How do I calculate how much retaining wall I need?
To calculate the volume of retaining wall we need to calculate the volume of retaining wall. Here I have divided the retaining wall into two parts, part A is the base slab and part B is the stem of retaining wall. So Volume of retaining wall = Volume of base slab + Volume of stem.
How do I calculate the thickness of a retaining wall?
Base width = 1/2 to 1/3 of the height of the wall. Base thickness = 1/8 of the height of the wall but not less than 12 inches. Stem thickness = 6 inches + ΒΌ inch for each foot of wall height.
How do you make a cantilever retaining wall?
Design of cantilever retaining wall
- Dimension Calculation.
- Design of steam.
- Upward pressure calculation.
- Design of Toe slab.
- Design of heel slab.
- Check for overturning and stability.
- Design of shear key as per check.
- Reinforcement detailing.
How do you calculate backfill on a retaining wall?
Multiply the length of the wall by the desired height, then divide this number by 81 to determine the amount of backfill gravel needed. Add the backfill amount to the base amount to determine the total cubic yards of gravel necessary for completing the wall.
What is the minimum thickness of a retaining wall?
The minimum thickness of the stem is considered to be 200mm and base slab to be 300mm for construction purposes. The preliminary thickness of base slab is given by: Tb = 0.08h but not less than 300mm. The stem thickness is gradually decreased towards top to a minimum value of 150 to 200mm for economical design.
How do you calculate reinforcement for a retaining wall?
RCC Quantity estimation Wall length =30 m,height=6 m, width is average of top and bottom. RCC quantity of retaining wall is 30 m x (0.6+0.2)*0.5*6=72 cum. So Total RCC quantity = 45 cum + 72 cum =117 cum.
What is the maximum height for cantilever retaining wall?
Cantilever retaining walls are found best up to a height of 6m. For greater heights earth pressure due to retained fill will be higher due to lever arm effect, higher moments are produced at base, which leads to higher section for stability design as well as structural design. This proves to be an uneconomical design.
What is maximum height limit of cantilever wall?
Cantilever retaining wall has a maximum height not more than 5 m.
How far apart should posts be for retaining wall?
We’ve done the research and have the best answer for you. Retaining wall posts should be at least three feet apart. The distance can be slightly longer or shorter if it works better with your measurements. However, you shouldn’t go more than seven feet apart to make sure your wall is sturdy enough.
How much backfill do I need calculator?
Length in feet x Width in feet x Depth in feet (inches divided by 12). Take the total and divide by 27 (the amount of cubic feet in a yard). The final figure will be the estimated amount of cubic yards required.
How is total height of retaining wall provided?
There should be less reinforcement in the stem towards the top. H = total height of retaining wall. The above equation is derived on the basis of maximum bending moment, and considering the density of earth fill as 1600 kg/m3.
How do you calculate tonnage of reinforcement?
W= (D2/162.28)* L Where ‘D’ and ‘L’ are the diameter and the length of the rebar respectively. Take the value of diameter in terms of millimeter and length in terms of meters. You will get the results in kilograms (Kg). After dividing the results with the actual length of rebar you can get the weight per meter run.
What is the formula used to calculate slope?
Use the slope formula to find the slope of a line given the coordinates of two points on the line. The slope formula is m=(y2-y1)/(x2-x1), or the change in the y values over the change in the x values. The coordinates of the first point represent x1 and y1. The coordinates of the second points are x2, y2.