点数 保证率 下限 5 6.2 上限 6 6.1 内插点 5.66 6.134 31 0.4424 51 0.3368 32 0.4358 52 0.3336 33 0.4292 53 0.3304 34 0.4226 54 0.3272 35 0.416 55 0.324 36 0.4094 56 0.3208 37 0.4028 57 0.3176 38 0.3962 58 0.3144 39 0.3896 59 0.3112 40 0.383 60 0.308 41 0.3787 61 0.3057 42 0.3744 62 0.3034 43 0.3701 63 0.3011 44 0.3658 64 0.2988 45 0.3615 65 0.2965 46 0.3572 66 0.2942 47 0.3529 67 0.2919 48 0.3486 68 0.2896 49 0
DRAIN OUTLET CONNECTIONS Floor drains, are available in a variety of outlet connection types. The drain ’ s outlet connection must be compatible with those of the drainage piping system to which it is connected. The most commonly employed connection types are as follows: 1. NO-HUB (NH) (A/K/A Mechanical Joint) The most widely used connection. A No-Hub connection is achieved by butting No Hub