Corpus sync: neutrality remakes, note hygiene, datasheet relocation, transformer-split cross-refs
---
title: Metal Canopies and Awnings
…176 unchanged lines
# Quality Assurance {toc}
−## The canopy manufacturer shall be a firm regularly engaged in the design and fabrication of metal canopy systems of the type and scale required, with a minimum of five years of documented production. {note}
+## The canopy manufacturer shall be a firm regularly engaged in the design and fabrication of metal canopy systems of the type and scale required, with a minimum of five years of documented production.
## A canopy is a structure first and a finish second; an established fabricator carries the welding qualifications, finishing line, and engineering capacity that a general metal shop typically does not. {note}
…15 unchanged lines
# Environmental and Service Conditions {toc}
−## Design loads shall be established for the specific Project site rather than assumed from a generic value. {note}
+## Design loads shall be established for the specific Project site rather than assumed from a generic value.
## Wind and snow loads on a canopy are governed by site location, exposure, and the adjacent building geometry; a canopy designed to a generic load can be grossly unconservative on an exposed or snow-drift-prone site and uneconomical elsewhere. The fields below capture the site-specific basis. {note}
…25 unchanged lines
```
−## Components and cladding (C&C) wind pressures, not the main wind force resisting system (MWFRS) pressures, shall govern the attachment of roof panels, fascia, and soffit liners. {note}
+## Components and cladding (C&C) wind pressures, not the main wind force resisting system (MWFRS) pressures, shall govern the attachment of roof panels, fascia, and soffit liners.
## C&C pressures are local and substantially higher than the overall MWFRS pressures; the panel-to-frame and trim attachments are the parts that blow off in a storm when this distinction is missed. {note}
…50 unchanged lines
## In SDC C and above, a wall-mounted canopy requires positive lateral bracing back to the building structure and a free-standing canopy requires a moment frame or diagonal bracing. {note}
−## Gravity-only connections that are adequate in low-seismic regions are not adequate where seismic lateral demand applies; the lateral path must be designed explicitly, not assumed to come along with the gravity frame. {note}
+## Gravity-only connections that are adequate in low-seismic regions are not adequate where seismic lateral demand applies; the lateral path must be designed explicitly, not assumed to come along with the gravity frame.
# Structural Framing {toc}
…3 unchanged lines
## Aluminum brackets and members subject to higher stress shall be alloy and temper 6061-T6.
−## Aluminum structural design shall use a minimum tensile yield strength of 25 ksi for 6063-T6 and 35 ksi for 6061-T6. {note}
+## Aluminum structural design shall use a minimum tensile yield strength of 25 ksi for 6063-T6 and 35 ksi for 6061-T6.
## The two aluminum tempers are not interchangeable: 6063-T6 gives the clean extruded shapes and finish that suit fascia and rails, while 6061-T6 carries the load at brackets and connections. Designing brackets to the lower 6063 yield is unconservative. {note}
…5 unchanged lines
## Steel plate, bar, and angle for connections, base plates, and brackets shall conform to ASTM A36.
−## The total-load deflection of any framing member shall not exceed L/240 of the span or 3/4 in., whichever is less. {note}
+## The total-load deflection of any framing member shall not exceed L/240 of the span or 3/4 in., whichever is less.
## L/240 with a 3/4 in. cap is the published-guide-spec default for canopy framing; the absolute cap matters on short cantilevers where L/240 alone would permit a visibly sagging edge. {note}
…3 unchanged lines
## Aluminum expands about 0.0000128 in./in./°F, so a 100 ft run swinging 100°F moves roughly 1.5 in.; without a slip joint that movement buckles the frame or tears the anchorage. {note}
−## Long, continuous aluminum walkway covers are the configuration most prone to this; the expansion joint locations and the temperature swing assumed must be shown on the shop drawings. {note}
+## Long, continuous aluminum walkway covers are the configuration most prone to this; the expansion joint locations and the temperature swing assumed must be shown on the shop drawings.
## Select the fascia (visible edge) depth.
…80 unchanged lines
## Field drilling of structural aluminum after fabrication weakens the member and voids the manufacturer's warranty, so lighting raceways must be designed in. {note}
−## Electrical provisions also require Division 26 coordination, particularly for fuel-canopy and canopy-top signage lighting; the conduit stub-up and circuiting must be agreed before the frame is built. {note}
+## Electrical provisions also require Division 26 coordination, particularly for fuel-canopy and canopy-top signage lighting; the conduit stub-up and circuiting must be agreed before the frame is built.
# Drainage {toc}
…41 unchanged lines
## Aluminum finishes shall comply with the referenced AAMA standard at the specified tier, and the finish tier shall be stated together with any color so that a lower-tier coating cannot be substituted. {note}
−## Specifying a color number alone lets the Contractor furnish an AAMA 2603 coating that chalks and fades in three to five years. The 80% case for commercial aluminum is AAMA 2604 high-performance powder coat color-matched to the adjacent storefront; coastal and aggressive sites step up to AAMA 2605 PVDF. {note}
+## Specifying a color number alone lets the Contractor furnish an AAMA 2603 coating that chalks and fades in three to five years. The most common specification for commercial aluminum is AAMA 2604 high-performance powder coat color-matched to the adjacent storefront; coastal and aggressive sites step up to AAMA 2605 PVDF. {note}
## AAMA 2604 high-performance organic coatings shall be applied to a minimum 1.2 mil dry film thickness.
…147 unchanged lines
- Zinc-rich repair coating for galvanizing
```