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What lateral earth pressure coefficient(k) is typically used for good drainage backfill? What can be used for 1" gravel?

The backfill is standard drainage material, but the it's only 60cm higher than we want it..but there is no evidence of problems..but still we want to remove that 60cm load. Remember, we are looking for a cheap alternative design or modification that doesn't modify or touch the retaining wall.

I need ideas on how to modify a backfill design. We already filled soil, and thought the retaining wall shouldn't be subjected such loads..We can't modify the retaining wall..What's the cheapest solution to eliminate the backfill load and maintain the same elevation?

I need ideas on how to modify a backfill design. We already backfilled soil, and thought the retaining wall shouldn't be subjected such loads..We can't modify the retaining wall..What's the cheapest solution to eliminate the backfill load and maintain the same elevation?

Where can I find information on the net about 'Bulletin 19'?

Does anyone know the temperature and relative humidity of soil, with respect to depth and season? Are there any databases on the internet where I can find such stats?

Let's compare the following two wall assemblies listed from exterior to interior: 1. concrete, insulation, and gypsum board and 2.stucco, insulation, and concrete. Therefore, in case one, the insulation is inside, and in case two, the insulation is outside. Case one is good because the...

Let's compare the following two wall assemblies listed from exterior to interior: 1. concrete, insulation, and gypsum board and 2.stucco, insulation, and concrete. Therefore, in case one, the insulation is inside, and in case two, the insulation is outside. Case one is good because the...

I have a few questions related to the same topic. Why do surfaces, such as concrete and stucco, heat-up to temperatures greater than the ambient temperature when the sun shines on them? Also, why does stucco heat-up more than concrete? What role does density have in terms of heat gain and...