Chap 5 Basic Building Construction Flashcards
Key factor in fire performance of wood. Wood also carries its load by this.
Mass
2nd most important point to remember in wood frame construction is what?
Connection method used to hold structural members together
An older type of wood frame construction in which the wall studs extend vertically from the basement of a structure to the roof without and fire stops
Balloon Frame
A type of construction in which each floor is built as a box. The framing in each level is set on a sill plate and runs the height of one floor.
Platform frame.
Framing method that uses post (vertical members) and beams ( horizontal members) to create a load bearing frame connected by rigid points. Used in barns and farm buildings and in some commercial buildings.
Post and Beam
A framing method that uses heavier beams that are spaced much farther apart than the traditional 16 inches. It is used in modern construction.
Plank and Beam
Do not put anyone on top of, underneath, or at the sidewalls of this type of roof.
Bowstring truss roof
This type of construction is ofter times referred to as Mill Construction
Heavy timber
Heavy timber uses large wooden columns larger than and can be used for buildings up to how tall?
Larger than 8x8 and buildings up to eight stories tall/
The hazards with Heavy timber structures?
Walls and ceilings are typically unfinished and lack any real fire protection.
Connection points are an important factor for heavy timber
This type of construction is composed of masonry load bearing walls with wood joisted floors and a wood roof?
Ordinary Construction
Building materials for load bearing walls in Ordinary Construction?
Brick, concrete block, or both
Joist with a 30 degree cut on them? What are they and where are they found?
Fire cuts
Sits in pocket on exterior wall to, collapse downward and saves exterior wall in case of fire.
Used to spread a load between two or more structural members. Indicated by star or other decorative device on the exterior.
Spreader
This type of spreader is a rod or cable that runs parallel to the joist and ties the walls together to increase the stability of either or both walls.
Type 1 spreader
This type of spreader uses Tensile members, rod or cable, that run perpendicular to the joists and tie the fire three or four floor joists to the wall. These members may be part of an original design of heavy timber building, or they may be added to a building to support a weak wall.
Type 2 spreader
This type of construction employs building materials that will not add fuel to the fire but can suffer from the effects. Exposed steel trusses and iron beams can elongate and fail during fires.
Type 2 Non combustible
Most common method for building the roof structure on non combustible construction?
Metal decking build up of different materials.
Metal deck>insulation material>then alt layers of felt and tar>light gravel
When walking on flat roofs, where should you walk and why?
Along the side next to the wall, roof is better supported and less likely to collapse under your weight
Rule of thumb for the expansion of steel.
1 inch for every 10 feet at approximately 800f
This type of construction has the most inherent fire safety factors associated with both the building material and the building techniques.
Type 1 fire-resistive
Top and bottom members of truss
Chords
Inside members of truss
Web
Trusses are tied together with connecting members called?
Ties
Connection points inside web, Not talking about gussets
Panel Points
Most dangerous type of truss
Bowstring truss
Most common truss for roof construction?
Peaked roof truss
How far apart are trusses placed? How are they held in place?
16 to 24 inch on center.
Plywood roof material.
Besides toe nailing, way that trusses are connected to wall?
Metal clips, hurricane ties
This type of truss is used for both roofs and floors. Can be either wood or steel. Top chords and bottom chords run parallel to each other.
Parallel Chord Truss
The void space and potential problem with parallel chord truss.
Interstitial space.
These have helped the building industry span larger open distances with load bearing ability at a lower cost.
Under fire conditions, they can begin to delaminate, reducing strength and mass of the beam.
Laminated beams and engineered I-beams
