Soldier Pile Wall with Tiebacks

Retaining wall near railroad tracks uses steel beams (called soldier piles). Pressure treated timber lagging installed between soldier piles. Steel tieback tendons stabilize retaining wall.

Category:

Howto & Style

Tags:

• soldier
• pile
• wall
• steel
• beams
• pressure
• treated
• wood
• lagging
• wale
• tiebacks

[woodworx69]

ps. how do you know how far to drill and how do you know what the soil conditions are???

[RetainingWallExpert]

An engineer can calculate that, and it is quite involved. The part nearest the wall does not "count" as anchor, because ity is moving with the wall. Stronger soil will require a smaller diameter around the anchor and a shorter length, once past the "unbonded zone" close to the wall. Best results are when anchored portion is in bedrock. Design will show number and spacing of anchors, location, angle, length, strand diameter, and wale (horizontal beam) size. So, there's no a simple answer, sorry!

[woodworx69]

so how do you get the tie backs in? Excavation?

[RetainingWallExpert]

The tiebacks are installed by drilling a small diameter hole (4-6 inches) back into the hillside. A special drilling machine drills this hole sideways, downward at an angle of 15 to 45 degrees using a screw auger that is hollow in the center. Next, a piece of steel rod is inserted down the center of the hollow screw and grout/concrete is pumped into the hole. The grout prevents the hole from collapsing and hardens into concrete around the steel rod. Pretty cool, huh?

[richard1137]

I am a civil engineer (so I know about these things (or should)) but you are presenting a simple engineering concept to the masses in easily understood language. well done

[makjoe6]

Can any body tell me what is function of wailing beam (beam which tie togather all the anchors) and web site on which i can get detail of it

[jony54ful]

Hello! ever tried - H Be Gone (erm, check it on google should be there)? Ive heard amazing things about it and my mate finally eradicated heavy piles with it.

[colincolenso]

Seems you were saying you put the sleepers in top to bottom, as you dig out behind the wall line. Is that right? If so, you'd have to cut the sleepers short enough that they could potentially fall out. Are they screwed to the C post soldiers? btw. Great videos, I run a retaining wall company in Australia.

[ya900]

i am an architect student and i am learning these from you! thank you! teach us more!

[912adel]

thank you for this video I under stood from it more than what our professore had explained in the construction process coures

[RetainingWallExpert]

yes - the wale is the horizontal beam between two of the vertical beams. The wale minimizes the number of tiebacks that are required. Every single one of the vertical beams must be secured with the tiebacks into the hill, and each one would need a tieback. But, by placing a tieback connected to a wale, the wale can then secure TWO vertical beams.

[woodworx69]

very cool!....I am a contractor and love all things construction!....