The lightning protection class of detonator storeroom was introduced,and the collocation of flash-grounding device and grounding device were analyzed in detail.

3D modeling of lightning arrester protect zone is the parameter 3D drawing software developed on the platform of AutoCAD by using Autolisp.

Analyses the protect zone of lightning arrester by the method to use mathematical statistics, choose the best lightning arrester to protect the building, and quote the example of lightning disaster.

Based on thoroughgoing study on <Design Standard on Building s Lightning Protection>and designing practice of several years,this paper puts forward some suggestions about the differentiation of environment, utilization of building s reinforcing bars as lightning protection devices, and arrangement of lightning receiver, etc.

It is a scheme often applied in the project for buildings with metal roofing to take self sheet metal as lightning receiver.

This design contained some specific methods-definition of grades for lightning protection,air-termination system,down-conductor system and earth-termination system,for example.

Enough air-gap distance,Between air-termination system and protection of buildings against lightning can prevent breakdown of that air-gap distance by lightning surge for point of lightning flash-over and weaken the influence of lightning electromagnetic impulse to insure the safety of buildings and its interior persons and equipments.