ISO 5894 pdf download.Ships and marine technology — Manholes with bolted covers
1 Scope
This International Standard specifies requirements for watertight and oiltight manholes of the current type with bolted covers, for general shipboard use other than for pressure vessels. It specifies the dimensions for the holes in the plating and the number, size and position of the fasteners. All forms of manhole, whether of raised coaming, surface mounted or recessed cover types, shall conform to these principal particulars. The details of the manholes shall be the responsibility of the manufacturer. NOTE Users of this International Standard should note that, while observing the requirements of the standard, they should at the same time ensure compliance with such statutory requirements, rules and regulations as may be applicable to the individual ship concerned.
2 Normative reference
The following normative document contains provisions which, through reference in this text, constitute provisions of this International Standard. For a dated reference, subsequent amendments to, or revisions of, the publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below. For an undated reference, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 262: 1 998, ISO general-purpose metric screw threads — Selected sizes for screws, bolts and nuts.
3 Typical forms, nominal sizes and dimensions
All dimensions are given in milimetres. Manholes shall be classified as type O or E according to nominal sizes (see Figures 1 to 3 and Table 1 ). The dimensions of the manholes and the spacing of the fasteners shall be in accordance with Figures 1 to 7 and Tables 1 and 2. The nominal size L 1 ? b 1 , shall correspond to the length and breadth of the clear opening as given in Figures 1 to 3. The thread of fasteners (nuts and bolts) shall be in accordance with ISO 262. NOTE 1 Figure 1 shows examples of surface mounted and raised coaming forms of manholes. The recessed form of manholes shall be similar. In order to ensure interchangeability of covers and gaskets, the dimensions of these components and the fastener coordinates shall also be as given in this International Standard. NOTE 2 Figure 1 shows welded studs as an example. Other reliable joints between the studs and plate ring are permissible.