(laitons)

                            Six pans de décolletage 

                         kg/m  Ecroui                  kg/m Ecroui              kg/m Ecroui           

                            5                 0.18         n                                            20            2.95         n                                            40            11.80       n

                            6                 0.27         n                                            21            3.25         n                                            41            12.40       o

                            7                 0.36         n                                            22            3.90         n                                            42            13.00       o

                            8                 0.47         n                                            23            3.90         n                                            45            14.90       n

                            9                 0.60         n                                            24            4.24         o                                           46            15.60       o

                            10               0.74         n                                            25            4.60         o                                           50            18.40       n

                            11               0.89         n                                            26            4.98         n                                            52            19.90       o

                            12               1.06         n                                            27            5.37         o                                           55            22.30       o

                            13               1.24         n                                            28            5.77         n                                            60            26.50       o

                            14               1.44         n                                            29            6.19         o                                           63            29.50       o

                            15               1.66         n                                            30            6.63         n                                            65            31.10       o

                            17               2.13         n                                            32            7.54         n                                            70            36.10       o

                            18               2.39         n                                            35            9.02         n                                            80            47.10       o

                            19               2.66         n                                            36            9.54         n

                                                                                                              38            10.60       o

                                               Longueurs courantes

                                                                                                              x × 50 : 3 mètres environ.

                                                                                                              x × 1 à 2.50 mètres         .