#bash 36 Byte

    printf '_|__%.0s' {1..175}|fold -w70

OUtput:

    _|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|
    ___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|__
    _|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|
    ___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|__
    _|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|
    ___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|__
    _|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|
    ___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|__
    _|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|
    ___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|___|__