In the given truss bridge parallelogram ABCD and PQRS are congruent if AB 24 feet what is PQ?
on a building, it apparently tells firement the building has a (R)egular roof as opposed to a truss roof. Truss roofs tend to colapse in fires, so firemen do not get on top of it.
The triangle is the strongest geometric shape, as it holds its shape and has a base which is very strong. The triangle is common in all sorts of building supports and trusses. If all three sides of a triangle are made of rigid material, the angles are fixed and cannot get larger or smaller without breaking at the joints, unlike a rectangle, for example, which can turn into a parallelogram and even collapse totally. If you take a rectangle and place one diagonal piece from corner to corner, you can make that strong and stable, too, but doing that makes two triangles.
Structures that rely on triangulation for their strength include bridges, trusses, and certain types of roofs. Triangular shapes distribute weight evenly and provide stability, making them ideal for supporting heavy loads. Common examples are the truss bridges, which use triangular units to efficiently transfer forces, and geodesic domes, which utilize triangular frameworks for strength and lightness. This design principle helps prevent deformation and enhances overall structural integrity.
Technically Yes, but you'll need to check with your building inspector because there are codes regarding structure that vary from place to place, and the inspector isn't going to pass something based on my say so.The old rule of thumb was 1 inch for 1 foot, so a 12 foot span would require a 2 x 12.A 4 x 8 isn't equal to a 2 X 16, or even 2 2 X 8's, but it should do if the load isn't too great.I'm guessing you want to go with 8" stock because you've got some headroom issues. You'd be better off structurally with an LVL (Laminated Veneer Lumber) or OSB (Oriented strand Beam) or a truss, but these are kind of pricey.If you get in trouble see if they'll let you go with them on 12" centers.
it is a hybrid between an arch bridge and truss bridge. so it is classified as an arch and truss
Glenville Truss Bridge was created in 1885.
a truss
trussesWarren truss bridge
the truss
A truss is a diagonal brace which provides structural support for a bridge span by extending between a vertical member and the bridge span.
The type of bridges are: -truss bridge -arch bridge (truss arch bridge) -suspension bridge (suspension truss bridge) -cantilever bridge
the first Truss bridge was built by Palmer in 1811 in Philidelphia
you can check this out link below- its about Truss Bridges
Wilson Pratt Truss Bridge was created in 1904.
Ouaquaga Lenticular Truss Bridge was created in 1888.
Bollman Truss Railroad Bridge was created in 1869.