Trestle base and trestle

A trestle base for fixing an installation object to be installed on a roof surface of a building, the trestle base comprising:

• a base main body to which a support member supporting the installation object is attached, and that is fixed to the roof surface;
• a first mounting bracket that is attached to one end of the base main body;
• and
• a second mounting bracket that is attached to another end of the base main body, wherein
• the first mounting bracket and the second mounting bracket each include, on both ends, a fixer that is fixed to the roof surface,
• the base main body includes a bottom plate that is fixed to the roof surface,
• the first mounting bracket includes a hold down member that holds down the bottom plate,
• the second mounting bracket includes a hold down member that holds down the bottom plate,
• a gap is provided between the bottom plate, and the hold down member of the first mounting bracket and the hold down member of the second mounting bracket, the gap being configured to drain rainwater that has accumulated on an upper surface of the bottom plate of the base main body,
• the base main body includes a pair of side walls erected on the bottom plate,
• the base main body further includes a wall erected on one end of the bottom plate, and
• the first mounting bracket is provided between the pair of side walls and the wall, and disposed on the upper surface of the bottom plate.