(a) Body assembly framing shall be electric mig welded and
reinforced at all stress points. Body when assembled to the
chassis shall be an integrated total assembly.
(b) All frame members shall be steel sections thoroughly
high pressure cleaned and treated with epoxy primer.
2. BODY FRAMING
(a) Floor framing shall be 14 gauge galvanized steel
with formed C channel crossmembers on approximately 8 inch
(b) Full body and passenger loads shall be transmitted to
the main chassis rails through outrigger supports bolted to
the web of the chassis rails with 1/2" Grade 8 bolts.
(c) Front and rear, and road and curbside walls shall be
designed using rectangular tubing, Z and C channel steel as
needed for proper structural strength.
(d) Roof framing shall be made of rectangular tubing, Z and
C channel steel and formed into hat sections designed to
transmit loads to the walls. Roof design shall depict the
curvature and lantern designs of the 1800's streetcar. The
lantern section roof shall have a minimum overhang of 4"
on the front. Lantern type roof will be fabricated with fixed
colored windows with steel basic framing insulated and covered
with minimum .040 aluminum. A replica trolley pole to be fixed
securely in a horizontal position is to be provided. No spring
loading mechanism is to be provided.
(e) Body and understructure shall be of durable
construction, adequately reinforced at all joints and points
where stress concentration may occur so that vehicle will
carry the required loads and properly withstand road shock.
(f) The underframe shall be stiff enough to prevent floor
from flexing under normal loads. Material used in body and
chassis shall be high quality, consistent with good body and
chassis building practice.
(g) The side and end framing shall be so designed and
constructed that they will carry their proportion of the
stresses imposed and absorb excessive impacts with as little
damage as is practical. Adequate reinforcements shall be
installed around the side doors in order to transfer the
stresses around these openings.
(h) Before assembly, all metal parts shall be treated with
thorough multiple stage anti-corrosion treatment and primer
(i) All nuts, bolts, clips, washers, clamps, rivets, and
like parts shall be zinc or cadmium plated, or phosphate
coated, to prevent corrosion. Where wood and wood are placed
together, both shall be coated with Tuff-Cote, Neoprene,
liquid polyurethane or other appropriate sealing compound.
(j) Body panels shall be minimum .063 inch thick aluminum
or 18 gauge hot rolled steel.
(k) All posts in body side and roof sections shall be of
durable channel or box construction securely fastened to the
underframe structure so that the entire frame shall act as one
unit without any movement at the joinings. The end posts shall
be designed to resist shear. The body should be mounted on the
frame with solid oak slats or hard rubber to absorb shock. All
exterior panels shall be welded or riveted to body frame. No
metal screws shall be permitted. Rivet spacing shall be in
accordance with the best practice of bus industry standards.
Exterior seams shall be constructed in such a manner that they
will shed water, that is the leading panel shall be lapped
over the following panel and in no case shall the sealing of
the panels be dependent on caulking alone.
(l) All light fixtures on exterior shall be fastened with
screws to frame members. Headlights must be supported by
adequate frame support or reinforced body panels.
(m) The trolley shall resist corrosion from atmospheric
conditions and road salts. It shall maintain structural
integrity and nearly maintain appearance throughout its
service life, provided it is maintained in accordance with the
procedures specified in the service manual. Materials exposed
to the elements and all joints and connections of dissimilar
metals shall be corrosion-resistant and shall be protected
from galvanic corrosion. Representative samples shall
withstand a two week salt spray test in accordance with
American Society for Testing and Materials Procedure B-117
with no visual or structural detrimental effects to normally
visible surfaces, and no significant structural degradation or
weight loss of over 1 percent for other members or components.
(n) Trolleys shall be undercoated with Lubrizol compound
corrosion prevention, or approved equal.
3. WHEELHOUSING AND STEPWELLS
(a) Front, if any, and rear wheelhousings shall be
constructed of 16 gauge stainless steel, sound deadened and
undersealed with minimum 1/8" thick undercoating to
eliminate sound transmission into the interior.
(b) Front stepwell assemblies shall be constructed of
stainless steel unless provided differently by the step lift
(a) There shall be a 14 gauge galvanized steel floor with
2" formed C channel crossmembers on approximately 8"
centers. The floor shall be secured with 3/8" Grade 8
flange head bolts.
(b) Plywood of 3/4" 5-ply minimum marine A-B grade
with all joints and edges sealed prior to installation shall
be installed on top of the steel floor.
(c) Plywood floor sections shall be secured to the
galvanized steel floor using 1/4"-20 counter-sunk self
(d) Entire floor shall be sanded so no seams are visible.
(e) The floor shall be constructed level, except
wheelhousing, and shall be constructed in such a manner that
there will be no passenger hazards, water hazards, or pockets
which would endanger passenger safety. Where the floor meets
the walls of the trolley , the surface edges shall be blended
with a circular section of radius not less than 1/4 inch, and
molding or cove shall prevent debris accumulation between the
floor and wheel housings.
(f) The floor, as assembled, including the sealer,
attachments and covering, shall be waterproof, resistant to
wet and dry rot, resistant to mold growth, and impervious to
insects. Plywood, if used, shall be no less than 3/4 inch
thick American Plywood Association, marine grade, A-B special,
and shall be installed with the A side up and with all edges
(g) Floor shall be laid in a manner as to be free from
squeaks. Plywood shall be bolted securely through cross sills,
and treated to resist decomposition.
(h) Floor covering shall be RCA Transit Floor; ribbed 5/16
inch thick on step treads and farebox area, 3/16-inch ribbed
in aisle and; 1/8-inch smooth under driver and throughout
remainder of the trolley. Yellow step nosing to be furnished.
A yellow safety line shall be installed in aisle to rear of
driver. Aluminum trim molding shall be provided for driver's
(i) All joints in floor covering shall be butt-cut joint
type, properly sealed, and ribs shall be properly aligned to
prevent gaps or edges and to facilitate cleaning. The color of
the flooring shall be determined by the Procuring Agency.
5. PANEL SECTIONS, EXTERIOR
(a) Sides shall be paneled with .063" non anodized
aluminum or 18 gauge hot rolled steel installed with
3/16" zinc coated aluminum rivets on all perimeter edges.
(b) The rear observation deck wall shall be paneled with
.100" non-anodized aluminum and thoroughly cleaned and
treated with zinc chromate primer.
(c) Roof panels shall be .050" anodized aluminum or 18
(d) The roof shall be designed in a curvature depicting the
original lantern roof designs of the late 1800 streetcars.
(e) Rear wheels to be covered with wheelwell skirts latched
at the bottom to prevent movement while the trolley is in
motion. The skirts are to be hinged at the top and include
pneumatic rods to hold the skirt up for full access to tires.
(f) All panels are to be thoroughly cleaned and treated
with zinc chromate primer and undercoated prior to
installation, and installed while undercoating is wet. A cork
tape shall be applied between the body framing and all
6. INSULATION AND UNDERCOATING
(a) The entire roof, including the lantern section, shall
be totally insulated using polyurethane foam in place thermal
insulation applied 1 1/2" nominal thickness to the
interior surface of the exterior roof panels.
(b) The entire underside of the coach body, wheelhousings,
stepwells, passenger and driver's areas shall be sealed with
an application of minimum 1/8" thick emulsion, Lubrizol
or other approved, undercoating prior to installation on the
7. PANEL SECTIONS, INTERIOR
(a) All interior side panels, including front and rear
bulkheads shall be paneled with 1/4" oak plywood panels
or aluminum sheets.
(b) Ceiling panels shall be 1/4" oak plywood.
(c) All perimeter edges of the ceiling are also to be
trimmed with oak trim moldings.
(d) Panels are to be thoroughly cleaned and coated finish
with clear polyurethane or a two part epoxy.
Skirt panels constructed of .100" non-anodized
aluminum and extending from the top of the floor to the bottom
of the coach body, shall be installed sectionally using
9. RUB RAILS
The body shall have at least one rub rail at the
Front and rear bumpers shall be designed to resemble
the drawings submitted as part of these specifications.
Bumpers shall comply with all applicable regulations, and
shall have the aesthetic appearance of authentic street car
(a) An authentic vintage, designed, framed heavy gauge
woven wire cowcatcher shall be mounted on the underneath side
of the front bumper.
(b) This cowcatcher shall have the same contour from side
to side as the bumper and wraps around the corners of both
sides of the streetcar. The cowcatcher is to be finished in
the same color as the trolley, to be approved by the customer.
(c) The cowcatcher shall be made of 12 gauge x 1-1/4"
O.D. steel tubing frame covered with 7 gauge heat treated
alloy expanded steel with a 1 1/2" clear open diamond
12. STEP TREADS &
(1) Front step assemblies shall be covered with 5/16"
ribbed black step treads with integral yellow nosings.
(2) If a step lift in installed in the front door, all step
treads shall be as provided by the manufacturer of the step
(1) Front step height from the ground (no load) shall be 15
inches maximum. Individual risers shall be 10 inches maximum
in height and in case of more than one riser, all shall be
the same height. Step tread depth to be 10 inches minimum.
(2) The stepwell shall be modular design twelve (12) gauge
stainless steel smoothly and continuously welded into OEM
structure. Stepwell shall be adequately reinforced to
prevent noticeable deflection when either step is loaded
over the center half with a 300 pound static load.
(3) Step edges shall be standard molded in yellow RCA
flooring step edge, ribbed or approved equal.
(4) Stepwell shall be completely enclosed and weather tight
when passenger door is in the closed position.