High-capacity threaded bar micropile and caisson reinforcement compression spacer

A high-capacity compression spacer, comprising:

• a grout vessel body comprising a solid bottom surface and a sidewall encircling the solid bottom surface, the solid bottom surface substantially planar, the grout vessel body including:
• a grout receiving portion defined by the solid bottom surface of the grout vessel body and a first portion of the sidewall of the grout vessel body, the first portion of the sidewall extending from the solid bottom surface to a second portion of the sidewall;
• a bar receiving portion extending from the grout receiving portion to a lip defining an opening of the grout vessel body, the bar receiving portion defined by the second portion of the sidewall extending from the first portion of the sidewall to the lip;
• and
• a plurality of tie wire insertion holes distributed about the bar receiving portion, each of the plurality of tie wire insertion holes configured for insertion of a tie wire.