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PART I, GENERAL REQUIREMENTS AND COVENANTS
BUS STOP SHELTER WITH BENCH
ITEM
555
CITY OF ABILENE
ITEM 555
BUS STOP SHELTER WITH BENCH
555.1 DESCRIPTION.
This Item shall govern the design, fabrication, delivery, and installation of bus stop passenger shelters
in conformance with the details in the Plans.
555.2 GENERAL.
The bus stop shelters shall consist of wall frame, roof and glazing panels, all required accessories, and
hardware for installation. The design shall permit integration of a bench, transit map and bus schedule
panels. Shelters are to be vandal resistant, maintenance free and designed to provide dependable passenger
shelters to endure and withstand all weather conditions in Abilene, Texas, including 75 mph winds.
Shelters shall be Model #2002, as manufactured by Columbia Equipment Company, Inc. or Brasco
International, Inc., or approved equal.
555.3 DESIGN.
(1) Shelters shall be designed by registered Architects and engineered by licensed Engineers.
(2) Each shelter shall be free standing three (3) sided (open in front), aluminum framed structure with roof
assembly. The structure shall be designed for mounting to a concrete slab or footing at the four (4)
corners.
(3) The sides and back shall have a clear space of 6 to 12 between the bottom frame member and the
foundation.
(4) Shelters shall be designed such that the structure is stable with all windows, roof, fascia, and ground
fastenings removed.
(5) Dimensions shall be as follows: 9 minimum overall length (outside fascia to outside fascia) by 5'
minimum overall width (outside fascia to outside fascia), by 7' high to underside of fascia.
(6) The shelter shall have a minimum clear inside dimension of 8' in length by 4' in width.
555.4 CONSTRUCTION MATERIALS.
(1) All structural frame and window frame members shall be extruded aluminum of 6063-T52 (dark
bronze) alloy.
(2) Structural framing shall be one-piece seamless 2-1/2 x 2-1/2 hollow aluminum tubes of .125
minimum thickness. SNAP-TOGETHER OR TWO-PIECE CHANNELS WILL NOT BE ACCEPTED.
(3) Mullions shall be one-piece seamless 1-1/2 x 2-1/2 x .125 members.
(4) Window frames shall be separate extruded aluminum members with integral self-alignment lips and
corner key slots. FRAMELESS GLAZING IN RECESSED POCKETS WILL NOT BE ACCEPTED.
SNAP-ON GLAZING STOPS OR STOREFRONT GLAZING DETAILS WILL NOT BE ACCEPTED.

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BUS STOP SHELTER WITH BENCH
(5) Facias shall be one-piece seamless extruded aluminum sections of .125 thickness with integral gutter,
raindrip molding, weep holes - cantilevered beyond face of glazing panels below double corner key slots
and alignment lip.
(6) Shelters shall be prefabricated in four (4) or five (5) sections, completely glazed (so that total erection
time at site requires only about one (1) hour).
(7) Skylight domed roofs shall be one-piece completely prefabricated units with domes mounted into
facias and caulked and gasketed before shipping.
(8) All joints shall be neat and clean and all edges shall be free of burrs.
555.5 STANDARD.
(1) All aluminum shall conform to the standards of the Aluminum Association, 750 3rd Avenue, New
York, New York.
(2) Standards to be complied with in the design and construction of shelters include the American
Institute of Steel Construction (AISC), Aluminum Association, American Society of Testing Materials
(ASTM), Underwriters Laboratory (UL), etc. as applicable to the aluminum, steel, plastics and other parts.
(3) Shelter construction shall conform to construction standards of the American Society of Civil
Engineers (ASCE).
(4) Shelters must be designed to withstand dead loads of 40 pfs min. and wind load over 75 mph.
555.6 STRUCTURAL FRAMING.
(1) All framing, both vertical and horizontal, shall be the same size.
(2) Minimum size shall be 2-1/2x2-1/2x1/8 structural tubes. Mullions shall be concealed.
(3) Connections shall be by means of 1/4 thick minimum extruded aluminum channels, 2-1/4x2-
1/4x2-1/4 high with tapered edges, or 1-1/4x2-1/4x2-1/4 high with tapered edges.
(4) Each main structural joint shall be fastened with two (2) high strength stainless steel bolts of 1/4
diameter. SELF-TAPPING CONNECTORS WILL NOT BE ACCEPTED.
(5) Base connections shall be adjustable to varying sidewalk or mounting conditions. Base of shelter
columns shall be designed to accept both internal and external base flanges. Where external flanges are
used, they shall have same anodized or duranodic finish as Shelter. PAINTED FLANGES WILL NOT
BE ACCEPTED WITH ANODIZED OR DURANODIC FINISHED SHELTERS.
(6) Shelter posts shall contain internal drainage weep holes to prevent condensation build-up.
555.7 WINDOW FRAMING.
(1) Windows shall be factory installed in window frame, which shall be factory installed into the separate
structural frame.
(2) Window frames shall have mitered corners and shall be connected internally by extruded aluminum
corner keys or screw bosses with concealed stainless steel screws for positive tamper-proof fastening.
(3) Window frames shall be affixed to Shelter frame with 3/16 shallow head aluminum rivets, at
approximately 13 O.C. Rivets shall be on inside of shelter. OUTSIDE RIVETS WILL NOT BE

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BUS STOP SHELTER WITH BENCH
ITEM
555
ACCEPTABLE. Rivets shall grip both surfaces being joined continuously for a full 360 degrees.
RIVETS FASTENED INTO SLOTS WILL NOT BE PERMITTED.
(4) Window frames shall be independent so those windows with gasketing (mounted in frames) can be
removed or installed as a complete unit without affecting any other member of the shelter. FIN TUBE,
SNAP-ON OR SCREW-ON GLAZING BEADS ARE NOT ACCEPTABLE.
(5) Where polycarbonate windows are used, specially deep frames with 1/2 to 3/4 edge engagement
shall be used to prevent windows from being popped out. In this case, specially deep continuous PVC
dry set splines shall be used for gasketing.
(6) Design of window framing shall be such that only authorized personnel may remove window units.
555.8 FINISHES.
(1) All aluminum framing shall have a dark bronze anodized finish to conform to Aluminum Association
Standards for Anodically Coated Aluminum Alloys for Architectural Applications.
(2) Facias shall have a dark bronze finish.
555.9 GLAZING.
(1) All glazing shall be 1/4 lightly tinted, bronze vandal-resistant polycarbonate sheet.
(2) Gasketing around windows shall be continuous specially extruded polyvinyl chloride (PVC) dry set
splines.
(3) Glazing shall be fully gasketed and framed in independent, interchangeable factory assembly units for
ease of maintenance and repair. Maximum glazing panel widths shall be 2'-8.
555.10 ROOF.
(1) Roof shall be one-piece molded acrylic skylight dome. Thickness of acrylic shall be 1/4 nominal.
(2) Color shall be translucent bronze tint. Roof shall be completely enclosed - both top and bottom - by
continuous, compressed gaskets of expanded EPT rubber or neoprene SCE41, with adhesive backing and
shall be leak and condensation proof. All roof seams and joints between dome and aluminum shall be
continuously sealed with premium construction grade silicone such as Dow #780 or GE #1200.
(3) Roof dome shall be factory mounted into fascia/gutter assembly. Roof dome shall be removable
without removing fascia. ROOF DOME SHALL NOT BE HELD IN PLACE WITH SNAP-IN
MEMBERS.
555.11 ROOF FASCIA.
(1) Fascia member shall be 6 high minimum. Facias shall be one-piece continuous extruded members
with mitered corners; connection in facias shall be with two (2) aluminum angle corner keys and four (4)
threaded stainless steel Allenhead set screws at each corner. FACIA MEMBERS SHALL HAVE NO
EXPOSED FASTENINGS OF ANY SORT.
(2) Joints shall be mechanically fastened, NOT WELDED, to facilitate future maintenance. Fascia
members shall have integral self-aligning lips for perfect alignment.

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BUS STOP SHELTER WITH BENCH
(3) Weep holes in fascia shall be located on a custom basis to prevent drainage from crossing through
shelter on sidewalk. Drainage shall take place through cantilevered weep holes to an external reveal inside
the fascia but outside the Shelter, to prevent streaking on the exterior surface of the fascia.
(4) For safety, top edge of fascia shall be rounded. Roof assembly shall be attached to roof beam with
1/4 minimum diameter stainless steel gasketed roof bolts approximately 13 o.c.
555.12 INSTALLATION HARDWARE.
All installation hardware and ground anchors shall be supplied with shelter.
555.13 BENCH.
(1) One (1) 5' aluminum bench shall be included with each shelter.
(2) Benches shall have aluminum seat and backrest on an aluminum frame design to be mounted as a
freestanding unit on a concrete slab or footing.
(3) All exposed edges and surfaces shall be smooth and free from burrs and sharp projections.
(4) All mounting and anchor hardware shall be included.
555.14 ROUTE MAP DISPLAY.
(1) One (1) interior display panel for information display shall be included in each shelter.
(2) The display panel shall be tamper-proof and vandal-resistant.
(3) It shall be extruded aluminum with a polycarbonate cover mounted in an extruded aluminum frame.
The aluminum shall have a bronze anodized