GOVERNMENT ENGINEERING COLLEGE,VALSAD CIVIL ENGINEERING DEPARTMENT SHORING PREPARED BY – Shah Moxesh – Shah Sidharth – Patel Shubham GUIDED BY : PROF.D.J.PATEL PROF.S.H.MISTRY

What is Shoring? Shoring (or Falsework), is a temporary structure used to support vertical loads during the process of construction. The loads supported can be from freshly placed concrete, existing structures, or from construction equipment.

Engineering Requirements for Shoring Design

Question? How does one go from To This ThisEngineering

Requirements for Cast-In-Place Concrete OSHA Construction Standard Subpart Q (a)General requirements for formwork (1) Formwork shall be designed, fabricated, erected, supported, braced and maintained so that it will be capable of supporting braced and maintained so that it will be capable of supporting without failure all vertical and lateral loads that may be without failure all vertical and lateral loads that may be reasonably be anticipated to be applied to the formwork. reasonably be anticipated to be applied to the formwork. Formwork which is designed, fabricated, erected, supported, Formwork which is designed, fabricated, erected, supported, braced and maintained in conformance with the Appendix to this braced and maintained in conformance with the Appendix to this this section will be deemed to meet the requirements of this this section will be deemed to meet the requirements of this paragraph. paragraph. (2) Drawings or plans, including all revisions, for the jack layout, formwork (including shoring equipment), working decks, and formwork (including shoring equipment), working decks, and scaffolds, shall be available at the jobsite scaffolds, shall be available at the jobsite

Engineering’s Role Engineering plays a critical role in the overall success on most projects where shoring is being used. Shoring Engineers and Designers can provide contractors with the knowledge and experience that allows them to be competitive and have a safe working environment. Shoring Engineers and Designers are highly specialized in the skills required to form and shore complex shapes formed from cast- in-place concrete, supporting high concentrated loads and keeping your workforce safe. These design professionals can also provide you with many alternative ways to solve these complex situations, which are now common on today’s projects. Engineering plays a critical role in the overall success on most projects where shoring is being used. Shoring Engineers and Designers can provide contractors with the knowledge and experience that allows them to be competitive and have a safe working environment. Shoring Engineers and Designers are highly specialized in the skills required to form and shore complex shapes formed from cast- in-place concrete, supporting high concentrated loads and keeping your workforce safe. These design professionals can also provide you with many alternative ways to solve these complex situations, which are now common on today’s projects.

How Engineering Supports You!! Layout and field assembly drawingsLayout and field assembly drawings CalculationsCalculations Product usage, capacities and capabilitiesProduct usage, capacities and capabilities Proper product applicationsProper product applications Design of standard and special product componentsDesign of standard and special product components Field inspections and job walksField inspections and job walks SafetySafety

Standards Used In The Design And Erection Of Shoring Systems American Concrete Institute – Committee 347American Concrete Institute – Committee 347 Scaffolding, Shoring & Forming InstituteScaffolding, Shoring & Forming Institute Occupational Safety and Health AdministrationOccupational Safety and Health Administration Local and State Building CodesLocal and State Building Codes AASHTOAASHTO Local State Department of TransportationLocal State Department of Transportation Military SpecificationsMilitary Specifications Department of Energy SpecificationsDepartment of Energy Specifications

Standards Used In The Design And Erection Of Shoring Systems In House Engineering Department Specifications and Design Guides

Without the proper communication, even the smallest project can potentially turn into: Without the proper communication, even the smallest project can potentially turn into: “I wish I never Quoted This Project”

Various Shoring Systems Post Shores Frame Shoring Table Systems Truss & Column Mounted Post/Ledger System Drop Head/Post Systems Adjustable Beam Systems

Post Shores One of the most common shoring systems/methods of shoringOne of the most common shoring systems/methods of shoring Simplest to use, little training requiredSimplest to use, little training required LightweightLightweight Post have various ranges in shoring heightPost have various ranges in shoring height Load capacity will vary with heightLoad capacity will vary with height Can be used in tight and unusual shapesCan be used in tight and unusual shapes

Single Post Shore Safety Rule As Recommended by the Scaffolding, Shoring and Forming Institute, Inc. Item CPlumb All Post Shores As The Erection Proceeds. Check plumb of post shores JUST PRIOR TO POUR Item C. Plumb All Post Shores As The Erection Proceeds. Check plumb of post shores JUST PRIOR TO POUR Item G. For Stability, Single Post Shores Shall Have Adequate Bracing provided in the longitudinal, transverse and diagonal directions. Bracing shall be installed as the shores are being erected.

Post Shores Not Plumb No Adequate Bracing

Proper Usage of Single Post Shores

Shoring Frames One of the most common shoring systems/methods of shoring.One of the most common shoring systems/methods of shoring. Simple to use, little training required.Simple to use, little training required. Most field personnel are knowledgeable in assembly and safe usage of systemsMost field personnel are knowledgeable in assembly and safe usage of systems Load capacities range from 10,000 lbs per leg to 50,000 lbs per legLoad capacities range from 10,000 lbs per leg to 50,000 lbs per leg Systems are variable in frame heights and brace sizesSystems are variable in frame heights and brace sizes Multitude of accessories to meet your requirementsMultitude of accessories to meet your requirements Have an integral screw leg to allow fine adjustmentHave an integral screw leg to allow fine adjustment Most Shoring suppliers have a substantial inventory on handMost Shoring suppliers have a substantial inventory on hand

Shoring Frames

Notice how “stringer” runs diagonally from one leg to the other “Stringer” is CENTERED on middle leg

Post/Ledger Systems One of the newer shoring systems to be introduced to the US construction marketOne of the newer shoring systems to be introduced to the US construction market Most of these systems have been developed by European Shoring suppliers (Metric)Most of these systems have been developed by European Shoring suppliers (Metric) These systems require a more “technical” erection crewThese systems require a more “technical” erection crew These systems are lightweight, most of the components are made from aluminum.These systems are lightweight, most of the components are made from aluminum. High leg capacities. In certain configurations a single leg can carry 24,000 lbsHigh leg capacities. In certain configurations a single leg can carry 24,000 lbs Can be broken down into single posts for re-shore operationsCan be broken down into single posts for re-shore operations Systems can be assembled into tables or tall towers and flown into the required location on a projectSystems can be assembled into tables or tall towers and flown into the required location on a project Fast erection/assembly timesFast erection/assembly times Uses less parts than standard frame systemsUses less parts than standard frame systems System is best used for heavy slabs such as Turbine Pedestal Tops, Linear Accelerator or any other type of heavy reinforced concrete structuresSystem is best used for heavy slabs such as Turbine Pedestal Tops, Linear Accelerator or any other type of heavy reinforced concrete structures

Post/Ledger Systems

Adjustable Beam System One of the older systems on the marketOne of the older systems on the market Simple to useSimple to use Units come in various span combinations. Span sizes vary from 4’ up to 30’Units come in various span combinations. Span sizes vary from 4’ up to 30’ Great for tight locations or areas where obstructions limited the use of standard shoring towers.Great for tight locations or areas where obstructions limited the use of standard shoring towers. Can be used in tight and unusual shapesCan be used in tight and unusual shapes Available in both steel and aluminumAvailable in both steel and aluminum

Adjustable Beam Systems

Table Systems These systems are best used on high rise type structures where there is a substantial amount of reuseThese systems are best used on high rise type structures where there is a substantial amount of reuse Table units are designed for your projects requirementsTable units are designed for your projects requirements These systems components are either constructed from aluminum or steelThese systems components are either constructed from aluminum or steel These systems use modular parts that simply bolt togetherThese systems use modular parts that simply bolt together Little re-shoring of slabs is required due to limiting leg locationsLittle re-shoring of slabs is required due to limiting leg locations As for Column Mounted Tables, no re-shoring will be required, due to tables being supported by jacks at the structures column or shearwallsAs for Column Mounted Tables, no re-shoring will be required, due to tables being supported by jacks at the structures column or shearwalls These systems all require the use of tower or track type cranes to moveThese systems all require the use of tower or track type cranes to move Contractors must keep crane location and capacities in mind when deciding on using one these types of systemsContractors must keep crane location and capacities in mind when deciding on using one these types of systems Assembly area is typically required since these systems are job built. In some cases shoring suppliers may assemble tables for the contractorAssembly area is typically required since these systems are job built. In some cases shoring suppliers may assemble tables for the contractor

Table Systems

“Bad Practice” Care must be taken during ALL stages of assembly on any type of Shoring Systems. If care is NOT taken, there is a potential for failure of that system.

Since this jack is not plumb, damage or failure of the jack may occur This jack has been installed properly

Post Shores Shown Correctly Loads on structure are indicated on for Engineer of Record to review

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