained in channels. These cars are used in the transportation of trailer
tractors loaded “saddleback" style.
17. (JTTX) These cars consist of two basically different types of flat cars. The underframes of these cars are an all welded steel
structure with
G-5
