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diff --git a/docs/site-candidates.md b/docs/site-candidates.md
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--- a/docs/site-candidates.md
+++ b/docs/site-candidates.md
@@ -217,8 +217,18 @@ and every equipment envelope is an estimate.
   pumps. The model's 6 m warehouse racking and its larger buildings will
   raise the volume; the hydraulic design sets it.
 - **Access**:
-  - one gate on the south side opens onto a truck apron in front of the
-    dock doors;
+  - one main gate on the south side, as in the
+    [phase 1 RFQ](finance/phase1-construction-rfq.md): piers and two 5 m
+    sliding leaves, 10 m clear;
+  - the guard house beside it on the gate's north-west side, 4 × 3 m with
+    a WC and air conditioning, and a boom barrier just inside the gate
+    that car and truck traffic both pass;
+  - an 8 m gate road to a truck apron and dock face in front of the dock
+    doors. The apron is 32 m deep, about twice the 16.5 m of an
+    articulated truck reversing to a dock (estimate), and joins the
+    service road round the east end. That makes ~2,150 m² of heavy-duty
+    paving, against 1,608 m² for apron, dock face and internal road in
+    the Mueang Chi RFQ;
   - an access road runs along the south boundary to the car park, with
     a footpath to the office;
   - a lane behind the factory serves the yard, the silos, the water