Brackets are essential in many tasks to rescue trapped people. Its most common use is to fix objects. The wood chosen for the bracket must be solid and straight, with no obvious defects such as thrift or cracking. The surface of the bracket must be unpainted or polished as this will make the wood slippery, especially when wet. Beams and other beams found in the rubble can be machined into brackets.
2 X 2 (5 cm X 5 cm) or 4 X 4 (10 cm X 10 cm) pieces of wood and wedge-shaped sleepers of the same size are very useful.
The bracket consists of a number of staggered wooden strips. It disperses the load and transfers the load to the surface. It also has lateral stability, depending on the width and height ratio. The height should not exceed 3 times the width (Note: Each stick should be no shorter than 2 feet [60 cm]).

【Main illustration: Well frame 4X4 (10cmX10cm), 6X6 (15cmX15cm) flat. 】
To 500PSI (pounds / flat? 谟 撸┪ 撸┪ 撸┪ 撸┪ 撸┪ 薅鹊 薅鹊 薅鹊 薅鹊 薅鹊 薅鹊 薅鹊 薅鹊 薅鹊 薅鹊 薅鹊 薅鹊 薅鹊 薅鹊 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 4X4 sleeper load capacity = 24,000 lbs (10,886 kg). 6X6 Sleeper Load Capacity = 60,000 lbs (27,215.5 kg). Note: The use of 3 in each layer in a 3X3 (7.5cmX7.5cm) sleeper bracket doubles the bearing capacity.}