Base width 1 2 to 1 3 of the height of the wall.
Concrete retaining wall thickness rule of thumb.
Retaining walls must be stable and the usual rule of thumb for small height brick retaining.
Design process includes proper assumption of structural element sizes and then check.
Minimum thickness of concrete structural elements based on aci 318 14 irc 2009 is 456 2000 and ubc 1997 is presented.
For the best results provide weep holes small openings in the wall approximately every 6 ft near the bottom of the wall to allow for drainage.
Shuttering is framed to bring the concrete in shape.
Up pressure hydrostatic pressure and it can literally move retaining walls.
The shuttering work is called by another name form work because it gives a uniform shape and smoothness for the concrete.
Vertical walls up to about 3m in height are usually built as shown in figure 1 b.
Generally it takes 10 to 15 of the cost of the total budget.
Thumb rule for shuttering work.
Mandatory rules of thumb load bearing masonary slideshare.
Thumb rule to calculate the shuttering required is 6 times the quantity of concrete or 2 4 times of plinth area.
Stability can be checked by applying the middle third rule.
This keeps the sudden restraint potential down.
Base thickness 1 8 of the height of the wall but not less than 12 inches.
Rule of thumb is 24 to 36 times the thickness gives the spacing in mm inches.
Retaining wall thickness rule of thumb.
Cantilever retaining wall segmental retaining wall with geogrid r assumed plane of rupture soil wedge soil wedge.
Wall w heavy reinforcing concrete structural element structural depth l 30 to l 40 l 40 to l 50.
These consists of a concrete or masonry wall of uniform thickness vertical wall reinforcing and transverse footing reinforcing are all designed for the lateral shear and cantilever bending movement plus the vertical weights of the wall footing and earth fills.
Keep the thickness variation to 5mm 1 4 10mm 3 8 and the subgrade as flat as possible with no abrupt change greater than 15mm 1 2 in about 1 2m 4.
Design rules of thumb in the early stages of a project we are often.
Thumb rule to calculate the shuttering area.
The thumb rule for shuttering work is listed below.
Minimum thickness of concrete slab beam column foundation and other structural members is selected to meet the design requirements as per standard codes.
It s also recommended to add gravel and a perforated drain tile behind the retaining wall before backfilling.
Rules of thumb commonly used by designers to establish the geometry of the wall include refer to diagram.
Shuttering costs 15 18 of the total construction of the building.
Retaining walls up to 1m high 2.
Retaining walls must be stable and the usual rule of thumb for small height brick retaining walls is for the height to lie between 2 and 4 times the wall thickness.