Title:
Prediction and Measurement of Slab Construction Load of Wall-Type Residential Building
Author(s):
Hyeon-Jong Hwang, Jong-Min Lee, Han-Se Moon, and Hong-Gun Park
Publication:
Symposium Paper
Volume:
364
Issue:
Appears on pages(s):
147-165
Keywords:
construction load; site-measurement; slab; temporary formwork; temporary support; wall-type residential building
DOI:
10.14359/51745462
Date:
12/1/2024
Abstract:
During construction, the load on the slabs can be up to 2 to 3 times their self-weight, which can damage serviceability and structural safety of the slabs with early-age concrete. In the present study, an existing model to predict the load on slabs during construction was modified to account for the use of regular supports and temporary supports in the shoring system, considering construction step where temporary supports are removed. Additionally, the effective supporting area of the shore was introduced to account for the uneven distribution of shores, thereby improving the prediction of construction loads on slabs. To verify the accuracy of the modified model, loads on shores were measured at a wall-type residential building under construction in South Korea. For 2 stories, the loads on shores were measured and the measurement lasted for 45 days. The comparison between predicted and measured slab construction loads showed that the predicted construction load agreed with the measured construction load.
Related References:
1. Paul, G., & Kabaila, A. Construction Loads on Slabs with Shored Formwork in Multistory Buildings. ACI Journal Proceedings, 60(12).
2, Khalid, H. M., & Wai-Fah, C. Determining Shoring Loads for Reinforced Concrete Construction. ACI Structural Journal, 88(3).
3. Park, H. G.; Hwang, H. J.; Hong, G. H.; Kim, Y. N.; and Kim, J. Y. Slab Construction Load Affected by Shore Stiffness and Concrete Cracking. ACI Structural Journal, 108(6).
4. Bischoff, P. H., and Scanlon, A. (2007). “Effective Moment of Inertia for Calculating Deflections of Concrete Members Containing Steel Reinforcement and Fiber Reinforced Polymer Reinforcement.” ACI Structural Journal, 104(1), 68-75.
5. American Concrete Institute (ACI). (2019). Building Code Requirements for Structural Concrete (ACI 318-19) and Commentary (ACI 318R-19). Farmington Hills, MI: American Concrete Institute.
6. Ministry of Land, Infrastructure and Transport. (2021). Korea Design Standards for Concrete Structures (KDS 14 20 01).
7. Ministry of Land, Infrastructure and Transport. (2021). Korea Design Standards for Concrete Structures (KDS 14 20 10).