Table of Contents
How are trusses attached to block walls?
A ledger is a horizontal board that is attached to the top of the the wall. The ledger is needed to properly attach the perpendicular roof trusses to the top of the structure. Roof trusses attach to a ledger that is on top of a block wall.
What is used to connect the roof trusses to the walls?
Roof-to-Wall Connections are made with metal rafter ties or straps, sometimes referred to as hurricane straps. Truss Member Connections are made with metal plates that connect the individual parts of a truss to form a structural component.
Is a cinder block house good?
Concrete block houses are energy-efficient, fire-resistant, noise-reducing, pest-resistant, low-maintenance, and healthy. While Concrete houses can cost more to build than wood-frame houses; once constructed, a concrete house quickly recoups the initial costs with lower utility and upkeep costs.
How do you install floor joists on a cinder block wall?
Set a block between joists in the center of the first two joists. Use wood the same dimension as the joist and cut each block individually to the dimension between joists. Then add a block between the next two joists offset from the first one. This allows you to nail through the joist into the block.
Do roof trusses need a birdsmouth?
Manufactured trusses—because of the way they’re constructed—usually do not have birdsmouths. And, cutting a birdsmouth into a truss (because each is an engineered system) is an absolute no-no.
Can you screw into roof trusses?
It is possible to screw into your truss, but it’s risky. You would still be modifying the stress distribution on the truss, but significantly less so than cutting or drilling. However, only screw into your truss if it’s absolutely necessary, and consult the engineer who designed your attic before you do.
How do you attach truss plates?
How to Install a Truss Plate Arrange the truss members on the ground. Lay the plywood truss plates at the connection of each truss. Hammer the truss plates into place with five 6 d nails on each connecting member. Repeat the procedure for all connections on one side of the truss.
Do you need a footing for a cinder block wall?
All concrete block walls—both structural and non-structural—require a solid, poured concrete footing. Standard 8” x 8” x 16” blocks would require a 16” wide footing. Make sure the footing depth extends below the frost line, and check local building codes for construction requirements in your area.
How do you attach a cinder block foundation to the wall?
Lay your sill plate on the cinder block next to your anchor bolts and mark the board where you will need to drill the holes through the plate. Do this for the entire foundation. Then drill out the sill plate and then install the plate to the foundation.
How do you attach trusses to a wall?
Stand the first truss on the end of the wall, flush with the outside end of the wall. Center the truss side to side so that the ends overhang evenly on each side. Nail through the bottom horizontal board of the truss on an angle into the top plate on each wall to hold it in place.
Can you nail into trusses?
Trusses or rafters may be attached to walls with a minimum of three of any of the nails shown in the adjoining table as long as the uplift does not exceed 200 pounds. If you are using gun nails, you must use a minimum of a 16d gun nail. allowed provided the nailing does not damage the metal plates.
Can you nail trusses to interior walls?
Do not screw or nail the drywall to the trusses within 16 inches of an interior wall and within 8 inches of the ceilings on the exterior walls. As the rafter moves up, the drywall along the wall/ceiling intersection bends, but stays in place and doesn’t crack.
What is the disadvantages of concrete block?
Disadvantages of Concrete Blocks: If the required raw materials are not readily available then this becomes an expensive proposition. For fast & steady production of Concrete Blocks, labour needs to be experienced & skilled.
How long do cinder block houses last?
It is important to note that a house constructed using concrete blocks that use sand as aggregate will last anywhere between 50 and 100 years.
Why would you build a house with cinder blocks?
When they’re assembled and built correctly, concrete blocks are ideal for foundations and basement walls because they’re stronger than poured concrete. Concrete blocks also provide insulation against cold and heat and may reduce a home’s energy usage.
What is the difference between joists and trusses?
The joist supports the load which the floor is built to bear. A truss is used to support the roof.
Is a birdsmouth cut necessary?
A lot of force is transferred down the length of the rafter, and the seat cut on the birdsmouth transfers that force directly to the top plate. In general, while the ripped-strip installation does eliminate the need to make two cuts for the birdsmouth, it’s debatable whether there are any real labor savings.
Why is it called a birdsmouth?
It is an indentation cut into the rafter which consists of a “seat cut” (the face of which rests on the top plate) and a “heel cut” or “plumb cut” (the face of which lies parallel to the supporting wall), forming a shape resembling a bird’s mouth.
