在线等，请高手帮忙翻段话，是关于残疾人设施要求的

8. Accessibility Requirements
残障人士使用要求

a. Are objects allowed to protrude from walls? If so, are there limitations for the sight impaired? Are cane detection areas required?
允许墙壁有物体突出吗？如果允许，对视力残障人士有限制吗？要求设置盲人手杖击打区吗？

b. Are there any required door opening clearances? Around doors with closers?
有没有要求开门的净空？在门周围有围栏吗？

c. Are there any wheel chair clearance requirements for circulation throughout the project?
该项目全程是否有轮椅净空要求？

d. Are counters required to be installed at a special accessible height?
柜台是否要求按特定的可进入高度安装？

e. Are there any wheel chair reaching requirements for front or side approach?
有没有从正面或侧面允许轮椅进入的要求？

f. Are there required clear or level areas around accessible doors?
可进入的门周围要求有净空或水平区域吗？

g. Is signage required to be in brail?
标志牌要求使用盲文吗？

这里的clear, clearance就是留出的空间，我用了“净空”，或许可以有更适当的中文表达

大意应该是准确的，应该可以帮助理解了

补充：
国内目前在这方面仍然缺少考虑，尤其