Ward R. Malisch Concrete Construction Symposium (Part 2)-The Un-Shored Composite Slab on Metal Deck Part II

The Un-Shored Composite Slab on Metal Deck Part II—Ineffective CD Requirements (PDF)

Pdf Summary

The document is a presentation by Structural Services, Inc. at the WRM Symposium in Anaheim, CA, held on October 17, 2017. It addresses common issues associated with ineffective and incorrect specifications and drawings in construction projects, particularly focusing on concrete flooring and structural steel. <br /><br />The presentation emphasizes the importance of using mandatory language in specifications to ensure compliance. It references the ACI 302.1R-15 Guide for Concrete Floor and Slab Construction as a key document, indicating that guide-level documents typically lack mandatory language to enforce requirements, necessitating clear project specifications.<br /><br />A significant part of the discussion revolves around floor finishing tolerances and concrete thickness, emphasizing the need for accurate calculations to accommodate for deflection in metal decks. The document indicates that issues such as deflection, camber, and tolerance specifications for both suspended slabs and composite decks are crucial to maintaining structural integrity and achieving level floors.<br /><br />The presentation raises unanswered questions about various elements of construction, including the elevation of supporting steel, matching fabricated camber with required levels, deflection concerns, and contingencies when cambered steel does not deflect as expected. It highlights the role of the contractor in addressing these, submitting accurate surveys, and modifying details if column locations exceed allowable tolerances.<br /><br />Moreover, the need for a more refined approach when detailing structural steel, such as maintaining correct alignment and column placement, is underscored. The presentation also touches on the precise location of joints in beams, slabs, and girders, pointing out the importance of placement for achieving level structural surfaces.<br /><br />The document concludes with a hint toward solutions for achieving un-shored, level steel slabs on metal decks, which the presenters promise to address in follow-up sessions.

Keywords

Structural Services Inc.

WRM Symposium

construction specifications

concrete flooring

structural steel

ACI 302.1R-15

floor finishing tolerances

metal deck deflection

camber and deflection

structural integrity