Are SANS 10400XA and SANS 613 linked?

Yes,  they are linked.

 I have had MANY calls on the need FOR SANS 613 CERTIFICATION BELOW 15%  

 

REGULATION XA3 INVOKES SANS 10400 XA WHICH STATES:

4.4.4 FENESTRATION

  4.4.4.3 All fenestration air infiltration shall be in accordance with SANS 613.

 

IN SUMMARY

A)   SANS 613 CERTIFICATION IS REQUIRED FOR FENESTRATION FROM 0-15 % OF NET FLOOR AREA PER STOREY AND FROM GREATER THAN 15% 

 

B)    SANS 204 4.3.4. COMES INTO EFFECT AFTER THE 15% FENESTRATION AREA HAS BEEN EXCEEDED, THEN COMPLIANCE WITH CONSTANTS FOR U VALUES AND SHGC VALUES IS REQUIRED IN ADDITION TO SANS 613