King post/soldier piles and lagging walls are a cost effective system of temporary or permanent retaining wall using beams and pre-cast concrete panels.
A king post (or king-post or kingpost) is a central vertical post used in architectural or bridge designs, working in tension to support a beam below from a truss apex above (whereas a crown post, though visually similar, supports items above from the beam below).
The king pile used to construct a combi wall system must be stable, rigid and straight to create a strong frame. Similarly, when installed, it's important that the pipes are embedded vertically, which will guarantee that they are parallel to each other and allow the wall to retain its integrity.
King Post Walls, also known as Soldier Piles, are some of the oldest forms of retaining systems used in deep excavations. They have successfully been used since the late 18th Century in metropolitan cities like New York, Berlin, and London.
Regardless of the type, every king pile combi wall is built using large king pile beams and sheet pile. The king pile beams provides the bulk of the wall's structure, while the sheet pile is used to fill in the gaps between the beams, filling in the wall and making it continuous.
King post/soldier piles and lagging walls are a cost effective system of temporary or permanent retaining wall using beams and pre-cast concrete panels.
(iii) King Post Truss - Span length is in the range of 5 to 8 meters. (iv) Queen Post Truss - Span length is in between 8 to 12 meters. (v) Pratt Truss - Span length is in between 6 to 10 meters. (vi) Howe Truss - Span length is in between 6 to 30 meters.
Piles are stronger, better quality posts, with no faults in them which can accept the weight and potential movement of a house (but also bridges/wharves, etc.).
Soldier piles are often used for temporary construction and are not always the best option for long-term applications. Improper backfilling can result in ground loss that cause surface settlements. Finally, soldier piles are not ideal in areas with a high-water table.
Cantilever soldier pile walls are commonly used when excavation depths are limited to 5m or less (15ft). In most cases, cantilever depths are kept to under 3.5m (10ft) because controlling wall displacements requires an increasingly stiffer steel section.
Piles in the Roman world were exclusively wood piles; this was to remain the case for all piling until the end of the nineteenth century. These wood piles were driven by drop hammers on small wooden rigs.
A contiguous bored pile wall is a retaining wall consisting of concrete bored piles installed in a linear configuration with a minimum spacing of 150mm between consecutive piles installed as a retaining structure.
King post trusses are advantageous because they are cost-effective, straightforward to construct, and versatile for different building types. However, their main disadvantage is that they are suitable for shorter spans compared to other truss types due to the limit in structural efficiency over larger distances.
The king post and diagonal beams are all under tension, while the horizontal beam is under compression. King post trusses are simple to construct and require less material than other types of trusses, making them a cost-effective option for roofing.
Purlin is a horizontal beam or bar used for structural support in structures, most often below the roof. Purlins are supported either by the building's rafters or its walls. These are most commonly used in metal buildings, but in wood-frame structures, these also replace closely packed rafters.
In some cases, Piles can be extremely painful as it further causes oozing of blood and itchiness in anal area. Things can become very difficult for people to carry on with their regular routine life while struggling with piles.
Slab Foundations: Pros, Cons, and More. Slab foundations are the most affordable to install but don't offer any space for storage or utilities. Pier and beam foundations provide space under your home for easier access and better protection from water and flooding.
King posts are isolated steel columns or beams that are installed along the line of the proposed retaining wall typically at centres between 1 and 3m. The space between the posts is filled, over the retained height, using a variety of different solutions but most commonly a precast concrete panel.
Where a King post uses one central supporting post, the Queen post truss uses two. A Queen post truss carries all the load from its rafters and passes it to the vertical posts.
A king post truss, or turkey track truss, is built with two principal rafters, a tie beam, a central vertical post, and two struts. The central vertical post is what gives the king post truss its triangle shape. For added support, one strut is placed at a 45° angle on each side.
You should expect to pay between $200 and $400 per linear foot for piling, including installation and any necessary reinforcement. For instance, a 40-foot dock with four pilings measuring 12 inches in diameter and high-strength concrete could cost between $10,000 to $16,000.
Auger Displacement Piles (ADP) use a hollow-stemmed auger to displace soil laterally, minimising the need for spoil removal and reducing vibrations. This method is particularly useful in sensitive areas where traditional piling could disrupt surrounding structures.
The pile driving hammer produces vibrations and noise with each blow delivered to the pile. The vibrations of consequence are caused by waves of ener- gy traveling away from the pile. Each blow to the pile transfers energy from the pile to the surrounding soil.