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I.甲型标 1.开挖土方:一般较坚硬的土质所挖的土坑,我们是采取上底3.2M~2,下底2.8M~2。在挖的时候,把一边或一角留下一条约5公寸宽,3:2(纵:横)坡度的取土道(如图1)。取上时两人挖土,两人担土,由取土道出坑。因土坑内活勤范围有限,所以工作时只四人即足,多用了人对工作进度不会提高,反而浪费人力。在土坑将近挖成时,可去掉取土道。此时可用三根树搭架,装上简单滑轮,穿上绳索系着土箕,取土出坑。这样在劳力上不会浪费,而效率也很好。 2.装模板:a.装基础模板—为简便起见,可用四板企口权合起来,周围钉以木椿。使四块木板在地面上形成一正方形木匣。放置时须先将土铲平,使木板舆地面紧贴,同时最好在木椿上端加钉铁钉,卡住木
I. A standard 1. Excavation earth: General harder soil dug pit, we take the bottom 3.2M ~ 2, bottom 2.8M ~ 2. When digging, leave a side or corner of a 5-inch wide, 3: 2 (vertical: horizontal) slope of the road to take the soil (Figure 1). When they took the two digging soil, two soil, from the borrow pit. Due to the limited live-work area in the pit, only four of them are enough to work at the time of their work. When the pit is nearly dug, it can be removed. At this point can be used to build three trees, fitted with a simple pulley, put on the rope tied to the soil Kei, borrow soil from the pit. This will not waste labor, but efficiency is also very good. 2. Install the template: a. Install the basic template - For the sake of simplicity, you can use the four boards together, surrounded by wooden piles. Make four planks form a square box on the ground. Place the soil shovel flat first, so that the wooden floor Yuanyang close to the ground, at the same time the best in the top of wood piles with nails, stuck wood