A ledger is a horizontal board that is attached to the top of the the wall.
Roof firewall beam.
A firewall is a fire resistive rated wall having protected openings which restricts the spread of fire and extends continuously from the foundation to or through the roof with sufficient structural stability under fire conditions to allow collapse of construction on either side without collapse of the wall.
Section 706 5 2 states that firewalls shall extend to the outer edge of horizontal projecting elements such as balconies roof overhangs canopies marquees and other similarbuilding projections that arewithin 4 feetof the firewall.
Would expect that the beam should have a fire rating comparable to the wall it passes through.
This is important because if the beam were to burn through the fire wall would be damaged thus making it ineffective.
D horizontal membrane 52 shaft wall used in a horizontal plane.
And to extend above the roof of the tallest building.
Wood framed including dimensional lumber engineered joist and truss.
Sheet metal caps offers products for posts beams fences roofs and flashing.
Both steel columns and primary support beams trusses should be aligned vertically and horizontally with the columns and beams trusses on the opposite side of the wall and should be fireproofed.
The firewall parapet in.
E structural 53 56 column beam through penetration walls and floors and joists.
There are provisions for this in the code.
This can be achieved by wrapping the beam with gyp board or by upsizing the beam size.
This allows a building to be subdivided into smaller sections.
The ledger is needed to properly attach the perpendicular roof trusses to the top of the structure.
Roof sheathing deck or slab of a fire resistance rated floor or roof above the ceiling of the corridor shall be permitted to be protected by the use of ceiling materials as required for a 1 hour fire resistance rated floor or roof system.
One column is used on each side of the fire wall to support the roof system for that building.
The firewall parapet in photo 1 appears to be built of masonry.
Walls that are constructed of concrete block that need to be covered with a roof will require the use of a ledger.
