Some Ideas on section 03400 - precast concrete panels - City of San Diego You Should Know

Credit: Original article published here. What is a joint? Figure 1: Block 9, Fargo, ND A joint is a deliberate area that normally produces a tolerance for clearance in between surrounding building elements and provides a buffer location where production, erection and interfacing tolerance deviations can be taken in. Product tolerance relate to the dimensions and dimensional relationships of the individual precast elements.

Applied Sciences - Free Full-Text - Nonlinear Dynamic Response of a Precast Concrete Building to Sudden Column Removal - HTML

Interfacing tolerance are associated with other materials or constructing systems in contact with or in close proximity to precast concrete, both previously, during and after precast erection. Joints may also be required to accommodate changes in wall panel or structure dimensions triggered by modifications in temperature, moisture material, or deflection from used style loads.

Everything about Recommendations for Structural Grouting

Figure 1 and 2 reveal some examples of needed joints. Widths of Joints Figure 2: United States Bank Stadium, Minneapolis, MN The designer develops the tolerances needed to make the structure concept work and must temper the desire for close tolerances with the understanding of what can be practically achievable in the plant throughout building and construction, and in the field throughout erection.

Sustainability - Free Full-Text - Development and Application of Precast Concrete Double Wall System to Improve Productivity of Retaining Wall Construction - HTML

Construction Details - Aercon AAC Autoclaved Aerated Concrete

Joint width must not just accommodate variations in the panel measurements and the erection tolerances for the panel, however need to likewise provide a great visual line and sufficient width to permit efficient sealing. The efficiency qualities of the joint sealant should be considered when choosing a joint size.

A Biased View of A RCHITECTURAL PRECAST CONCRETE WALLS

When joints are too narrow, bond or tensile failure of the joint sealant may occur and/or nearby precast units might can be found in contact and be subjected to unexpected loading, distortion, cracking, and local crushing (spalling). Joint widths must not be chosen for reasons of look alone, but need to relate to panel size, building tolerances, joint sealant products, and nearby surfaces.

Tolerances in overall building width and length are consumed in the panel joints. Take Reference of a structure, out to out, being 2" too little over 300'. The joints widths are somewhat reduced over the majority of the wall during erection to correctly locate corners at a slightly reduced grid out to out.