disturbed samples.2. ( T ) A falling distance of hammer in the standard penetrationtest is 750 mm.3 ... penetrationtest over the standard penetrationtest.? 시추공을 이용하지 않으므로 SPT에 비하여 간편/신속하며, 연속적으로 시험이 가능12. (5 ... penetration numberfor USA safety hammerfor 150-mm diameter samplerfor 60-m rod (or)? Say? Sayb)? Sayc