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Terms in this set (70)
Type 1 is what and commonly found where?
Fire resistive, high rise, schools, hospitals
Type 2 is called what and commonly found where?
Type 3 is called what and commonly found where?
Ordinary, strip mall
Type 4 is called what and commonly found where?
Heavy Timber, churches and barns
Type 5 is called what and commonly found where?
Wood Frame, residential
Most fire restive type of construction?
Describe the steel in type 1 construction
Must be insulated
At what temperature does steel weaken?
1000 deg F
What is the most common construction material in type 2?
Does the steel in type 2 have to be insulated?
What determines severity of fire in type 2?
Sprinklers are suggested in type 2. T/f
How many stories is type 3 usually limited to?
4 and less
What are the exterior walls made of in type 3?
What are interior walls, joists, rafters made of in type 3?
Pre-1933 masonry used what every 4-7 rows to tie together thick walls?
A king row
What does a king row tell you about a building?
It is pre 1933 unreinforced masonry
Metal beams can expand 9" per 100' when exposed to sufficient heat. T/F
What are the two fire loads found in type3 Ordinary Construction?
Construction Material and Contents
Fire resistance in Type 3 Ordinary Construction depends on what two elements?
Building Age and and Local Building Codes
What kind of roof is used primarily in Type 3 Ordinary Construction?
What are exterior walls of Type 4 Heavy Timber made of?
Non combustible material.... Masonry
What is the smallest dimension of any structural member in Type 4?
What are interior structural elements of type 4 made of?
Wood.... Also floors and roof of wood
Size of square post in type 4?
Size of beam in type 4?
Type 4 construction has high fire resistive and collapse resistive properties. T/F?
What is the most common type of residential construction in use today?
Type 5 : Wood frame in which all major components are wood or other combustible material
What is another term for conventional framing?
What are the two types of stick framing?
Balloon( eastern states)
Lightweight construction is used in buildings up to how many stories?
Older type 5 construction relied on what factor to provide strength?
Newer type 5 construction depends on what factor to provide strength(think i beams and trusses)
Sum total of members
Failure usually occurs as a whole unit
Load bearing wall that separates occupancies such as in a strip center
Non load bearing wall that divides areas
Wall that resists lateral forces
Wall rated for integrity that will contain and stop fire spread
Too full length horizontal member of a wall
Plates ( sole plate is bottom)
Individual vertical member of a wall( usually 2x4 or 2x6)
Studs that are next to a window are?
Supports over doors or windows(horizontal)
Studs above door headers and above/below window sills
* best place to breach a wall is under a window at the cripples
What is in between studs for support or fire blocking?
Blocking ( aka draft stops, consist of horizontal 2x4's
What building component is of most concern to firefighters?
Three primary designs for roofs
Pitched, curved, flat
Hip, bridge truss, flat, arch, gable, sawtooth
Pitched part of roof that support? Spacing for this part?
Rafter spaced 16-24 in.( powerpoint also says may be 12in)
What component supports the roof covering?
What are the two types of roof supporting members? What is the spacing for each?
Purlins spaced 8' apart and supporting the roof joists
Beams spaced 12'-40' apart supporting the purlins
What is a supporting member that is a type of beam used when a roof has pitch. In many buildings they have been replaced by engineered trusses.
Additional definition: Rafter- solid wood joists mounted in an incline position
How is roof pitch measured?
Rise over run
I.e. 8 pitch means 8" of rise over 12" of run
What structural member carries vertical weight and transfers load to columns, walls, or girders?
A frames structure consisting of a triangle or group of triangles
What hides fire very well and poses high collapse threat( think store front)
Facades, canopies, mansards
Some ways trusses fail?
1. Inferior components( strong as weakest member)
2. Inadequate dimensions( bad engineering)
3. Gusset plates not centered/depressed
4. Defective lumber
5. By fire or man( cuts during vent)
Spacing between joists?
Common size for plywood sheet
Lightweight truss construction depends on what two forces?
Tension and compression
Safest place to ladder a building?
A kings row of bricks is found in this type of construction.
Pre 1933 type 3 comstruction
Smallest structural components in this type are 8"x8"
Type 4 heavy timber
Wall dividing two rooms inside a house?
This roof member has pitch.
Purlins spaces this far apart?
These peices are used to join lightweight structural members.
Beams are spaces this far apart.
Bearing wall separating and supporting two adjacent buildings
Two common types of arched roofs?
Lamella and bowstring truss
Organic material used in drywall?
What system is made of tubular webbing bent at 90 degrees?
Three types of arch roofs
Bowstring, tied truss, and lamella
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