PROPOSAL FOR A SIMPLIFIED STRUCTURAL DESIGN METHOD OF WALL FORMWORK TAKING INTO ACCOUNT INTERVALS OF STUDS AND SEPARATORS AND REUSE OF PLYWOOD IN THE CONVENTIONAL FORMWORK

Abstract

 Flexural elastic modulus of plywood and timber for stud in formwork is affected by moisture content, span and reuse of plywood. The influencing factors were studied experimentally and the reduction factor of flexural elastic modulus in the conventional wall formwork was determined. On the basis of this result, a simplified structural design method of conventional wall formwork taking into account intervals of studs and separators and number of reuse of plywood was proposed. Deformations of formwork constituents according to lateral pressure and allowable stresses were illustrated, which can be used for formwork design as well as construction managements.