Documented cluster · Phra Nakhon
Memorial Bridge bridgehead rows
ตึกแถวเชิงสะพานพระพุทธยอดฟ้า–จักรเพชร
Documented cluster · Phra Nakhon
ตึกแถวเชิงสะพานพระพุทธยอดฟ้า–จักรเพชร
Frontage and depth are the short and long sides of each footprint's minimum-area bounding rectangle, computed by scripts/build-shophouse-spine.py over the Overture/OSM screen. A footprint in this set has not been visited: the shape says shophouse, and nothing here says it is one.
Computed per footprint from depth, plot and neighbours — not merely listed. A clause counts as binding when this building's own geometry triggers it.
MR55 ข้อ 21 of 1
Each คูหา: width ≥ 4 m (column centreline to centreline); depth ≥ 4 m and ≤ 24 m; ground-floor area ≥ 30 m². If depth exceeds 16 m, an uncovered void of ≥ 10% of ground-floor area between 12 and 16 m depth.
The 4 m module is a floor set by law. Tirapas's surveyed 4 m module is the regulation made visible.
The interesting number is the third. Where a row exceeds today's cap, the building standing there could not be built again — which means demolition is not a reversible decision, whatever replaces it.
Each footprint is placed on two axes: the appraised land value underneath it, split at the citywide median of ฿3,568,750, and its plot depth, split at 13.6 m — below which a 2 m setback takes a serious share of any compliant replacement.
Genuinely exposed1
High land value, deeper plot.
The land is worth enough to justify clearing and the plot is deep enough to absorb a setback. On present rules these are the ones that go, and an argument for keeping them has to be made on carbon, tenure or social capital rather than on the code.
Appraised value is the base for transfer tax and sits below market, so every figure here is a floor, not an estimate.
Storeys are known for 0 of the 1 footprints here — 1 carry none, and are left null rather than filled with a plausible number. Across the whole spine the same is true of storeys (for two-thirds of the set), tenure, structural condition, road width, build year.
The bridge is usually read as infrastructure and Pak Khlong Talat as spectacle. The surveyed rows between them are the missing urban tissue: small commercial bays absorbing flowers, ferries, road traffic and the daily transfer between Thonburi and the old capital.
Bridgehead and market-front rows on the Phra Nakhon bank
Documentation: ONEP Rattanakosin conservation building survey ↗. Every computed figure on this page comes from scripts/build-shophouse-spine.py, which states each rule in its header.
Arkara, N. (2026). Memorial Bridge bridgehead rows — documented shophouse cluster (1 screened footprints) [Data set]. Shophouse Metropolis, BKKx. https://shophouses.nonarkara.org/shophouses/cluster/memorial-bridge-rows
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