请教土木工程英语翻译

In any case ,pile tips should not have a diameter less than 150 mm.Timber piles can not withstand hard driving stress;therefore,the pile capacity is generally limited to about 220-270KN.Steel shoes may be used to avoid damage at the pile tip.The tops of timber piles may also be damaged during the driving operation.The crushing of the wooden fibers caused by the impact of the hammer is referred to as brooming.To avoid damage to the pile top,a metal band or a cap may be used.
Spilcing of timber piles should be avoided, particularly when they are expected to carry tensile load or lateral load. However, if splicing is necessary,it can be done by using either pipe sleeves or metal straps and bolts. The length of the pipe sleeve should be at least five times the diameter of the pile. The butting ends should be cut square so that full contact can be maintained. The spliced portions should be carefully trimmed so that they fit tightly to the inside of the pipe sleeve. In the case of metal straps and bolts, the butting ends should also be cut square. Also, the sides of the spliced portion should be trimmed plane for putting the straps on.