Which method is used for assembling lattice steel towers when they are large and heavy and the ground is rough?

• A. Piece by piece method: tower is assembled one piece at a time from the ground up
• B. Section Method: sections assembled on the ground then hoisted in to place or stacked successively until the tower is complete
• C. Completely assembled lying on the ground and then lifted as one unit onto its footers or anchors
• D. All of the above

Answer: (A)

When a lattice steel tower is large and heavy and the ground is rough, building it piece by piece from the ground up is the practical approach. Lifting small, manageable pieces keeps the load within the crane’s capacity for each lift and allows you to work with uneven ground by adjusting as you go. You can set and brace each completed section before adding the next, using temporary bracing and guy wires to maintain stability during progression. This method avoids the huge, single lift that would be required if you pre-assembled large sections on the ground or the entire tower lying flat and then raised it, both of which demand smoother, more level ground and far greater lifting capacity than is typically available on rough sites.