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Architecture Ch.13
Sill and Floor Construction.
| Question | Answer |
|---|---|
| Shrinkage is uniform throughout the structure when _____ framing is used. | platform |
| A(n) _______ is the lowest member of the fram of a structure. | sill |
| _________ framing was once used extensively, but in recent years has diminished in importance. | Balloon. |
| Floor joists are generally made from a common ____. | softwood. |
| Floor joists are usually spaced 12", 16" or ____ on center(OC) | 24" |
| One advantage of plateform framing is ______. | A fire-stop is automarically provided, construction is safe because the work is performed on solid surfaces. it is asy and fast to construct. |
| The sill in most residential construction is_________. | 2" X 6" |
| Platform framing utiizes a method of sill construction known as ______ construction. | box sill. |
| T-sill construction is used with ____ frraming. | balloon. |
| The actual size of a 2" X 12" floor joist is ___. | 1-12" X 11-1/4" |
| A maximum allowable deflection of ____ the span (with a normal live load) is specified for floor joist. | 1/360th |
| floor joists should be ______ under partition walls that run parallel to the joists. | doubled. |
| wood floor trusses have a built-in ____ so that the floor will be level when the load is appllied | camber |
| Wood floor trusses use ______ lumber so that a minimum of material may be used. | stress-graded. |
| Wood floor trusses are usually spaced ______ on center(OC) | 24" |
| A rule of thumb to follow in determining the necessary length of cantilevered joists is to extend the joists inside at least ______ the distance they overhang outside. | twice. |
| Most of the weight of a post and beam building is carried by the _____. | posts |
| Decking planks for the roof and floor of a post and beam stru ture range in thickness from _____ inches. | 2 to 4 |
| List the two basic types of floor framing. | Platform framing and balloon framing. |
| Identify the three structural components used in floor framing. | Plates, joists and studs. |
| List two advantages of balloon framing. | Small potential shrinkage and good vertical stability. |
| The size of floor joist required for a given situation will depend on four factors, name them! | The length of the span, the load to be supported, the species and grade of wood, and the distance the joists are space apart. |
| List two reasons why bridging is used with floor joists. | To stiffen the floor and to spread the load over a broader area. |
| List three floor materials that generally require a substantial base. | ceramic tile, slate, and stone |
| Identify the three large framing members used in post and beam construction | Post, beams, and planks. |