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本文分为三个部分。第一部分涉及伴随加劲板弯曲而产生的剪力滞后作用。第二部分讨论无加劲肋长板（ａ≥ｂ）受压时的效应．这被称之为有效“宽度”作用。涉及的内容有板的最大强度；此强度如何受初挠度、正压力和边界条件影响；单格板破坏前的应力分布；为确定单格板刚性而设立的“减缩有效宽度”概念，该部分的最后评价中推荐了无约束板强度平均预计值；σｍ／σｏ＝（２／β）－（１／β２）．这为英国海军所采用．且在欧洲已被推荐用于箱形梁桥设计。第三部分讨论了焊接应力的影响，并提出一种精确应变理论来描述受压时焊接板的效应。本文收集了合理的试验数据．还对三艘驱逐舰的实船试验作了重新评定。这里比较着重于数据的统计特性．这样做是为了借助塑性结构可靠性的概率法而建立起结构强度的分布。本文最后列出了重要的有效宽度公式。
This article is divided into three parts. The first part deals with the shear lag effect that accompanies the stiffening of the stiffener. The second part discusses the effect of non-stiffened plates (a≥b) under compression. This is called an effective “width” effect. What is involved is the maximum strength of the slab; how this strength is affected by the initial deflection, the positive pressure and the boundary conditions; the stress distribution before the failure of the slab; the concept of “reduced effective width” established to determine the rigidity of the slab, Σm / σo = (2 / β) - (1 / β2) is recommended in the final evaluation. This is used by the British Navy. It has also been recommended in Europe for box girder design. The third part discusses the influence of welding stress and proposes an accurate strain theory to describe the effect of welding plate under compression. This article collected reasonable test data. The three ships were also re-rated on a real-ship test. Here is more emphasis on the statistical characteristics of the data. This is done in order to establish the distribution of structural strength by means of the probabilistic approach to the reliability of plastic structures. Finally, this article lists the important effective width formula.