What is a raker in construction? A raker is basically an enormous kickstand for your shoring wall. These are easy to build, but they sit inside your excavation (instead of outside, as with a tieback) and make life difficult when you need to make a building around them. Tiebacks can be used on new construction or to remediate existing structures.
What are rakers used for? Rakers are usually present in two rows, projecting from both the anterior and posterior side of each gill arch. Rakers are widely varied in number, spacing, and form. By preventing food particles from exiting the spaces between the gill arches, they enable the retention of food particles in filter feeders.
What is a tieback in construction? Tiebacks are a horizontal wire or rod that reinforce retaining walls for stability. These tiebacks are anchored on one end to the wall and to a stable structure on the other. This could be a concrete deadman that’s been driven into the ground or anchored into the earth with resistance.
What is a raking shore? Raking shores – A raking shore is a structure that is used to support any walls that aren’t structurally sound within a building. Using cleats, needles, sole plates, inclined members, bracing and wall plates, they help to keep walls intact to minimize any damage to the existing building or structure.
What is a raker in construction? – Related Questions
How does a tieback work?
A tieback is a structural element installed in soil or rock to transfer applied tensile load into the ground. Grout is then pumped under pressure into the tieback anchor holes to increase soil resistance and thereby prevent tiebacks from pulling out, reducing the risk for wall destabilization.
What do gill rakers look like?
They have fleshy tentacles above their eyes and below the mouth; fan-like pectoral fins; long, separated dorsal spines; 13 dorsal spines; 10–11 dorsal soft rays; 3 anal spines; and 6–7 anal soft rays. The bodies of these fishes are covered with cycloid scales of lionfish.
What are rakers?
A raker is basically an enormous kickstand for your shoring wall. These are easy to build, but they sit inside your excavation (instead of outside, as with a tieback) and make life difficult when you need to make a building around them.
What are shoring rakers?
A raker is basically an enormous kickstand for your shoring wall. These are easy to build, but they sit inside your excavation (instead of outside, as with a tieback) and make life difficult when you need to make a building around them. Noun. raker (plural rakers) A person who uses a rake.
How is lagging installed?
Lagging consisting of wood, steel or precast concrete panels is inserted behind the front pile flanges as the excavation continues. Additionally, contact lagging or shotcrete may be applied. The lagging efficiently resists the load of the retained soil and transfers it to the piles.
What is a helical tieback?
Helical tiebacks only have two components: the plate or channel attached to the basement wall, and the screw-like shaft that is driven into the earth outside the home. The bracket is attached to the wall, and the tieback is drilled through the wall, at a downward angle into the soil.
What is the purpose of reshoring?
Reshoring is installed under floors that have been stripped of shoring. Reshoring is utilized to distribute construction loads among several levels or to grade in order that the cast floors will not become overloaded and overstressed.
Are tiebacks permanent?
Tiebacks can be used for both temporary and permanent applications. Permanent tiebacks differ from temporary tiebacks in that the critical components of the tieback tendon and anchor head are protected from corrosion. Tie back construction can be anchored into most types of soil and rock.
What is the difference between soil nail and tie back?
Soil nails are bars installed within an excavation or slope to provide reinforcement to an earth retention structure. They differ from tie backs in that they are considered passive elements and are not actively loaded in tension like a prestressed ground anchor.
What is a soldier beam?
A soldier beam is a type of support component commonly used in the construction of retaining walls. In building such a retaining wall, soldier beams—which are often also called “H” beams—are installed deep into the ground at regular intervals, usually about two to four feet apart.
What is going on at the gill filaments?
The gill filaments in fish have functions like lungs in people: it’s the organ responsible for absorbing oxygen and expelling carbon dioxide. The gills also regulate levels of mineral ions and the pH of the blood, as well as being the primary site of nitrogenous waste excretion, in the form of ammonia.
Why do fish suffocate in air?
In an air environment the gills are not able to pass the disolved gasses into atmosphere nor are they able to accept disolved gasses because there arent any disolved gasses in air. So their blood can’t rid itself of CO2 and can’t get any more oxygen into its blood, the fish suffocates.
What are Manta Ray gill rakers used for?
Then there are the plastic sacks stuffed with manta ray gill plates: feathery filaments of cartilage that the rays — majestic cousins of the shark — use to filter plankton from seawater as they swim.
What is a raker pile?
A pile driven at an inclination to the vertical to provide resistance to horizontal forces.
What are chainsaw rakers?
Depth gauges, “riders,” or “rakers,” as they are sometimes called, control the amount of wood severed by a cutter tooth. During the life of a pro saw chain, they occasionally need maintenance for top cutting performance. Each time the chain is sharpened, the top corner of the cutter tooth gets lower.
What is shoring and its types?
Shoring is lateral support for an unsafe structure that is constructed for temporary support. These support a wall laterally. When an adjacent structure is to be dismantled. When openings are to be made or enlarged in the wall.
What is shoring and its components?
Shoring is the process of temporarily supporting a building, vessel, structure, or trench with shores (props) when in danger of collapse or during repairs or alterations. Shoring comes from shore, a timber or metal prop. Shoring may be vertical, angled, or horizontal.
