A common real-world application involves . When constructing a multi-story building, the newly poured concrete floors above cannot support their own weight, construction equipment, or partially completed floors above them. This is where ACI 347's guidance on shoring (temporary supports directly under a fresh slab) and reshoring (supports placed on lower, cured slabs to transfer loads) becomes critical. The guide, along with its companion document "Guide for Shoring/Reshoring of Concrete Multistory Buildings" (ACI 347.2R), helps engineers design these support systems to prevent overloading and potential collapse.
Historically, a significant portion of structural collapses in concrete buildings occur during the construction phase, not after completion. Proper shoring design prevents these catastrophes.
Often hosts community-uploaded previews or full versions, such as this 347R-14 Guide To Formwork Note on "34714": aci 34714 pdf
| Document Number | Title | Year | Key Focus | | :--- | :--- | :--- | :--- | | | Guide to Formed Concrete Surfaces | 2013 | Classifies formed concrete surfaces into four Concrete Surface Categories (CSC) based on quality requirements for visual appearance. | | ACI 347.2R-17 | Guide for Shoring/Reshoring of Concrete Multi-story Buildings | 2017 | Provides design criteria and methods for developing safe shoring/reshoring schedules in multi-story construction. | | ACI SP-4(14) | Formwork for Concrete (8th Edition) | 2014 | A comprehensive manual that follows the guidelines of ACI 347R-14, which is reprinted in full in the appendix. |
: Covers design criteria, materials, and safety factors for vertical and horizontal formwork systems. 2. Design Loads and Pressure Vertical Loads A common real-world application involves
While "347-14" refers to the 2014 edition of the formwork guide, "34714" also appears in pharmaceutical contexts as , a code for the drug Brivaracetam , used in treating epilepsy. ResearchGate or information regarding the medication Guide to Formwork for Concrete
ACI 347.1R-14 outlines methods for calculating these loads. While simplified methods assume rigid shoring and infinitely stiff slabs, the guide encourages a refined analysis using structural software. This ensures that the structural capacity of an early-age concrete slab is never exceeded by the construction demands placed upon it. 4. Key Engineering Guidelines in the Document The guide, along with its companion document "Guide
, not a code. If an architect or engineer wants these provisions to be part of a legal contract, they must restate them in mandatory "shall" language within the project specifications. Relationship to Other Codes: While ACI 347 focuses on formwork,
The ACI 347.14 PDF report covers a wide range of topics related to precast concrete construction. Some of the key topics include:
By following the guidelines in the , contractors can optimize the design of their formwork systems, reducing materials and labor costs without compromising safety. 3. Surface Quality and Tolerances
ACI 347-14 provides recommendations for the design, construction, and materials used in formwork for concrete. Formwork is often the most cost-intensive and labor-intensive component of concrete construction, sometimes accounting for up to 60% of the total cost of a concrete structure.