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Hello All, I need experts on A B Chance helical piles to tell me the differences in applying [highlight #FCE94F]Helical Tension Anchor[/highlight] and [highlight #8AE234]Helical Pulldown Micropile[/highlight] Both are for tension support. I just couldn't tell differences. Thanks. Tony

Thanks, PEinc. Example in 'Trench & Shoring Manual' by state of Califonia department of transportation doesn't count ALL the layers' weight. Page 6-19. It's surprising.

Hi, anybody can tell me? Lateral earth pressure at the [highlight #FCE94F]top[/highlight] of each layer. Thanks.

Hello, Assuing overberdon = 80psf, Rankine theory. 1st layer: ϒ1,Ka1, h1 (layer thickness) 2nd layer: ϒ2,Ka2, h2 3rd layer: ϒ3,Ka3, h3 Lateral earth pressure at [highlight #FCE94F]to of each layer[/highlight] 80 x Ka1 ------------- 1st layer (80 + ϒ1 x h1) x Ka2 -----2nd layer (80 + ϒ1 x h1...

ETABS counted twice of self weight. I defined the mass from [highlight #F57900]self[/highlight] and specified mass and loads. Thanks man. Tony

Hello friends, I encountered a problem with ETABS on calculation of story mass. The mass output doesn't match my hand calculation, 80% more. A testing run in my friend's company gives the same outcome. Has anyone found this problem? How come? Thanks. Tony